FIZATUL AINI PATAKOR | Politeknik Merlimau Melaka (original) (raw)
Papers by FIZATUL AINI PATAKOR
Autism is a lifelong developmental disability that affects how people perceive the world and inte... more Autism is a lifelong developmental disability that affects how people perceive the world and interact with others. Most of these children have difficulty with fine motor skills which typically struggle with handwriting and fine activities in their routine life such as getting dressed and controlled use of the everyday tool. Because fine motor activities encompass so many routine functions, a fine motor delay can have a measurable negative impact on a person's ability to handle daily practical tasks. This project proposed a simple fine motor exercise aid plus the game (exergame) for autistic children who discover from fine motor difficulties. The proposed exergame will be blinking randomly and user needs to bend their finger accordingly. It will notify the user, whether they bend the right finger or not. The system is realized using Arduino, which is programmed to control all the operated circuit. The feasibility studies with six autistic children were conducted and found the chi...
Technical laboratories are typically considered as highly hazardous places in the polytechnic ins... more Technical laboratories are typically considered as highly hazardous places in the polytechnic institution when addressing the problems of high incidences and fatality rates. In conjunction with several topics covered in the technical curricular, safety and health precaution should be highlighted in order to connect to few key ideas of being safe. Therefore the assessment of safety awareness in terms of safety and health about hazardous and risks at laboratories is needed and has to be incorporated with technical education and other training programmes. The purpose of this study was to determine the efficacy of technical laboratory safety in one of the polytechnics in northern region. The study examined three related issues that were; the availability of safety material and equipment, safety practice adopted by technical teachers and administrator-s safety attitudes in enforcing safety to the students. A model of efficacy technical laboratory was developed to test the linear relation...
Autism is a lifelong developmental disability that affects how people perceive the world and inte... more Autism is a lifelong developmental disability that affects how people perceive the world and interact with others. Most of these children have difficulty with fine motor skills which typically struggle with handwriting and fine activities in their routine life such as getting dressed and controlled use of the everyday tool. Because fine motor activities encompass so many routine functions, a fine motor delay can have a measurable negative impact on a person's ability to handle daily practical tasks. This project proposed a simple fine motor exercise aid plus the game (exergame) for autistic children who discover from fine motor difficulties. The proposed exergame will be blinking randomly and user needs to bend their finger accordingly. It will notify the user, whether they bend the right finger or not. The system is realized using Arduino, which is programmed to control all the operated circuit. The feasibility studies with six autistic children were conducted and found the chi...
Indonesian Journal of Electrical Engineering and Computer Science, 2022
This paper aims to develop the sliding mode control (SMC) scheme in sensorless permanent magnet s... more This paper aims to develop the sliding mode control (SMC) scheme in sensorless permanent magnet synchronous machine (PMSM) drives to replace conventional proportional integral (PI) speed control. The SMC is formulated based on the integral sliding surface of the speed error. And the error is corrected based on the concept of Lyapunov stability. The SMC is designed with the load torque observer so that the disturbance can be estimated as feedback to the controller. The vector control technique which is also known as field-oriented control (FOC) is also used to split the stator current into the magnetic field generating part which is the direct axis and the torque generating part which is the quadrature axis. This can be done by using Park and Clarke transformations. The performance of the proposed SMC is tested under changes in load-torque and without load for different speed commands. The results prove that the SMC produces robust performances under variations of speeds and load dis...
International Journal of Power Electronics and Drive Systems (IJPEDS), 2017
This paper presents the comparative performances of Indirect Field Oriented Control (IFOC) for th... more This paper presents the comparative performances of Indirect Field Oriented Control (IFOC) for the three-phase induction motor. Recently, the interest of widely used the induction motor at industries because of reliability, ruggedness and almost free in maintenance. Thus, the IFOC scheme is employed to control the speed of induction motor. Therefore, P and PI controllers based on IFOC approach are analyzed at differences speed commands with no load condition. On the other hand, the PI controller is tuned based on Ziegler-Nichols method by using PSIM software which is user-friendly for simulations, design and analysis of motor drive, control loop and the power converter in power electronics studies. Subsequently, the simulated of P controller results are compared with the simulated of PI controller results at difference speed commands with no load condition. Finally, the simulated results of speed controllers are compared with the experimental results in order to explore the performa...
Power system protection is a branch of electrical power engineering that deals with the protectio... more Power system protection is a branch of electrical power engineering that deals with the protection of electrical power systems from faults through the isolation of faulted parts from the rest of the electrical network. Power System Protection is taught in polytechnic as a final semester subject for diploma student in electrical engineering, which consists of theoretical and practical work. As part of the syllabus, the course learning outcome on practical work is to produce students that can handle any practical work related to common protection system applied to power distribution system equipment. Most practical work related to Power System Protection subject is done using simulation environment, where the actual performance of protection equipment cannot be measured. This paper presents the configuration of Power System Protection laboratory that involves six experimental set of practical work for diploma student of Electrical Engineering Department in Politeknik Merlimau. Emphasi...
2016 8th Computer Science and Electronic Engineering (CEEC), 2016
Recently, fuzzy logic controllers have been recognized in induction motor drives systems for thei... more Recently, fuzzy logic controllers have been recognized in induction motor drives systems for their robust performance. Therefore, this paper presents a fuzzy logic (FL) control system based on FL approach for a vector controlled induction motor drives for high performance application. The analysis, design and simulation of the FL controller for vector control induction motor are carried out based on scaling factor and membership functions theory. First, the drives system was simulated with Standard Constant Parameter FL, Design Case Constant Parameter Fuzzy Logic and PI controller. Then the best performances of these controllers were compared to proposed optimized fuzzy logic controller (OFL). The OFL is done by tuning of scaling factor for the change in speed error, Gce to produce a better transient behaviour, and altering the width and moving the peak value positions of membership functions to improve control performance. The results show that the proposed OFL gives better performances in tracking performances and also load disturbances. The test is done in different operating conditions for half rated speed and full rated speed, half and full load condition. The results demonstrates the robustness and the effectiveness of OFL controller for high performance of induction motor drive system.
2016 8th Computer Science and Electronic Engineering (CEEC), 2016
Sliding mode control offers great potential to deal with uncertainties such as parameter variatio... more Sliding mode control offers great potential to deal with uncertainties such as parameter variation and external load disturbances in controlling induction motor drives. The main obstacle of conventional sliding mode control is the presence of chattering phenomenon. It is known that the large switching gain of sliding mode control is proportional to the chattering level, and normally a large switching gain is applied to handle the uncertainties. In this paper, this chattering phenomenon is significantly reduced by a newly developed algorithm. The control algorithm incorporates the adjustment of switching gain value and variation of the boundary layer to replace the discontinuous function in conventional sliding mode control. As a result, the boundary layer and the switching gain will change in the presence of uncertainties and load disturbances. The experimental results show the effectiveness of the proposed sliding mode control is superior in reducing the chattering phenomenon and handling the external load disturbances.
Chattering is undesirable phenomenon when dealing with sliding mode control. This paper proposed ... more Chattering is undesirable phenomenon when dealing with sliding mode control. This paper proposed a new method for addressing chattering with a simple and easy implementation in Digital Signal Processor (DSP). This is realized by replacing the discontinuous function in conventional sliding mode control with statedependent auto-tuning of boundary layer in fast sigmoid function and state-dependent switching gain, for threephase induction motor speed control. This method allows chattering reduction in control input, while keeping the robustness characteristics of sliding mode control. The performance of the proposed control is verified in emulation induction motor drives using Digital Signal Processor TMS320F2812 board, with different speed command and load disturbances.
The stability control of two separate electric vehicle (EV) motors by using only single five-leg ... more The stability control of two separate electric vehicle (EV) motors by using only single five-leg inverter (FLI) is the motivation of this study. This paper proposes an electric differential (ED) in a FLI to serve dual separate induction motor (IM) drive-based wheels of an EV traction drive system. FLI is developed to replace the two normal three-phase voltage source inverters that need to independently control the two separate IMs at each of the EV wheels. Stability problem will be tackled by electric differential (ED) algorithm. The proposed traction drive employs space vector pulse width modulation direct torque control (SVPWM DTC) modulator with duty cycle merging algorithm as the switching sequence of the FLI. This technique allowed any portion of DC bus voltage to be allocated to any motor. Simulations were performed. The resulting control performance; speed, torque, and current verified the stability and robustness of the system. This study implies that there is possibility of using only one inverter (FLI) in order to drive two separate IM drive-based wheels without jeopardizes the system stability and robustness.
This paper presents the simulation of three-phase induction motor drives using Indirect Field Ori... more This paper presents the simulation of three-phase induction motor drives using Indirect Field Oriented Control (IFOC) in PSIM environment. The asynchronous machine is well known about natural limitations fact of highly nonlinearity and complexity of motor model. In order to resolve these problems, the IFOC is applied to control the instantaneous electrical quantities such as torque and flux component. As FOC is controlling the stator current that represented by a vector, the torque component is aligned with d coordinate while the flux component is aligned with q coordinate. There are five levels of the incremental system are gradually built up to verify and testing the software module in the system. Indeed, all of system build levels are verified and successfully tested in PSIM environment. Moreover, the corresponding system of five build levels are simulated in PSIM environment which is user-friendly for simulation studies in order to explore the performance of speed responses based on IFOC algorithm for three-phase induction motor drives.
The exact parameter of the motor is essential especially to control in high performance applicati... more The exact parameter of the motor is essential especially to control in high performance application. Any mismatch of the motor parameters can be affected the performance of the motor. The parameter such as rotor resistance, stator resistance, mutual inductance, stator inductance, rotor inductance, moment of inertia and friction coefficient is needed to comprehend in term of using Field Oriented Control Technique to regulate this induction motor in high performance application. This paper present a step by step parameter determination of three phase squirrel cage induction motor using experimental design namely no-load test and locked rotor test. Then the simulation models were developed to verify the experimental result. The parameter obtained will assist to realize the induction motor control using Field Oriented Control technique.
The practical implementation of advanced controlled system for an industrial application involves... more The practical implementation of advanced controlled system for an industrial application involves a wide variety of integrated field such as control electronics, power electronics, electric machine and drives. The ball and beam educational tool presented here allows student to work with all different fields. The system includes a ball, a beam, a motor, several sensors, intelligent drive and PC as a host. This educational tool involves the modelling process, analysis and control of the ball and beam system using Matlab/Simulink and experimental hardware. The control is designed in closed-loop system using PID tuning method. This research presents the very useful and influential laboratory system that provides PC-based control software that enable student to compare the simulation and experiment. Thus, it is easier for students to relate the theoretical concepts that they have learned in class.
With regard in increasing awareness of Occupational Safety and Health issue in Malaysia, lecturer... more With regard in increasing awareness of Occupational Safety and Health issue in Malaysia, lecturer in technical institution are not exempted to give consciousness towards their students. Lecturers are bear with climate of accountability and liability for the safe conduct of laboratory process. With careful practice, most of the dangers in technical laboratory can be avoided. Therefore, this paper is attempted to focus technical laboratory safety related
to lecturers’ safety practice.
The study giving emphasis on supervision, present proper safety and laboratory instruction and maintain equipment and facilities. By using stratified random sampling, survey questionnaires were distributes to engineering students who have been engaged in technical laboratory in one of the polytechnic in northern region. The data were analyzed using Statistical Package for Social Science (SPSS version13.0). The Pearson Correlation was use to measure the association between the variables. The study shows that there is a significant
relationship between lectures’
safety practice toward technical laboratory safety. Hence, safety practice adopted by lecture is a vital in realizing technical laboratory safety.
Technical laboratories are typically considered as highly hazardous places in the polytechnic ins... more Technical laboratories are typically considered as highly hazardous places in the polytechnic institution when addressing the problems of high incidences and fatality rates. In conjunction with several topics covered in the technical curricular, safety and health precaution should be highlighted in order to connect to few key ideas of being safe. Therefore the assessment of safety awareness in terms of safety and health about hazardous and risks at laboratories is needed and has to be incorporated with technical education and other training programmes. The purpose of this study was to determine the efficacy of technical laboratory safety in one of the polytechnics in northern region. The study examined three related issues that were; the availability of safety material and equipment, safety practice adopted by technical teachers and administrator's safety attitudes in enforcing safety to the students. A model of efficacy technical laboratory was developed to test the linear relationship between existing safety material and equipment, teachers' safety practice and administrators' attitude in enforcing safety and to identify which of technical laboratory safety issues was the most pertinent factor to realize safety in technical laboratory. This was done by analyzing survey-based data sets particularly those obtained from samples of 210 students in the polytechnic. The Pearson Correlation was used to measure the association between the variables and to test the research hypotheses. The result of the study has found that there was a significant correlation between existing safety material and equipment, safety practice adopted by teacher and administrator's attitude. There was also a significant relationship between technical laboratory safety and safety practice adopted by teacher and between technical laboratory safety and administrator attitude. Hence, safety practice adopted by teacher and administrator attitude is vital in realizing technical laboratory safety.
The practical implementation of advanced controlled system for an industrial application involves... more The practical implementation of advanced controlled system for an industrial application involves a wide variety of integrated field such as control electronics, power electronics, electric machine and drives. The ball and beam educational tool presented here allows student to work with all different fields. The system includes a ball, a beam, a motor, several sensors, intelligent drive and PC as a host. This educational tool involves the modelling process, analysis and control of the ball and beam system using Matlab/Simulink and experimental hardware. The control is designed in closed-loop system using PID tuning method. This research presents the very useful and influential laboratory system that provides PC-based control software that enable student to compare the simulation and experiment. Thus, it is easier for students to relate the theoretical concepts that they have learned in class. .
Dual motor drives fed by single inverter is purposely designed to reduced size and cost with resp... more Dual motor drives fed by single inverter is purposely designed to reduced size and cost with respect to single motor drives fed by single inverter. Previous researches on dual motor drives only focus on the modulation and the averaging techniques. Only a few of them, study the performance of the drives based on different speed controller other than Proportional and Integrator (PI) controller. This paper presents a detailed comparative study on fuzzy rule-base in Fuzzy Logic speed Controller (FLC) for Dual Permanent Magnet Synchronous Motor (PMSM) drives. Two fuzzy speed controllers which are standard and simplified fuzzy speed controllers are designed and the results are compared and evaluated. The standard fuzzy controller consists of 49 rules while the proposed controller consists of 9 rules determined by selecting the most dominant rules only. Both designs are compared for wide range of speed and the robustness of both controllers over load disturbance changes is tested to demonstrate the effectiveness of the simplified/reduced rulebase.
International Journal of Research in Engineering and Technology, 2013
The objective of this paper is to presents a practical implementation of field oriented control o... more The objective of this paper is to presents a practical implementation of field oriented control of three-phase induction motor based on Space Vector Pulse Width Modulation technique using Digital Signal Processing (DSP) board TMS320F2812. The control algorithm for the drive application is built with Code Composer Studio version 3.1. The motor control is divided into two control loops; inner current loop and outer speed control loop using PI controller. The rotor flux quantities are estimated using computational rotor time constant, rotor angular velocity and stator current. As a feedback of field oriented control, an incremental encoder is attached at the motor shaft and a Hall effect current sensor is used to detect the sent current to the motor. The performance of the drives system is tested under different speed command and load disturbances
Autism is a lifelong developmental disability that affects how people perceive the world and inte... more Autism is a lifelong developmental disability that affects how people perceive the world and interact with others. Most of these children have difficulty with fine motor skills which typically struggle with handwriting and fine activities in their routine life such as getting dressed and controlled use of the everyday tool. Because fine motor activities encompass so many routine functions, a fine motor delay can have a measurable negative impact on a person's ability to handle daily practical tasks. This project proposed a simple fine motor exercise aid plus the game (exergame) for autistic children who discover from fine motor difficulties. The proposed exergame will be blinking randomly and user needs to bend their finger accordingly. It will notify the user, whether they bend the right finger or not. The system is realized using Arduino, which is programmed to control all the operated circuit. The feasibility studies with six autistic children were conducted and found the chi...
Technical laboratories are typically considered as highly hazardous places in the polytechnic ins... more Technical laboratories are typically considered as highly hazardous places in the polytechnic institution when addressing the problems of high incidences and fatality rates. In conjunction with several topics covered in the technical curricular, safety and health precaution should be highlighted in order to connect to few key ideas of being safe. Therefore the assessment of safety awareness in terms of safety and health about hazardous and risks at laboratories is needed and has to be incorporated with technical education and other training programmes. The purpose of this study was to determine the efficacy of technical laboratory safety in one of the polytechnics in northern region. The study examined three related issues that were; the availability of safety material and equipment, safety practice adopted by technical teachers and administrator-s safety attitudes in enforcing safety to the students. A model of efficacy technical laboratory was developed to test the linear relation...
Autism is a lifelong developmental disability that affects how people perceive the world and inte... more Autism is a lifelong developmental disability that affects how people perceive the world and interact with others. Most of these children have difficulty with fine motor skills which typically struggle with handwriting and fine activities in their routine life such as getting dressed and controlled use of the everyday tool. Because fine motor activities encompass so many routine functions, a fine motor delay can have a measurable negative impact on a person's ability to handle daily practical tasks. This project proposed a simple fine motor exercise aid plus the game (exergame) for autistic children who discover from fine motor difficulties. The proposed exergame will be blinking randomly and user needs to bend their finger accordingly. It will notify the user, whether they bend the right finger or not. The system is realized using Arduino, which is programmed to control all the operated circuit. The feasibility studies with six autistic children were conducted and found the chi...
Indonesian Journal of Electrical Engineering and Computer Science, 2022
This paper aims to develop the sliding mode control (SMC) scheme in sensorless permanent magnet s... more This paper aims to develop the sliding mode control (SMC) scheme in sensorless permanent magnet synchronous machine (PMSM) drives to replace conventional proportional integral (PI) speed control. The SMC is formulated based on the integral sliding surface of the speed error. And the error is corrected based on the concept of Lyapunov stability. The SMC is designed with the load torque observer so that the disturbance can be estimated as feedback to the controller. The vector control technique which is also known as field-oriented control (FOC) is also used to split the stator current into the magnetic field generating part which is the direct axis and the torque generating part which is the quadrature axis. This can be done by using Park and Clarke transformations. The performance of the proposed SMC is tested under changes in load-torque and without load for different speed commands. The results prove that the SMC produces robust performances under variations of speeds and load dis...
International Journal of Power Electronics and Drive Systems (IJPEDS), 2017
This paper presents the comparative performances of Indirect Field Oriented Control (IFOC) for th... more This paper presents the comparative performances of Indirect Field Oriented Control (IFOC) for the three-phase induction motor. Recently, the interest of widely used the induction motor at industries because of reliability, ruggedness and almost free in maintenance. Thus, the IFOC scheme is employed to control the speed of induction motor. Therefore, P and PI controllers based on IFOC approach are analyzed at differences speed commands with no load condition. On the other hand, the PI controller is tuned based on Ziegler-Nichols method by using PSIM software which is user-friendly for simulations, design and analysis of motor drive, control loop and the power converter in power electronics studies. Subsequently, the simulated of P controller results are compared with the simulated of PI controller results at difference speed commands with no load condition. Finally, the simulated results of speed controllers are compared with the experimental results in order to explore the performa...
Power system protection is a branch of electrical power engineering that deals with the protectio... more Power system protection is a branch of electrical power engineering that deals with the protection of electrical power systems from faults through the isolation of faulted parts from the rest of the electrical network. Power System Protection is taught in polytechnic as a final semester subject for diploma student in electrical engineering, which consists of theoretical and practical work. As part of the syllabus, the course learning outcome on practical work is to produce students that can handle any practical work related to common protection system applied to power distribution system equipment. Most practical work related to Power System Protection subject is done using simulation environment, where the actual performance of protection equipment cannot be measured. This paper presents the configuration of Power System Protection laboratory that involves six experimental set of practical work for diploma student of Electrical Engineering Department in Politeknik Merlimau. Emphasi...
2016 8th Computer Science and Electronic Engineering (CEEC), 2016
Recently, fuzzy logic controllers have been recognized in induction motor drives systems for thei... more Recently, fuzzy logic controllers have been recognized in induction motor drives systems for their robust performance. Therefore, this paper presents a fuzzy logic (FL) control system based on FL approach for a vector controlled induction motor drives for high performance application. The analysis, design and simulation of the FL controller for vector control induction motor are carried out based on scaling factor and membership functions theory. First, the drives system was simulated with Standard Constant Parameter FL, Design Case Constant Parameter Fuzzy Logic and PI controller. Then the best performances of these controllers were compared to proposed optimized fuzzy logic controller (OFL). The OFL is done by tuning of scaling factor for the change in speed error, Gce to produce a better transient behaviour, and altering the width and moving the peak value positions of membership functions to improve control performance. The results show that the proposed OFL gives better performances in tracking performances and also load disturbances. The test is done in different operating conditions for half rated speed and full rated speed, half and full load condition. The results demonstrates the robustness and the effectiveness of OFL controller for high performance of induction motor drive system.
2016 8th Computer Science and Electronic Engineering (CEEC), 2016
Sliding mode control offers great potential to deal with uncertainties such as parameter variatio... more Sliding mode control offers great potential to deal with uncertainties such as parameter variation and external load disturbances in controlling induction motor drives. The main obstacle of conventional sliding mode control is the presence of chattering phenomenon. It is known that the large switching gain of sliding mode control is proportional to the chattering level, and normally a large switching gain is applied to handle the uncertainties. In this paper, this chattering phenomenon is significantly reduced by a newly developed algorithm. The control algorithm incorporates the adjustment of switching gain value and variation of the boundary layer to replace the discontinuous function in conventional sliding mode control. As a result, the boundary layer and the switching gain will change in the presence of uncertainties and load disturbances. The experimental results show the effectiveness of the proposed sliding mode control is superior in reducing the chattering phenomenon and handling the external load disturbances.
Chattering is undesirable phenomenon when dealing with sliding mode control. This paper proposed ... more Chattering is undesirable phenomenon when dealing with sliding mode control. This paper proposed a new method for addressing chattering with a simple and easy implementation in Digital Signal Processor (DSP). This is realized by replacing the discontinuous function in conventional sliding mode control with statedependent auto-tuning of boundary layer in fast sigmoid function and state-dependent switching gain, for threephase induction motor speed control. This method allows chattering reduction in control input, while keeping the robustness characteristics of sliding mode control. The performance of the proposed control is verified in emulation induction motor drives using Digital Signal Processor TMS320F2812 board, with different speed command and load disturbances.
The stability control of two separate electric vehicle (EV) motors by using only single five-leg ... more The stability control of two separate electric vehicle (EV) motors by using only single five-leg inverter (FLI) is the motivation of this study. This paper proposes an electric differential (ED) in a FLI to serve dual separate induction motor (IM) drive-based wheels of an EV traction drive system. FLI is developed to replace the two normal three-phase voltage source inverters that need to independently control the two separate IMs at each of the EV wheels. Stability problem will be tackled by electric differential (ED) algorithm. The proposed traction drive employs space vector pulse width modulation direct torque control (SVPWM DTC) modulator with duty cycle merging algorithm as the switching sequence of the FLI. This technique allowed any portion of DC bus voltage to be allocated to any motor. Simulations were performed. The resulting control performance; speed, torque, and current verified the stability and robustness of the system. This study implies that there is possibility of using only one inverter (FLI) in order to drive two separate IM drive-based wheels without jeopardizes the system stability and robustness.
This paper presents the simulation of three-phase induction motor drives using Indirect Field Ori... more This paper presents the simulation of three-phase induction motor drives using Indirect Field Oriented Control (IFOC) in PSIM environment. The asynchronous machine is well known about natural limitations fact of highly nonlinearity and complexity of motor model. In order to resolve these problems, the IFOC is applied to control the instantaneous electrical quantities such as torque and flux component. As FOC is controlling the stator current that represented by a vector, the torque component is aligned with d coordinate while the flux component is aligned with q coordinate. There are five levels of the incremental system are gradually built up to verify and testing the software module in the system. Indeed, all of system build levels are verified and successfully tested in PSIM environment. Moreover, the corresponding system of five build levels are simulated in PSIM environment which is user-friendly for simulation studies in order to explore the performance of speed responses based on IFOC algorithm for three-phase induction motor drives.
The exact parameter of the motor is essential especially to control in high performance applicati... more The exact parameter of the motor is essential especially to control in high performance application. Any mismatch of the motor parameters can be affected the performance of the motor. The parameter such as rotor resistance, stator resistance, mutual inductance, stator inductance, rotor inductance, moment of inertia and friction coefficient is needed to comprehend in term of using Field Oriented Control Technique to regulate this induction motor in high performance application. This paper present a step by step parameter determination of three phase squirrel cage induction motor using experimental design namely no-load test and locked rotor test. Then the simulation models were developed to verify the experimental result. The parameter obtained will assist to realize the induction motor control using Field Oriented Control technique.
The practical implementation of advanced controlled system for an industrial application involves... more The practical implementation of advanced controlled system for an industrial application involves a wide variety of integrated field such as control electronics, power electronics, electric machine and drives. The ball and beam educational tool presented here allows student to work with all different fields. The system includes a ball, a beam, a motor, several sensors, intelligent drive and PC as a host. This educational tool involves the modelling process, analysis and control of the ball and beam system using Matlab/Simulink and experimental hardware. The control is designed in closed-loop system using PID tuning method. This research presents the very useful and influential laboratory system that provides PC-based control software that enable student to compare the simulation and experiment. Thus, it is easier for students to relate the theoretical concepts that they have learned in class.
With regard in increasing awareness of Occupational Safety and Health issue in Malaysia, lecturer... more With regard in increasing awareness of Occupational Safety and Health issue in Malaysia, lecturer in technical institution are not exempted to give consciousness towards their students. Lecturers are bear with climate of accountability and liability for the safe conduct of laboratory process. With careful practice, most of the dangers in technical laboratory can be avoided. Therefore, this paper is attempted to focus technical laboratory safety related
to lecturers’ safety practice.
The study giving emphasis on supervision, present proper safety and laboratory instruction and maintain equipment and facilities. By using stratified random sampling, survey questionnaires were distributes to engineering students who have been engaged in technical laboratory in one of the polytechnic in northern region. The data were analyzed using Statistical Package for Social Science (SPSS version13.0). The Pearson Correlation was use to measure the association between the variables. The study shows that there is a significant
relationship between lectures’
safety practice toward technical laboratory safety. Hence, safety practice adopted by lecture is a vital in realizing technical laboratory safety.
Technical laboratories are typically considered as highly hazardous places in the polytechnic ins... more Technical laboratories are typically considered as highly hazardous places in the polytechnic institution when addressing the problems of high incidences and fatality rates. In conjunction with several topics covered in the technical curricular, safety and health precaution should be highlighted in order to connect to few key ideas of being safe. Therefore the assessment of safety awareness in terms of safety and health about hazardous and risks at laboratories is needed and has to be incorporated with technical education and other training programmes. The purpose of this study was to determine the efficacy of technical laboratory safety in one of the polytechnics in northern region. The study examined three related issues that were; the availability of safety material and equipment, safety practice adopted by technical teachers and administrator's safety attitudes in enforcing safety to the students. A model of efficacy technical laboratory was developed to test the linear relationship between existing safety material and equipment, teachers' safety practice and administrators' attitude in enforcing safety and to identify which of technical laboratory safety issues was the most pertinent factor to realize safety in technical laboratory. This was done by analyzing survey-based data sets particularly those obtained from samples of 210 students in the polytechnic. The Pearson Correlation was used to measure the association between the variables and to test the research hypotheses. The result of the study has found that there was a significant correlation between existing safety material and equipment, safety practice adopted by teacher and administrator's attitude. There was also a significant relationship between technical laboratory safety and safety practice adopted by teacher and between technical laboratory safety and administrator attitude. Hence, safety practice adopted by teacher and administrator attitude is vital in realizing technical laboratory safety.
The practical implementation of advanced controlled system for an industrial application involves... more The practical implementation of advanced controlled system for an industrial application involves a wide variety of integrated field such as control electronics, power electronics, electric machine and drives. The ball and beam educational tool presented here allows student to work with all different fields. The system includes a ball, a beam, a motor, several sensors, intelligent drive and PC as a host. This educational tool involves the modelling process, analysis and control of the ball and beam system using Matlab/Simulink and experimental hardware. The control is designed in closed-loop system using PID tuning method. This research presents the very useful and influential laboratory system that provides PC-based control software that enable student to compare the simulation and experiment. Thus, it is easier for students to relate the theoretical concepts that they have learned in class. .
Dual motor drives fed by single inverter is purposely designed to reduced size and cost with resp... more Dual motor drives fed by single inverter is purposely designed to reduced size and cost with respect to single motor drives fed by single inverter. Previous researches on dual motor drives only focus on the modulation and the averaging techniques. Only a few of them, study the performance of the drives based on different speed controller other than Proportional and Integrator (PI) controller. This paper presents a detailed comparative study on fuzzy rule-base in Fuzzy Logic speed Controller (FLC) for Dual Permanent Magnet Synchronous Motor (PMSM) drives. Two fuzzy speed controllers which are standard and simplified fuzzy speed controllers are designed and the results are compared and evaluated. The standard fuzzy controller consists of 49 rules while the proposed controller consists of 9 rules determined by selecting the most dominant rules only. Both designs are compared for wide range of speed and the robustness of both controllers over load disturbance changes is tested to demonstrate the effectiveness of the simplified/reduced rulebase.
International Journal of Research in Engineering and Technology, 2013
The objective of this paper is to presents a practical implementation of field oriented control o... more The objective of this paper is to presents a practical implementation of field oriented control of three-phase induction motor based on Space Vector Pulse Width Modulation technique using Digital Signal Processing (DSP) board TMS320F2812. The control algorithm for the drive application is built with Code Composer Studio version 3.1. The motor control is divided into two control loops; inner current loop and outer speed control loop using PI controller. The rotor flux quantities are estimated using computational rotor time constant, rotor angular velocity and stator current. As a feedback of field oriented control, an incremental encoder is attached at the motor shaft and a Hall effect current sensor is used to detect the sent current to the motor. The performance of the drives system is tested under different speed command and load disturbances