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Papers by Khairulnizam Othman

Research paper thumbnail of Power Generation Piezoelectric Vibration for Mecanical Sensor

International Conference on Mechanical and Manufacturing Engineering (ICME2015), Aug 24, 2015

Proper Power generation piezoelectric vibrations have been proven to be an attractive technology ... more Proper Power generation piezoelectric vibrations have been proven to be an attractive technology for harvesting small magnitudes of energy from ambient vibrations. In recent years, energy harvesting to obtain electrical energy from the energy that exists around the body (energy harvesting) technology is attracting attention. This work investigates the optimization of a micro piezoelectric cantilever system using a genetic algorithm based approach with numerical simulations. The genetic algorithm globally considers the effects of each parameter to produce an optimal frequency response to scavenge more energy from the real vibrations while the conventional sinusoidal based method can only optimize the resistive load for a given resonant frequency. Focus on the method of using the electrostatic induction which gives high conversion efficiency. Step by step manufacturing process slider chip discussed. Research toward an independence operation of the fabrication mechanical sensor network terminal and introduces the micro vibration power generation technology has been developed. Experimental acceleration data from the vibrations cover demonstrates that the optimized harvester automatically selects the right frequency and also synchronously optimizes the damper and the resistive load beneficial in contributing a performance wise for output energy. This method shows great potential for optimizing the energy harvesting systems with real vibration data.

Research paper thumbnail of Mechanical Water Pump Using Double Manifold Tank Hydram

Multidisciplinary Applied Research and Innovation, May 24, 2021

Research paper thumbnail of Power Generation Piezoelectric Vibration for Mecanical Sensor

Proper Power generation piezoelectric vibrations have been proven to be an attractive technology ... more Proper Power generation piezoelectric vibrations have been proven to be an attractive technology for harvesting small magnitudes of energy from ambient vibrations. In recent years, energy harvesting to obtain electrical energy from the energy that exists around the body (energy harvesting) technology is attracting attention. This work investigates the optimization of a micro piezoelectric cantilever system using a genetic algorithm based approach with numerical simulations. The genetic algorithm globally considers the effects of each parameter to produce an optimal frequency response to scavenge more energy from the real vibrations while the conventional sinusoidal based method can only optimize the resistive load for a given resonant frequency. Focus on the method of using the electrostatic induction which gives high conversion efficiency. Step by step manufacturing process slider chip discussed. Research toward an independence operation of the fabrication mechanical sensor network...

Research paper thumbnail of Power generation piezoelectric vibration for sensor

Proper Power generation piezoelectric vibrations have been proven to be an attractive technology ... more Proper Power generation piezoelectric vibrations have been proven to be an attractive technology for harvesting small magnitudes of energy from ambient vibrations. In recent years, energy harvesting to obtain electrical energy from the energy that exists around the body (energy harvesting) technology is attracting attention. This work investigates the optimization of a micro piezoelectric cantilever system using a genetic algorithm based approach with numerical simulations. The genetic algorithm globally considers the effects of each parameter to produce an optimal frequency response to scavenge more energy from the real vibrations while the conventional sinusoidal based method can only optimize the resistive load for a given resonant frequency. Focus on the method of using the electrostatic induction which gives high conversion efficiency. Step by step manufacturing process slider chip discussed. Research toward an independence operation of the fabrication mechanical sensor network...

Research paper thumbnail of An Effective Alternative Structural Similarity Index Algorithm

International Academy of Engineers (IA-E), August 25-26, 2015 Kuala Lumpur, Malaysia, 2015

Real-time image quality assessment algorithms is an important, outcome research is dedicated to i... more Real-time image quality assessment algorithms is an important, outcome research is dedicated to improving this practice. Towards this end, a design of real-time implementable full-reference image or video quality algorithms that are based on the Structural Similarity (SSIM) index and multi-scale SSIM (MS-SSIM) index preferred. The proposed algorithms merged into one single updating process. LIVE image quality database used to evaluate their improvement in form of computational complexity. Experimental results show that the proposed algorithm is an effective alternative for real-time image Structural Similarity with low area cost (time).

Research paper thumbnail of Dynamics Control of Pendulums Driven Spherical Robot

Applied Mechanics and Materials, 2013

The pendulum driven spherical robot exhibit unique dynamic behavior which designed for reconnaiss... more The pendulum driven spherical robot exhibit unique dynamic behavior which designed for reconnaissance and unstructured hostile environment exploration. Unfortunately spherical type robot maneuvering is nonlinear to get the desired part, internal propulsion mechanism and motion control need to be reconciled. This is a mechanical challenge to get in balancing and weight distribution. The robot has three DOFs and single inputs, of which the nature is a nonlinear and under actuated system with non-holonomic dynamic constraints. The enhanced construction of two sections on pendulums joint offers novel motion principle of spherical robot, which is moving simultaneously actuated by eccentric moment and inertial moment generated by this pendulum. Meanwhile the mobility is enhanced when the robot behaves dynamically. The dynamic model of linear motion is formulated on the basis of Lagrange equation, and a smooth trajectory planning method is proposed for linear motion. A feedback controller ...

Research paper thumbnail of Quantification and Segmentation of Breast Cancer Diagnosis: Efficient Hardware Accelerator Approach

Research paper thumbnail of Mechanical Structure Optimization of Pipe Inspection Robot for Domestic Water Pipe Line

Mechanical design pipe inspection robot with various pipe diameter adaptability and automatic tra... more Mechanical design pipe inspection robot with various pipe diameter adaptability and automatic traction force installing is developed for long distance inspection of main water pipe nondestructive evaluation and health monitoring with different diameter series. On the basis of analyzing the mechanical actions of the adaptation to pipe diameter and traction force installing, the related mechanical models are established, and their control system structure and control strategy are discussed. The experimental results show that the theoretical analysis in this research is valid and the prototype of this robot can work well in actual underground water pipelines. As a mobile carrier for visual inspection and non-destructive testing to monitor block, corrosion, crack, defect, and wall thickness of main water pipelines, its inspection range extended around 1000 m wireless. Design and implementation consists in SCIREA Journal of Mechanical Engineering http://www.scirea.org/journal/Mechanical ...

Research paper thumbnail of New Embedded Denotes Fuzzy C-Mean Application for Breast Cancer Density Segmentation in Digital Mammograms

IOP Conference Series: Materials Science and Engineering, 2016

Research paper thumbnail of Lampiran 1 PUSAT TANGGUNGJAWAB TARIKH Fakulti Sains, Teknologi dan Pembangunan Insan Fakulti Kejuruteraan Awam dan Alam Sekitar

Research paper thumbnail of Power Generation Piezoelectric Vibration for Mecanical Sensor

International Conference on Mechanical and Manufacturing Engineering (ICME2015), Aug 24, 2015

Proper Power generation piezoelectric vibrations have been proven to be an attractive technology ... more Proper Power generation piezoelectric vibrations have been proven to be an attractive technology for harvesting small magnitudes of energy from ambient vibrations. In recent years, energy harvesting to obtain electrical energy from the energy that exists around the body (energy harvesting) technology is attracting attention. This work investigates the optimization of a micro piezoelectric cantilever system using a genetic algorithm based approach with numerical simulations. The genetic algorithm globally considers the effects of each parameter to produce an optimal frequency response to scavenge more energy from the real vibrations while the conventional sinusoidal based method can only optimize the resistive load for a given resonant frequency. Focus on the method of using the electrostatic induction which gives high conversion efficiency. Step by step manufacturing process slider chip discussed. Research toward an independence operation of the fabrication mechanical sensor network terminal and introduces the micro vibration power generation technology has been developed. Experimental acceleration data from the vibrations cover demonstrates that the optimized harvester automatically selects the right frequency and also synchronously optimizes the damper and the resistive load beneficial in contributing a performance wise for output energy. This method shows great potential for optimizing the energy harvesting systems with real vibration data.

Research paper thumbnail of Mechanical Water Pump Using Double Manifold Tank Hydram

Multidisciplinary Applied Research and Innovation, May 24, 2021

Research paper thumbnail of Power Generation Piezoelectric Vibration for Mecanical Sensor

Proper Power generation piezoelectric vibrations have been proven to be an attractive technology ... more Proper Power generation piezoelectric vibrations have been proven to be an attractive technology for harvesting small magnitudes of energy from ambient vibrations. In recent years, energy harvesting to obtain electrical energy from the energy that exists around the body (energy harvesting) technology is attracting attention. This work investigates the optimization of a micro piezoelectric cantilever system using a genetic algorithm based approach with numerical simulations. The genetic algorithm globally considers the effects of each parameter to produce an optimal frequency response to scavenge more energy from the real vibrations while the conventional sinusoidal based method can only optimize the resistive load for a given resonant frequency. Focus on the method of using the electrostatic induction which gives high conversion efficiency. Step by step manufacturing process slider chip discussed. Research toward an independence operation of the fabrication mechanical sensor network...

Research paper thumbnail of Power generation piezoelectric vibration for sensor

Proper Power generation piezoelectric vibrations have been proven to be an attractive technology ... more Proper Power generation piezoelectric vibrations have been proven to be an attractive technology for harvesting small magnitudes of energy from ambient vibrations. In recent years, energy harvesting to obtain electrical energy from the energy that exists around the body (energy harvesting) technology is attracting attention. This work investigates the optimization of a micro piezoelectric cantilever system using a genetic algorithm based approach with numerical simulations. The genetic algorithm globally considers the effects of each parameter to produce an optimal frequency response to scavenge more energy from the real vibrations while the conventional sinusoidal based method can only optimize the resistive load for a given resonant frequency. Focus on the method of using the electrostatic induction which gives high conversion efficiency. Step by step manufacturing process slider chip discussed. Research toward an independence operation of the fabrication mechanical sensor network...

Research paper thumbnail of An Effective Alternative Structural Similarity Index Algorithm

International Academy of Engineers (IA-E), August 25-26, 2015 Kuala Lumpur, Malaysia, 2015

Real-time image quality assessment algorithms is an important, outcome research is dedicated to i... more Real-time image quality assessment algorithms is an important, outcome research is dedicated to improving this practice. Towards this end, a design of real-time implementable full-reference image or video quality algorithms that are based on the Structural Similarity (SSIM) index and multi-scale SSIM (MS-SSIM) index preferred. The proposed algorithms merged into one single updating process. LIVE image quality database used to evaluate their improvement in form of computational complexity. Experimental results show that the proposed algorithm is an effective alternative for real-time image Structural Similarity with low area cost (time).

Research paper thumbnail of Dynamics Control of Pendulums Driven Spherical Robot

Applied Mechanics and Materials, 2013

The pendulum driven spherical robot exhibit unique dynamic behavior which designed for reconnaiss... more The pendulum driven spherical robot exhibit unique dynamic behavior which designed for reconnaissance and unstructured hostile environment exploration. Unfortunately spherical type robot maneuvering is nonlinear to get the desired part, internal propulsion mechanism and motion control need to be reconciled. This is a mechanical challenge to get in balancing and weight distribution. The robot has three DOFs and single inputs, of which the nature is a nonlinear and under actuated system with non-holonomic dynamic constraints. The enhanced construction of two sections on pendulums joint offers novel motion principle of spherical robot, which is moving simultaneously actuated by eccentric moment and inertial moment generated by this pendulum. Meanwhile the mobility is enhanced when the robot behaves dynamically. The dynamic model of linear motion is formulated on the basis of Lagrange equation, and a smooth trajectory planning method is proposed for linear motion. A feedback controller ...

Research paper thumbnail of Quantification and Segmentation of Breast Cancer Diagnosis: Efficient Hardware Accelerator Approach

Research paper thumbnail of Mechanical Structure Optimization of Pipe Inspection Robot for Domestic Water Pipe Line

Mechanical design pipe inspection robot with various pipe diameter adaptability and automatic tra... more Mechanical design pipe inspection robot with various pipe diameter adaptability and automatic traction force installing is developed for long distance inspection of main water pipe nondestructive evaluation and health monitoring with different diameter series. On the basis of analyzing the mechanical actions of the adaptation to pipe diameter and traction force installing, the related mechanical models are established, and their control system structure and control strategy are discussed. The experimental results show that the theoretical analysis in this research is valid and the prototype of this robot can work well in actual underground water pipelines. As a mobile carrier for visual inspection and non-destructive testing to monitor block, corrosion, crack, defect, and wall thickness of main water pipelines, its inspection range extended around 1000 m wireless. Design and implementation consists in SCIREA Journal of Mechanical Engineering http://www.scirea.org/journal/Mechanical ...

Research paper thumbnail of New Embedded Denotes Fuzzy C-Mean Application for Breast Cancer Density Segmentation in Digital Mammograms

IOP Conference Series: Materials Science and Engineering, 2016

Research paper thumbnail of Lampiran 1 PUSAT TANGGUNGJAWAB TARIKH Fakulti Sains, Teknologi dan Pembangunan Insan Fakulti Kejuruteraan Awam dan Alam Sekitar