Md Nishat Anwar | NIT Patna (original) (raw)

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Papers by Md Nishat Anwar

Research paper thumbnail of PI controller with decoupler design for SIDO buck converter based on frequency response approximation

2022 IEEE 1st Industrial Electronics Society Annual On-Line Conference (ONCON)

Research paper thumbnail of PI controller design for pitch control of large wind turbine generator

2015 International Conference on Energy, Power and Environment: Towards Sustainable Growth (ICEPE), 2015

In large horizontal axis wind turbines blade pitch control is important in order to keep the stru... more In large horizontal axis wind turbines blade pitch control is important in order to keep the structural loads within design limits at high wind speed. The system dynamics is highly oscillatory along with the time delay in the hydraulic pressure driven pitch control system and in certain turbine configurations and operating conditions, it may have inverse response dynamics which make the system further difficult to control. In this paper a proportional-integral (PI) controller for pitch angle control is proposed which is based on direct synthesis (DS) approach for achieving a desired response. The PI controller is derived from the DS controller by an approximate frequency response matching. The method is illustrated through examples taken from the literature and compared with a method prevalent in the literature.

Research paper thumbnail of PID Controller Tuning in Smith Predictor Configuration for Stable Processes with Large Time Delay Using IMC Scheme

Innovations in Soft Computing and Information Technology, 2019

A PID controller design method through IMC scheme to work in Smith predictor configuration for pr... more A PID controller design method through IMC scheme to work in Smith predictor configuration for processes having long dead time is presented in this paper. The Smith predictor controller is obtained via IMC scheme, and then the PID controller is derived by frequency response matching. As the approximation of the controller is involved in frequency domain, the method is applicable for both high-order and low-order processes. The efficacy of the method is illustrated through simulation of different examples and performance improvement is observed.

Research paper thumbnail of A frequency domain design of PID controller for an AVR system

Journal of Zhejiang University SCIENCE C, 2014

We propose a new proportional-integral-derivative (PID) controller design method for an automatic... more We propose a new proportional-integral-derivative (PID) controller design method for an automatic voltage regulation (AVR) system based on approximate model matching in the frequency domain. The parameters of the PID controller are obtained by approximate frequency response matching between the closed-loop control system and a reference model with the desired specifications. Two low frequency points are required for matching the frequency response, and the design method yields linear algebraic equations, solution of which gives the controller parameters. The effectiveness of the proposed method is demonstrated through examples taken from the literature and comparison with some popular methods.

Research paper thumbnail of A new PID load frequency controller design method in frequency domain through direct synthesis approach

International Journal of Electrical Power & Energy Systems, 2015

In this paper a new PID controller design method based on the direct synthesis (DS) approach of c... more In this paper a new PID controller design method based on the direct synthesis (DS) approach of controller design in frequency domain is presented. The parameters of the PID controller are obtained through frequency response matching with the DS controller. The method yields linear algebraic equations, solution of which gives the controller parameters. The design method has been developed for single-area as well as multi-area power systems. Non-linearity like the generation rate constraint (GRC) has been considered. Several examples are taken from the literature to demonstrate the effectiveness of the proposed method in comparison with some prevalent design methods.

Research paper thumbnail of Synthesis of the PID controller using desired closed-loop response

IFAC Proceedings Volumes, 2013

In this paper a design method for proportional-integral-derivative (PID) controller based on inte... more In this paper a design method for proportional-integral-derivative (PID) controller based on internal model control (IMC) principle is proposed. A feedback controller equivalent to internal model control is obtained and then PID controller is derived by an approximate frequency response matching at two low frequency points. A simple and meaningful criterion is provided to choose such low frequency points. The method is illustrated through examples taken from literature.

Research paper thumbnail of A frequency response model matching method for PID controller design for processes with dead-time

ISA Transactions, 2015

In this paper, a PID controller design method for the integrating processes based on frequency re... more In this paper, a PID controller design method for the integrating processes based on frequency response matching is presented. Two approaches are proposed for the controller design. In the first approach, a double feedback loop configuration is considered where the inner loop is designed with a stabilizing gain. In the outer loop, the parameters of the PID controller are obtained by frequency response matching between the closed-loop system with the PID controller and a reference model with desired specifications. In the second approach, the design is directly carried out considering a desired load-disturbance rejection model of the system. In both the approaches, two low frequency points are considered for matching the frequency response, which yield linear algebraic equations, solution of which gives the controller parameters. Several examples are taken from the literature to demonstrate the effectiveness and to compare with some well known design methods.

Research paper thumbnail of PID Controller Tuning in Smith Predictor Configuration for Stable Processes with Large Time Delay Using IMC Scheme

Innovations in Soft Computing and Information Technology, 2019

A PID controller design method through IMC scheme to work in Smith predictor configuration for pr... more A PID controller design method through IMC scheme to work in Smith predictor configuration for processes having long dead time is presented in this paper. The Smith predictor controller is obtained via IMC scheme, and then the PID controller is derived by frequency response matching. As the approximation of the controller is involved in frequency domain, the method is applicable for both high-order and low-order processes. The efficacy of the method is illustrated through simulation of different examples and performance improvement is observed.

Research paper thumbnail of A Frequency Domain PID Controller Design Method Using Direct Synthesis Approach

Arabian Journal for Science and Engineering, 2015

Research paper thumbnail of A Frequency Response Matching Method for PID Controller Design for Industrial Processes with Time Delay

Communications in Computer and Information Science, 2013

ABSTRACT

Research paper thumbnail of A Frequency Domain PID Controller Design Method Using Direct Synthesis Approach

In this study, the PID controller design method based on direct synthesis approach for achieving ... more In this study, the PID controller design method based on direct synthesis approach for achieving the desired set-point or load-disturbance response is proposed. The PID controller is derived using an approximate frequencyresponse-matching criteria. A simple criterion has been also provided to choose the frequency points for matching of the proposed PID controller with the desired direct synthesis controller. It is a unified approach which deals with broad class of processes including integrating and inverse response, and it is directly applicable to any order of process with time delay. The ideal controller based on the direct synthesis approach has been directly approximated to the PID controller in desired frequency range. Therefore, the proposed method is free from model reduction in high-order process to low-order process and also rational approximation of the time-delay term e −sL . The advantage of method is illustrated through examples taken from the literature and compared with some of the well-known methods.

Research paper thumbnail of A new PID load frequency controller design method in frequency domain through direct synthesis approach

In this paper a new PID controller design method based on the direct synthesis (DS) approach of c... more In this paper a new PID controller design method based on the direct synthesis (DS) approach of controller design in frequency domain is presented. The parameters of the PID controller are obtained through frequency response matching with the DS controller. The method yields linear algebraic equations, solution of which gives the controller parameters. The design method has been developed for single-area as well as multi-area power systems. Non-linearity like the generation rate constraint (GRC) has been considered. Several examples are taken from the literature to demonstrate the effectiveness of the proposed method in comparison with some prevalent design methods.

Research paper thumbnail of A frequency response model matching method for PID controller design for processes with dead-time

In this paper, a PID controller design method for the integrating processes based on frequency re... more In this paper, a PID controller design method for the integrating processes based on frequency response matching is presented. Two approaches are proposed for the controller design. In the first approach, a double feedback loop configuration is considered where the inner loop is designed with a stabilizing gain. In the outer loop, the parameters of the PID controller are obtained by frequency response matching between the closed-loop system with the PID controller and a reference model with desired specifications. In the second approach, the design is directly carried out considering a desired loaddisturbance rejection model of the system. In both the approaches, two low frequency points are considered for matching the frequency response, which yield linear algebraic equations, solution of which gives the controller parameters. Several examples are taken from the literature to demonstrate the effectiveness and to compare with some well known design methods.

Research paper thumbnail of PI controller with decoupler design for SIDO buck converter based on frequency response approximation

2022 IEEE 1st Industrial Electronics Society Annual On-Line Conference (ONCON)

Research paper thumbnail of PI controller design for pitch control of large wind turbine generator

2015 International Conference on Energy, Power and Environment: Towards Sustainable Growth (ICEPE), 2015

In large horizontal axis wind turbines blade pitch control is important in order to keep the stru... more In large horizontal axis wind turbines blade pitch control is important in order to keep the structural loads within design limits at high wind speed. The system dynamics is highly oscillatory along with the time delay in the hydraulic pressure driven pitch control system and in certain turbine configurations and operating conditions, it may have inverse response dynamics which make the system further difficult to control. In this paper a proportional-integral (PI) controller for pitch angle control is proposed which is based on direct synthesis (DS) approach for achieving a desired response. The PI controller is derived from the DS controller by an approximate frequency response matching. The method is illustrated through examples taken from the literature and compared with a method prevalent in the literature.

Research paper thumbnail of PID Controller Tuning in Smith Predictor Configuration for Stable Processes with Large Time Delay Using IMC Scheme

Innovations in Soft Computing and Information Technology, 2019

A PID controller design method through IMC scheme to work in Smith predictor configuration for pr... more A PID controller design method through IMC scheme to work in Smith predictor configuration for processes having long dead time is presented in this paper. The Smith predictor controller is obtained via IMC scheme, and then the PID controller is derived by frequency response matching. As the approximation of the controller is involved in frequency domain, the method is applicable for both high-order and low-order processes. The efficacy of the method is illustrated through simulation of different examples and performance improvement is observed.

Research paper thumbnail of A frequency domain design of PID controller for an AVR system

Journal of Zhejiang University SCIENCE C, 2014

We propose a new proportional-integral-derivative (PID) controller design method for an automatic... more We propose a new proportional-integral-derivative (PID) controller design method for an automatic voltage regulation (AVR) system based on approximate model matching in the frequency domain. The parameters of the PID controller are obtained by approximate frequency response matching between the closed-loop control system and a reference model with the desired specifications. Two low frequency points are required for matching the frequency response, and the design method yields linear algebraic equations, solution of which gives the controller parameters. The effectiveness of the proposed method is demonstrated through examples taken from the literature and comparison with some popular methods.

Research paper thumbnail of A new PID load frequency controller design method in frequency domain through direct synthesis approach

International Journal of Electrical Power & Energy Systems, 2015

In this paper a new PID controller design method based on the direct synthesis (DS) approach of c... more In this paper a new PID controller design method based on the direct synthesis (DS) approach of controller design in frequency domain is presented. The parameters of the PID controller are obtained through frequency response matching with the DS controller. The method yields linear algebraic equations, solution of which gives the controller parameters. The design method has been developed for single-area as well as multi-area power systems. Non-linearity like the generation rate constraint (GRC) has been considered. Several examples are taken from the literature to demonstrate the effectiveness of the proposed method in comparison with some prevalent design methods.

Research paper thumbnail of Synthesis of the PID controller using desired closed-loop response

IFAC Proceedings Volumes, 2013

In this paper a design method for proportional-integral-derivative (PID) controller based on inte... more In this paper a design method for proportional-integral-derivative (PID) controller based on internal model control (IMC) principle is proposed. A feedback controller equivalent to internal model control is obtained and then PID controller is derived by an approximate frequency response matching at two low frequency points. A simple and meaningful criterion is provided to choose such low frequency points. The method is illustrated through examples taken from literature.

Research paper thumbnail of A frequency response model matching method for PID controller design for processes with dead-time

ISA Transactions, 2015

In this paper, a PID controller design method for the integrating processes based on frequency re... more In this paper, a PID controller design method for the integrating processes based on frequency response matching is presented. Two approaches are proposed for the controller design. In the first approach, a double feedback loop configuration is considered where the inner loop is designed with a stabilizing gain. In the outer loop, the parameters of the PID controller are obtained by frequency response matching between the closed-loop system with the PID controller and a reference model with desired specifications. In the second approach, the design is directly carried out considering a desired load-disturbance rejection model of the system. In both the approaches, two low frequency points are considered for matching the frequency response, which yield linear algebraic equations, solution of which gives the controller parameters. Several examples are taken from the literature to demonstrate the effectiveness and to compare with some well known design methods.

Research paper thumbnail of PID Controller Tuning in Smith Predictor Configuration for Stable Processes with Large Time Delay Using IMC Scheme

Innovations in Soft Computing and Information Technology, 2019

A PID controller design method through IMC scheme to work in Smith predictor configuration for pr... more A PID controller design method through IMC scheme to work in Smith predictor configuration for processes having long dead time is presented in this paper. The Smith predictor controller is obtained via IMC scheme, and then the PID controller is derived by frequency response matching. As the approximation of the controller is involved in frequency domain, the method is applicable for both high-order and low-order processes. The efficacy of the method is illustrated through simulation of different examples and performance improvement is observed.

Research paper thumbnail of A Frequency Domain PID Controller Design Method Using Direct Synthesis Approach

Arabian Journal for Science and Engineering, 2015

Research paper thumbnail of A Frequency Response Matching Method for PID Controller Design for Industrial Processes with Time Delay

Communications in Computer and Information Science, 2013

ABSTRACT

Research paper thumbnail of A Frequency Domain PID Controller Design Method Using Direct Synthesis Approach

In this study, the PID controller design method based on direct synthesis approach for achieving ... more In this study, the PID controller design method based on direct synthesis approach for achieving the desired set-point or load-disturbance response is proposed. The PID controller is derived using an approximate frequencyresponse-matching criteria. A simple criterion has been also provided to choose the frequency points for matching of the proposed PID controller with the desired direct synthesis controller. It is a unified approach which deals with broad class of processes including integrating and inverse response, and it is directly applicable to any order of process with time delay. The ideal controller based on the direct synthesis approach has been directly approximated to the PID controller in desired frequency range. Therefore, the proposed method is free from model reduction in high-order process to low-order process and also rational approximation of the time-delay term e −sL . The advantage of method is illustrated through examples taken from the literature and compared with some of the well-known methods.

Research paper thumbnail of A new PID load frequency controller design method in frequency domain through direct synthesis approach

In this paper a new PID controller design method based on the direct synthesis (DS) approach of c... more In this paper a new PID controller design method based on the direct synthesis (DS) approach of controller design in frequency domain is presented. The parameters of the PID controller are obtained through frequency response matching with the DS controller. The method yields linear algebraic equations, solution of which gives the controller parameters. The design method has been developed for single-area as well as multi-area power systems. Non-linearity like the generation rate constraint (GRC) has been considered. Several examples are taken from the literature to demonstrate the effectiveness of the proposed method in comparison with some prevalent design methods.

Research paper thumbnail of A frequency response model matching method for PID controller design for processes with dead-time

In this paper, a PID controller design method for the integrating processes based on frequency re... more In this paper, a PID controller design method for the integrating processes based on frequency response matching is presented. Two approaches are proposed for the controller design. In the first approach, a double feedback loop configuration is considered where the inner loop is designed with a stabilizing gain. In the outer loop, the parameters of the PID controller are obtained by frequency response matching between the closed-loop system with the PID controller and a reference model with desired specifications. In the second approach, the design is directly carried out considering a desired loaddisturbance rejection model of the system. In both the approaches, two low frequency points are considered for matching the frequency response, which yield linear algebraic equations, solution of which gives the controller parameters. Several examples are taken from the literature to demonstrate the effectiveness and to compare with some well known design methods.