The Experts below are selected from a list of 7335 Experts worldwide ranked by ideXlab platform
M.k. Kazimierczuk - One of the best experts on this subject based on the ideXlab platform.
-
Robust stability of Integral Control of PWM dc-dc converters
AIP Conference Proceedings, 2008Co-Authors: D. Czarkowski, L. Rai Pujara, M.k. KazimierczukAbstract:There is a strong demand for power supplies that are operated under switched load conditions. The Integral Control scheme has been chosen recently by the authors to design a pulse‐width modulated (PWM) converter for such applications. This scheme is able to accommodate disturbances to the system as long as the system remains stable. The stability of the closed‐loop system can be adversely affected by the tolerance of the component values. This paper presents an analysis of robust stability of the closed‐loop PWM push‐pull DC–DC converter with an Integral Control using the Kharitonov’s theorem. It is found that the designed system is stable in the specified range of the component values.
-
Application of state feedback with Integral Control to pulse-width modulated push-pull DC-DC convertor
IEE Proceedings - Control Theory and Applications, 1994Co-Authors: D. Czarkowski, M.k. KazimierczukAbstract:The well-known state feedback with Integral Control is applied to the multioperating point pulse-width modulated push-pull DC-DC convertor. A new large-signal circuit model of the power stage is modified so that the load resistance is eliminated from the system matrix. Two closed-loop continuous-conduction mode push-pull convertors are designed using a pole-placement technique: (a) a conventional convertor with a diode rectifier; and (b) a convertor with a small inductor and a bidirectional power flow. The large-signal dynamic performance of these convertors is investigated by simulations in the time domain. It was found that the state feedback with Integral Control in the bidirectional power-flow convertor is suitable for switched-load applications, e.g. radar systems, dot-matrix printers, and power supplies for random-access computer memories.
-
Integral Control of PWM DC-DC buck-derived converters
[Proceedings 1992] The First IEEE Conference on Control Applications, 1992Co-Authors: D. Czarkowski, M.k. KazimierczukAbstract:A concept of Integral Control is applied to multi-operating-point, buck-derived, pulse-width-modulated (PWM) DC-DC converters. A large-signal circuit model of the power stage is introduced, allowing the load resistance to be eliminated from the system matrix. Two closed-loop, continuous-conduction-mode, push-pull converters are designed using the pole-placement technique: a conventional converter and a converter with a small inductor achievable by a bidirectional power flow. The large-signal dynamic performance of these converters is investigated by simulations in the time domain. The bidirectional power flow converter with Integral Control was found to be suitable in switched load applications, e.g., radar systems dot-matrix printers and power supplies for random-access computer memories.
T. Kusik - One of the best experts on this subject based on the ideXlab platform.
-
New results in NPID Control: Tracking, Integral Control, friction compensation and experimental results
IEEE Transactions on Control Systems Technology, 2001Co-Authors: B. Armstrong, D. Neevel, T. KusikAbstract:Nonlinear proportional-Integral-derivative (NPID) Control is implemented by varying the Controller gains as a function of system state. NPID Control has been previously described and implemented, and recently a constructive Lyapunov stability proof has been given. Here, NPID Control analysis and design methods are extended to tracking, and to systems with state feedback and Integral Control. Experimental results are presented showing improved tracking accuracy and friction compensation by NPID Control.
-
New results in NPID Control: tracking, Integral Control, friction compensation and experimental results
Proceedings 1999 IEEE International Conference on Robotics and Automation (Cat. No.99CH36288C), 1999Co-Authors: B. Armstrong, D. Neevel, T. KusikAbstract:NPID (nonlinear PID) Control analysis and design methods are extended to tracking, and to systems with state feedback and Integral Control. Experimental results are presented showing improved tracking accuracy and friction compensation by NPID Control.
Zhong-ping Jiang - One of the best experts on this subject based on the ideXlab platform.
-
Robust nonlinear Integral Control
IEEE Transactions on Automatic Control, 2001Co-Authors: Zhong-ping Jiang, I. MarcelsAbstract:It is well known from linear systems theory that an Integral Control law is needed for asymptotic set-point regulation under parameter perturbations. The note presents a similar result fur a class of nonlinear systems in the presence of an unknown equilibrium due to uncertain nonlinearities and dynamic uncertainties. Both partial state and output feedback cases are considered. Sufficient small-gain type conditions are identified for existence of linear and nonlinear Control laws. A procedure for robust nonlinear Integral Controller design is presented and illustrated via a practical example of fan speed Control.
-
Robust nonlinear Integral Control by partial-state and output feedback
Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 2000Co-Authors: Zhong-ping Jiang, I. MareelsAbstract:It is well-known from linear systems theory that an Integral Control law is needed for asymptotic set-point regulation under parameter perturbations. The paper presents a similar result for a class of nonlinear systems in the presence of an unknown equilibrium due to uncertain nonlinearities and dynamic uncertainties. Both partial-state and output feedback cases are considered. A procedure for robust nonlinear Integral Controller design is presented and illustrated via a practical example of fan speed Control.
I. Marcels - One of the best experts on this subject based on the ideXlab platform.
-
Robust nonlinear Integral Control
IEEE Transactions on Automatic Control, 2001Co-Authors: Zhong-ping Jiang, I. MarcelsAbstract:It is well known from linear systems theory that an Integral Control law is needed for asymptotic set-point regulation under parameter perturbations. The note presents a similar result fur a class of nonlinear systems in the presence of an unknown equilibrium due to uncertain nonlinearities and dynamic uncertainties. Both partial state and output feedback cases are considered. Sufficient small-gain type conditions are identified for existence of linear and nonlinear Control laws. A procedure for robust nonlinear Integral Controller design is presented and illustrated via a practical example of fan speed Control.
D. Czarkowski - One of the best experts on this subject based on the ideXlab platform.
-
Robust stability of Integral Control of PWM dc-dc converters
AIP Conference Proceedings, 2008Co-Authors: D. Czarkowski, L. Rai Pujara, M.k. KazimierczukAbstract:There is a strong demand for power supplies that are operated under switched load conditions. The Integral Control scheme has been chosen recently by the authors to design a pulse‐width modulated (PWM) converter for such applications. This scheme is able to accommodate disturbances to the system as long as the system remains stable. The stability of the closed‐loop system can be adversely affected by the tolerance of the component values. This paper presents an analysis of robust stability of the closed‐loop PWM push‐pull DC–DC converter with an Integral Control using the Kharitonov’s theorem. It is found that the designed system is stable in the specified range of the component values.
-
Application of state feedback with Integral Control to pulse-width modulated push-pull DC-DC convertor
IEE Proceedings - Control Theory and Applications, 1994Co-Authors: D. Czarkowski, M.k. KazimierczukAbstract:The well-known state feedback with Integral Control is applied to the multioperating point pulse-width modulated push-pull DC-DC convertor. A new large-signal circuit model of the power stage is modified so that the load resistance is eliminated from the system matrix. Two closed-loop continuous-conduction mode push-pull convertors are designed using a pole-placement technique: (a) a conventional convertor with a diode rectifier; and (b) a convertor with a small inductor and a bidirectional power flow. The large-signal dynamic performance of these convertors is investigated by simulations in the time domain. It was found that the state feedback with Integral Control in the bidirectional power-flow convertor is suitable for switched-load applications, e.g. radar systems, dot-matrix printers, and power supplies for random-access computer memories.
-
Integral Control of PWM DC-DC buck-derived converters
[Proceedings 1992] The First IEEE Conference on Control Applications, 1992Co-Authors: D. Czarkowski, M.k. KazimierczukAbstract:A concept of Integral Control is applied to multi-operating-point, buck-derived, pulse-width-modulated (PWM) DC-DC converters. A large-signal circuit model of the power stage is introduced, allowing the load resistance to be eliminated from the system matrix. Two closed-loop, continuous-conduction-mode, push-pull converters are designed using the pole-placement technique: a conventional converter and a converter with a small inductor achievable by a bidirectional power flow. The large-signal dynamic performance of these converters is investigated by simulations in the time domain. The bidirectional power flow converter with Integral Control was found to be suitable in switched load applications, e.g., radar systems dot-matrix printers and power supplies for random-access computer memories.
