The Experts below are selected from a list of 213 Experts worldwide ranked by ideXlab platform
Anton A. Stoorvogel - One of the best experts on this subject based on the ideXlab platform.
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H2 optimal controllers with measurement feedback for continuous-time systems-Flexibility in closed-Loop Pole placement
Automatica, 1996Co-Authors: Ali Saberi, Peddapullaiah Sannuti, Anton A. StoorvogelAbstract:For a general H"2 optimal control problem, at first all H"2 optimal measurement feedback controllers are characterized and parameterized, and then attention is focused on controllers with observer-based architecture. Both full-order as well as reduced-order observer-based H"2 optimal controllers are characterized and parameterized. Also, systematic methods of designing them are presented. An important problem, coined as an H"2 optimal control problem with simultaneous Pole placement, is formulated and solved. That is, since in general there exist many H"2 optimal measurement feedback controllers, utilizing such flexibility and freedom, we can solve the problem of simultaneously placing the closed-Loop Poles at desirable locations whenever possible while still preserving H"2 optimality. All the design algorithms developed here are easily computer implementable.
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$H_2$ optimal controllers with measurement feedback for discrete-time systems : flexibility in closed-Loop Pole placement
1996Co-Authors: Ali Saberi, Peddapullaiah Sannuti, Anton A. StoorvogelAbstract:For a general H2 optimal control problem, at first all H2 optimal measurement feedback controllers are characterized and parameterized, and then attention is focused on controllers with estimator based architecture. The H2 optimal control problem with strictly proper controllers and the H2 optimal control problem with proper controllers are essentially different and hence clearly delineated. Next, estimator based H2 optimal controllers are characterized and parameterized. Also, systematic methods of designing them are presented. Three different estimator structures, prediction, current, and reduced order estimators, are considered. Since in general there exist many H2 optimal measurement feedback controllers, utilizing such flexibility and freedom, one can place the closed Loop Poles at more desirable locations while still preserving H2 optimality. All the design algorithms developed here are easily computer implementable. Key words: H2 Optimal Control, Multivariable Control, Discrete Time Systems.
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H/sub 2/ optimal controllers with measurement feedback for continuous-time systems - flexibility in closed-Loop Pole placement
Proceedings of 35th IEEE Conference on Decision and Control, 1Co-Authors: Ali Saberi, Peddapullaiah Sannuti, Anton A. StoorvogelAbstract:For a general H/sub 2/ optimal control problem, at first all H/sub 2/ optimal measurement feedback controllers are characterized and parameterized, and then attention is focused on controllers with observer based architecture. An important problem that can be coined as an H/sub 2/ optimal control problem with simultaneous Pole placement, is formulated and solved. That is, since in general there exist many H/sub 2/ optimal measurement feedback controllers, utilizing such flexibility and freedom, we can solve the problem of simultaneously placing the closed-Loop Poles at desirable locations whenever possible while still preserving H/sub 2/ optimality. We discuss here only full order observer based controllers. The discussion of reduced order observer based controllers follows along the same lines.
Y Sumino - One of the best experts on this subject based on the ideXlab platform.
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estimate of 4 Loop Pole ms mass relation from static qcd potential
Physics Letters B, 2014Co-Authors: Y SuminoAbstract:Abstract We estimate the presently unknown constant in the 4-Loop relation between the quark Pole mass and the MS ¯ mass, by requiring stability of the perturbative prediction for E tot ( r ) = 2 m Pole + V QCD ( r ) in the intermediate-distance region. The estimate is fairly sharp due to a severe cancellation between 2 m Pole and V QCD ( r ) . This would provide a test, based on general properties of the gauge theory, for the size of ultra-soft contributions to V QCD ( r ) .
Ali Saberi - One of the best experts on this subject based on the ideXlab platform.
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H2 optimal controllers with measurement feedback for continuous-time systems-Flexibility in closed-Loop Pole placement
Automatica, 1996Co-Authors: Ali Saberi, Peddapullaiah Sannuti, Anton A. StoorvogelAbstract:For a general H"2 optimal control problem, at first all H"2 optimal measurement feedback controllers are characterized and parameterized, and then attention is focused on controllers with observer-based architecture. Both full-order as well as reduced-order observer-based H"2 optimal controllers are characterized and parameterized. Also, systematic methods of designing them are presented. An important problem, coined as an H"2 optimal control problem with simultaneous Pole placement, is formulated and solved. That is, since in general there exist many H"2 optimal measurement feedback controllers, utilizing such flexibility and freedom, we can solve the problem of simultaneously placing the closed-Loop Poles at desirable locations whenever possible while still preserving H"2 optimality. All the design algorithms developed here are easily computer implementable.
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$H_2$ optimal controllers with measurement feedback for discrete-time systems : flexibility in closed-Loop Pole placement
1996Co-Authors: Ali Saberi, Peddapullaiah Sannuti, Anton A. StoorvogelAbstract:For a general H2 optimal control problem, at first all H2 optimal measurement feedback controllers are characterized and parameterized, and then attention is focused on controllers with estimator based architecture. The H2 optimal control problem with strictly proper controllers and the H2 optimal control problem with proper controllers are essentially different and hence clearly delineated. Next, estimator based H2 optimal controllers are characterized and parameterized. Also, systematic methods of designing them are presented. Three different estimator structures, prediction, current, and reduced order estimators, are considered. Since in general there exist many H2 optimal measurement feedback controllers, utilizing such flexibility and freedom, one can place the closed Loop Poles at more desirable locations while still preserving H2 optimality. All the design algorithms developed here are easily computer implementable. Key words: H2 Optimal Control, Multivariable Control, Discrete Time Systems.
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H/sub 2/ optimal controllers with measurement feedback for continuous-time systems - flexibility in closed-Loop Pole placement
Proceedings of 35th IEEE Conference on Decision and Control, 1Co-Authors: Ali Saberi, Peddapullaiah Sannuti, Anton A. StoorvogelAbstract:For a general H/sub 2/ optimal control problem, at first all H/sub 2/ optimal measurement feedback controllers are characterized and parameterized, and then attention is focused on controllers with observer based architecture. An important problem that can be coined as an H/sub 2/ optimal control problem with simultaneous Pole placement, is formulated and solved. That is, since in general there exist many H/sub 2/ optimal measurement feedback controllers, utilizing such flexibility and freedom, we can solve the problem of simultaneously placing the closed-Loop Poles at desirable locations whenever possible while still preserving H/sub 2/ optimality. We discuss here only full order observer based controllers. The discussion of reduced order observer based controllers follows along the same lines.
Jian Xiong - One of the best experts on this subject based on the ideXlab platform.
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active power decoupling for high power single phase pwm rectifiers
IEEE Transactions on Power Electronics, 2013Co-Authors: Hongbo Li, Kai Zhang, Hui Zhao, Shengfang Fan, Jian XiongAbstract:Single-phase pulsewidth modulation rectifiers suffer from ripple power pulsating at twice the line frequency. The ripple power is usually filtered by a bulky capacitor bank or an LC branch, resulting in lower power density. The alternative way is active power decoupling, which uses an active circuit to direct the pulsating power into another energy-storage component. The main dc-link filter capacitor can, therefore, be reduced substantially. This paper proposed a new scheme of active power decoupling. The circuit consists of a third leg, an energy-storage capacitor and a smoothing inductor. The topology combined the advantages of high energy-storage efficiency and low requirement on control bandwidth. Both the pulsating power from the ac source and the reactive power of the smoothing inductors are taken into consideration when deriving the power decoupling scheme. The active power filter's (APF) capacitor voltage control system consists of inner Loop Pole-placement control and outer Loop proportional-resonant control. To enhance the steady-state performance, the capacitor voltage reference is modified in a closed-Loop manner. Simulation and experimental results show that the proposed APF scheme has good power decoupling performance and is more suited for high-power applications where switching frequency is limited.
H.k. Way - One of the best experts on this subject based on the ideXlab platform.
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Placing all closed Loop Poles of missile attitude control systems in the sliding mode via the root locus technique.
ISA transactions, 2001Co-Authors: Y.j. Huang, H.k. WayAbstract:This paper presents a robust control method for uncertain nonminimum phase systems with external disturbances. A systematic design algorithm is developed which links the sliding mode control and the root locus technique. Complete closed-Loop Pole placement is achieved in addition to the placement of the reduced order equivalent system Poles. An integration function is employed in the sliding variable formulation. The output tracking error is guaranteed to vanish. The proposed method was successfully applied to control the angle of attack of a missile attitude control system.
