Journal ArticleDOI
Adaptive control of plants with unknown hystereses
Gang Tao,Petar V. Kokotovic +1 more
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TLDR
Simulations show that the use of the adaptive hysteresis inverse leads to major improvements of system performance.Abstract:
For a system with hysteresis, the authors present a parameterized hysteresis model and develop a hysteresis inverse. The authors then design adaptive controllers with an adaptive hysteresis inverse for plants with unknown hysteresis. A new adaptive controller structure is introduced which is capable of achieving a linear parameterization and a linear error model in the presence of a hysteresis nonlinearity. A robust adaptive law is used to update the controller parameters and hysteresis inverse parameters, which ensures the global boundedness of the closed-loop signals for a wide class of of hysteresis models. Simulations show that the use of the adaptive hysteresis inverse leads to major improvements of system performance. >read more
Citations
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Journal ArticleDOI
A Survey of Control Issues in Nanopositioning
TL;DR: This paper presents an overview of nanopositioning technologies and devices emphasizing the key role of advanced control techniques in improving precision, accuracy, and speed of operation of these systems.
Journal ArticleDOI
Robust adaptive control of a class of nonlinear systems with unknown backlash-like hysteresis
TL;DR: A robust adaptive control algorithm is developed without constructing a hysteresis inverse, which ensures global stability of the adaptive system and achieves both stabilization and tracking to within a desired precision.
Journal ArticleDOI
Modeling and control of hysteresis in magnetostrictive actuators
Xiaobo Tan,John S. Baras +1 more
TL;DR: A novel dynamic model is proposed for the hysteresis in magnetostrictive actuators by coupling a Preisach operator to an ordinary differential equation, and a parameter identification method is described.
Journal ArticleDOI
Adaptive backstepping control of a class of uncertain nonlinear systems with unknown backlash-like hysteresis
TL;DR: It is shown that the proposed controllers not only can guarantee global stability, but also transient performance, in the class of uncertain dynamic nonlinear systems preceded by unknown backlash-like hysteresis nonlinearities.
Journal ArticleDOI
Modeling, Identification and Compensation of Complex Hysteretic Nonlinearities: A Modified Prandtl-Ishlinskii Approach
TL;DR: This paper describes a new compensator design method for invertible complex hysteretic nonlinearities which is based on the so-called modified Prandtl-Ishlinskii hysteresis operator and is used to generate an inverse feedforward controller for a magnetostrictive actuator.
References
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Journal ArticleDOI
A robust direct adaptive controller
TL;DR: In this paper, the authors proposed a direct adaptive control algorithm which is robust with respect to additive and multiplicative plant unmodeled dynamics, which guarantees boundedness of all signals in the adaptive loop and small residual tracking errors for any bounded initial conditions.
Proceedings ArticleDOI
Adaptive Control of Plants with Unknown Dead-zones
Gang Tao,Petar V. Kokotovic +1 more
TL;DR: Model reference adaptive controllers are designed for plants with unknown dead-zones in which two sets of adjustable parameters, one belonging to a dead-zone inverse and the other to a linear controller, are kept fixed or adaptively updated.
Proceedings ArticleDOI
Adaptive nonlinear control of systems containing a deadzone
TL;DR: In this paper, an adaptive nonlinear controller for a plant containing a nonsmooth nonlinearity with unknown parameters in the span of the control (specifically, a deadzone) is presented.
Journal ArticleDOI
Adaptive control of systems with backlash
Gang Tao,Petar V. Kokotovic +1 more
TL;DR: An adaptive backlash inverse controller for unknown plants with backlash is designed, a parametrization of the error caused by its estimate is given and the global boundedness of the closed-loop signals is proved.
Journal ArticleDOI
The Modeling and Simulation of a Proportional Solenoid Valve
N. D. Vaughan,J. B. Gamble +1 more
TL;DR: In this article, a nonlinear dynamic model of a high speed direct acting solenoid valve is presented, which consists of two subsystems ; a proportional Solenoid and a spool assembly.