Robust adaptive failure compensation of hysteretic actuators for parametric strict feedback systems

Cai, Jianping; Chen, Wen; Su, Hongye; Liu, Zhitao; Liu, Xiangbin

doi:10.1109/cdc.2011.6160674

Cited by 16 publications

(30 citation statements)

References 19 publications

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“…• Unlike existing results about adaptive control for uncertain nonlinear systems in [8,11,[13][14][15] and [25,26], the a priori knowledge about the sign of b is no longer needed in the adaptive controller design, although sign(b) is appeared in the stability analysis (23).…”

Section: Remarkmentioning

confidence: 99%

“…Some common properties of practical actuators, such as unknown nonlinearities [1][2][3], actuator uncertainties [4], unknown failures [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21], utility decrements caused by actuator aging [22,23], etc, have great effects on the performance of control systems. The problem of actuator failure obtains much attention in the field of control theory.…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, it can also handle system parametric uncertainties. For these reasons, in the context of unknown failure compensation, many schemes based on adaptive approaches have been proposed (see, for example, [7][8][9][10][11][12][13][14][15][16][17] and [19,20]). Initially, adaptive control scheme was proposed to handle unknown actuator failures only for linear systems.…”

Section: Introductionmentioning

confidence: 99%

“…In [11], an adaptive control scheme base on prescribed performance bound was proposed to guarantee transient performance of closed loop systems with unknown failures. In [13][14][15], the problem of how to compensate for unknown failures of hysteretic actuators was discussed, while some results about the issue of infinite number of actuator failures can be found in [17] and [18]. Note that adaptive backstepping technology has been often used to design controller compensating for such failure systems (see, for example, [7][8][9][10][11][12][13][14][15] and [17][18][19][20]).…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we aim to address such a problem by considering a class of nonlinear systems with unknown parameters. Different from [7][8][9][10][11][12][13][14][15][16][17], the unknown failures of actuators with utility decrements is modeled into a linear parametric function with synthetical time-varying gain i i (t), as shown in (2). Therefore, the traditional method cannot be used in the controller design and stability analyses.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Adaptive Failure Compensation for Uncertain Systems with Unknown Utility Decrement of Actuators

Cai

Zhang

Xing

et al. 2017

Asian Journal of Control

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Utility decrement caused by actuator aging and unknown failures of actuators is inevitable in practice. However, there is still no result available to compensate for instantaneous failures of actuators with unknown utility decrement. This paper aims at addressing this problem by considering a class of strict‐feedback nonlinear systems. The controller obtained by our proposed control scheme can be divided into two parts. The first one aims to handle the effects of unknown utility decrement, while the second one makes efforts to compensate for the uncertainties caused by unknown failures. Compared with the existing results, the proposed controller is able to compensate not only the uncertainties caused by unknown instantaneous failures but also the time‐varying utility decrement effect of actuators. Moreover, it does not require the prior knowledge about the sign of the constant control gain. In addition, the pre‐estimation functions of time‐varying gain based on the priori knowledge of utility decrements are fully used to improve the performance of the closed‐loop systems. It is shown that the proposed controller can guarantee the boundedness of all closed‐loop signals.

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Section: Remarkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Adaptive Failure Compensation for Uncertain Systems with Unknown Utility Decrement of Actuators

Cai

Zhang

Xing

et al. 2017

Asian Journal of Control

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Neural network adaptive control for turbo‐generator of power systems with prescribed performance and unknown asymmetric actuator dead zone

Tian,

Zhang,

Zhou

et al. 2024

Asian Journal of Control

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This paper investigates a neural network adaptive controller design method for turbo‐generator of power systems with external disturbance, unknown system dynamic, prescribed performance, and unknown actuator dead zone. First, the unknown system dynamic is estimated and overcome through a neural network. Using the implicit function theorem, the unknown asymmetric dead‐zone behavior of the actuator is overcome by another static neural network. Second, the external disturbance and the reconstruction error of neural networks are handled by a robust term updated online. Moreover, there is no requirement to pre‐know or off‐line estimate the reconstruction error of neural networks and the upper bound of the system external disturbance. Third, based on Lyapunov theory, the smooth control law is proposed. In the meantime, the uniform ultimate boundedness of the networks weights is strictly proved. Furthermore, the system state error satisfies the prescribed transient performance and can converge to a small neighborhood around zero. Finally, a numerical simulation shows the effectiveness of the proposed method.

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Adaptive inverse control for parametric strict feedback systems with unknown failures of hysteretic actuators

Cai

Chen

2013

Intl J Robust & Nonlinear

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An adaptive compensation control scheme is proposed by using backstepping techniques for a class of uncertain nonlinear systems preceded by m hysteretic actuators, which exhibit unknown backlash nonlinearity and possibly experience unknown failures. An estimated smooth inverse of the actuator backlash is utilized in the controller design to compensate for the effects of the backlash and actuator failures. It is shown that the designed controllers can ensure all signals of closed-loop system bounded for any failure pattern of hysteretic actuators and tracking performance is also maintained. Simulation studies confirm the effectiveness of the proposed controller, especially the improvement of system performances.

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Robust adaptive failure compensation of hysteretic actuators for parametric strict feedback systems

Cited by 16 publications

References 19 publications

Adaptive Failure Compensation for Uncertain Systems with Unknown Utility Decrement of Actuators

Adaptive Failure Compensation for Uncertain Systems with Unknown Utility Decrement of Actuators

Neural network adaptive control for turbo‐generator of power systems with prescribed performance and unknown asymmetric actuator dead zone

Adaptive inverse control for parametric strict feedback systems with unknown failures of hysteretic actuators

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