NDLI: Adaptive sliding mode reliable control for switched systems with actuator degradation

Content Provider	IET Digital Library
Author	Liu, Yonghui Niu, Yugang Zou, Yuanyuan Karimi, Hamid Reza
Abstract	The problem of sliding mode control is considered for a class of uncertain switched systems subject to actuator faults. It is assumed that there may happen degradation in each actuator channel. Besides, the authors relax the restrictive assumption that each subsystem shares the same input channel, which is different from some existing works. In this work, a weighted sum approach of the different input matrices is introduced to construct a common sliding surface. Moreover, by on-line estimating the loss of effectiveness of the actuators, an adaptive sliding mode controller is designed. This does not only compensate the effects of the actuator degradation effectively, but can also reduce the conservatism compared with some existing approaches which only utilise the bound of the gain variation. It is shown that the reachability of the specified sliding surface can be ensured, and a sufficient condition on the exponential stability of sliding mode dynamics is obtained via the average dwell time method. Finally, a numerical example is given to demonstrate the effectiveness of the proposed method.
Starting Page	1197
Ending Page	1204
Page Count	8
ISSN	17518644
Volume Number	9
e-ISSN	17518652
Issue Number	Issue 8, May (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/9/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2014.0419
Journal	IET Control Theory & Applications
Publisher Date	2015-04-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Actuator Channel Actuator Degradation Actuator Fault Actuators Adaptive Control Adaptive Sliding Mode Reliable Control Algebra Asymptotic Stability Average Dwell Time Method Combinatorial Mathematics Control System Analysis Control System Synthesis Exponential Stability Gain Variation Input Matrix Matrix Algebra Multivariable Control System Reachability Analysis Self Adjusting Control System Sliding Mode Dynamics Sliding Surface Reachability Stability in Control Theory Sufficient Condition Synthesis Method Time Varying Control System Time Varying System Uncertain Switched System Uncertain System Variable Structure System Weighted Sum Approach
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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