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Research Papers

Fault-Tolerant Control for Linear Time-Variant Impulsive Singular Systems Subject to Actuator Saturation and L Disturbances

[+] Author and Article Information
Mahmood Khatibi

Advanced Control Systems Lab,
Electrical Engineering Department,
Sharif University of Technology,
Tehran 11155-4363, Iran

Mohammad Haeri

Advanced Control Systems Lab,
Electrical Engineering Department,
Sharif University of Technology,
Tehran 11155-4363, Iran
e-mail: haeri@sina.sharif.edu

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received October 7, 2016; final manuscript received May 12, 2017; published online August 8, 2017. Assoc. Editor: Shankar Coimbatore Subramanian.

J. Dyn. Sys., Meas., Control 139(11), 111009 (Aug 08, 2017) (7 pages) Paper No: DS-16-1489; doi: 10.1115/1.4036880 History: Received October 07, 2016; Revised May 12, 2017

This paper explores the fault-tolerant control problem for uncertain impulsive singular linear time-variant (LTV) systems in the presence of bounded-power or L disturbances. Here, a saturation avoidance mechanism is employed to prevent faulty actuators from overloading. Also, the conflict between attenuating the effect of L disturbances and enlarging the domain of attraction is tackled by proposing a nonconstant state feedback controller. In addition, the proposed method is capable of tolerating time-varying faults. The suggested method is implemented on a mechanical viscoelastic model of cortical bone with impulsive and time-varying nature to evaluate its competency.

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Figures

Grahic Jump Location
Fig. 1

A mechanical viscoelastic model of cortical bone

Grahic Jump Location
Fig. 2

The projection of domains of attraction in ℝ2 along with the state trajectory (hollow triangles)

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