An adaptive integral sliding mode FTC scheme for dissimilar redundant actuation system of civil aircraft

Salman Ijaz, Fuyang Chen, Mirza Tariq Hamayun, Lin Yan, Cun Shi

Research output: Journal PublicationArticlepeer-review

3 Citations (Scopus)

Abstract

This paper proposed a new adaptive integral sliding mode FTC scheme to deal with the actuator faults and failure. The scheme combines integral sliding mode control, control allocation scheme and adaptive strategy. The unknown actuator faults are handled by adaptive modulation gain of nonlinear ISMC law. To cope with complete failure, control allocation scheme is integrated with the baseline controller to provide tolerance. The proposed strategy relies on the estimate of actuator effectiveness. Therefore, an adaptive sliding mode observer based fault reconstruction scheme is proposed in this paper. The proposed scheme is implemented on dissimilar redundant actuation system driven by hydraulic and electro-hydraulic actuators. In nominal and faulty conditions, both actuators are contributing to achieving the desired control surface deflection. However, when the actuator failure occurs, the control signals are reallocated to the redundant actuator. The problem of dynamics mismatch is addressed using fractional order controller designed in an inner loop. The comparison with the existing literature is also conducted in the simulation to validate the dominant performance.

Original languageEnglish
Pages (from-to)2687-2702
Number of pages16
JournalInternational Journal of Systems Science
Volume50
Issue number14
DOIs
Publication statusPublished - 26 Oct 2019
Externally publishedYes

Keywords

  • Fault tolerant control
  • adaptive integral sliding mode control
  • control allocation
  • dissimilar actuation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Theoretical Computer Science
  • Computer Science Applications

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