Fault Tolerant Flight Control Using Sliding Modes and Subspace Identification-Based Predictive Control

Bilal A. Siddiqui, Sami El-Ferik, Mohamed Abdelkader

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this work, a cascade structure of a time-scale separated integral sliding mode and model predictive control is proposed as a viable alternative for fault-tolerant control. A multi-variable sliding mode control law is designed as the inner loop of the flight control system. Subspace identification is carried out on the aircraft in closed loop. The identified plant is then used for model predictive controllers in the outer loop. The overall control law demonstrates improved robustness to measurement noise, modeling uncertainties, multiple faults and severe wind turbulence and gusts. In addition, the flight control system employs filters and dead-zone nonlinear elements to reduce chattering and improve handling quality. Simulation results demonstrate the efficiency of the proposed controller using conventional fighter aircraft without control redundancy.
Original languageEnglish (US)
Pages (from-to)124-129
Number of pages6
JournalIFAC-PapersOnLine
Volume49
Issue number9
DOIs
StatePublished - Jul 26 2016

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