Interval sliding mode observer-based fault accommodation for non-minimum phase LPV systems with online control allocation

Abstract

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Fault-Tolerant Control for Systems With Unmatched Actuator Faults and Disturbances

“…Step 1: The smooth virtual control law x * i2 (•) and update lawθ i1 are constructed respectively based on (17) and (18) with (28), and in this new coordinate,…”

“…Using the strategy that reconfiguring the healthy actuators to compensate for the vacancies left by the actuation losses and to reject the effects caused by the undesirable float inputs, the adaptive fault compensation approach is proposed in [14] and most recently developed in [3] and [15]. Also, based on this compensation strategy, sliding mode compensation schemes are proposed in [6] and developed more recently in [7], [16] and [17]. However, in these results, the considered systems are required to have matched actuator redundancy.…”

“…Different from the most recent literature [16] and [17], the unmatched actuator faults and disturbances are considered in this paper. In comparison to [3], this paper deals with a class of nonlinear systems and does not require restrictions on the fault modes of maintaining some properties.…”

Fault accommodation controller under Markovian jump linear systems with asynchronous modes

“…As presented in Figure 1, the closed-loop for system (14), the state feedback control law (15), and the proposed FAC (16) can be compactly written as…”

“…Tariverdi et al 14 provide FTC design implementing adaptive sliding mode control method applied to multiuser telerehabilitation systems. Zhang et al 15 present a solution based on interval sliding mode observer combine with nonminimum phase linear‐parameter‐varying systems. Jiang et al 16 compile several works on fault detection and fault accommodation in the context of switching systems applied to spacecraft.…”