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- Title
Performance-Constraint Fault Tolerant Control to Aircraft in Presence of Actuator Deviation.
- Authors
Tang, Peng; Zhao, Chuangxin; Liang, Shizhe; Dai, Yuehong
- Abstract
Accuracy of electro-mechanical actuator in aircraft is susceptible to variable operation conditions such as electromagnetic interference, changeable temperature or loss of maintenance, leading in turn to flight performance degradation. This paper proposed an unified control paradigm that aims to keep aircraft's velocity in a safe boundary and shorten the system stabilizing time in presence of actuator deviation. The controller is derived following a practical finite-time-convergence (FTC) with extended dynamics, and an integrated state-constraint structure so as to restrict air vehicle's attitude rate or translation velocity. It is proved that the system state converges to a sphere near the origin in a finite time, the state trajectory is always remain within the prescribed range, and all signals of the closed-loop system are uniformly ultimately bounded. Compared simulation with the quadratic Lyapunov-based FTC method and an asymptotic convergence controller are conducted on an unmanned helicopter prototype. Results show that the proposed controller enhances the dynamic and fault-tolerant performance of resisting actuator fluctuation.
- Subjects
ACTUATORS; ADAPTIVE control systems; ELECTROMAGNETIC interference; CLOSED loop systems; FAULT-tolerant computing; FAULT tolerance (Engineering)
- Publication
Algorithms, 2024, Vol 17, Issue 5, p196
- ISSN
1999-4893
- Publication type
Article
- DOI
10.3390/a17050196