Affiliation:
1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China e-mail:
Abstract
For deep space probe subject to uncertain time-varying inertia matrix, unknown external disturbances, actuator faults, and misalignment, a fault-tolerant attitude controller is designed in this paper, which is based on adaptive control and fast terminal sliding mode control (FTSMC) theories. A new method to handle actuator uncertainties is developed, which redefines the effectiveness matrix and the misalignment matrix. Moreover, an explicit sufficient condition is presented in order to construct the fault-tolerant attitude controller. The proposed controller can stabilize the attitude control system with a fast convergence rate and high precision. Simulations results demonstrate the superior performance of the proposed controller.
Funder
National Natural Science Foundation of China
Aeronautical Science Foundation of China
Subject
Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering
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