Modeling and Observer-Based Vibration Control of a Flexible Spacecraft With External Disturbances

作者：Yu Liu, Yun Fu, Wei He, Qing Hui · 发表于：IEEE Transactions on Industrial Electronics · 年份：2018 · DOI：10.1109/tie.2018.2884172 · 被引用次数：317 · 研究领域：Adaptive Control of Nonlinear Systems、Dynamics and Control of Mechanical Systems、Control and Dynamics of Mobile Robots

This paper outlines the vibration reduction of a spacecraft with flexible appendage subject to external disturbances. The hybrid dynamic model of the spacecraft is described by both partial differential equations and ordinary differential equations. A vibration control scheme consisting of two boundary control laws and a distributed control law is developed to restrain the spacecraft's vibration and track the desired attitude. An infinite-dimensional disturbance observer is introduced as a feedforward compensator to handle unknown external disturbances. Based on the semigroup theory, the extended LaSalle's invariance principle and Lyapunov analysis, the well-posedness and stabilities of the designed control system are both discussed. Simulation results are given for validating the effectiveness of the developed vibration control scheme.