Composite Control Of Attitude Tracking And Vibration Suppression Of A Rigid-Flexible Coupled System
JOURNAL OF AEROSPACE ENGINEERING(2021)
Abstract
This paper presents a composite control approach that facilitates both stable attitude tracking and vibration suppression of a space flexible slewing truss. An improved proportional-differential (PD) master controller was developed to track the desired slewing trajectory by adopting state feedback methods, which is more stabile than the traditional PD controller; an auxiliary controller based on linear modal observing is proposed to dissipate the vibration energy of the flexible truss. With the improved composite control scheme, the performance of the attitude tracking greatly improved in both response time and convergence character. An adaptive back-stepping controller was designed to guarantee the precision of synchronization precession of dual driving gyro. Simulation results demonstrated the validity of the composite control strategy.
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Key words
Composite control, Attitude tracking, State feedback, Back-stepping technique, Synchronous precession
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