A hybrid multi-degree-of-freedom vibration isolation platform for spacecrafts by the linear active disturbance rejection control

doi:10.1007/s10483-020-2606-5

Abstract

Abstract: The hybrid vibration isolation, which takes advantages of both the passive and active approaches, has been an important solution for space missions. The objective of this paper is to design a vibration isolation platform for payloads on spacecrafts with the robust, wide bandwidth, and multi-degree-of-freedom (MDOF). The proposed solution is based on a parallel mechanism with six voice-coil motors (VCMs) as the actuators. The linear active disturbance resistance control (LADRC) algorithm is used for the active control. Numerical simulation results show that the vibration isolation platform performs effectively over a wide bandwidth, and the resonance introduced by the passive isolation is eliminated. The system robustness to the uncertainties of the structure is also verified by simulation.

Key words: hybrid vibration isolation, Stewart platform, linear active disturbance rejection control (LADRC), stability, robustness

2010 MSC Number:

70Q05

Weichao CHI, S. J. MA, J. Q. SUN. A hybrid multi-degree-of-freedom vibration isolation platform for spacecrafts by the linear active disturbance rejection control. Applied Mathematics and Mechanics (English Edition), 2020, 41(5): 805-818.

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