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

作　　者：Weichao CHI S.J.MA J.Q.SUN 

机构地区：[1]College of Science,Northeastern University,Shenyang 100819,China [2]Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines,Northeastern University,Shenyang 100819,China [3]Department of Mechanical Engineering,School of Engineering,University of California,Merced,CA 95343,U.S.A.

出　　处：《Applied Mathematics and Mechanics(English Edition)》2020年第5期805-818,共14页应用数学和力学（英文版）

基　　金：the National Natural Science Foundation of China (No. 11572215);the Fundamental Research Funds for the Central Universities (No. N160503002);the China Scholarship Council。

摘　　要：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.

关 键 词：hybrid vibration isolation Stewart platform linear active disturbance rejection control(LADRC) STABILITY ROBUSTNESS 

分 类 号：O328[理学—一般力学与力学基础]