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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2013, Vol. 14 Issue (4): 281-291    DOI: 10.1631/jzus.A1200278
Mechanical Engineering and Mechanics     
Track-position and vibration control simulation for strut of the Stewart platform
Zhao-dong Xu, Chen-hui Weng
MOE Key Laboratory of C&PC Structures, Southeast University, Nanjing 210096, China; Guangzhou Design Institute, Guangzhou 510630, China
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Abstract  Vibrations inherently generated by on-board disturbance sources degrade the performance of the instruments in an on-orbit spacecraft, which have stringent accuracy requirements. The Stewart platform enables both track-positioning and vibration control. The strut of the Stewart platform is designed as a piezoelectric (PZT) element in series with a voice coil motor (VCM) element and a viscoelastic element. The track-positioning system uses a VCM as the main positioning control driver and a PZT as the positioning compensator. The vibration control system uses the characteristics of struts including active and passive control elements to attenuate the vibration. Simulation results indicate that the Stewart platform with the designed struts has good performance in tracking and vibration attenuation with different interference waves.

Key words： Stewart platform      Track-positioning control      Vibration control     
Received: 26 October 2012      Published: 03 April 2013
CLC:  V11  
  O328  
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Zhao-dong Xu
Chen-hui Weng
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Zhao-dong Xu, Chen-hui Weng. Track-position and vibration control simulation for strut of the Stewart platform. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2013, 14(4): 281-291.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1200278     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2013/V14/I4/281

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