Dynamic Modeling and Control of Flexible Hexapod Platform for Micro-Vibration Isolation and Precision Tracking

Abstract:

Micro vibrations, produced by reaction flywheels, coolers, driving motors and other moving parts in spacecrafts, will result in jitters and performance degradation of sensitive optical payloads, such as laser communication platforms, space telescopes and staring cameras. In this paper, one hexapod platform with flexible ball joints is employed to suppress vibrations and steer the payload in 6-degree-of-freedom (DOF). At first, dynamic modeling of the flexible hexapod platform with two-stage hybrid isolation struts is derived. Then, a composite control strategy is proposed for vibration isolation and precision tracking. Finally, the simulation study is presented to validate the proposed control strategy.

• Periodical: Applied Mechanics and Materials (Volumes 490-491)
• Pages: 412-420
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.490-491.412
• Online since: January 2014
• Authors: Ping Ping Wang, Lei Liu, Qiu Ru Qian
• Keywords: Composite Control, Hexapod Platform, Precision Tracking, Vibration Isolation

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