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|Title:||Active vibration isolation based on model reference adaptive control|
|Keywords:||active vibration isolation|
|Source:||Liu, L.,Tan, K.K.,Guo, Y.,Cong, M.,Lee, T.H. (2014-02-01). Active vibration isolation based on model reference adaptive control. International Journal of Systems Science 45 (2) : 97-108. ScholarBank@NUS Repository. https://doi.org/10.1080/00207721.2012.683834|
|Abstract:||High-performance instruments are very sensitive to vibrations and jitters. In this article, a new approach towards multi-degree-of-freedom (DOF) active vibration isolation and its application in spacecraft jitter suppression are presented. Model reference adaptive control (MRAC) with acceleration feedback is used to isolate random disturbances. However, a side effect of this algorithm is that displacements at low frequencies are amplified. Thus, the MRAC is augmented with proportional-integral-differential (PID) displacement feedback to suppress vibration displacements. The MRAC-PID composite control is applied to a 4-leg platform to isolate vibrations and suppress tip/tilt jitters. The scheme is also used to isolate 6-DOF vibrations and steer the payload of a flexible spacecraft. Satisfactory performance of vibration isolation and jitter attenuation has been observed. © 2014 Taylor and Francis.|
|Source Title:||International Journal of Systems Science|
|Appears in Collections:||Staff Publications|
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