Please use this identifier to cite or link to this item:
https://doi.org/10.1080/00207721.2012.683834
Title: | Active vibration isolation based on model reference adaptive control | Authors: | Liu, L. Tan, K.K. Guo, Y. Cong, M. Lee, T.H. |
Keywords: | active vibration isolation composite control flexible spacecraft jitter attenuation Stewart platform |
Issue Date: | 1-Feb-2014 | Citation: | 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 | URI: | http://scholarbank.nus.edu.sg/handle/10635/54881 | ISSN: | 00207721 | DOI: | 10.1080/00207721.2012.683834 |
Appears in Collections: | Staff Publications |
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