Narrow-band control experiments in active vibration isolation

John T. Spanos; Zahidul H. Rahman

doi:10.1117/12.188862

4 October 1994 Narrow-band control experiments in active vibration isolation

John T. Spanos, Zahidul H. Rahman

Proceedings Volume 2264, Vibration Monitoring and Control; (1994) https://doi.org/10.1117/12.188862
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

This paper presents experimental results in active vibration isolation using a new version of the adaptive Least Mean Squares control algorithm. The algorithm is implemented digitally as a tracking notch filter in an experiment where the actuator and error sensor are collocated. A pair of all-pass filters are utilized to generate the sine and cosine signals needed by the adaptive filter and troublesome modes of the plant are identified off-line and cancelled by direct inversion. The closed loop system shows two orders of magnitude reduction in force transmissibility over open loop and over a decade of frequencies.

Citation Download Citation

John T. Spanos and Zahidul H. Rahman "Narrow-band control experiments in active vibration isolation", Proc. SPIE 2264, Vibration Monitoring and Control, (4 October 1994); https://doi.org/10.1117/12.188862

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