Active Vibration Isolation Via Nonlinear Velocity Time-Delayed Feedback  

Oleh:

Xue, Gao ; Qian, Chen

Jenis: Article from Books - E-Book
Dalam koleksi: Transactions on Engineering Technologies: Special Volume of the World Congress on Engineering 2013, page 73-86.
Topik: Active control; Cubic velocity feedback; Local stability; Piecewise bilinear; Stability boundary; Time delay; Vibration isolation
Fulltext: 06_978-94-017-8831-1_Gao_Chen.pdf (802.16KB)

Isi artikel

This paper combines cubic nonlinearity and time delay to improve the performance of vibration isolation. By the multi-scale perturbation method, the average autonomous equations are first found to analyse local stability. Then with the purpose of obtaining the desirable vibration isolation performance, stability conditions are obtained to find appropriate the feedback parameters including gain and time delay. Last, the influence of the feedback parameters on vibration transmissibility is assessed. Results show that the strategy developed in this paper is practicable and feedback parameters are significant factors to alter dynamics behaviours, and more importantly, to improve the isolation effectiveness for the bilinear isolation system.

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