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A Novel Three-Parameter Tuning Method for Seismic Simulation Shaking Table

[+] Author Affiliations
He Mao, Qiangli Luan, Zhangwei Chen

Zhejiang University, Hangzhou, China

Paper No. FPNI2014-7807, pp. V001T05A003; 5 pages
  • 8th FPNI Ph.D Symposium on Fluid Power
  • 8th FPNI Ph.D Symposium on Fluid Power
  • Lappeenranta, Finland, June 11–13, 2014
  • Conference Sponsors: Fluid Power Net International (FPNI), Lappeenranta University of Technology, Finland
  • ISBN: 978-0-7918-4582-0
  • Copyright © 2014 by ASME


Three-parameter control strategy, which incorporates signals of displacement, velocity and acceleration coming from the tested subject, has become a major technology in servo control for seismic simulation shaking table. The three-parameter control strategy allows the system to broaden its response bandwidth and increase its damping property. Normally, trial and error method is used to determine the proper value of each parameter, so the tested system can exhibit favorable frequency response performances. Whereas it can be very labor-intensive to find the optimal parameter values during the parameter trial and error process which also has a certain possibility to fail. To solve this problem, a novel rapid parameter tuning method of three-parameter control strategy has been proposed to consume less time in calculation, but realize the optimal response characteristics at the same time. The servo controller for seismic simulation shaking table is usually made up of three-parameter feedback, feed forward links and signal generator. By deducing the transfer function for each feedback and feed forward link the values of three parameters for the servo controller can be tuned efficiently. Simulation and experiment results have shown the control results of the novel and traditional three-parameter control methods to be virtually identical, proving the feasibility and validity of this novel parameter tuning method proposed in this study. Moreover, this method is proven to have a wide application in different tested system with different vibration characteristics, and it won’t bereave the system of its initial stability.

Copyright © 2014 by ASME
Topics: Simulation



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