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TECHNICAL PAPERS

DSP Implementation of an Active Bearing Mount for Rotors Using Hybrid Control

[+] Author and Article Information
Mingsian R. Bai, Weibin Luo

Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsin-Chu, Taiwan, Republic of China

J. Vib. Acoust 122(4), 420-428 (Apr 01, 2000) (9 pages) doi:10.1115/1.1287788 History: Received July 01, 1999; Revised April 01, 2000
Copyright © 2000 by ASME
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References

Figures

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MIMO active vibration control system
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Feedforward FXLMS algorithm with synthetic reference
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Hybrid structure with feedback LQG control and feedforward FXLMS control
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Simulation results of feedback LQG control. (a) X-axis time signal of residual vibration after control (transient response); (b) X-axis steady-state power spectra of vibration ( [[ellipsis]] control off,_control on); (c) Y-axis time signal of residual vibration after control (transient response); (d) Y-axis steady-state power spectra of vibration ( [[ellipsis]] control off,_control on).
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Simulation results of feedforward FXLMS control with synthetic reference. (a) X-axis time signal of residual vibration after control (transient response); (b) X-axis steady-state power spectra of vibration ( [[ellipsis]] control off,_ control on); (c) Y-axis time signal of residual vibration after control (transient response); (d) Y-axis steady-state power spectra of vibration ( [[ellipsis]] control off,_control on).
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Simulation results of hybrid control. (a) X-axis time signal of residual vibration after control (transient response); (b) X-axis steady-state power spectra of vibration ( [[ellipsis]] control off,_control on); (c) Y-axis time signal of residual vibration after control (transient response); (d) Y-axis steady-state power spectra of vibration ( [[ellipsis]] control off,_control on).
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Experimental arrangement of the active rotor vibration control system. (a) Schematic of experimental setup; (b) close-up of the mounting of electro-magnetic actuators.
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Frequency response functions of the MIMO system ( [[dashed_line]] measured,_regenerated). (a) Plant from Y actuator to Y actuator; (b) plant from Y actuator to X actuator; (c) plant from X actuator to Y actuator; (d) plant from X actuator to X actuator.
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Experimental results of feedback LQG control. (a) X-axis power spectra of vibration ( [[ellipsis]] control off,_control on); (b) Y-axis power spectra of vibration ( [[ellipsis]] control off,_ control on).
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Experimental results of feedforward FXLMS control with synthetic reference. (a) X-axis power spectra of vibration ([[ellipsis]] control off,_control on); (b) Y-axis power spectra of vibration ([[ellipsis]] control off,_control on).
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Experimental results of hybrid control. (a) X-axis power spectra of vibration ( [[ellipsis]] control off,_control on); (b) Y-axis power spectra of vibration ( [[ellipsis]] control off,_control on).

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