Volume 32 Issue 05
May  2006
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Ma Jiming, Fu Yongling, Gao Boet al. EHA controller design based quantitative feedback theory[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(05): 553-557. (in Chinese)
Citation: Ma Jiming, Fu Yongling, Gao Boet al. EHA controller design based quantitative feedback theory[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(05): 553-557. (in Chinese)

EHA controller design based quantitative feedback theory

  • Received Date: 10 May 2005
  • Publish Date: 31 May 2006
  • QFT (quantitative feedback theory) is a robust controller design method. It has good practicability and has been widely used in hydraulic servo control system. After creating the EHA(electrical hydrostatic actuator)’s model, the inner and outer loop controllers were designed based on QFT. Inner loop controlled motor’s rotate speed and ensured that it had good response time. Outer loop controlled the position of flight surface and ensured that it had good robust stability, tracking capability and disturb restraining ability. Design process considered the parameters’ uncertainty of electronic and hydraulic system, and aero load changing under all flight conditions. Performance bounds defining took all the inner and outer loop requirements into account. Simulation results show that this control system has good robust stability and can restrain the output disturbance efficiently, which can fully utilize some strongpoint of integrated EHA like high torque and power density, easiness to maintain and modularize. It can greatly improve the performance of flight control system.

     

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