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Volume 41 Issue 1
Jan.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(1): 124-132.
HAN Songshan, JIAO Zongxia, SHANG Yaoxing, et al. Synchronizing compensation control of electro-hydraulic load simulator using command signal of actuator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(1): 124-132. doi: 10.13700/j.bh.1001-5965.2014.0052(in Chinese)
Citation: HAN Songshan, JIAO Zongxia, SHANG Yaoxing, et al. Synchronizing compensation control of electro-hydraulic load simulator using command signal of actuator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(1): 124-132. doi: 10.13700/j.bh.1001-5965.2014.0052(in Chinese)
shu

Synchronizing compensation control of electro-hydraulic load simulator using command signal of actuator

doi: 10.13700/j.bh.1001-5965.2014.0052
  • 1.

    School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • 2. Science and Technology on Aircraft Control Laboratory, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 27 Jan 2014
  • Publish Date: 20 Jan 2015
    Abstract
  • Electro-hydraulic load simulator is a typical case of the force (torque) servo system which is strongly coupled with a hydraulic position system. How to eliminate the extraneous torque from motion disturbances is the key difficulty in electro-hydraulic load simulators. Based on theoretical analysis of traditional synchronizing compensation controllers, the improved synchronizing compensation algorithm was put forward. This algorithm can make full use of actuator's velocity command signal and load simulator's torque feedback signal, which does not need actuator's velocity signal, acceleration signal and servo-valve current signal. Due to utilizing load simulator's torque feedback signal, it can effectively eliminate the extraneous torque and achieve a more accurate synchronizing compensation than traditional velocity synchronizing controller in big gradient loading conditions. The comparison results based on simulations and experiments show that this algorithm is more effective to eliminate extraneous torque from motion disturbances and improve the dynamic torque tracking accuracy in various typical operating conditions.

     

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