Title: Application of ISIC control for extraneous force compensation in the electrohydraulic load simulator

Authors: Meng Sun, Chang-chun Li, Xiao-dong Liu, Jin-ying Zhang

Addresses: School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China. ' School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China. ' School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China. ' School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China

Abstract: The electrohydraulic load simulator is a kind of typical passive force servo system. The large extraneous force caused by strong disturbance of the rudder displacement affects the static and dynamic performances of loading system seriously. According to electrohydraulic servo load simulator, improved structure invariance compensation (ISIC) is presented to correct phasic lag of estimative velocity. Moreover, based on Fourier series, corrected velocity is extended to different frequency points and tracking control of multi-frequency signal is realised. The real loading experiment results indicate that ISIC control method could compensate extraneous force effectively.

Keywords: electrohydraulic load simulator; Fourier series; ISIC control; extraneous force compensation; rudder displacement; improved structure invariance compensation; vehicle rudders; passive force control; flight vehicles.

DOI: 10.1504/IJCAT.2011.042245

International Journal of Computer Applications in Technology, 2011 Vol.41 No.1/2, pp.143 - 149

Available online: 01 Sep 2011 *

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