Study on Compensation Strategy to Eliminate Extraneous Force in Electro-Hydraulic Load Simulator

Abstract:

Extraneous force is the main factor impacting the precision and dynamic characteristic of the electro-hydraulic load simulator. The structure and mathematical model of simulator is analyzed . then the improved compensation method based on the structure invariable principle is proposed to eliminate the extraneous force. The method use the velocity signal of the rudder servo system as the feed-forward compensation signal .and the speed signal is reproduced by integrating the given position signal of the rudder servo system. Then use the least square procedure for on-line identification to get tuning phase of the compensation signal. The experimental result show that improved compensation method is efficient obviously.

• Periodical: Applied Mechanics and Materials (Volumes 433-435)
• Pages: 1969-1974
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.433-435.1969
• Online since: October 2013
• Authors: Sha Zhao*, Jin Ying Zhang, Chang Chun Li, Meng Sun
• Keywords: Compensation Signal, Electro-Hydraulic Load Simulator, Extraneous Force, Tuning Phase

References

[1] Geqiang Li, Jian Cao, Biao Zhang and Keding Zhao. Design of Robust Controller in Electrohydraulic Load Simulator. 5th International Conference on Machine Learning and Cybernetics, Dalian, 2006, pp.779-784.

DOI: 10.1109/icmlc.2006.258453

[2] HONG Y U. Nonlinear control for a class of hydraulic servo system. Journal of Zhejiang University Science, 2004, 5(11): pp.1413-1417.

[3] Liu Xiaodong, Li Changchun, Zhou Xin and Meng Yadong. Synchronization Control Study for Two Cylinders Electro-hydraulic Grasping System. Mechatronics and Automation, 2007. ICMA 2007. International Conference on, pp.2991-2996.

DOI: 10.1109/icma.2007.4303797

[4] Hongren Li. Hydraulic control system[M]. pp.72-75. Beijing: National Defence Industry Press, 1990. (in Chinese).

[5] YUAN Rui-bo, ZHAO Ke-ding and LI Ge-qing. Analysis and Study on Uncertainty for Torque Control Servo System of Electrohydraulic Load Simulator. Machine Tool &Hydraulics. Vol. 2, 2006. pp.159-162. (in Chinese).

[6] Ayalew.Y. J and Jablokow K.W. Partial Feedback Linearising Force-tracking Control: Implementation and Testing in Electrohydraulic actuation. Control Theory &Application, IET. Vol. 1, no. 3, pp.689-698, May (2007).

DOI: 10.1049/iet-cta:20060186

[7] SHAO Jun-peng, LI Jian-ying, WANG Zhong-wen and HAN Gui-hua. Structure Compensation Control of Eliminating Superfluous Force of Electrohydraulic Load Simulator. Electric Machine And Control. Vol. 13, 2009. pp.586-591. (in Chinese).

DOI: 10.1109/icicisys.2009.5358308

[8] WANG Cheng-wen, JIAO Zong-xia and Luo Cai-jin. An Improved Velocity Synchronization Control on Electro-hydraulic Load Simulator. Acta Aeronautica ET Aeronautica Sinica. Vol. 33, 2012. pp.1717-1725. (in Chinese).

[9] Sachdev M. S. and Grray M .P. A. Least Error Sequares Technique for Determining Power System Frequency，IEEE Trans. Power App Syst. Vol. PAS-104, Feb. 1985. pp.437-443.

DOI: 10.1109/tpas.1985.319059