Experimental Study on the Piezoelectric Prestage Driver of Electrohydraulic Servo Valves

CHENG Guang-ming, SHEN Chuan-liang, YANG Zhi-gang

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PDF(132 KB)
Front. Mech. Eng. ›› 2006, Vol. 1 ›› Issue (1) : 56-59. DOI: 10.1007/s11465-005-0017-4

Experimental Study on the Piezoelectric Prestage Driver of Electrohydraulic Servo Valves

  • CHENG Guang-ming, SHEN Chuan-liang, YANG Zhi-gang
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Abstract

A piezoelectric actuated prestage driver of hydraulic servo valves for the low-frequency response of electrohydraulic servo valve electromagnetic prestage driver was presented. The new driver was driven by piezoelectric multilayer actuators. The displacement of a piezoelectric multilayer actuator was amplified by a flexure-hinged amplifier based on the principles of triangle amplification. Static and dynamic characteristics were tested on the model machine. The characteristics of good linearity, high resolution, and high-frequency response were approved. The natural frequency reached 1.201 kHz using finite element analysis, and the practice measurement result was 1 kHz.

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CHENG Guang-ming, SHEN Chuan-liang, YANG Zhi-gang. Experimental Study on the Piezoelectric Prestage Driver of Electrohydraulic Servo Valves. Front. Mech. Eng., 2006, 1(1): 56‒59 https://doi.org/10.1007/s11465-005-0017-4
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