Dynamic Modeling and Characteristics Investigation of Jet Deflector Servo Valve

doi:10.3969/j.issn.1000-1093.2018.03.023

Abstract

Abstract: The analytical mathematical models for torque motor, prestage and power stage hydraulic amplifiers are established to investigate the relationship between the internal structure of jet deflector hydraulic amplifier and the dynamic characteristics of servo valve. A simplified calculation method of prestage hydraulic force is presented by analyzing the complex flow of the receiving ports. On this basis, a complete model of jet deflector servo valve is constructed, and the mechanisms of action of jet orifice width, jet disk thickness and nozzle width on the dynamic characteristics of servo valve are presented. For the dynamic drift of the whole valve, the nonlinearity of prestage flow gain and its influence on the dynamic characteristics are presented. The simulated and experimental results show that the proposed model can effectively reproduce the actual dynamic characteristics of servo valve, and the analytical modeling method is reasonable, which provides a theoretical basis for the design and optimization of jet deflector servo valve. Key

Key words: servovalve, prestage, jetdeflector, mathematicalmodel, dynamiccharacteristic

CLC Number:

TH137.52⁺2

WANG Shu-ming, ZUO Zhe-qing, YAN Hao, XU Ling-ling, DONG Li-jing. Dynamic Modeling and Characteristics Investigation of Jet Deflector Servo Valve[J]. Acta Armamentarii, 2018, 39(3): 598-607.

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第39卷
第3期2018 年3月兵工学报ACTA
ARMAMENTARIIVol.39No.3Mar.2018

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