Flow and Pressure Compound Control Strategy for Missile Hydraulic Erection System

doi:10.3969/j.issn.1000-1093.2018.02.001

Abstract

Abstract: The load of missile erection system is time-varying and an excessive load exists. When the closed or open loop control method is used, the control accuracy is low, and a large hydraulic impact is easily generated in starting-braking process. An independent metering technology is proposed to control the erection process. The inlet and outlet of hydraulic cylinder are controlled by two independently adjustable throttle valves, respectively. The inlet throttle valve is used to control the flow of inlet, and the outlet throttle valve is used to control the pressure of outlet. The flow and pressure controllers are designed based on computational flow feedback and pressure closed loop, respectively. Flow and pressure compound control strategy was achieved. Experiment of the control strategy was accomplished. Through comparison with displacement closed loop, it is shown that the flow and pressure compound control method is used to reduce the hydraulic impact and improve the control precision of erection system. Key

Key words: missile, erection, hydraulicimpact, independentmeteringcontrol, computationalflowfeedback, flowandpressurecompoundcontrolstrategy

CLC Number:

TJ768.2⁺8

FENG Jiang-tao, GAO Qin-he, SHAO Ya-jun, QIAN Wen-xin. Flow and Pressure Compound Control Strategy for Missile Hydraulic Erection System[J]. Acta Armamentarii, 2018, 39(2): 209-216.

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第39卷
第2期2018 年2月兵工学报ACTA
ARMAMENTARIIVol.39No.2Feb.2018

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