發(fā)布時(shí)間：2018-06-18 09:07

  本文選題：電液伺服閥 + 三維流場�。� 參考：《西安電子科技大學(xué)》2011年碩士論文

【摘要】：電液伺服閥是電液伺服控制系統(tǒng)的核心部件。由于電液伺服閥在電液伺服控制系統(tǒng)中發(fā)揮著重要的作用,因此閥的性能仿真分析對于保證其性能指標(biāo)和電液伺服控制系統(tǒng)良好的穩(wěn)定性能和快速性具有重要的意義。 建立了雙噴嘴擋板式電液伺服閥的噴嘴擋板的三維流場簡化模型并進(jìn)行數(shù)值仿真。研究了噴嘴擋板的靜態(tài)特性,獲得了噴嘴擋板在不同的進(jìn)口壓力、不同的擋板間隙時(shí)的流場分布特性,為雙噴嘴擋板式電液伺服閥的結(jié)構(gòu)設(shè)計(jì)與優(yōu)化提供了參考依據(jù)。 建立了射流管式電液伺服閥的射流管放大器的三維流場簡化模型并進(jìn)行數(shù)值仿真。研究了射流管放大器的靜態(tài)特性,獲得了射流管在不同接收距離時(shí)的零位接收壓力和在不同偏離位移時(shí)的恢復(fù)壓力特性,通過數(shù)學(xué)擬合方法獲得了恢復(fù)壓力函數(shù),為射流管放大器的優(yōu)化設(shè)計(jì)和構(gòu)建射流管電液伺服閥整體數(shù)學(xué)模型提供了參考依據(jù)。 建立了雙噴嘴擋板式電液伺服閥的整體仿真模型并進(jìn)行動(dòng)態(tài)特性仿真。研究了雙噴嘴擋板式電液伺服閥的建模方法,并通過仿真獲得了壓力特性曲線、流量特性曲線、泄漏特性曲線以及階躍響應(yīng)曲線,為液壓控制系統(tǒng)的建模與優(yōu)化設(shè)計(jì)奠定了基礎(chǔ)。
[Abstract]:Electric-hydraulic servo valve is the core component of electro-hydraulic servo control system. Because the electro-hydraulic servo valve plays an important role in the electro-hydraulic servo control system, the simulation analysis of the valve performance is of great significance to ensure its performance index and the good stability and rapidity of the electro-hydraulic servo control system. A simplified three-dimensional flow field model of double nozzle baffle type electro-hydraulic servo valve was established and numerical simulation was carried out. The static characteristics of the nozzle baffle are studied, and the flow field distribution characteristics of the nozzle baffle under different inlet pressure and different baffle clearance are obtained, which provides a reference for the structural design and optimization of the double-nozzle baffle electro-hydraulic servo valve. A simplified three-dimensional flow field model of a jet tube amplifier with an electro-hydraulic servo valve is established and its numerical simulation is carried out. The static characteristics of the jet tube amplifier are studied. The zero receiving pressure of the jet tube at different receiving distance and the recovery pressure characteristic when the jet tube deviates from the displacement are obtained. The recovery pressure function is obtained by mathematical fitting method. It provides a reference for the optimization design of the jet tube amplifier and the construction of the integral mathematical model of the jet tube electro-hydraulic servo valve. The whole simulation model of double nozzle baffle electro-hydraulic servo valve is established and the dynamic characteristics are simulated. The modeling method of double nozzle baffle electro-hydraulic servo valve is studied, and the pressure characteristic curve, flow characteristic curve, leakage characteristic curve and step response curve are obtained by simulation. It lays a foundation for the modeling and optimization design of hydraulic control system.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH137.52

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 張?jiān)讫?盾構(gòu)掘進(jìn)機(jī)液壓推進(jìn)系統(tǒng)控制及仿真分析[D];華東理工大學(xué);2013年

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本文編號(hào)：2034949