本文選題：水壓機(jī) + 主分配器��； 參考：《燕山大學(xué)》2012年碩士論文

【摘要】：鍛造液壓機(jī)是機(jī)械制造行業(yè)中的重型機(jī)械設(shè)備，是衡量一個國家機(jī)械制造水平和國防工業(yè)實(shí)力的重要標(biāo)志之一。水壓機(jī)作為目前我國大型鍛造設(shè)備的重要組成部分，在大型裝備制造領(lǐng)域發(fā)揮著重要的作用，傳統(tǒng)的水壓機(jī)水控水驅(qū)動方式在控制精度和自動化水平上不能滿足要求，在此背景下，油控水驅(qū)動的水壓機(jī)的優(yōu)越性日益突出，應(yīng)用越來越廣泛。針對水壓機(jī)電液比例控制系統(tǒng)的非線性、大時變負(fù)載干擾及存在較大的參數(shù)變化等特點(diǎn)，利用數(shù)字仿真技術(shù)，對其動靜態(tài)特性展開理論及實(shí)驗(yàn)研究具有重要的理論意義和實(shí)際應(yīng)用價值。 本文以60MN自由鍛造水壓機(jī)電液比例控制系統(tǒng)為依托，利用系統(tǒng)仿真軟件MATLAB/Simulink完成了以下幾方面的工作： 第一，采用機(jī)理建模的方法對60MN自由鍛造水壓機(jī)電液比例控制系統(tǒng)的關(guān)鍵元件包括電液比例閥、液壓動力機(jī)構(gòu)、角位移傳感器等進(jìn)行了數(shù)學(xué)建模，并對快鍛過程中主分配器閥芯啟閉產(chǎn)生的液動力情況進(jìn)行了分析。 第二，采用傳統(tǒng)PID控制理論對電液比例控制系統(tǒng)進(jìn)行分析校正，使系統(tǒng)具有良好的動態(tài)響應(yīng)特性，為提高系統(tǒng)的控制精度和對外負(fù)載干擾的魯棒性，設(shè)計了模型參考自適應(yīng)控制器，仿真結(jié)果表明，，模型參考自適應(yīng)控制器具有較好的控制效果，使系統(tǒng)呈現(xiàn)一定的自適應(yīng)性，是一種性能優(yōu)良的控制器。 第三，搭建電液比例閥控缸實(shí)驗(yàn)?zāi)M平臺，對電液比例控缸系統(tǒng)進(jìn)行實(shí)驗(yàn)研究，對第二步所設(shè)計的PID控制器和模型參考自適應(yīng)控制器進(jìn)行實(shí)驗(yàn)驗(yàn)證，實(shí)驗(yàn)結(jié)果驗(yàn)證了電液比例控制系統(tǒng)仿真模型以及模性參考自適應(yīng)控制策略的有效性。
[Abstract]:Forging hydraulic press is the heavy machinery equipment in the machinery manufacturing industry, and it is one of the important symbols to measure a country's mechanical manufacturing level and national defense industry strength. As an important part of large forging equipment in our country, hydraulic press plays an important role in the field of large-scale equipment manufacturing. The traditional water control drive method of hydraulic press can not meet the requirements in control accuracy and automation level. Under this background, the superiority of hydraulic press driven by oil control water is becoming more and more prominent and its application is more and more extensive. Aiming at the characteristics of hydraulic electrohydraulic proportional control system, such as nonlinear, large time-varying load disturbance and large parameter variation, the digital simulation technology is used. The theoretical and experimental research on its dynamic and static characteristics has important theoretical significance and practical application value. Based on the hydraulic electro-hydraulic proportional control system of 60MN free forging, this paper has completed the following work by using the system simulation software MATLAB / Simulink: first, The key components of the hydraulic electro-hydraulic proportional control system for 60MN free forging are modeled by the method of mechanism modeling, including electro-hydraulic proportional valve, hydraulic power mechanism, angle displacement sensor, etc. The hydrodynamic characteristics of the main distributor spool during rapid forging are analyzed. Secondly, the traditional pid control theory is used to analyze and correct the electro-hydraulic proportional control system, which makes the system have good dynamic response characteristics, in order to improve the control accuracy of the system and the robustness of external load disturbance. The model reference adaptive controller is designed. The simulation results show that the model reference adaptive controller has good control effect and makes the system self-adaptive. Thirdly, the experimental simulation platform of electro-hydraulic proportional valve control cylinder is built, and the experimental research on the electro-hydraulic proportional cylinder control system is carried out. The pid controller and the model reference adaptive controller designed in the second step are verified experimentally. The experimental results show that the simulation model of electro-hydraulic proportional control system and the model reference adaptive control strategy are effective.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH137.7

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前3條

1 封波;水壓機(jī)搖桿軸電液伺服系統(tǒng)模糊控制研究[D];燕山大學(xué);2013年

2 邸紅輕;基于閥杯結(jié)構(gòu)的水壓機(jī)進(jìn)水閥流量—位移非線性補(bǔ)償研究[D];燕山大學(xué);2013年

3 陳剛;0.6MN正弦泵控液壓機(jī)蓄能器快鍛子系統(tǒng)研究[D];燕山大學(xué);2013年

本文編號：2061575