本文選題：水壓機 + 主分配器　； 參考：《燕山大學》2012年碩士論文

【摘要】：鍛造液壓機是機械制造行業(yè)中的重型機械設備，是衡量一個國家機械制造水平和國防工業(yè)實力的重要標志之一。水壓機作為目前我國大型鍛造設備的重要組成部分，在大型裝備制造領域發(fā)揮著重要的作用，傳統(tǒng)的水壓機水控水驅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，油控水驅動的水壓機的優(yōu)越性日益突出，應用越來越廣泛。針對水壓機電液比例控制系統(tǒng)的非線性、大時變負載干擾及存在較大的參數變化等特點，利用數字仿真技術，對其動靜態(tài)特性展開理論及實驗研究具有重要的理論意義和實際應用價值。 本文以60MN自由鍛造水壓機電液比例控制系統(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，采用機理建模的方法對60MN自由鍛造水壓機電液比例控制系統(tǒng)的關鍵元件包括電液比例閥、液壓動力機構、角位移傳感器等進行了數學建模，并對快鍛過程中主分配器閥芯啟閉產生的液動力情況進行了分析。 第二，采用傳統(tǒng)PID控制理論對電液比例控制系統(tǒng)進行分析校正，使系統(tǒng)具有良好的動態(tài)響應特性，為提高系統(tǒng)的控制精度和對外負載干擾的魯棒性，設計了模型參考自適應控制器，仿真結果表明，，模型參考自適應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驗模擬平臺，對電液比例控缸系統(tǒng)進行實驗研究，對第二步所設計的PID控制器和模型參考自適應控制器進行實驗驗證，實驗結果驗證了電液比例控制系統(tǒng)仿真模型以及模性參考自適應控制策略的有效性。
[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.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH137.7

【引證文獻】

相關碩士學位論文 前3條

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

2 邸紅輕;基于閥杯結構的水壓機進水閥流量—位移非線性補償研究[D];燕山大學;2013年

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

本文編號：2061575