摘 要

板形控制系統(tǒng)是獲得高精度板材的重要保證，因此板形控制已成為現(xiàn)代鋼鐵企業(yè)致力深入研究并廣泛采用的技術(shù)，具有高效性和快速性的液壓彎輥系統(tǒng)被廣泛地用來控制板形精度。但目前國內(nèi)對液壓板形控制系統(tǒng)的基礎(chǔ)研究還較少，而且不夠全面，不是難以完全滿足設(shè)計(jì)要求，就是造成設(shè)備能力和資源的浪費(fèi)。為了提高液壓彎輥系統(tǒng)的性能，有必要對其進(jìn)行動(dòng)態(tài)特性分析和仿真，以進(jìn)一步了解整個(gè)系統(tǒng)并對其優(yōu)化。
基于上述思想，本文以某單機(jī)架可逆式冷軋機(jī)板形控制彎輥液壓系統(tǒng)為對象，重點(diǎn)分析了彎輥液壓系統(tǒng)的動(dòng)態(tài)特性和系統(tǒng)的數(shù)字仿真，論文涉及到的主要內(nèi)容有：六輥軋機(jī)液壓彎輥系統(tǒng)的建立，彎輥液壓系統(tǒng)動(dòng)態(tài)特性分析、動(dòng)態(tài)頻域、時(shí)域模型的建立、系統(tǒng)的動(dòng)態(tài)模擬仿真和優(yōu)化，仿真軟件的編制等。論文在充分研究電液伺服壓力（油壓）控制系統(tǒng)的數(shù)學(xué)模型建立方法的基礎(chǔ)上，建立各個(gè)元件的動(dòng)態(tài)方程，將其組成系統(tǒng)整體模型，同時(shí)在建模過程中盡可能考慮一些非線性特性對系統(tǒng)的影響，最終建立系統(tǒng)的頻域及時(shí)域模型。運(yùn)用軟件Matlab的工具箱SIMULINK建立動(dòng)態(tài)結(jié)構(gòu)圖實(shí)現(xiàn)數(shù)學(xué)模型并對其進(jìn)行仿真計(jì)算，得出液壓彎輥系統(tǒng)控制量的仿真曲線，通過改變仿真參數(shù)，對仿真結(jié)果進(jìn)行分析優(yōu)化,并編制動(dòng)態(tài)仿真軟件，能自動(dòng)完成全部參數(shù)設(shè)計(jì)計(jì)算。


關(guān)鍵詞：液壓，彎輥，伺服控制，仿真，軟件















ABSTRACT

Shape control system is an important guarantee for high-precision sheet metal, so it has become modern steel business enterprises to in-depth study and wider use of technology, and with high efficiency and fast roll bending of hydraulic system is widely used to control shape accuracy. However, the current domestic shape control of the hydraulic system of basic research is not only less, but also not comprehensive enough, otherwise, it difficult to fully meet the design requirements and cause a waste of equipment capacity and resources. In order to improve hydraulic bending roll system performance, it is necessary to carry out its dynamic characteristics of analysis and simulation, which to learn more about the whole system and its optimization.
Based on the above ideas in this paper, shape control hydraulic system of a single-reversible cold rolling mill roll bending is researched. Papers related to the main contents are: 6-high mill hydraulic system of bending roll, roll bending Dynamic Analysis of the hydraulic system, frequency and time mathematics model, the dynamic simulation and optimization, the establishment of software and so on. Papers in the full study electro-hydraulic servo pressure (hydraulic) control system means the establishment of a mathematical model, based on the various components of the dynamic equation, its composition system as a whole model, while in the process of modeling as much as possible to consider a number of non-line Of the impact of the system, the eventual establishment of the system in time domain frequency domain model. The use of software Matlab toolbox SIMULINK create a dynamic structure of the mathematical model and achieve their simulation, bending roller hydraulic systems that control of the simulation curve, by changing the parameters of simulation, the simulation results of optimization，and the preparation of dynamic simulation software can automatically calculate all the design parameters.


Key words: hydraulic, bending roll, servo control, simulation, software








目 錄
摘 要 I
ABSTRACT II
1 緒 論 1
1.1 板形控制技術(shù)的發(fā)展 1
1.2 仿真概述 2
1.3 課題學(xué)術(shù)與實(shí)用意義、經(jīng)濟(jì)和社會效益 3
1.4 主要研究內(nèi)容 4
2 液壓彎輥系統(tǒng)總體介紹 2
2.1 液壓彎輥的分類 2
2.1.1 工作輥彎曲方式 2
2.1.2 支撐輥彎曲方式 3
2.2 液壓彎輥控制系統(tǒng) 3
2.2.1 減壓閥控制系統(tǒng) 4
2.2.2 伺服閥控制系統(tǒng) 4
3 六輥可逆冷軋機(jī)液壓彎輥控制系統(tǒng)動(dòng)態(tài)仿真 5
3.1 液壓仿真概述 5
3.2液壓仿真的主要方法 5
3.2.2傳遞函數(shù)法 5
3.2.2狀態(tài)變量法 5
3.2.3功率鍵合圖法 6
3.3系統(tǒng)分析， 6
3.3.1系統(tǒng)總體分析 6
3.3.2系統(tǒng)原理圖分析 7
3.3.3系統(tǒng)簡化 8
3.4 液壓彎輥系統(tǒng)的頻域數(shù)學(xué)模型 9
3.4.1 電控制網(wǎng)絡(luò)模型 10
3.4.3 液壓缸的力平衡方程 10
3.4.4 液壓缸的流量連續(xù)方程 11
3.4.5 壓力傳感器模型 11
3.5 液壓彎輥系統(tǒng)的時(shí)域數(shù)學(xué)模型 12
3.5.1 電控制網(wǎng)絡(luò)模型 12
3.5.2 伺服閥模型 12
3.5.3 液壓缸的力平衡方程 14
3.5.6 加法器的數(shù)學(xué)模型 15
3.6液壓彎輥控制系統(tǒng)仿真參數(shù)的計(jì)算和說明 15
3.6.1伺服閥 16
3.6.2模型簡化說明 16
3.6.3模型簡化說明 16
3.6.4仿真參數(shù)取值 16
3.7 仿真過程 18
3.7.1 仿真軟件的選用 18
3.7.2 數(shù)學(xué)模型在仿真軟件上的實(shí)現(xiàn) 18
3.8 仿真結(jié)果及分析 19
3.8.1 電液伺服閥控制系統(tǒng)的動(dòng)態(tài)性能評定指標(biāo) 19
3.8.2 Bode圖 19
3.8.3 根軌跡圖 20
3.8.4 Nyquist圖 21
3.8.5彎輥油壓差圖 22
3.8.6彎輥位移圖 23
3.8.7彎輥力圖 23
4 液壓彎輥系統(tǒng)動(dòng)態(tài)優(yōu)化 29
4.1 液壓系統(tǒng)優(yōu)化的內(nèi)容 29
4.2 液壓系統(tǒng)動(dòng)態(tài)優(yōu)化 30
4.3 系統(tǒng)主要參數(shù)與其抗干擾能力的關(guān)系 30
4.4 抗粘滑運(yùn)動(dòng)尋優(yōu) 31
5 液壓彎輥動(dòng)態(tài)仿真軟件設(shè)計(jì) 32
5.1 軟件設(shè)計(jì)思想闡述 32
5.2 軟件開發(fā)過程簡介 32
5.3 Matlab與VC++的混合編程 33
5.4 軟件特點(diǎn)及功能界面展示 34
5.4.1 軟件特點(diǎn)說明 34
5.4.2 部分功能界面介紹 34
6 結(jié)論 35
參 考..