本文選題：2D換向(節(jié)流)閥　切入點(diǎn)：穩(wěn)定性分析　出處：《浙江工業(yè)大學(xué)》2012年碩士論文

【摘要】：電液比例閥是電液比例控制技術(shù)的核心控制元件,它介于閉環(huán)伺服閥與常規(guī)開關(guān)閥之間,已成為現(xiàn)今液壓系統(tǒng)的常用組件,有著極大的工程應(yīng)用前景。電液比例換向(節(jié)流)閥是其中的一種,可以控制液流的流向和大小。本論文研究了一種利用閥芯雙運(yùn)動(dòng)自由度實(shí)現(xiàn)的導(dǎo)控型電液比例換向(節(jié)流)閥,本論文稱之為：2D電液比例換向(節(jié)流)閥。 2D電液比例換向(節(jié)流)閥由2D換向(節(jié)流)閥、壓-扭聯(lián)軸器和比例電磁鐵三部分組成。本論文的創(chuàng)新點(diǎn)在于利用壓-扭聯(lián)軸器將比例電磁鐵的直線位移轉(zhuǎn)化成2D換向(節(jié)流)閥閥芯的旋轉(zhuǎn)運(yùn)動(dòng),進(jìn)而推動(dòng)閥芯滑動(dòng),實(shí)現(xiàn)電液比例換向(節(jié)流)閥的功能。它具有導(dǎo)控結(jié)構(gòu)簡單、控制精度高、單級(jí)流量大等優(yōu)點(diǎn)。 本論文主要對(duì)2D電液比例換向(節(jié)流)閥進(jìn)行原理性研究,各章分述如下： 第一章介紹了論文研究背景和電液比例閥的特點(diǎn),簡述了比例電磁鐵和各類電液比例閥的國內(nèi)外研究現(xiàn)狀,概括了論文的選題意義和主要研究內(nèi)容。 第二章介紹了2D伺服閥,藉此提出了2D電液比例換向(節(jié)流)閥并分析了結(jié)構(gòu)和原理,提出了多種導(dǎo)控方案,設(shè)計(jì)了三通2D電液比例換向(節(jié)流)閥。 第三章針對(duì)2D換向(節(jié)流)閥導(dǎo)控級(jí)建立數(shù)學(xué)模型,隨后進(jìn)行穩(wěn)定性分析,建立穩(wěn)定條件,然后進(jìn)行動(dòng)態(tài)仿真,分析了幾個(gè)主要參數(shù)對(duì)導(dǎo)控級(jí)的動(dòng)態(tài)特性的影響。 第四章設(shè)計(jì)壓-扭聯(lián)軸器及其簧片的結(jié)構(gòu),并分析其原理,然后對(duì)壓-扭聯(lián)軸器模型進(jìn)行數(shù)學(xué)建模,解析簧片變形并且與ANASYS仿真的數(shù)值結(jié)果進(jìn)行比較,驗(yàn)證了數(shù)學(xué)建模的可靠性。 第五章闡述了簧片式壓-扭聯(lián)軸器及其簧片的材料選擇和加工,介紹了實(shí)驗(yàn)臺(tái)的搭建與實(shí)驗(yàn)數(shù)據(jù)的計(jì)算方法,然后通過實(shí)驗(yàn)測(cè)試其壓扭轉(zhuǎn)換效果,驗(yàn)證了簧片式壓-扭聯(lián)軸器可行性,并且壓扭效果達(dá)到2D比例閥設(shè)計(jì)要求。 第六章對(duì)論文進(jìn)行全面總結(jié),指出尚未解決的問題,提出以后的研究重點(diǎn)。
[Abstract]:The electro-hydraulic proportional valve is the core control element of the electro-hydraulic proportional control technology. It lies between the closed loop servo valve and the conventional switch valve, and has become a common component of the hydraulic system nowadays. It has great prospect of engineering application. Electrohydraulic proportional reversing (throttle) valve is one of them. The flow direction and size of the fluid flow can be controlled. In this paper, a pilot controlled electro-hydraulic proportional commutation (throttle) valve based on the double moving degrees of freedom of the valve core is studied, which is called the: 2D electro-hydraulic proportional commutative valve (throttle). 2D electro-hydraulic proportional reversing (throttle) valve from 2D reversing (throttle) valve, The innovation of this paper is that the linear displacement of proportional electromagnet is transformed into the rotary motion of 2D valve core, and then the sliding of valve core is promoted, which is composed of three parts: pressure-torsion coupling and proportional electromagnet, the main innovation of this paper is that the linear displacement of proportional electromagnet is transformed into the rotary motion of the valve core of 2D commutation valve by using pressure-torsion coupling. The function of electro-hydraulic proportional commutation (throttle) valve is realized, which has the advantages of simple guide control structure, high control precision and large single stage flow rate. This paper mainly studies the principle of 2D electro-hydraulic proportional commutation (throttle) valve, each chapter is described as follows:. The first chapter introduces the research background and the characteristics of electro-hydraulic proportional valve, describes the research status of proportional electromagnet and all kinds of electro-hydraulic proportional valve at home and abroad, summarizes the significance and main research content of the thesis. In the second chapter, 2D servo valve is introduced, and 2D electro-hydraulic proportional commutation (throttle) valve is put forward. The structure and principle of 2D electro-hydraulic proportional commutation (throttle) valve are analyzed, various guiding control schemes are put forward, and 2D electro-hydraulic proportional commutation (throttle) valve is designed. In the third chapter, the mathematical model is established for 2D reversing (throttle) valve guide control stage, then stability analysis is carried out, stability conditions are established, and then dynamic simulation is carried out to analyze the influence of several main parameters on the dynamic characteristics of guide control stage. In chapter 4, the structure and principle of pressure-torsional coupling and its Reed are designed and analyzed. Then the model of pressure-torsion coupling is modeled, and the deformation of spring is analyzed and compared with the numerical results of ANASYS simulation. The reliability of mathematical modeling is verified. In the fifth chapter, the material selection and processing of the spring press-torsion coupling and its Reed are described. The construction of the experimental bench and the calculation method of the experimental data are introduced. Then the effect of the pressure-torsion exchange is tested through the experiment. The feasibility of spring press-torsion coupling is verified, and the effect of compression and torsion meets the design requirement of 2D proportional valve. The sixth chapter summarizes the thesis, points out the unsolved problems, and puts forward the future research focus.
【學(xué)位授予單位】：浙江工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH137.52

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本文編號(hào)：1698853