【摘要】：液壓閥是液壓系統(tǒng)中的關(guān)鍵單元。隨著液壓系統(tǒng)與電子技術(shù)以及網(wǎng)絡(luò)技術(shù)的緊密結(jié)合,液壓閥的數(shù)字化將成為一種必然的趨勢。同時(shí),液壓系統(tǒng)也在向著集成。插裝化方向發(fā)展。 本文提出將2D閥用做先導(dǎo)大位移輸出,通過油路全橋閉環(huán)位置反饋控制插裝閥閥芯位移的設(shè)計(jì)方案,其創(chuàng)新點(diǎn)在于：(1)提出液壓全橋控制方式,以達(dá)到放大開環(huán)傳遞系數(shù)的目的,使先導(dǎo)閥在6mm的范圍內(nèi)穩(wěn)定輸出;(2)在主閥芯內(nèi)部開槽通過直接位置閉環(huán)控制,使主閥芯和先導(dǎo)閥芯位置隨動(dòng),提高了主閥芯位移的精度及響應(yīng)速度。 本文對(duì)直接位移反饋數(shù)字插裝閥進(jìn)行了數(shù)學(xué)建模,并進(jìn)行模塊化分析,用解微分方程算法編寫Matlab程序進(jìn)行仿真,在仿真過程中優(yōu)化各個(gè)參數(shù),以達(dá)到最優(yōu)化設(shè)計(jì)。理論分析和實(shí)驗(yàn)結(jié)果表明該設(shè)計(jì)能夠達(dá)到設(shè)計(jì)要求。論文的各章節(jié)內(nèi)容如下： 第一章,對(duì)液壓技術(shù)的發(fā)展做了闡述。對(duì)目前國內(nèi)外的插裝節(jié)流技術(shù)進(jìn)行了對(duì)比；提出了本論文直接反饋數(shù)字插裝閥的實(shí)現(xiàn)方案；明確了課題的內(nèi)容。 第二章,研究了閉環(huán)控制數(shù)字插裝閥的結(jié)構(gòu)及實(shí)現(xiàn)原理。優(yōu)化了數(shù)字插裝閥的先導(dǎo)級(jí)。 第三、四章,對(duì)位置閉環(huán)數(shù)字插裝閥進(jìn)行了數(shù)學(xué)建模和模塊化分析,并基于MATLAB進(jìn)行數(shù)值仿真,優(yōu)化了結(jié)構(gòu)參數(shù)。 第五章,對(duì)整個(gè)數(shù)字插裝閥的參數(shù)進(jìn)行設(shè)計(jì)和校核,對(duì)關(guān)鍵零件的加工材料和工藝進(jìn)行了說明。 第六章,搭建實(shí)驗(yàn)平臺(tái),對(duì)直接位置反饋數(shù)字插裝閥進(jìn)行靜動(dòng)態(tài)性能實(shí)驗(yàn)研究,實(shí)驗(yàn)結(jié)果驗(yàn)證了數(shù)字插裝閥達(dá)到了預(yù)期的設(shè)計(jì)要求。 第七章,總結(jié)與展望。
[Abstract]:Hydraulic valve is a key unit in hydraulic system. With the combination of hydraulic system, electronic technology and network technology, the digitization of hydraulic valve will become an inevitable trend. At the same time, the hydraulic system is also in the direction of integration. The direction of instrumentation is developing. In this paper, 2D valve is used as the leading large displacement output, and the valve core displacement is controlled by the closed loop position feedback of the whole oil bridge. The innovations of the scheme are as follows: (1) the hydraulic bridge control method is proposed. In order to enlarge the open loop transfer coefficient, the pilot valve can output stably in the range of 6mm. (2) through the direct position closed loop control in the main valve core, the position of the main valve core and the leading valve core are followed, and the precision and response speed of the main valve core displacement are improved. In this paper, the mathematical model of direct displacement feedback digital cartridge valve is established, and the modularization analysis is carried out. The Matlab program is compiled by solving differential equation algorithm, and the parameters are optimized in the process of simulation so as to achieve the optimum design. Theoretical analysis and experimental results show that the design can meet the design requirements. The contents of each chapter are as follows: the first chapter describes the development of hydraulic technology. This paper compares the current domestic and international plugging and throttling technology, puts forward the realization scheme of the direct feedback digital cartridge valve in this paper, and clarifies the contents of the subject. In the second chapter, the structure and realization principle of closed-loop control digital cartridge valve are studied. The pilot stage of digital cartridge valve is optimized. In the third and fourth chapters, the mathematical modeling and modular analysis of position closed loop digital cartridge valve are carried out, and the structural parameters are optimized by numerical simulation based on MATLAB. In the fifth chapter, the parameters of the whole digital cartridge valve are designed and checked, and the processing materials and processes of the key parts are explained. In the sixth chapter, the experimental platform is built to study the static and dynamic performance of the direct position feedback digital cartridge valve. The experimental results verify that the digital cartridge valve meets the expected design requirements. Chapter seven, summary and prospect.
【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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