【摘要】：隨著中國(guó)液壓行業(yè)的快速發(fā)展，一些行業(yè)發(fā)展的瓶頸問(wèn)題也凸顯出來(lái)，例如國(guó)內(nèi)液壓元件的生產(chǎn)廠家的產(chǎn)品基本都是低水平的普通液壓元件，產(chǎn)能過(guò)剩，導(dǎo)致廠家不得不采取降低價(jià)格的措施來(lái)適應(yīng)競(jìng)爭(zhēng)激烈的市場(chǎng)，同時(shí)國(guó)內(nèi)無(wú)法生產(chǎn)出性能可靠的高端液壓元件，用戶不得不購(gòu)買(mǎi)國(guó)外價(jià)格昂貴產(chǎn)品，受人制約。所以國(guó)內(nèi)液壓元件行業(yè)的發(fā)展方向之一應(yīng)該是具有生產(chǎn)高檔、高技術(shù)含量的液壓元件的能力。液壓缸作為最常用的液壓元件之一，也存在著制造水平低、高檔液壓缸嚴(yán)重依賴(lài)進(jìn)口的問(wèn)題，而且目前廣泛應(yīng)用的普通工程液壓缸已經(jīng)不能滿足國(guó)內(nèi)的應(yīng)用需求，很多領(lǐng)域需要使用特殊結(jié)構(gòu)和功能的液壓缸。 同樣隨著液壓行業(yè)的快速發(fā)展，電液伺服閥控式電液伺服系統(tǒng)在航天、航空、航海、兵器、礦山、冶金及民用等方面都得到了廣泛應(yīng)用。但隨著近些年復(fù)雜運(yùn)動(dòng)控制系統(tǒng)對(duì)液壓伺服系統(tǒng)性能要求的增加，液壓控制系統(tǒng)的局限性開(kāi)始凸顯出來(lái)。例如電液伺服閥和液壓缸的動(dòng)力學(xué)特性和非線性問(wèn)題，它們是影響閥控液壓缸電液伺服系統(tǒng)性能的主要因素，，所以如何提高系統(tǒng)適應(yīng)性和魯棒性一直是電液伺服系統(tǒng)的研究熱點(diǎn)。 針對(duì)以上問(wèn)題，本文設(shè)計(jì)了一種特殊結(jié)構(gòu)的液壓缸——單出桿對(duì)稱(chēng)液壓缸，它既有單出桿非對(duì)稱(chēng)液壓缸結(jié)構(gòu)尺寸小的優(yōu)點(diǎn)，也有雙出桿對(duì)稱(chēng)液壓缸動(dòng)態(tài)特性對(duì)稱(chēng)的優(yōu)點(diǎn)，特別適合應(yīng)用于飛行模擬器、運(yùn)動(dòng)平臺(tái)等場(chǎng)合。同時(shí)設(shè)計(jì)了對(duì)稱(chēng)閥控單出桿對(duì)稱(chēng)液壓缸電液伺服系統(tǒng)和對(duì)稱(chēng)閥控單出桿非對(duì)稱(chēng)液壓缸電液伺服系統(tǒng)，通過(guò)對(duì)兩種系統(tǒng)的靜態(tài)特性理論分析、動(dòng)態(tài)特性仿真分析和實(shí)驗(yàn)研究，驗(yàn)證了單出桿對(duì)稱(chēng)液壓缸具有承載能力大、動(dòng)態(tài)特性對(duì)稱(chēng)的優(yōu)點(diǎn)。
[Abstract]:With the rapid development of the hydraulic industry in China, the bottleneck problems in the development of some industries have also been highlighted. For example, the products of domestic manufacturers of hydraulic components are basically low-level ordinary hydraulic components, with overcapacity. As a result, manufacturers have to take measures to reduce the price to adapt to the fierce competition in the market, at the same time, the domestic can not produce high-end hydraulic components with reliable performance, customers have to buy expensive products from abroad, which is restricted by people. Therefore, one of the developing directions of domestic hydraulic components industry should be the ability to produce high-grade and high-tech hydraulic components. As one of the most commonly used hydraulic components, the hydraulic cylinder also has the problems of low manufacturing level and high grade hydraulic cylinder relying heavily on imports. Moreover, the widely used ordinary engineering hydraulic cylinder has been unable to meet the domestic application needs. Hydraulic cylinders with special structures and functions are required in many fields. With the rapid development of hydraulic industry, electro-hydraulic servo valve-controlled electro-hydraulic servo system has been widely used in aerospace, aviation, navigation, weapons, mines, metallurgy and civil. However, with the increase of the performance requirements of the complex motion control system in recent years, the limitation of the hydraulic control system has been highlighted. For example, the dynamic characteristics and nonlinear problems of the electro-hydraulic servo valve and the hydraulic cylinder are the main factors that affect the performance of the electro-hydraulic servo system of the valve-controlled hydraulic cylinder. Therefore, how to improve the adaptability and robustness of the system has been the research hotspot of electro-hydraulic servo system. In order to solve the above problems, a special structure hydraulic cylinder, single outlet rod symmetrical cylinder, is designed in this paper. It has the advantages of small structure size and symmetrical dynamic characteristics of double outlet rod symmetrical hydraulic cylinder. Especially suitable for flight simulator, sports platform and other occasions. At the same time, the electro-hydraulic servo system of symmetrical hydraulic cylinder with symmetrical valve control rod and asymmetric hydraulic cylinder with symmetrical valve control rod is designed. The static characteristics of the two systems are analyzed theoretically, the dynamic characteristics are simulated and studied experimentally. It is proved that the symmetrical hydraulic cylinder with single outlet rod has the advantages of large bearing capacity and symmetrical dynamic characteristics.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH137.5

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