本文選題：數(shù)字液壓缸 + AMESim��； 參考：《天津大學(xué)》2013年碩士論文

【摘要】：數(shù)字液壓是正在發(fā)展的液壓新技術(shù)，，數(shù)字液壓缸作為其中一種執(zhí)行元件，已經(jīng)顯現(xiàn)出巨大的發(fā)展?jié)摿�。它可以運(yùn)用到絕大多數(shù)電液伺服控制的場(chǎng)合，將傳統(tǒng)液壓復(fù)雜的速度控制和位置控制變成了單一的脈沖控制，大大簡(jiǎn)化了控制系統(tǒng)。本文主要通過AMESim軟件對(duì)其中一種內(nèi)置反饋的步進(jìn)式數(shù)字液壓缸進(jìn)行了建模與仿真，分析了其在不同情況下的動(dòng)態(tài)特性和跟蹤特性。全文的主要研究?jī)?nèi)容和成果如下： （1）在研究數(shù)字化液壓傳動(dòng)發(fā)展的基礎(chǔ)上，重點(diǎn)對(duì)數(shù)字液壓缸的概念以及國(guó)內(nèi)外發(fā)展現(xiàn)狀進(jìn)行了介紹。利用AMESim軟件進(jìn)行物理建模和仿真，挖掘其優(yōu)勢(shì)和特點(diǎn)，并針對(duì)不足之處提出改進(jìn)措施。 （2）在研究數(shù)字液壓缸結(jié)構(gòu)組成和工作原理的基礎(chǔ)上，針對(duì)特定工況，對(duì)其結(jié)構(gòu)參數(shù)進(jìn)行了計(jì)算。同時(shí)，對(duì)閥控不對(duì)稱液壓缸進(jìn)行了數(shù)學(xué)建模和分析，為數(shù)字液壓缸的AMESim建模與仿真分析提供參考和對(duì)照。 （3）根據(jù)所建立的AMESim模型，進(jìn)行仿真。驗(yàn)證了數(shù)字液壓缸增量式的工作原理，并通過改變單一變量保持其它變量不變的方法，仿真分析了負(fù)載變化、供油壓力變化、制造誤差、閥開口情況、連接管路楊氏模量等因素對(duì)數(shù)字液壓缸動(dòng)態(tài)特性的影響，同時(shí)提出了減小相應(yīng)影響的措施。以正弦跟蹤為例，仿真分析了數(shù)字液壓缸的跟蹤特性和改變運(yùn)動(dòng)方向時(shí)引起換向沖擊的原因，針對(duì)造成沖擊的原因，給出了相應(yīng)改善措施。 （4）搭建了數(shù)字實(shí)驗(yàn)臺(tái)，對(duì)數(shù)字液壓缸的單缸重復(fù)精度和多缸同步運(yùn)行情況進(jìn)行了實(shí)驗(yàn)，與仿真結(jié)果進(jìn)行了比較分析。
[Abstract]:Digital hydraulic system is a new hydraulic technology. As one of the actuators, digital hydraulic cylinder has shown great development potential. It can be used in most cases of electro-hydraulic servo control, which makes the traditional hydraulic complex speed control and position control become a single pulse control, which greatly simplifies the control system. In this paper, a kind of step digital hydraulic cylinder with built-in feedback is modeled and simulated by AMESim software, and its dynamic and tracking characteristics are analyzed. The main research contents and achievements are as follows: (1) on the basis of the development of digital hydraulic transmission, the concept of digital hydraulic cylinder and the present situation of development at home and abroad are introduced. The physical modeling and simulation of AMESim software are used to excavate its advantages and characteristics, and the improvement measures are put forward in view of its shortcomings. (2) on the basis of studying the structure and working principle of the digital hydraulic cylinder, it aims at specific working conditions. The structural parameters are calculated. At the same time, mathematical modeling and analysis of valve-controlled asymmetric hydraulic cylinder are carried out, which provides reference and comparison for AMESim modeling and simulation analysis of digital hydraulic cylinder. (3) according to the established AMESim model, simulation is carried out. The working principle of incremental digital hydraulic cylinder is verified, and by changing the single variable to keep other variables unchanged, the variation of load, oil supply pressure, manufacturing error and valve opening are simulated and analyzed. The influence of Young's modulus on the dynamic characteristics of the digital hydraulic cylinder is discussed, and the corresponding measures to reduce the influence are put forward. Taking sinusoidal tracking as an example, the tracking characteristics of digital hydraulic cylinder and the causes of reversing impact caused by changing the direction of motion are simulated and analyzed. According to the causes of the impact, the corresponding improvement measures are given. (4) A digital experimental platform is built. The experiment of single cylinder repetition accuracy and multi-cylinder synchronous operation of digital hydraulic cylinder is carried out, and the simulation results are compared and analyzed.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TH137.51

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