基于AMESim的靜液傳動(dòng)車(chē)輛驅(qū)動(dòng)系統(tǒng)控制及仿真
本文關(guān)鍵詞:基于AMESim的靜液傳動(dòng)車(chē)輛驅(qū)動(dòng)系統(tǒng)控制及仿真,,由筆耕文化傳播整理發(fā)布。
文檔介紹:
國(guó)內(nèi)圖書(shū)分類(lèi)號(hào):U463.22
學(xué)校代碼:10213 國(guó)際圖書(shū)分類(lèi)號(hào):629
密級(jí):公開(kāi)碩士學(xué)位論文基于AMESim的靜液傳動(dòng)車(chē)輛驅(qū)動(dòng)系統(tǒng)控制及仿真碩士研究生:陳娟娟導(dǎo)
師:劉濤副教授申請(qǐng)學(xué)位:工學(xué)碩士學(xué)科:車(chē)輛工程所在單位:汽車(chē)工程學(xué)院答辯日期:2010年6月授予學(xué)位單位:哈爾濱工業(yè)大學(xué)Classified Index: U463.22
University Code: 10213 U.D.C: 629
Security: Open Dissertation for the Master’s Degree in Engineering CONTROL AND SIMULATION ABOUT DRIVING SYSTEM OF HYDROSTATIC TRANSMISSION VEHICLE BASED ON AMESim Candidate:Chen Juanjuan Supervisor:Associate Prof. Liu Tao Academic Degree Applied for:Master of Engineering Speciality:Vehicle Engineering Affiliation:School of Automobile Engineering Date of Defence:June, 2010 Degree-Conferring-Institution:Harbin Institute of Technology 哈爾濱工業(yè)大學(xué)工學(xué)碩士學(xué)位論文-I- 摘要靜液傳動(dòng)系統(tǒng)可以在較寬的轉(zhuǎn)速范圍內(nèi)實(shí)現(xiàn)車(chē)輛可控的無(wú)級(jí)變速,能夠以較小的體積和重量傳遞較大的功率,運(yùn)行成本低,在車(chē)輛行駛驅(qū)動(dòng)系統(tǒng)中得到了廣泛應(yīng)用。但該系統(tǒng)是一類(lèi)典型的非線性、時(shí)變性的高階系統(tǒng),車(chē)輛使用工況復(fù)雜、負(fù)載變化大,使系統(tǒng)的動(dòng)態(tài)性能隨負(fù)載變化而變化,而且變化的動(dòng)態(tài)性能也使整個(gè)動(dòng)力傳動(dòng)系統(tǒng)效率降低,耗油大,因此迫切需要采用先進(jìn)的控制技術(shù)來(lái)提高系統(tǒng)性能。本文概述了靜液傳動(dòng)車(chē)輛驅(qū)動(dòng)系統(tǒng)近年的發(fā)展現(xiàn)狀,并就靜液傳動(dòng)系統(tǒng)結(jié)構(gòu)及原理、變量泵-定量馬達(dá)調(diào)速系統(tǒng)、泵排量控制機(jī)構(gòu)、發(fā)動(dòng)機(jī)的性能評(píng)價(jià)指標(biāo)以及發(fā)動(dòng)機(jī)-變量泵功率匹配等相關(guān)問(wèn)題進(jìn)行了詳細(xì)的研究分析。重點(diǎn)研究了泵控馬達(dá)閉式回路調(diào)速系統(tǒng),基于液壓仿真軟件AMESim建立相應(yīng)的動(dòng)態(tài)仿真模型,且對(duì)影響系統(tǒng)動(dòng)態(tài)性能的因素進(jìn)行了仿真分析。分析表明需要設(shè)計(jì)合適的控制策略,從而提高調(diào)速系統(tǒng)的動(dòng)態(tài)性能。首先采用常規(guī)PID方法進(jìn)行速度控制仿真,結(jié)果表明PID只能利用一組固定參數(shù)進(jìn)行控制,具有一定局限性,單獨(dú)使用這種控制無(wú)法從根本上解決動(dòng)態(tài)品質(zhì)和穩(wěn)態(tài)精度的矛盾。為此,引入模糊控制的方法,利用車(chē)輪馬達(dá)轉(zhuǎn)速誤差和誤差的變化率作為模糊控制器的輸入,變量泵排量控制電流的補(bǔ)償量作為輸出,在MATLAB/Simulink中設(shè)計(jì)了模糊控制器。結(jié)合AMESim中的系統(tǒng)模型,進(jìn)行聯(lián)合仿真。結(jié)果表明模糊控制比PID控制具有更強(qiáng)的魯棒性,也說(shuō)明了本文所設(shè)計(jì)的模糊控制器控制效果較好,具有一定的理論意義和實(shí)際應(yīng)用價(jià)值。本文的研究?jī)?nèi)容為采用新型仿真軟件AMESim在靜液傳動(dòng)系統(tǒng)中的應(yīng)用提供了依據(jù),為設(shè)計(jì)泵控馬達(dá)調(diào)速系統(tǒng)的控制策略提供了參考。關(guān)鍵詞:靜液傳動(dòng);AMESim;PID控制;模糊控制哈爾濱工業(yè)大學(xué)工學(xué)碩士學(xué)位論文-II-Abstract Hydrostatic transmission system can be in a wide range of vehicle speed to realize stepless speed control, and with a small volume and weight to transfer large power, low operating cost, therefore it has been widely used in the vehicle driving systems. But this hydrostatic transmission system is a typical nonlinear, time varying high order system. plex working conditions, and big load changes, made the dynamic performance of system change with load changes, and the changes of the dynamic performance also made the power transmission system efficiency reducing, had a gas-guzzling. So it desperately needs to adopt the advanced control technology to improve system performance. This thesis summarized the development of research on the driving system of hydrostatic transmission vehicles in recent years. Detailed analysis had been done for the hydrostatic driving system structure and principle, the speed control system of the variable pump and quantitative motor, pump discharge control agencies, engine performance evaluation indexes, and power match between engine and the variable pump and other related problems. Focuses on closed loop speed adjust system of the pump controlling motor, the hydraulic dynamic simulation model was set up based on the AMESim simulation software. And then simulation analysis had been done for the influence factors of the system dynamic performance. An
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