本文選題：輪轂電機(jī)驅(qū)動(dòng) + 制動(dòng)能量回收�。� 參考：《吉林大學(xué)》2016年碩士論文

【摘要】：制動(dòng)能量回收作為電動(dòng)汽車(chē)獨(dú)有的技術(shù),能夠在車(chē)輛減速制動(dòng)時(shí)回收汽車(chē)的動(dòng)能,是增加電動(dòng)汽車(chē)?yán)m(xù)駛里程的重要手段之一。電動(dòng)輪汽車(chē),即輪轂電機(jī)驅(qū)動(dòng)電動(dòng)汽車(chē)以其噪聲小、無(wú)污染、能量轉(zhuǎn)化效率高、轉(zhuǎn)矩高精度控制等優(yōu)點(diǎn)成為汽車(chē)領(lǐng)域的研究熱點(diǎn)。但是,目前對(duì)制動(dòng)能量回收技術(shù)的研究大部分都是針對(duì)單軸驅(qū)動(dòng)的純電動(dòng)或混合動(dòng)力汽車(chē),對(duì)輪轂電機(jī)驅(qū)動(dòng)電動(dòng)汽車(chē)的相關(guān)研究相對(duì)較少。因此,對(duì)輪轂電機(jī)驅(qū)動(dòng)電動(dòng)汽車(chē)的制動(dòng)能量回收技術(shù)的研究具有重要的現(xiàn)實(shí)意義和理論意義。本文針對(duì)如何高效回收電動(dòng)輪汽車(chē)的制動(dòng)能量、合理進(jìn)行制動(dòng)力分配以及防止車(chē)輪抱死等關(guān)鍵問(wèn)題進(jìn)行研究。論文主要研究?jī)?nèi)容包括以下3個(gè)方面:1、根據(jù)輪轂電機(jī)驅(qū)動(dòng)電動(dòng)汽車(chē)不同于一般純電動(dòng)或混合動(dòng)力汽車(chē)的結(jié)構(gòu)特點(diǎn),對(duì)用于電動(dòng)輪汽車(chē)的再生制動(dòng)系統(tǒng)進(jìn)行研究。首先,分析了再生制動(dòng)系統(tǒng)的功能需求和約束條件。其次,在對(duì)原車(chē)的液壓制動(dòng)系統(tǒng)進(jìn)行簡(jiǎn)化的基礎(chǔ)上設(shè)計(jì)了符合本文研究特點(diǎn)的復(fù)合再生制動(dòng)系統(tǒng)的結(jié)構(gòu)方案。最后確定了電動(dòng)輪汽車(chē)復(fù)合再生制動(dòng)系統(tǒng)的軟件設(shè)計(jì)方案。2、根據(jù)整車(chē)制動(dòng)力分配理論及制動(dòng)過(guò)程的動(dòng)力學(xué)分析,確定電動(dòng)輪汽車(chē)的前后軸制動(dòng)力分配曲線(xiàn)仍為原車(chē)的前后軸制動(dòng)力分配曲線(xiàn)?線(xiàn)。針對(duì)電機(jī)-液壓復(fù)合制動(dòng)模式提出了基于模糊控制理論的電機(jī)再生制動(dòng)力與液壓制動(dòng)力的分配控制策略。其基本思想是:以制動(dòng)踏板位移l和電池的SOC值為輸入變量,以電機(jī)再生制動(dòng)力占總需求制動(dòng)力的比例為輸出變量,設(shè)計(jì)模糊控制器并制定相應(yīng)的模糊邏輯推理規(guī)則,實(shí)現(xiàn)對(duì)電機(jī)再生制動(dòng)與液壓制動(dòng)的協(xié)調(diào)控制。針對(duì)制動(dòng)過(guò)程中發(fā)生車(chē)輪抱死的現(xiàn)象,提出了制動(dòng)防抱死控制策略。3、在AMEsim軟件平臺(tái)中搭建15自由度電動(dòng)輪汽車(chē)的整車(chē)仿真模型及再生制動(dòng)系統(tǒng)和液壓制動(dòng)系統(tǒng)的仿真模型,在Matlab/Simulink軟件平臺(tái)中建立制動(dòng)能量回收及制動(dòng)防抱死控制策略模型。通過(guò)AMESim-Simulink的聯(lián)合仿真,對(duì)電動(dòng)輪汽車(chē)的基本制動(dòng)性能、制動(dòng)能量回收性能及制動(dòng)防抱死控制效果進(jìn)行驗(yàn)證分析。仿真結(jié)果表明本文所制定的控制策略在低輕度制動(dòng)工況、中強(qiáng)度制動(dòng)工況及高強(qiáng)度制動(dòng)工況下都能夠保證車(chē)輛的基本制動(dòng)性能,實(shí)現(xiàn)制動(dòng)能量的高效回收。另外,在低、中、高三種附著系數(shù)路面上的緊急制動(dòng)時(shí),也都能實(shí)現(xiàn)車(chē)輪的防抱死控制。從而也驗(yàn)證了本文所制定的制動(dòng)能量回收及制動(dòng)防抱死控制策略的可行性及合理性。
[Abstract]:Braking energy recovery, as a unique technology of electric vehicles, can recover the kinetic energy of vehicles when they slow down and brake. It is one of the important means to increase the driving range of electric vehicles. Electric wheel vehicle (EV), which is driven by hub motor, has become a research hotspot in automobile field because of its advantages of low noise, no pollution, high energy conversion efficiency, high torque precision control and so on. However, at present, most of the researches on braking energy recovery technology are aimed at single-axle drive pure electric vehicles or hybrid electric vehicles, and the research on hub motor driven electric vehicles is relatively few. Therefore, the research on braking energy recovery technology of electric vehicle driven by wheel hub motor has important practical and theoretical significance. In this paper, the key problems such as how to recover braking energy efficiently, how to distribute braking force reasonably and how to prevent wheel locking are studied. The main contents of this paper include the following three aspects: 1. According to the structural characteristics of the hub motor driven electric vehicle which is different from the ordinary pure electric or hybrid electric vehicle, the regenerative braking system for the electric wheel vehicle is studied. Firstly, the functional requirements and constraints of regenerative braking system are analyzed. Secondly, on the basis of simplifying the hydraulic braking system of the original vehicle, the structure scheme of the compound regenerative braking system which accords with the characteristics of this paper is designed. Finally, the software design scheme of compound regenerative braking system of electric wheel vehicle is determined. According to the theory of braking force distribution and the dynamic analysis of braking process, Determine that the front and rear axle braking force distribution curve of the electric wheel vehicle is still the original car front and rear axle brake force distribution curve? Line. Based on fuzzy control theory, the distribution control strategy of regenerative braking force and hydraulic braking force of motor is put forward. The basic idea is that the brake pedal displacement l and the SOC value of the battery are taken as input variables, and the proportion of regenerative braking force to the total required braking force is taken as the output variable. The fuzzy controller is designed and the corresponding fuzzy logic inference rules are worked out. The coordinated control of regenerative brake and hydraulic brake is realized. Aiming at the phenomenon of wheel locking during braking, this paper puts forward the braking anti-lock control strategy .3. the simulation model of 15 degree of freedom electric wheel vehicle and the simulation model of regenerative braking system and hydraulic braking system are built in the AMEsim software platform. The braking energy recovery and braking anti-lock control strategy model are established in Matlab / Simulink software platform. Through the joint simulation of AMESim-Simulink, the basic braking performance, braking energy recovery performance and braking anti-lock control effect of electric wheeled vehicle are verified and analyzed. The simulation results show that the control strategy developed in this paper can ensure the basic braking performance of the vehicle under low light braking condition, medium strength braking condition and high strength braking condition, and realize the efficient recovery of braking energy. In addition, in the low, middle and high adhesion coefficient on the road emergency braking, can also achieve anti-lock control wheel. The feasibility and rationality of braking energy recovery and braking anti-lock control strategy are also verified.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：U469.72;U463.526

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本文編號(hào)：2028925