HEV再生制動(dòng)與ABS協(xié)調(diào)控制仿真研究
本文選題:混合動(dòng)力汽車(chē) 切入點(diǎn):再生制動(dòng) 出處:《長(zhǎng)安大學(xué)》2016年碩士論文
【摘要】:節(jié)能和環(huán)保是當(dāng)今世界的主題,人們希望通過(guò)改善環(huán)境來(lái)提高自身的生活質(zhì)量。近些年來(lái),霧霾、PM2.5(可吸入細(xì)顆粒物)逐漸成為人們口中談?wù)摰脑掝},然而矛頭開(kāi)始指向汽車(chē)尾氣排放。純電動(dòng)車(chē)沒(méi)有尾氣排放,但是其續(xù)航里程短,成本高、電池壽命短限制了其發(fā)展。混合動(dòng)力汽車(chē)(HEV)采用傳統(tǒng)內(nèi)燃機(jī)和蓄電池共同驅(qū)動(dòng)車(chē)輛行駛,續(xù)航里程相對(duì)較長(zhǎng)而且在一定程度上降低了尾氣排放。制動(dòng)能量可回收是混合動(dòng)力汽車(chē)的一大特色,然而再生電機(jī)的加入勢(shì)必會(huì)影響汽車(chē)的制動(dòng)力分配,進(jìn)而影響汽車(chē)的制動(dòng)安全性和穩(wěn)定性。現(xiàn)如今ABS防抱死系統(tǒng)廣泛應(yīng)用,再生電機(jī)制動(dòng)系統(tǒng)和ABS制動(dòng)系統(tǒng)必然會(huì)共同控制車(chē)輛。但是電機(jī)再生制動(dòng)系統(tǒng)和ABS系統(tǒng)會(huì)出現(xiàn)控制不協(xié)調(diào)的問(wèn)題,甚至?xí)霈F(xiàn)車(chē)輪抱死的危險(xiǎn)工況。為了確;旌蟿(dòng)力汽車(chē)在制動(dòng)穩(wěn)定性和安全性的前提下盡可能回收制動(dòng)能量,同時(shí)解決再生制動(dòng)系統(tǒng)與ABS制動(dòng)系統(tǒng)的控制矛盾,本文進(jìn)行了以下幾方面工作:首先通過(guò)分析傳統(tǒng)汽車(chē)制動(dòng)特性,進(jìn)一步研究了混合動(dòng)力汽車(chē)制動(dòng)力分配情況。提出基于ECE制動(dòng)法規(guī)來(lái)確定混合動(dòng)力汽車(chē)前后軸制動(dòng)力分配系數(shù)的范圍,推導(dǎo)出電機(jī)需求峰值制動(dòng)力矩,進(jìn)而建立出HEV制動(dòng)力分配策略。其次為解決再生制動(dòng)系統(tǒng)和ABS防抱死系統(tǒng)之間的控制不協(xié)調(diào)的問(wèn)題,本文基于邏輯門(mén)限控制策略,通過(guò)設(shè)置兩個(gè)提前觸發(fā)的門(mén)限值,搭建出HEV再生制動(dòng)與ABS集成控制策略。最后基于MATLAB/Simulink平臺(tái),建立前向路徑和后向路徑制動(dòng)力分配模型,通過(guò)ADVISOR仿真軟件進(jìn)行仿真,將其仿真結(jié)果與ADVISOR缺省策略仿真結(jié)果進(jìn)行對(duì)比。仿真結(jié)果顯示本文設(shè)計(jì)控制策略可以在保證制動(dòng)穩(wěn)定和安全情況下,回收更多的制動(dòng)能量,改善排放和降低燃油消耗。而且解決了再生制動(dòng)與ABS液壓制動(dòng)之間的控制矛盾,實(shí)現(xiàn)了兩者的協(xié)調(diào)控制。
[Abstract]:Energy conservation and environmental protection are the main themes of the world today, and people want to improve their quality of life by improving the environment. In recent years, haze PM2.5 has become a topic of discussion. But it started to point to car emissions. Pure electric cars don't have emissions, but they have short range and high costs. The short battery life limits its development. Hybrid electric vehicles (HEV) use conventional internal combustion engines and batteries to drive vehicles together. Braking energy recoverability is a major feature of hybrid electric vehicles, but the addition of regenerative motors will inevitably affect the braking power distribution of the vehicle. And then affect the braking safety and stability of the automobile. Nowadays, ABS anti-lock braking system is widely used, The braking system of regenerative motor and the braking system of ABS will certainly control the vehicle together, but the problems of uncoordinated control between the regenerative braking system of motor and the system of ABS will appear. In order to ensure the braking stability and safety of hybrid vehicle, the braking energy can be recovered as much as possible, and the control contradiction between regenerative braking system and ABS braking system can be solved at the same time. The following work is done in this paper: firstly, by analyzing the braking characteristics of traditional automobile, The braking force distribution of hybrid electric vehicle is further studied. The range of braking force distribution coefficient of front and rear axle of hybrid electric vehicle is determined based on ECE brake regulations, and the peak braking torque of motor demand is deduced. Secondly, in order to solve the problem of uncoordinated control between regenerative braking system and ABS anti-lock braking system, based on the logic threshold control strategy, this paper sets two threshold values that trigger ahead of time. The integrated control strategy of HEV regenerative braking and ABS is built. Finally, based on the MATLAB/Simulink platform, the forward path and backward path braking force distribution models are established and simulated by ADVISOR simulation software. The simulation results show that the control strategy designed in this paper can recover more braking energy under the condition of ensuring braking stability and safety. The control contradiction between regenerative braking and ABS hydraulic brake is solved and the coordination control between them is realized.
【學(xué)位授予單位】:長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2016
【分類(lèi)號(hào)】:U463.5
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