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混合動(dòng)力汽車(chē)行星機(jī)構(gòu)動(dòng)力耦合器控制策略仿真
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    摘要:

    行星機(jī)構(gòu)動(dòng)力耦合器通過(guò)一組離合器的結(jié)合、分離實(shí)現(xiàn)混合動(dòng)力汽車(chē)的各種驅(qū)動(dòng)模式。運(yùn)用虛擬杠桿法分析了行星機(jī)構(gòu)動(dòng)力耦合器的轉(zhuǎn)速合成特性和轉(zhuǎn)矩合成特性。為滿足驅(qū)動(dòng)模式切換過(guò)程的動(dòng)態(tài)特性及離合器結(jié)合平順的要求，研究了動(dòng)力耦合器的模糊控制策略。該策略以加速踏板行程和踏板行程變化率為模糊輸入量，得到的輸出量為離合器結(jié)合的初始?jí)毫徒Y(jié)合時(shí)壓力變化率。建立了動(dòng)力耦合器的仿真模型，仿真結(jié)果表明該模糊控制策略既能反映駕駛員的操作意圖，又能滿足車(chē)輛的動(dòng)力性和平順性的要求。

    Abstract:

    The principle of coupler with planetary mechanism was elaborated. The coupler can decide the HEV driving mode through a set of clutches engaging and disengaging. The rotation and torque composition of coupler was analyzed through the means of virtual level. The fuzzy algorithm was proposed to control the clutches for desired transient and smooth performance. The acceleration pedal travel and its change rate were used as input, and the output were clutches initial pressure and the change rate of engaging pressure. The simulation model of the coupler with planetary mechanism was established finally. The simulation results showed that this control strategy could meet the driver operating demands, increase HEV speed and switch driving mode smoothly under different driving conditions. 

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鄒乃威,劉金剛,周云山,張友坤,黃偉,蔡源春.混合動(dòng)力汽車(chē)行星機(jī)構(gòu)動(dòng)力耦合器控制策略仿真[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2008,39(3):5-9.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(3):5-9.

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