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雙離合器自動變速器換擋特性與控制仿真
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Shift Dynamics and Control of Dual Clutch Transmissions
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    摘要:

    針對應(yīng)用某履帶車輛的雙離合器自動變速器（DCT）換擋控制問題，首先提出系統(tǒng)動力傳動方案，然后對升擋和降擋過程進(jìn)行動力學(xué)和運動學(xué)分析，運用Matlab/Simulink建立傳動系統(tǒng)的仿真模型。分別對某車輛升擋和降擋過程進(jìn)行了仿真計算，仿真結(jié)果體現(xiàn)了車輛的換擋品質(zhì)。在升擋過程中通過PID控制器控制高擋離合器的充油油壓，在降擋過程中采用PI控制器控制發(fā)動機油門開度，這種控制策略可以使DCT換擋平穩(wěn)，減少系統(tǒng)負(fù)轉(zhuǎn)矩的產(chǎn)生，提高車輛的換擋品質(zhì)。

    Abstract:

    A DCT structure, which adopted on a certain tracked vehicle, was proposed and system dynamic equations were derived according to the detailed analysis of upshifts and downshifts. The analytical model for the simulation, analysis and control of shift dynamics for DCT vehicles was built by means of Matlab/Simulink. An upshift and a downshift were simulated as case study and simulation results displayed the parameters have important influence on shift quality. A PID controller was proposed to control the oil pressure in on-coming clutch in upshift process and a PI controller was also put forward to control oil throttle in downshift process. Such control strategies can avoid clutch tie-up and engine flare, result in better shift quality.

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張金樂,馬彪,張英鋒,李和言.雙離合器自動變速器換擋特性與控制仿真[J].農(nóng)業(yè)機械學(xué)報,2010,41(5):6-11. Shift Dynamics and Control of Dual Clutch Transmissions[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(5):6-11.

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