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自動變速車輛坡道行駛自適應(yīng)換擋策略
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國家自然科學(xué)基金資助項目（60674094）


Self-adaptive Slope Gearshift Strategy for Automatic Transmission Vehicles
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    摘要:

    在分析汽車縱向動力學(xué)模型的基礎(chǔ)上,，運用改進型最小二乘法對整車質(zhì)量與廣義坡度進行實時辨識，以克服采用單一遺忘因子的最小二乘辨識法對變化不同步的參數(shù)辨識效果不佳的缺點,。制定了自適應(yīng)坡道換擋策略并進行了實車道路試驗,。試驗結(jié)果證明,，新型換擋策略能有效地解決了傳統(tǒng)換擋策略在坡道行駛時的問題,，能夠更好地滿足自動變速器坡道行駛的要求,。

    Abstract:

    With the analysis of vehicle longitudinal dynamic model, a modified recursive least squares for online estimation of vehicle mass and generalized slope was established. Compared with the recursive least squares of single forgetting factor, the modified algorithm had better performance in estimation of parameters with different change rates. On the base of that, the self-adaptive gearshift strategies of uphill and downhill slopes were developed. The vehicle road test results indicated that these strategies could improve the slope traveling performance of automatic transmission and overcome the problems encountered by traditional gearshift strategy travels on slopes. 

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史俊武,魯統(tǒng)利,李小偉,張建武.自動變速車輛坡道行駛自適應(yīng)換擋策略[J].農(nóng)業(yè)機械學(xué)報,2011,42(4):1-7. Shi Junwu, Lu Tongli, Li Xiaowei, Zhang Jianwu. Self-adaptive Slope Gearshift Strategy for Automatic Transmission Vehicles[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(4):1-7.

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