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无级变速器电液控制系统关键技术

, PP. 1247-1252

Keywords: 汽车工程,无级变速器,电液控制系统,DNR湿式离合器

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Abstract:

针对无级变速器(CVT)电液控制系统软件开发过程中DNR离合器控制效果一致性的问题重点进行了分析。由于参数的多样性、不确定性和时变性导致了DNR湿式离合器开环控制存在一定难题,在分析其结合过程的基础上,针对半离合点和滑摩过程的控制提出了一种自学习方法。该方法将涡轮加速度作为目标,构建了李亚普诺夫判据的二次型性能方程,制定了学习规则,从理论上确保了自学习过程的渐进收敛性。为验证上述自学习控制算法在实际应用过程中的有效性,本文在ETAS软件中对上述控制算法进行了建模,并利用快速原型仿真工具对上述算法在实车上进行了测试,试验表明应用效果良好。

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