双离合器车辆蠕动和起步非线性无静差跟踪控制与仿真

发布时间：2018-01-01 23:01

本文关键词：双离合器车辆蠕动和起步非线性无静差跟踪控制与仿真　出处：《中国公路学报》2016年03期 　论文类型：期刊论文

【摘要】：针对湿式双离合器车辆蠕动和起步过程存在的外部不确定扰动,提出了一种非线性无静差跟踪控制方法。首先建立双离合器车辆蠕动和起步过程的非线性动力学模型,并采用反馈线性化方法将非线性动力学模型转化为线性模型;分析了参考信号和扰动信号的结构特点,构建参考信号和扰动信号的不稳定模型,并在此基础上构建无静差跟踪控制系统;采用极点配置技术实现系统的状态反馈控制。通过非线性变换,将线性系统的控制信号转换为原非线性系统的控制信号从而实现非线性系统的无静差跟踪控制;最后通过仿真试验验证了控制算法的有效性。结果表明:提出的双离合器车辆蠕动和起步的控制方法,在不确定外部扰动信号作用下,能够快速实现无静差跟踪控制,且能将扰动引起的最大转速偏差控制在较小的范围之内。
[Abstract]:Aiming at the external uncertain disturbance in the process of wriggling and starting of wet double-clutch vehicle. In this paper, a nonlinear static error tracking control method is proposed. Firstly, a nonlinear dynamic model for the creep and starting process of a double-clutch vehicle is established. The nonlinear dynamic model is transformed into the linear model by the feedback linearization method. The structure characteristics of reference signal and disturbance signal are analyzed, and the unstable model of reference signal and disturbance signal is constructed, and on this basis, the no-static error tracking control system is constructed. The state feedback control of the system is realized by pole assignment technique, and the control signal of the linear system is transformed into the control signal of the original nonlinear system by nonlinear transformation to realize the tracking control of the nonlinear system without static error. Finally, the effectiveness of the control algorithm is verified by simulation experiments. The results show that the proposed control method of dual-clutch vehicle creep and starting under the action of uncertain external disturbance signal. The tracking control without static error can be realized quickly, and the maximum speed deviation caused by disturbance can be controlled in a small range.
【作者单位】：合肥工业大学电气与自动化工程学院;
【基金】：国家自然科学基金项目(51405122) 中央高校基本科研业务费专项资金项目(2014HGCH0003)
【分类号】：U463.2
【正文快照】： ror trace;creep;launch0引言双离合器式自动变速器(Dual-clutch Trans-mission,DCT)是一种新型的自动变速装置。这种变速器具有2套传动系统,通过2个离合器的切换控制,实现快速、平稳的换挡过程,是目前国内外企业和研究学者关注的焦点。DCT车辆蠕动和起步过程中存在滚动阻力和

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