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电动汽车转向系统的震动分析与稳定化

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电动汽车转向系统的震动分析与稳定化(中文5000字,英文2000字)
摘要:本文提出了一种新的控制方法,以改善该电动汽车(EV)转向系统的安全性能。研究发现,电动汽车转向系统在特定定的速度表现不稳定震动行为,它可以恶化转向性能,甚至使车辆陷入空转。在本文提出了一种新的动态模型来描述EV转向系统,其中考虑到对于电动机驱动EV的推进。而且,驾驶者的反应时间和引起的路面的凹凸的干扰也纳入EV转向模式。它可以识别周期性,准周期和震动运动发生在EV转向系统相对于不同的前进速度。因此,一新的控制方案,即自适应延迟反馈控制(ATDFC),提出并实现稳定EV转向系统从震动到稳定运行。最后,进行了该模型的有效性和控制的验证。
Analysis and Stabilization of Chaos in the Electric-Vehicle Steering System
Abstract—This paper presents a new control method to improve the safety performance of the electric-vehicle (EV) steering system. It is found that the EV steering system exhibits unstable chaotic behaviors at certain speeds, which can deteriorate the steering performance and even make vehicles fall into spin. In this paper, a new dynamic model is proposed to describe the EV steering system, which takes into account the motor drive for EV propulsion. Moreover, both the driver’s reaction time and the disturbance caused by irregularities of the road surface are also incorporated into the EV steering model. It can be identified that periodic, quasi-periodic, and chaotic motions occur at the EV steering system with respect to different forward speeds. Thus, anew control scheme, namely the adaptive time-delayed feedback control (ATDFC), is proposed and implemented to stabilize the EV steering system from chaos to stable operation. Finally, the validity of the proposed model and control are verified. Index Terms—Adaptive time-delayed feedback control(ATDFC), chaos, electric vehicle (EV), stabilization, steering system. [来源:http://www.doc163.com]

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