基于仿人智能控制的汽车动力转向系统

Vehicle Power Steering SystemBased on Human-simulated Intelligent Control

传统的液压动力转向系统容易出现过助力现象,能耗大、对环境有油污染。电动助力系统是通过带微处理器的控制器控制电动机提供助力的一种伺服控制系统,电动助力是汽车转向系统的发展方向。在对汽车电动助力转向系统深入研究的基础上,针对驾驶员操作习惯的差异、路况等的复杂性和不确定性,提出了一种新的鲁棒性强、适应性好的控制算法,并在实际车辆转向系统中得到了应用,实践证明该控制算法兼顾了控制效果和人的感觉(路感),控制效果令人满意。

Thetraditional power steering by fluid drive has many defects such as producing extra steering, oil pollution and consuming excessive resources. Electric Power Steering is servo-control system which can supply power by motor which is controlledby micro-processor-embeded controller. So the application of Electric Power Steering Systemin vehicleis the developing direction. Based on the deep research of power steering system for vehicle, aiming at the complexity and uncertaintyof road and the difference for driver operating habit, the paper presents a sort of new algorithmthat is stronger in robustness, better in adaptability. The algorithmhas been applied in the physical vehicle steering system. The engineering practice shows that the algorithmtakes care of both control effect and person's feeling, and it is satisfactory to control effect.