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针对独立车轮自导向性能差的问题,应用改进电轴技术在轻轨车辆电机单独驱动独立车轮中,形成一种电气耦合轮对型式,以无形的电轴替代传统的机械轴,改善导向性能。从电路分析理论出发,分析了新型耦合轮对的耦合性能和影响因素,确定电气耦合轮对是一种对左右车轮转角差自动施加反馈控制的技术,且轮对耦合的强弱可通过调节电容与电阻实现,调节电容方案因能耗低而优于调节电阻方案。建立电气耦合轮对和弹性阻尼耦合轮对轻轨车辆横向动力学模型,分析了轮对的转向行为。仿真结果表明:电气耦合轮对耦合力矩最大达到近1kN.m,耦合能力强;直线上受激扰后,2种车辆的横移量与摇头角自行趋于0,通过曲线时,横移量稳定值小于8mm,摇头角小于0.2°,因此,2种耦合轮对车辆具有直线对中能力和曲线通过性能;通过小曲线时,电机因电气耦合而造成的最大耗能功率低于140W,系统能耗低。
Aiming at the problem of poor self-steering performance of independent wheels, an improved electric axle technology is used to independently drive the independent wheels of a light rail vehicle motor to form a type of electrical coupling wheelset, which replaces the traditional mechanical axle with an invisible electric axle to improve the guiding performance. Based on the theory of circuit analysis, the coupling performance and influencing factors of the new coupling wheelset are analyzed. It is determined that the electrical coupling wheelset is a technology that automatically applies feedback control to the left and right wheel rotation angle difference. The strength of the wheelset coupling can be adjusted by adjusting the capacitance And resistance to achieve, adjust the capacitance of the program due to low energy consumption and better than adjusting the resistance program. The transverse dynamics model of the coupling light-rail vehicle with the electric coupling wheelset and the elastic damping coupling wheelset is established, and the steering behavior of the wheelset is analyzed. The simulation results show that the coupling torque of the coupling wheel couple reaches a maximum of 1kN.m and the coupling ability is strong. After being excited on a straight line, the traversing and shaking angles of the two kinds of vehicles tend to zero by themselves, and when passing through the curve, The stability value is less than 8mm and the moving angle is less than 0.2 °. Therefore, the two kinds of coupling wheels have a linear centering ability and a curve passing performance to the vehicle. When the small curve is adopted, the maximum power consumption caused by the electrical coupling of the motor is less than 140W. Low energy consumption.