The invention discloses a drive-by-wire power-assisted steering refitting method for changing hub motor drive of an electric vehicle, and relates to the technical field of electric vehicles. The method involves a steering wheel, a steering wheel angle sensor, a torque sensor, an additionally-mounted power-assisted motor, a steering wheel stand column clutch, tires, an original power-assisted motor, a distributed drive-by-wire steering ECU, an original vehicle power-assisted steering ECU and a CAN signal circuit, the power-assisted motor is additionally arranged to directly apply power-assistedtorque to the steering column through a worm and gear mechanism under the control of the distributed driving steer-by-wire ECU, and the original power-assisted motor directly applies power-assisted torque to a tie rod through the gear and rack mechanism under the control of the original vehicle power-assisted steering ECU. A newly-added power-assisted steering controller communicates with a CAN local area network to realize control of the newly-added power-assisted motor on the stand column, so when enough torque cannot be output after the hub motor is additionally arranged, the increased steering resistance is rapidly and effectively overcome so as to improve the steering response of a vehicle.
本发明公开了一种电动车辆改轮毂电机驱动的线控助力转向改装方法,涉及电动汽车技术领域。本发明包括方向盘、方向盘转角传感器、转矩传感器、加装助力电机、方向盘立柱离合、轮胎、原助力电机、分布式驱动线控转向ECU、原车助力转向ECU和CAN信号线路,加装助力电机在分布式驱动线控转向ECU的控制下,通过蜗轮蜗杆机构对转向管柱直接施加助力矩,原助力电机则在原车助力转向ECU的控制下通过齿轮齿条机构直接对横拉杆施加助力矩,本发明通过新增线控助力转向控制器与CAN局域网通讯,实现对立柱上新增的助力电机进行控制,在加装轮毂电机后无法输出足够的力矩时,快速有效的克服增大的转向阻力,以改善车辆的转向响应。
Drive-by-wire power-assisted steering refitting method for changing hub motor drive of electric vehicle
一种电动车辆改轮毂电机驱动的线控助力转向改装方法
2020-06-19
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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