The present invention provides a driver torque estimation device and an electric power steering system. The driver torque estimation device includes a transfer ratio variation device (7) and a torsionbar (17B); an electric motor (23); a torque sensor (42); an input shaft rotation acquisition unit configured to acquire the rotational angle of an input shaft (11) of the transfer ratio variation device (7); and an electronic control unit (50) configured to acquire the rotational angle of an output shaft (12) of the transfer ratio variation device (7), compute an estimated value of the first disturbance and an estimated value of the second disturbance and compute an estimated value of the driver torque based on the torsion bar torque, the estimated value of the first disturbance and the estimated value of the second disturbance.
提供了驱动扭矩估计装置和电动转向系统。驱动扭矩估计装置包括:传递比改变装置(7)和扭杆(17B);电机(23);扭矩传感器(42);输入轴旋转获取单元,其被配置成获取传递比改变装置(7)的输入轴(11)的旋转角度;以及电子控制单元(50),其被配置成获取传递比改变装置(7)的输出轴(12)的旋转角度。电子控制单元(50)被配置成计算第一扰动的估计值。电子控制单元(50)被配置成计算第二扰动的估计值。电子控制单元(50)被配置成基于扭杆扭矩、第一扰动的估计值和第二扰动的估计值来计算驱动扭矩的估计值。
Driver torque estimation device and electric power steering system
驱动扭矩估计装置以及电动转向系统
2020-04-17
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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