Electric drive power assisted steering system capable of performing drive ratio variation control by motor and control method thereof
A technology of electric power steering and variable transmission ratio, which is applied in the direction of electric steering mechanism, automatic steering control parts, steering mechanism, etc. Effects of Steering Intervention
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[0015] like figure 1 As shown, the electric power steering system that relies on the motor for variable transmission ratio control consists of a steering wheel 1, a rack 9 connected to the steering wheel 1 through a steering column 6, and a torque sensor 3 located below the steering wheel. It includes a booster motor 7 connected to the rack 9 through a reduction mechanism 8, a steering rocker 10 connected to the rack 9, and an electronic control unit ECU12; it is characterized in that: between the torque sensor 3 and the rack 9 A steering servo motor 27 is installed between the steering column 2, and the steering servo motor 27 includes a stator 4 and a rotor 5, wherein: the stator 4 of the steering servo motor is connected to the torque sensor 3, and the rotor 5 of the steering servo motor is connected to the rack 9 The upper steering column 6 is connected.
[0016] like figure 2 As shown, the variable transmission ratio control method of the electric power steering system...
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