A steering system includes a steering mechanism that turns steered wheels based on steering of a steering wheel, a motor that is a source of an assist force, and a battery that supplies a voltage to the motor. The system includes a voltage sensor that detects a power supply voltage Vbatt, a steering sensor that detects a steering angle ¸s, and a motor control signal generation circuit that calculates a q-axis voltage command value Vq* to allow the motor to generate the assist force and that generates a motor control signal based on the q-axis voltage command value Vq*. The system includes a steering-angular-velocity limiting circuit 61 that calculates a compensation amount Vq for compensation for the q-axis voltage command value Vq* and that derives the compensation amount Vq by calculating a power supply compensation component Vqcomp based on the power supply voltage Vbatt when the absolute value of the steering angle ¸s is equal to or larger than a predetermined steering angle close to a maximum steering angle.
STEERING SYSTEM
LENKSYSTEM
SYSTÈME DE DIRECTION
2016-09-21
Patent
Elektronische Ressource
Englisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
Steering device and steering system including steering devices
Europäisches Patentamt | 2023
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