PROBLEM TO BE SOLVED: To provide a steering device capable of suitably compensating for a voltage command value regardless of a variation in power source voltage.SOLUTION: An EPS comprises a steering mechanism for steering a steered wheel based on steering of a steering wheel, a motor being a generation source of assist force and a battery for supplying voltage to the motor. The EPS comprises a voltage sensor for detecting power source voltage Vbatt, a steering sensor for detecting a steering angle θs and a motor control signal generation part for generating a motor control signal based on a q-axis voltage command value Vq* by arithmetically operating the q-axis voltage command value Vq* for generating the assist force in the motor. The EPS comprises a steering angular velocity limit part 61 for deriving a compensation amount ΔVq by arithmetically operating a power source compensation component ΔVqcomp based on the power source voltage Vbatt when an absolute value of the steering angle θs is a predetermined steering angle or more in the vicinity of a maximum steering angle by arithmetically operating the compensation amount ΔVq for compensating for the q-axis voltage command value Vq*.SELECTED DRAWING: Figure 3
【課題】電源電圧の変動に関係なく電圧指令値を好適に補償することのできるステアリング装置を提供する。【解決手段】EPSは、ステアリングホイールの操舵に基づき転舵輪を転舵させる操舵機構と、アシスト力の発生源たるモータと、モータに電圧を供給するバッテリとを備える。また、EPSは、電源電圧Vbattを検出する電圧センサと、操舵角θsを検出するステアリングセンサと、モータにアシスト力を発生させるべくq軸電圧指令値Vq*を演算し、q軸電圧指令値Vq*に基づきモータ制御信号を生成するモータ制御信号生成部とを備える。そして、EPSは、q軸電圧指令値Vq*を補償する補償量ΔVqを演算し、操舵角θsの絶対値が最大舵角近傍の所定操舵角以上である場合、電源電圧Vbattに基づいて電源補償成分ΔVqcompを演算することにより補償量ΔVqを導出する操舵角速度制限部61を備えている。【選択図】図3
STEERING DEVICE
ステアリング装置
2016-09-29
Patent
Elektronische Ressource
Japanisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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