| 摘要 |
<p>PURPOSE:To prevent a motor current from becoming excessive even when a resistance of an armature circuit is deviated from a specified value, so that no incongruous feeling is brought about even at the time of quick operation of a steering wheel. CONSTITUTION:When a driver operates a steering wheel 1, steering torque tauand a steering speed omegah of the steering wheel are detected by a steering torque detector 3 and a steering speed detector 4, respectively, and inputted into a steering assisting torque command circuit 5. From these values, a steering assisting command tauR is operated. In an electric current control circuit 6, a command vr of an impressed voltage applied to a motor is operated, using a motor current iM detected by a current detector 7 and the steering assisting torque command tauR. Based on this impressed voltage command Vr, voltage is applied to the motor from a motor driving device 8. With this constitution, a current feedback control system is completed.</p> |
