| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power steering device capable of performing steering assistance properly even when a power voltage varies suddenly. SOLUTION: This device is structured so that, when a sudden variation in power voltage is detected (YES in S1), the soft filtering of motor current signal is prohibited (S2). Also the target voltage value V0 of a motor to be set is fixed at a value obtained immediately before sudden variation (S3). Namely, the motor driving control according to a motor current is prohibited. In addition, when the measurement of a current convergent predicted time 10 is started (S4) and then completed (YES in S5), the prohibited condition of the soft filtering and the fixed condition of the target voltage value V0 are cancelled (S6).</p> |
