Patent ID: 7355361

Claim:
A motor control apparatus comprising: a motor drive part that supplies a motor current to the motor; a motor current detection part that detects said motor current; and a controller to which a motor current detected value from said motor current detection section is input, and which outputs a drive signal to said motor driving part; said controller comprising: a command value calculation section that calculates a motor current command value corresponding to a target value of said motor current; and an abnormality determination section that generates an abnormality determination signal when a difference between said motor current detection value and said motor current command value indicates a value larger than or equal to a predetermined determination threshold; wherein said motor current is controlled in a feedback manner such that said motor current detection value is made to coincide with said motor current command value; said controller further comprises a regeneration operation determination section that determines whether said motor is in a regeneration operation state; and when it is determined that said motor is in a regeneration operation, said controller sets said determination threshold to a value larger than that during a power running operation of said motor.