Patent ID: 7075259
Filing Date: 2006-07-11
Classification: F16H,H02P

Abstract:
1. A motor control apparatus for controlling an electric motor to apply motive force for changing a position of a control object from a current position to a target position, comprising first detection means for producing a first detection signal that is indicative of said current position of said control object, and second detection means for producing a second detection signal that is indicative of an angular position of a drive shaft of said motor, load estimation means for estimating a condition of a load that is currently being applied to said motor, and target rotation speed adjustment means for adjusting a target value of rotation speed of said motor in accordance with an estimation result obtained by said load estimation means; wherein said load estimation means estimates said load condition based upon a rate of change of a specific one of said first and second detection signals during said changing of position of said control object.