Patent ID: 6710562
Filing Date: 2004-03-23
Classification: E05F,E05Y,H02H,H02K

Abstract:
A method of controlling a motor-driven adjusting device for an adjustment member in a motor vehicle by means of an electronic control device, comprising:detecting and evaluating measured variables or signals correlated with the dynamics of the adjusting device, and if necessary with a position of the adjustment member in order to generate control signals; controlling a rate of adjustment of the adjustment member to a constant value based on a frequency of a rotating field of a motor drive unit constructed as a synchronous motor; and setting a load angle with respect to a tilt angle to provide drive unit torque for adjustment movement of the adjustment member, wherein the load angle is a phase displacement between an exciting field and the rotating field of the synchronous motor, and wherein the tilt angle is a load angle at which torque reaches a maximum.