Synchronous motor with an electronic control device for adjusting devices in motor vehicles and method for controlling them
AssigneeBrose Fahrzeugteile GmbH & Co. KG
InventorsRoland Kalb, Craig Kinnell
Life of this patent
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Abstract
A method for controlling a synchronous motor driven adjustment device is used in motor vehicles by means of an electronic control, especially for controlling adjustment devices with an anti-trap protection and/or with an excess force limitation. The method includes evaluating variables correlating to the dynamics of the adjusting device or the position of the adjustment member and generating control signals based on the variables, controlling the adjustment rate of the adjustment member to a constant value, and setting a phase displacement between an exciting field and a rotating field of the motor to provide torque to the drive unit based on the load angle at which the torque reaches a maximum.
Claims17
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.
Dependencies are inferred from the claim text.