Abstract: A drive mechanism control system and method of operation are provided. The system includes a motor for rotating an output shaft about a primary central axis. The system also includes a powered drive mechanism including a rotatable component attached to the output shaft. The system also includes a coil and a target attached to the rotatable component and configured to have a fluctuating inductive coupling with the coil. The system additionally includes an electronic control unit coupled to the coil and configured to generate a magnetic field adjacent to the target using the coil. The electronic control unit senses a variation of the magnetic field due to the fluctuating inductive coupling with the target as the rotatable component is rotated. The electronic control unit is also configured to determine an absolute position of the rotatable component based on sensing the variation of the magnetic field.

Abstract: A control system and method for controlling a brushless electric motor of a power operated actuator of a closure panel of a vehicle are provided. The control system includes a vector control system coupled to the motor to receive an estimated position of a rotor of the motor and a target torque current based on an actual angular velocity of the rotor. The vector control system also determines an alpha stationary reference frame voltage and a beta stationary reference frame voltage based on the target torque current and phase currents from the brushless electric motor in response to a Hall sensor trigger. The vector control system maintains the alpha stationary reference frame voltage and a beta stationary reference frame voltage and outputs a pulse width modulation signals to the motor based on the alpha stationary reference frame voltage and the beta stationary reference frame voltage.