Device and method for determining position information using accelerometers on a rotating component

摘要

An exemplary device for determining a position of a component moved by operation of a motor includes a rotating member that rotates responsive to operation of the motor. At least one accelerometer is supported on the rotating member. The accelerometer provides at least one of an indication of a tangential force that is tangential to a direction of rotation of the rotating member and a radial force that is perpendicular to the tangential force. A controller determines the position of the component based upon the force indication from the accelerometer.

主权项

1. A device for determining a position of a component moved by operation of a motor, the device comprising:
a rotating member that rotates responsive to operation of the motor; at least one accelerometer supported on the rotating member, the accelerometer providing an indication of at least one of a tangential force that is tangential to a direction of rotation of the rotating member and a radial force that is perpendicular to the tangential force; and a controller that determines a position of the component based on the at least one force indication from the at least one accelerometer; wherein
the motor is moveable in a rotary direction that is distinct from rotation of the rotating member,the device comprises a sensor that provides an indication of an amount of motor movement in the rotary direction and
the controller uses the indication of the amount of motor movement to cancel out any effect of the motor movement on the determination of the position of the component.