Patent ID: 9075401
Filing Date: 2015-07-07
Classification: G05B

Abstract:
1. A method of correcting a sensor configured to detect a detection object and generate at least one detection signal, the method comprising: rotating the detection object or the sensor from an initial position in a first direction to generate a first homing signal when the detection object is located at a first homing position rotating in the first direction; rotating the detection object or the sensor from the initial position in a second direction to generate a second homing signal when the detection object is located at a second homing position rotating in the second direction, the second direction being opposite to the first direction and the second homing position being opposite from the first homing position with respect to a center portion of the sensor in a rotation direction; determining a first time duration and a second time duration according to the first and second homing signals, respectively; determining a homing-signal generation time difference corresponding to a time difference between the first and second time duration; and correcting a homing-signal generation time of the sensor by using the determined homing-signal generation time difference, wherein the first and second homing positions correspond to positions of the detection object and the sensor overlapping each other.