Patent ID: 6049075
Filing Date: 2000-04-11
Classification: G01D,G02B,G05B

Abstract:
A system for detecting a point of origin of a position sensor in a system for determining a position of an object member which is displaceable within a displacement range, said detecting system including a stop means in proximity to an end of said displacement range, said position sensor being operable to generate an output indicative of the position of said object member, said detecting system comprising:means, including a CPU and a pulse generator, for displacing said object member into an abutting relationship with said stop means;means, including said CPU and said pulse generator, for detecting a point of origin of said position sensor based on the position of said object member when abutting said stop means; andmeans, including said CPU, for setting the point of origin of said position sensor detected by the detecting means, wherein when detecting, said position sensor detects the position of said object member by means of a plurality of repetitive periodic waveforms,wherein said repetitive periodic waveforms are composed of sine waves and cosine waves.