METHOD OF PROCESSING ACCURACY ENHANCEMENT OF PHOTOELECTRIC POSITION TRANSDUCER SIGNALS
Journal Title: Metrology and Measurement Systems - Year 2005, Vol 12, Issue 3
Abstract
A method and the system for accuracy enhancement and motion direction discrimination of the photoelectric position transducer have been presented in the paper. In the system sinusoidal phase voltages, with the assumed phase shift equal to 36° have been generated. The voltages enable a frequency increment of 2.5 times in relation to basic signals from the transducer measurement bar. These two signals of increased frequency are rectangular, shifted mutually by 1/4 of a period, with the pulse-duty factor equal to 0.5. On the base of these signals it is possible to further increase the accuracy twofold, in the system of pulse counting and pulse sequence discrimination, with the use of the trigger method of its motion direction identification. Presented methods and systems make it possible to increase the transducer processing accuracy five times.
Authors and Affiliations
ZBIGNIEW SZCZEŚNIAK
Keywords
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