Angular position digital measuring equipment for rotating shaft - has toothed gear pickoff and reference pickoff to determine position to within one degree of arc

摘要

An angular position digital equipment is used to determine the position of a shaft to within one degree of arc. The equipment, has a pickoff (9) and a toothed wheel (10) fitted to the rotating shaft. An amplifier (11) and a pulse unit (12) are used to count the pulses during an angular rotation of the wheel (10). Another pickoff (15) is used to generate a reference signal corresponding to a reference position of the shaft. The pickoffs (9,15) are connected to a counter (14) and AND gates (6,8,13). A clock (1) and multiplicators (2,3) are also connected to two (6,8) of the AND gates. A counter (7) and a zero decoder (17) are used to determine the angular position from a reference point.