The synchronizer is often used for the measurement of axis-angle because of its simple structure

reliability and high precision.The module used to measure the axis-angle of synchronizer now is complex and inconvenient for use and expensive.A method is introduced to get the axis-angle that the synchronizer is excited by a sin wave signal obtained by filtering and amplifying a square wave signal produced by a single-chip computer and the output induced E.M.F from the winding are also measured by the single-chip computer.The circuit of the designed axis-angle measuring module based on this method is very simple and reliable.The measured result is sent out by RS232 interface

making use easy.It is of high precision and high practical value.