Circuit Design and Software Compensation of Inductosyn Angle Measuring System

In order to implement a high-speed and high-accuracy motor scanning control system,an angle measuring system is developed based on absolute round inductosyn and good-performing tracking resolver-to-digital converter(RDC).It consists of exciter circuits,signal conditioning circuits,RDC circuits and digital processing circuits.In order to improve the measurement accuracy and protect the output signal from the system noise,low-noise analog circuits is designed.The means of absolute angle data fusion and error correcting is studied and implemented using algorithm.Experiment results show that the system greatly reduced noise and output resolution is 0.2″.