At the same time,the principle of the positional measuring systems is briefly discussed and the application of the method of spatial forword intersection in the testing process of the testing system of.

Design of photoelectrical encoder position detection system based on FPGA;

High resolution digital velocity detection and dynamic position detection methods;

Sensorless rotor position detection of SRM based on voltage pulses to two phases;

Design of position detecting control circuit based on encoder sensor;

It has high practical engineering value for engineers to both choose and fix such position measure element.

A kind of interpolator and nonlinear revise technic are inducted into the numerical control position detecting system.

This paper introduces the components of switched reluctance motor drive and the requirements for power converter,presents the power conversion circuit and system control diagram,and displays the designed controlling ways,position detecting and current detecting methods.