Design of transient characteristic measuring system for switched reluctance drive based on LabVIEW

In this paper, a transient characteristic measuring system for switched reluctance motor (SRM) based on virtual instrument technology and the multi-function data acquisition card PCI-6250 is developed. Firstly, the system hardware is built up. The transient data including phase current and voltage, rotor angle position are collected by the data acquisition card, and transmitted to a computer by PCIBUS. Secondly, the system software is designed on the bases of LabVIEW and the data configuration program MAX. The software of system deals with the collected data and calculates the instantaneous torque. The transient characteristics of SRM including torque, speed, phase voltage, and phase current can be measured in real time, and displayed and saved simultaneously. Finally, the measurement system is applied to the testing of a prototype motor, and the results are helpful to the analysis and improvement of the SRM control system.