Virtual test system for permanent—magnet DC motor
摘要
In order to obtain the primary parameters and operating characteristics of a DC motor without directlymeasuring its torque and rational speed, it is proposed to use a PC and a data acquisition card to acquire boththe dynamic and static data of armature current to establish the performance of a DC permanent-magnet motor.The accuracy and validity of this virtual test system proposed were verified by comparing the measurements madewith the system proposed with the measurements made with conventional torque meters. It is concluded from theresults of comparison that from the mathematic model established for the DC permant-magnet motors, both majorparameters and operating characteristics can be directly established for the DC motors without measuring theirtorques and rotational speed, a perfect on-line measurement and test system has been established for the DCpermanent-magnet motors using the theory of virtual test system. The system proposed features shorter test time,higher efficiency and lower cost.