DEVELOPMENT OF AN DEVICE FOR SMALL POWER DIRECT CURRENT MOTORS TESTING WITH ELECTROMAGNETIC EXCITATION

In this paper are presenting the results of practical development, dedicated to the development of anexperimental device for the studying of the parameters and characteristics of low-power direct current motors.According to the results, a principal scheme for the testing of these machines based on the microcontroller wasdeveloped. Traditional methods for current and voltage measuring, rotation speed have been replaced by modernhigh-sensitivity sensors. Storing of testing parameters and characteristic’s and its further post processing isperformed on a semi-automatic mode with the help of personal computer. Also, software has been developed toimplement the required test program: no load mode, short circuit mode, etc. This device can provide us to dodifferent types of direct current motor mods: we can test it as motor mode as generator mode. It significantlyincreases its universality at small overall dimensions. The hardware of the experimental device is mobile, that is,with the help of one it is possible to provide testing of different motors which are situated in different places. Asdirect current regulators are use PWM which reduce the overall dimensions and increased the reliability of theexperimental device due to the rejection of massive rheostats. With the help of its device are investigated somepractical characteristics of small power direct current motor. These results are compare with theoretical results