Metrological assurance of the characteristics of electric drives at the design stage

The article is devoted to the study of determining the quality indicators of the controlled electric drives that determine the characteristics of metal-cutting machine tools, robocars, industrial robots and other automatic equipment. The main trends in the development of electric drives are highlighted. Special attention is paid to the technical requirements for the controlled electric drives. A mathematical model of an electric drive with a valve motor is presented, using which it is possible to determine the main metrological characteristics of the electric drive specified in GOST even at the design stage, using a mathematical device. The use of the presented mathematical model makes it possible to make changes to the planned operating modes of the electric drive, select the parameters of the speed and current regulators, and study the influence of non-linearities. The model reflects all the features of the circuit design of the regulators and the power amplifier. The work presents tachograms for determining the coefficients of uneven rotation and frequency bandwidth. The analysis of the obtained tachograms makes it possible to theoretically determine the range of speed control of the electric drive. The results of an experimental study of a test sample of the controlled electric drive under consideration are presented, illustrating the correctness of the calculations performed.