АВТОМАТИЗАЦІЯ КОНТРОЛЮ ПАРАМЕТРІВ ЕЛЕКТРОДВИГУНА

Abstract

The technique of the motor control technical characteristics automation is developed in the article. The control of the technical characteristics is to determine and evaluate information on deviation of the actual values from the specified ones. Quality control occupies a special place at all stages of technical products production. Efficiency of production as a whole depends on perfection of quality control, its technical equipment and organization. Automation of the control procedure allows to prevent the production of products that do not meet the requirements of standards, specifications, approved samples, design and technological documentation, while eliminating errors caused by human factors, reduces time costs, provides high reliability of control and reduces the cost of manufacturing and maintenance. The article offers a diagram of the workplace for the study of the motor technical characteristics and a mathematical model for the motor control process automation. The process of control is to compare the actual parameters of the electric motor with the parameters of its reference model. The reference model is formed on the basis of the input signals and technical parameters of the power amplifier units, the electric motor and the angular velocity sensor corresponding to the design documentation. On the difference signals of the output parameter of the reference model and the controlled sample of the motor, a rejection procedure is performed. The electric motor is represented by the first-order aperiodic link transfer function. The motion of the connection "power amplifier – motor – angular velocity sensor" is modeled by a differential equation in continuous and discrete forms. For the implementation of the reference model, the equation of state is used in a discrete form, as all the control and diagnostic procedures in the test equipment are implemented by digital computing devices. The diagnostic feature of the connection functional state is the deviation of the output parameter of the controlled motor from the output parameter of the reference model. Deviation from the reference value in excess of the tolerance is an indirect diagnostic sign of the presence of destabilizing parameters of motor. The dependence of the deviation of the output parameter on the change of the coefficient of transformation кЕM and the time constant TEM is investigated.