Konokh I. Information technology for after-repair testing management of induction motors

Object of research - test processes of induction motor under polyharmonical supply; objective of thesis is improving of post-repair tests efficiency by development of information technology for intelligent control of instantaneous energy processes; methods of research are based on using the theories: parameters identification of induction motors, digital image data processing, automatic control and analytic engineering of controllers, fuzzy sets and fuzzy expert systems, mathematical simulation of machine-gated systems, object-oriented and visual programming; theoretical results: first developed method automatic forming of testing voltage harmonic composition, as opposed to existent, developed method optimize discrete spectrum of instantaneous power by using operated fuzzy system allows to improve efficiency and accuracy of obtaining equivalent circuit parameters by the energy balance method; improved computer fuzzy decision-making system controls dynamic current of induction motor loading, system differs by automatic control of tested example and losses determination by analysis of power balance, use of this system features provides transient processes capability and adequacy of dynamic and static loading; improved information technology of motor type identification by analysis of several perspective video images, the technology differs by using adaptive intensity variation of image points and selection object at random background, this allows to develop method of automatic reference geometrical dimensions retrieval of induction motors and determinate initial setting of testing control system; information technology of post-repair testing of induction motors got further development, this technology differs by polyharmonic supply forming and instantaneous energy processes analyzing by using fuzzy expert systems, that allows to automate and improve testing efficiency. Practical results - the structure and expert rules of fuzzy decision-making system of forming of test voltage; the data- and software of motor type visual recognition are designed, that required at automatic testing process; the algorithmic-, hard- and software of testing modes control are designed. Degree of application - main results are introduced on the manufacturing enterprise "Poltava Mining and Processing Plant", TOV VKP "KOTLOGAZ" and in the learning process at KrNU M. Ostrohradskyi. Scope (branch) of use - computer systems of automatic control of ac machines test systems.