Study on motor test system based on PLC control technology

Author(s): Weimin Han

Motors have developed by leaps and bounds, which has resulted in an increasingly widening range of motors. As a research emphasis of motors, the measurement of motor performance parameters has developed dramatically in its measurement scope, utilized more complex and bigger test systems as motors are changing rapidly, and adopted digital technology and information technology, all of which could greatly enhance the maintainability and efficiency of the motor system. The combination of computer technology and PLC control technology could effectively and rapidly test the present motor’s parameters and performance; meanwhile it could also modify the software to test other parameters at any time according to customer’s demands. Thanks to PLC and computer’s excellent software and hardware and data processing ability, the test system’s efficiency were markedly enhanced. Therefore it was of great significance of practice and research to study the test system based on these core technologies. This study adopted modular design, usually used in system design, to divide the system’s functions into modules, thus revealing the design concepts of the complex system. This study adopted Siemens’ s CPU as the PLC control system core to design and upgrade software and hardware, which included CPU, I/O pot, and communication module, etc. based on the current situation of motor measurement. Meanwhile, modular design concepts were applied to system programs. The software system showed great operating efficiency and good maintainability and readability.

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