Adaptive Control Of The Electromagnetic Vibration Feeder's Amplitude

Electromagnetic vibration feeder is one of the most popular material transfer devices which are widely used in automation manufacturing and assembly systems, because of its merits of high efficiency and directionality, working stability and credibility, its simple structure, small fiction, excellent commonality and so on. Recently, the main problems of electromagnetic vibration feeder are focus on how to increase its transportation efficiency, how to reduce its noisy and left its level of automation control, and especially how to control its amplitude precisely. For this purpose, an adaptive control system of electromagnetic vibration feeder's amplitude is designed in this paper.This paper concentrates on researching the adaptive control system of electromagnetic vibration feeder. So, the operating principle and material deliver principle are represented briefly, and the importance of amplitude is proved theoretically; Then based on the mechanics model of the feeder and some characteristics of electromagnet, the model of electromagnetic vibration feeder's amplitude is established; The schemes of the adaptive control system are designed, including a MIT model reference adaptive system and a sliding mode system. After, the hardware of the experiments is built, and the software of control system based on the MATLAB is introduced, including RTW concept, external mode and Real-time Windows Target programming process. And after the parameter estimation, the systems' correctness is proved by MATLAB Simulation. At last, the experiments of the amplitude control using the adaptive control systems are given, and the results of them are compared.The tests show that the stability of the amplitude has improved greatly, and the control performance and the grade of automatic have been greatly improved as well.