Adaptive Control
Closed-loop identification of infrared oven in HDD manufacturing process
CCDC'09 Proceedings of the 21st annual international conference on Chinese control and decision conference
Temperature control for reheating furnace walking hearth type in heating curve up process
ICOSSSE'10 Proceedings of the 9th WSEAS international conference on System science and simulation in engineering
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Nowadays, the electromagnetic ovens are used for heating the component assembly of electronic manufacturing. The control systems of the electromagnetic ovens are feedback control system and PID controller are used to control their temperature. This process is an importance process in electronics manufacturing. The problems of the electromagnetic oven are the accuracy of the temperature response when they are used in the long period of time. Examples of their problems are overshoot and high value of delay time. When the over rising of temperature occur, it leads to produce damaging. The over temperature problem is suspected that be can taken from physical changing of the electromagnetic oven. Because of this reason, PID controller parameters are not appropriate with a new condition. Therefore, the electromagnetic oven control system will have low efficiency. This paper presents the control method for any electromagnetic oven by using Model Reference Adaptive System (MRAS) to adjust the parameters of PI controller. An approximated transfer function of the electromagnetic oven obtained from closed-loop data by using nonlinear least squares method and the optimization of PID controller design is demonstrated via gradient descent method. The experimental and simulation results showed good performance in actual operations.