Aluminum Electromagnetic Rapid Roll Of The Electrical Control System Design And Research In Electromagnetic Sensors

Design of a full functional and reliably running electromagnetic system is the key to realize the electromagnetic fast casting-rolling of aluminum strips. In this paper, some key technologies are researched such as the structure of the circuit, its system model, its microcomputer control and so on, so the following work is done.Firstly, the functional mechanism of electromagnetic casting-rolling and the influence of each electromagnetic parameters on the size of crystalline grain during the casting-rolling is analyzed, and the specific requirements of the electromagnetic control system is put forward; then the whole electromagnetic casting-rolling control scheme is established.Secondly, the system circuit is designed, during the designing process, the traditional SPWM frequency conversion technology is adopted, and the requirements of the electromagnetic fast casting-rolling in the system are fulfilled.Thirdly, the mathematic model of the system control is established, and its stability and dynamic property are analyzed, which provides some theoretic guidance to the system controls.Fourthly, according to the specific requirements of the system control, the two-level computer control scheme that combines industrial computer and single-chip microcomputer is established; and the master computer is programmed with assembly language and the slave computer is programmed with Delphi.Fifthly, the simulative experiment of industrial production is done in the lab, and the results of the experiment show that the system can fine the casting-rolling crystalline grain, and improve the casting-rolling quality.The research in this paper not only grounds the industrial production of electromagnetic fast casting-rolling, but also advances the theory in this area and promotes the development of aluminum machining technology.