A method and apparatus for heating conductor blanks based on closed-loop control

Abstract

The invention discloses a method and equipment for heating a conductor blank based on closed-loop control, which is applied to a high-temperature superconducting direct current induction heating system. The method includes: determining the magnetic field adaptation adjustment according to the target axial temperature distribution of the conductor blank A control command set of the servo motor in the unit; based on the control command set, the servo motor is sequentially controlled to rotate, so that the magnetic field adaptation unit reaches the position distribution corresponding to the target axial temperature distribution; the conductor blank is obtained The measured axial temperature distribution of the material after heating under the position distribution; closed-loop control is performed according to the target axial temperature distribution and the measured axial temperature distribution, so that the measured axial temperature distribution reaches the preset heating accuracy , so that in the process of heating the conductor blank according to the specified axial temperature distribution target, the effective control of the heating temperature error is realized, and the temperature control accuracy is improved.

Description

technical field [0001] The present application relates to the technical field of high-temperature superconducting direct current induction heating, and more specifically, relates to a method and equipment for heating conductor blanks based on closed-loop control. Background technique [0002] The current high-temperature superconducting DC induction heating technology usually generates a strong magnetic field by direct current through a superconducting magnet. An appropriate magnetic flux concentrator is selected to concentrate the magnetic field to the working air gap of induction heating, and the motor drives the conductor blank in the working air gap. Middle rotation (that is, the conductor cuts the magnetic field line), so that the eddy current heat generation phenomenon is formed in the blank workpiece, and the effect of temperature rise is achieved. Different from the traditional electromagnetic induction heating technology, the internal heating efficiency of the bille...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a method for heating conductor blanks based on closed-loop control to solve the technical problem that the heating temperature error cannot be effectively controlled when the axial temperature distribution of the conductor blanks is regulated in the prior art. The method is applied to high-temperature superconductors In the DC induction heating system, the heating system is provided with multiple sets of one-to-one corresponding magnetic field adaptation adjustment units and magnetic field adaptation units, and the method includes:

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