Model-free adaptive rolling mill pouring liquid level control method, device and storage medium
A model-free self-adaptive and liquid level control technology, which is applied in the field of computer-readable storage media and rolling mill casting liquid level control devices, can solve the problems of low liquid level control accuracy, improve product quality, avoid adjustment errors, and improve adjustment The effect of precision
Active Publication Date: 2021-07-30
SHANGHAI ZHONGTIAN ALUMINUM WIRE +1
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Problems solved by technology
[0003] In view of the above, it is necessary to propose a method for controlling casting liquid level of rolling mill based on model-free adaptive algorithm, a device for controlling casting liquid level of rolling mill and storage medium based on model-free adaptive algorithm, which can solve the problem of existing control technology on the casting process of rolling mill. The problem of low precision of medium level control
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[0061] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0062] In the following description, many specific details are set forth in order to fully understand the present invention, and the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in th...
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A method for controlling the casting liquid level of a rolling mill based on a model-free adaptive algorithm, comprising: obtaining the current liquid level data in the casting mechanism; The expected value of the liquid level at the next moment in the casting mechanism; the displacement increment of the screw rod at the last moment and the expected value of the liquid level at the next moment are according to the formula (1 ) to calculate the pseudo partial derivative at the current moment; the pseudo partial derivative at the current moment, the current liquid level data and the expected value of the liquid level at the next moment are calculated according to formula (2) to obtain the target displacement increment of the screw rod at the current moment , controlling the moving motor to drive the screw to rotate the target displacement increment. The invention also provides a rolling mill casting liquid level control device and a storage medium based on a model-free self-adaptive algorithm. Through the present invention, the precision of liquid level control can be improved.
Description
technical field [0001] The invention relates to the technical field of automatic control, in particular to a method for controlling casting liquid level of a rolling mill based on a model-free adaptive algorithm, a device for controlling the casting liquid level of a rolling mill based on a model-free adaptive algorithm, and a computer-readable storage medium. Background technique [0002] The existing control method of casting liquid level in rolling mill is processed by PID control technology, and the control effect of PID control technology is not ideal when dealing with the system control problems with strong nonlinearity, time variation and periodic disturbance. The rolling mill casting process is a time-varying process. Affected by factors such as air cooling and impurities, a crystalline film will form on the surface of the liquid metal during the flow and casting process of the metal liquid, making the flow rate of the liquid lower and lower. Therefore, the accuracy ...
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IPC IPC(8): B22D37/00
CPCB22D37/00
Inventor 洪小红王鑫寓李十军李亚鹏徐缪华
Owner SHANGHAI ZHONGTIAN ALUMINUM WIRE