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Constant-volume casting control method and system for tilting type casting machine

A control method and control system technology, which is applied in the field of quantitative casting control of tilting casting machines, can solve problems such as low control accuracy and difficulty in establishing tracking models, and achieve the goal of avoiding mathematical modeling and hydrodynamic analysis processes and simplifying the burden Effect

Active Publication Date: 2015-10-28
湖南华民控股集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the objectives of the present invention is to provide a quantitative casting control method and system for a tilting casting machine, so as to solve the technical problems in the prior art that it is difficult to establish a tracking model and the control accuracy is not high

Method used

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  • Constant-volume casting control method and system for tilting type casting machine
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  • Constant-volume casting control method and system for tilting type casting machine

Examples

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Embodiment 1

[0049] An embodiment of the present invention provides a quantitative casting control method for a tilting casting machine, including:

[0050] S100, calculating the pouring weight of the melt poured into the ladle by the electric furnace;

[0051] S200. Obtain a casting weight deviation according to the casting weight and the set casting weight, and calculate the rate of change of the casting weight deviation;

[0052] S300. Search a fuzzy control table according to the casting weight deviation and the rate of change of the casting weight deviation to obtain a control signal.

[0053] The display control method provided by the present invention will be described in detail below.

[0054] First, S100 is introduced, the step of calculating the pouring weight of the melt poured into the ladle by the electric furnace.

[0055] In the embodiment of the present invention, the calculation of casting weight includes two situations. in,

[0056] The first case is the inner loop fe...

Embodiment 2

[0101] In order to further embody the superiority of the quantitative casting control method for the tilting casting machine provided by the embodiment of the present invention, the automatic casting control system with 120 metal grinding balls will be described in detail below.

[0102] Such as figure 2 As shown, according to the process requirements, the 120 metal grinding ball casting system needs to cast 35kg per package, the deviation is within ±0.5kg, and the casting time should not exceed 40 seconds.

[0103] According to the control method described above, the casting weight deviation, the rate of change of the casting weight deviation and the value range of the control signal u are firstly determined.

[0104]When the casting has not yet started, the casting weight deviation is just the lower limit -35kg. Since the casting weight deviation is required to be within ±0.5kg, the upper limit of the casting weight deviation e should be +0.5kg in theory, but in some cases ...

Embodiment 3

[0141] Further reflecting the superiority of the quantitative casting control method for the tilting casting machine provided by the embodiment of the present invention, the embodiment of the present invention also provides a quantitative casting control system for the tilting casting machine, such as figure 2 shown, including:

[0142] Calculation module 100, used for calculating the pouring weight of the melt poured into the ladle by the electric furnace;

[0143] The comparison module 200 is used to obtain the casting weight deviation according to the casting weight and the set casting weight, and calculate the rate of change of the casting weight deviation;

[0144] The fuzzy controller 300 is used to search the fuzzy control table to obtain the control signal according to the casting weight deviation and the rate of change of the casting weight deviation.

[0145] Understandably, figure 2 Proportional valve, oil pump, furnace body, ladle, etc. are commonly used device...

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Abstract

The invention relates to a constant-volume casting control method and system for a tilting type casting machine. The control method comprises the following steps: calculating the casting weight of melts cast to a casting ladle by an electric furnace; according to the casting weight and a set casting weight, obtaining a casting weight deviation, and calculating the rate of change of the casting weight deviation; according to the casting weight deviation and the rate of change of the casting weight deviation, looking up a fuzzy control table and obtaining a control signal. The control method provided by the embodiment of the invention can avoid the mathematical modeling and hydromechanics analysis process for a complex controlled object, so that the burden of a controller is simpleified.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a quantitative casting control method and system for a tilting casting machine. Background technique [0002] Casting is a metal processing and forming technology widely used in modern industry. At present, some factories in our country still adopt the manual casting method. Under this production method, the labor intensity of workers is high and the safety is not high. In addition, the castings produced also have defects such as low precision and high scrap rate. Therefore, it is necessary to effectively control the casting process in order to achieve the purpose of improving the quality of castings. [0003] In order to realize effective control of the casting process, there is a tilting casting machine in the prior art. Such as figure 1 As shown, the tilting casting machine includes a support 100 , an electric furnace 200 and an oil pump 300 . The electric furnace...

Claims

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Application Information

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IPC IPC(8): B22D37/00
Inventor 任立军汤哲陈华荣翟晓巍徐宣珍
Owner 湖南华民控股集团股份有限公司
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