A temperature control method based on the slowest link

Abstract

The invention discloses a temperature control method based on the slowest link, aiming at solving the technical problems of insufficient temperature control precision and uniformity of a glass kiln in the prior art. It includes: using the system identification model to obtain the state space equation of the glass kiln system and its parameter matrix; calculating the temperature prediction value according to the parameter matrix of the state space equation, and obtaining the temperature pre-control signal according to the temperature prediction value; according to the state space equation The parameter matrix determines the slowest link of the glass kiln system, and calculates the control law of the glass kiln system based on the slowest link and the temperature pre-control signal; the control law is used to control the temperature of the glass kiln system. The invention can realize the high-precision and uniform temperature control function of the glass kiln.

Description

technical field [0001] The invention relates to a temperature control method based on the slowest link, and belongs to the technical field of temperature control of glass kilns. Background technique [0002] For the cooling of glass in a single production mode, it is theoretically possible to design a cooling section that does not require auxiliary cooling or auxiliary heating devices through precise calculations. However, with the fierce market competition, the requirements of modern glass production lines continue to increase. The cooling section needs to meet the production of both conventional glass and ultra-thin and ultra-thick glass; it can not only meet the production of colorless and transparent glass, It can also meet the production of colored glass. At the same time, the cooling of the molten glass must be uniform. Once the homogenization is destroyed, the original plate will have defects such as waves. The traditional temperature control system can no longer me...

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Problems solved by technology

[0003] In order to solve the problem of insufficient temperature control accuracy and uniformity of the glass kiln in the prior art, the present invention proposes a temperature control method based on the slowest link, which uses the estimated temperature value for temperature control, and analyzes the slowest link in the glass kiln system. Slow link, so that other links of the controlled temperature can track the slowest response link, so as to realize high-precision and uniform temperature control function

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