Temperature control method based on slowest link

Abstract

The invention discloses a temperature control method based on a slowest link, and aims to solve the technical problems of insufficient temperature control precision and uniformity of a glass kiln in the prior art. The method comprises the following steps: acquiring a state-space equation and a parameter matrix of a glass kiln system by utilizing a system identification model; calculating a temperature estimation value according to the parameter matrix of the state-space equation, and obtaining a temperature pre-control signal according to the temperature estimation value; judging the slowest link of the glass kiln system according to the parameter matrix of the state-space equation, and calculating the control law of the glass kiln system based on the slowest link and the temperature pre-control signal; and controlling the temperature of the glass kiln system by using the control law. According to the invention, a high-precision and uniform glass kiln temperature control function can be realized.

Description

technical field [0001] The invention relates to a temperature control method based on the slowest link, and belongs to the technical field of glass kiln temperature control. Background technique [0002] For the cooling of glass in a single production mode, in theory, it is possible to design a cooling section that does not require auxiliary cooling or auxiliary heating devices through accurate calculations. However, with the fierce competition in the market, the requirements of modern glass production lines continue to increase. The cooling unit must not only meet the production of conventional glass, but also meet the production of ultra-thin and ultra-thick glass; it can not only meet the production of colorless transparent glass, It can also meet the production of colored glass. At the same time, the cooling of the glass liquid must be uniform, and once it is destroyed and homogenized, defects such as corrugated ribs will occur on the original plate. The traditional te...

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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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