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Temperature control method for glass tank

A control method and technology for glass pools, which are used in electric temperature control, glass furnace equipment, glass manufacturing equipment, etc., can solve the problem of difficult maintenance of control loops, and achieve the effect of eliminating inertial upshoot or inertial drop.

Inactive Publication Date: 2012-10-31
IRICO DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Control loops are difficult to maintain

Method used

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  • Temperature control method for glass tank

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Embodiment Construction

[0011] Such as figure 1 As shown, the present invention includes a signal processing module (compiled by computer script) and a PID control module. The signal processing module actually measures the input temperature signal A, the control range B and the control target value SP. The signal processing module performs related simulation calculations on the above signal values ​​and then outputs the control signal F. The signal F is connected to the standard PID module. After the PID module is processed, it outputs the final control signal OutPut to participate in the external drive control.

[0012] The specific working principle is:

[0013] The signal processing module compares and calculates the signal A sent by the detection device with the control target value SP.

[0014] If A>SP+B or A

[0015] If A>SP-B and A

[0016] After such processing, the control output of PID wil...

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Abstract

Aiming at overcoming the defects that precise values of control parameters are difficult to determine, and when a detector has fluctuation, a control loop fluctuates back and forth and is difficult to be in a stable state, the invention puts forward a temperature control method for a glass tank. The temperature control method comprises the following steps that: a distributed control system (DCS) programming tool is adopted and a proportion-integration-differentiation (PID) control module in a DCS is adopted and combined with computer script technology functions of computer to expand the functions of the PID module in the DCS, wherein the expanded function is that externally-connected detection signals of the PID module in a control loop is subjected to secondary processing by the computer script technology; and after the PID control loop is within a target control range, the output of the PID control loop is kept to be constant to eliminate the inertial ascending or descending of the control loop. By adjusting a control target value an a control range, the precise control can be realized.

Description

Technical field: [0001] The invention relates to a method for controlling the temperature of a glass pool furnace, in particular to a control method for a photovoltaic glass pool furnace and a TFT-LCD glass pool furnace. Background technique: [0002] Traditional cathode ray display devices have gradually stepped out of the market, and flat panel display devices have become more and more popular in various fields of modern people's lives. The demand for flat-panel display devices is also increasing, and enterprises engaged in flat-panel display devices and flat glass for light energy are rapidly established. At present, the temperature control method of the glass pool furnace generally adopts the traditional PID control in the field of automatic control. This method is easy to implement, but it is not easy to determine the precise value of the control parameters of P, I, and D. Moreover, when the detection device fluctuates, the control loop fluctuates back and forth and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/19C03B5/16
Inventor 陈小利
Owner IRICO DISPLAY DEVICES