Fuzzy-PID compound control system in sintered mixing water supply

A compound control and controller technology, applied in the field of Fuzzy-PID compound control system, can solve problems such as weak anti-interference ability, poor precision, and unsatisfactory accuracy, achieve good economic and social benefits, and improve sintering machine Speed, sintering negative pressure reduction effect

Inactive Publication Date: 2009-01-21
NORTHERN ENG & TECH CORP MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the PID control algorithm has a simple principle, but the accuracy is not satisfactory, so the accuracy of the control system is poor, the anti-interference ability is weak, and it is easy to frequently adjust the opening of the valve.

Method used

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  • Fuzzy-PID compound control system in sintered mixing water supply
  • Fuzzy-PID compound control system in sintered mixing water supply
  • Fuzzy-PID compound control system in sintered mixing water supply

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Embodiment Construction

[0038] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0039] Such as figure 1 , 2 As shown, the Fuzzy-PID composite control system of the sintering and mixing water of the present invention includes a PID control strategy, a detection instrument, and a control device, and is characterized in that the control flow of the Fuzzy-PID composite control system is:

[0040] 1) System data initialization,

[0041] 2) Set the difference between the valve opening 1 and the feedback value 6 as the deviation |e|

[0042] 3) Determine whether |e|=|e 0 |, |e| is the deviation signal, |e 0 |It is the given deviation when switching between Fuzzy and PID control.

[0043] 4) When |e|≤|e 0 When |, adopt PID control strategy 2,

[0044] 5) When |e|>|e 0 When |, adopt Fuzzy control strategy 3,

[0045] 6) When the PID control strategy switches to the Fuzzy control strategy, the output 5 of the regulator...

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Abstract

The invention relates to a sintering mixing water-feeding checking and controlling system, in particular to a Fuzzy-PID compound control system for sintering mixing water-feeding, which comprise a PID control strategy, a check instrument and a controller, wherein the control process of the Fuzzy-PID compound control system comprises: initializing the system data, setting a valve opening degree and a feedback valve opening degree error |e|, judging if |e|=|e0|, when |e|<=|e0|, using the PID control strategy, when |e|>=|e0|, using Fuzzy control strategy, when the PID control is switched to the Fuzzy control, the output of the adjuster holds the output value UPID under the PID control strategy until the Fuzzy controller output |UF|>=|UPID|, when the Fuzzy control is switched to the PID control, the output of the adjuster holds the output value UF under the Fuzzy control strategy until the PID controller output |UPID|<=|UF|. The invention improves the permeability of sintered mixture, improves the thickness of sintered layer, the speed of sintering machines and reduces sintering negative pressure.

Description

technical field [0001] The invention relates to a sintering mixing water adding detection and control system, in particular to a Fuzzy-PID composite control system in sintering mixing adding water. Background technique [0002] As we all know, adding water to sintering mixture can determine the quality, physical properties and chemical composition of sintering, and has a profound impact on the quality of blast furnace molten iron and ironmaking efficiency. The control of adding water to the mixture in sintering production control is an important link. The amount of water not only affects the vertical sintering degree of the sintering process, but also affects the yield and productivity of sintered ore. The mixture has a high moisture content, although the sintering speed is fast, but the finished product rate is low and the amount of ore returned is large; the mixture moisture is small, the sintering speed is slow, the productivity is low, and various consumptions increase. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/02
Inventor 张斌王波李明峰边文
Owner NORTHERN ENG & TECH CORP MCC
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