Coke oven collecting main pressure intelligent decoupling control method

A technology of collecting pipe pressure and decoupling control, applied in the direction of adaptive control, general control system, control/regulation system, etc. Control, eliminate coupling effects, reduce production costs

Inactive Publication Date: 2008-04-09
CENT SOUTH UNIV
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Problems solved by technology

[0004] In order to overcome the technical problems of high labor intensity, low control precision and large pressure fluctuations of the gas collecting pipe when manual adjustment of the butterfly valve is used for the...

Method used

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  • Coke oven collecting main pressure intelligent decoupling control method
  • Coke oven collecting main pressure intelligent decoupling control method
  • Coke oven collecting main pressure intelligent decoupling control method

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Embodiment Construction

[0019] The intelligent decoupling control process of coke oven gas collecting pipe pressure in the present invention is as follows: In the present invention, there are 4 coke ovens No. 1-4. First detect the actual pressure P of the coke oven gas collector of No. 1-4 1 '-P 4 ’, and then the pressure P of each coke oven gas collector 1 '-P 4 ’ and pressure given value P 1 -P 4 The deviation and the deviation change rate are used as the input of each coke oven gas collecting pipe pressure fuzzy controller, and the control increment U of each single output is calculated by each coke oven gas collecting pipe fuzzy controller 1 '-U 4 ’, and then use the decoupled controller pair within the group to control the increment U 1 '-U 4 ′ Decoupling within the group to obtain the correction value v of the control increment 1 '-v 4 ′, on this basis, use the inter-group intelligent decoupling controller to compensate the control correction calculated by the intra-group intelligent d...

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Abstract

The invention discloses a method of controlling pressure intelligent decoupling for a gas collecting pip of a coke oven. The invention comprises the following steps: the pressure of the gas collecting pipe of each coke oven is inspected; the deviation and deviation variance ratio of the inspected value and the pressure given value are calculated; each single pipe fuzzy controller is able to obtain each single output control increment according to the calculation of the deviation and the deviation variance ratio; an intragroup decoupling controller is applied to decouple the control increment inside the group to obtain the correction quantity of the control increment; an intergroup intelligent decoupling controller compensates the correction quantity calculated by the intragroup decoupling controller and then converses into a control output of opening increment of each branch pipe butterfly valve; a butterfly valve expert controller turns the butterfly valve opening increment into the actual opening output of the butterfly valve and then is assigned and corrected on the butterfly valve of each branch pipe. By utilizing the technology of combining the fuzzy control and the expert control, the invention designs the decoupling algorithm, eliminates the coupling effect on the pressure of the gas collecting pipe of the coke oven and realizes the automatic control of the pressure of the single-seat gas collecting pipe of the coke oven.

Description

technical field [0001] The invention relates to an intelligent decoupling control method for coke oven gas collecting pipe pressure. Background technique [0002] As an important basic raw material and strategic material for the development of my country's national economy and national defense and military industry, steel has been widely used in various industries such as machinery, electronics, building materials, transportation, aerospace, aviation, national defense and military industry, and plays a very important role in the development of the national economy. In iron and steel enterprises, gas collector pressure is an important parameter in coke oven production, and its stability directly affects gas quality, coke oven life and production environment. When the pressure of the gas collecting pipe is too low, the air will enter the coke oven body from the furnace door, furnace cover and other channels, resulting in coke burning, increased ash content, and decreased quali...

Claims

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Application Information

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IPC IPC(8): G05B13/02
Inventor 吴敏曹卫华雷琪刘建群陈炜阎瑾
Owner CENT SOUTH UNIV
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