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Self-tuning expert control method of burning trough point parameter based on working condition recognition

A technology of parameter self-tuning and sintering end point, which is applied in the direction of self-adaptive control, general control system, control/adjustment system, etc., can solve the problems of low material level in the mixing bin, too fast machine speed, and low sinter temperature, and achieve Ensure smooth operation, improve work efficiency, and improve the effect of anti-interference

Active Publication Date: 2010-12-08
CENT SOUTH UNIV
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Problems solved by technology

The actual production shows that because there are many interference factors in the control of BTP, it is far from enough to stabilize the BTP only by adjusting the operating parameters based on the BRP. Insufficient; the machine speed is too fast or too slow, which will cause the material level of the mixing bin to be too low or too high, which is not conducive to the smooth operation of the sintering process

Method used

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  • Self-tuning expert control method of burning trough point parameter based on working condition recognition
  • Self-tuning expert control method of burning trough point parameter based on working condition recognition
  • Self-tuning expert control method of burning trough point parameter based on working condition recognition

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Embodiment 1

[0061] Block diagram of expert control of sintering end point based on working condition identification figure 1 As shown, it consists of working condition identification, expert controller and parameter self-tuning module. The expert rules obtained through experience combination of identified various working conditions are not only used to adjust the control parameters, but also guide the output of the expert controller.

[0062] The first is the knowledge representation of typical conditions, through real-time collection of the detection values ​​of six process variables, including the mixing bin material level, sintering end point position, sintering end point temperature, and 17#~19# bellows temperature, and then, through the set sintering end point position (No. 23 bellows) is subtracted from the sintering end position at the current moment to obtain the deviation of the sintering end position; and the current and previous moments of the mixing bin material level and the ...

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Abstract

The invention provides a self-tuning expert control method of a burning trough point parameter based on working condition recognition, comprising the following steps of: firstly, data collection and fuzzification: collecting and calculating a mixture level, the change rate thereof, a deviation of a burning trough point position, burning trough point temperature, the change rate of a 17-19 air box temperature average value and 6 process variables of sintering waste gas temperature rising point position, and carrying out fuzzification treatment; secondly, fuzzy diagnosis: obtaining the working condition of a current sintering running state according to the 6 fuzzed process variables and based on a diagnosis rule; thirdly, online control: according to the working condition obtained in the fuzzy diagnosis step and based on an established expert rule, realizing automatic control of the burning trough point by online regulating a control period, a control step size as well as an upper limit value and a lower limit value of a sintering machine speed. The invention can efficiently inhibit the phenomenon of unsmooth sintering process caused by instable working condition and enhance the yield and the quality of sintered ores.

Description

technical field [0001] The technology of the invention belongs to the technical field of sintering production process control, and in particular provides an expert control method for self-tuning parameters of a sintering end point (Burning Though Point, BTP) based on working condition identification. technical background [0002] Realizing the automatic control of BTP has an extremely important guiding significance for ensuring the smooth progress of the sintering production process and improving the output and quality of sintering ore. The current sintering BTP automatic control generally uses the method of curve fitting to obtain the sintering waste gas temperature rising point (Burn Rising Point, BRP) to predict the position of the BTP, and then adjust the speed of the sintering machine to achieve the purpose of stabilizing the BTP. The actual production shows that because there are many interference factors in the control of BTP, it is far from enough to stabilize the BT...

Claims

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Application Information

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IPC IPC(8): G05B13/02
Inventor 吴敏焦国华曹卫华陈鑫张永祥陈略峰
Owner CENT SOUTH UNIV
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