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Fuzzy intelligent control system for casting water processing medicament

A technology of fuzzy intelligent control and water treatment, applied in control/regulation system, flocculation/sedimentation water/sewage treatment, ratio control, etc., can solve the problems of noise pollution, decrease in reliability of control system, ambiguity, etc., to improve the quality of regulation , Improve the dynamic characteristics, reduce the effect of overshoot

Inactive Publication Date: 2008-11-12
WUHAN HUAKAI SCI & TECH
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Problems solved by technology

[0009] (1) When the time-delay, nonlinear, high-order and time-varying characteristics of the controlled object are more prominent, the control quality of the system is difficult to improve
[0010] (2) Under the control excitation of different amplitudes, the response characteristics of the controlled system to the control excitation are different, and change with the change of the working condition; coupled with the nonlinear influence of the system, the control process becomes more complicated
[0011] (3) Since the work of the controlled object is under the action of various complex, definite or unclear physical fields and chemical fields, the disturbance factors of the controlled object are complex and the cause of the disturbance is unknown
[0012] (4) Especially for the process mechanism, disturbance mechanism and coupling mechanism relationship of some controlled objects is not completely clear, when the extraction accuracy of some processes is not high enough or the noise pollution is serious and not clear enough, the reliability of the control system will be significantly reduced
[0013] However, the chemical dosing (adding alum) control process in the water treatment industry shows random, fuzzy, large lag, nonlinear, and strong coupling characteristics. The detection conditions are relatively rough, and it is difficult to find an accurate quantitative relationship and establish an accurate mathematical model

Method used

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  • Fuzzy intelligent control system for casting water processing medicament
  • Fuzzy intelligent control system for casting water processing medicament

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] The prediction model of the present invention utilizes the linear modeling method to establish the controlled object model with a relatively long history, and there are already very mature methods in this respect, but its core is the binary modeling based on the input-output one-to-one correspondence of the object method, when it is actually applied to industrial process control, there are some disadvantages. The predictive model proposed by the present invention is to establish a behavioral dynamic model of the controlled object, which can overcome the shortcomings of the binary modeling method. Specifically :

[0026] 1. The prediction model is based on the advanced prediction of system development and changes, and has high accuracy;

[0027] 2. The predictive model is sampling transient modeling. Its working process is to build a new model and upda...

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Abstract

The invention relates to a fuzzy intelligent system for additi0n of a water treatment medicament, the applied method comprises the steps of: in the first place, establishing a forecasting model of the controlled object online in light of the state and operating quantity of the controlled object, forecasting the control result maintaining the current operating quantity with the model, then in a control target evaluation, evaluating the control effect of the system and generating the result which adjusts weights of the fuzzy control, in terms of the current state and forecasting result of the controlled object, as a result of that, the fuzzy control can confirm the optimal operating increment. With an eye to vast territory of our country and plenty of tap water and sewage disposal plants, the invention has extremely extensive application and market prospects.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a fuzzy intelligent control system for adding water treatment chemicals. Background technique [0002] With the improvement of people's requirements for tap water quality, higher requirements are put forward for the purification treatment process of tap water plants. The effect of dosing has a decisive impact on the water quality of factory water, so the automatic control of the dosing process is very important. It can not only ensure the water quality of tap water, but also reduce the consumption of chemicals and energy consumption, thereby saving costs. [0003] In foreign countries, especially in western developed countries, the environmental protection is better, the water source is in good condition, and the water quality changes little. Therefore, it is relatively easy to realize the automatic control of coagulation and dosing. In some places, simple ratio control can achieve...

Claims

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Application Information

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IPC IPC(8): B01D21/32B01D21/01C02F1/52B01F15/04G05D11/02G05D21/00
Inventor 宋军王昭松李文华
Owner WUHAN HUAKAI SCI & TECH
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