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Multi-model dynamic matrix feeding amount control method for coagulation system in waterworks

A comprehensive dynamic and matrix control technology, applied in separation methods, chemical instruments and methods, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of limited popularization and application, troublesome and high requirements

Inactive Publication Date: 2007-08-22
SOUTHEAST UNIV +1
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Problems solved by technology

However, the flowing current detection equipment has cross factors for various water quality parameters, poor anti-interference ability, high requirements for raw water quality and process, troublesome instrument adjustment, and difficult maintenance, which limits the promotion and application of this technology in China

Method used

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  • Multi-model dynamic matrix feeding amount control method for coagulation system in waterworks
  • Multi-model dynamic matrix feeding amount control method for coagulation system in waterworks
  • Multi-model dynamic matrix feeding amount control method for coagulation system in waterworks

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Embodiment Construction

[0056] A multi-model comprehensive dynamic matrix control method for the dosage of the coagulation system in a waterworks, using the multi-model comprehensive dynamic matrix control theory, taking the raw water flow as the object, dividing the whole system into several subspaces, and doing experiments separately to obtain the subspaces A segmented linearization model is used to construct a dynamic matrix predictive controller corresponding to the subspace; for the current timely working condition, according to the actual raw water flow and a certain weight strategy, the dynamic model of the system is determined to predict the change of turbidity of the effluent, and After weighting processing, the overall control increment is obtained, the dosage is adjusted, and the turbidity of the effluent is controlled.

[0057] The present invention adopts multi-model comprehensive dynamic matrix predictive control technology to automatically control the dosage of tap water coagulation sys...

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Abstract

The multi-model dynamic matrix feeding amount control method for coagulation system in waterworks features that dynamic matrix predicting controller is constituted based on comprehensive multi-model dynamic matrix control theory and by means of using raw water flow rate as the control target, separating the whole system into several subspaces and separate experiments to obtain sectional linear models of the subspaces; and that outflow water turbidity is controlled through determining the dynamic model of the system, predicting the outflow water turbidity, weighting treatment to obtain overall control increment and regulating the feeding amount based on the current work conditions, practical water flow rate and certain weighting police. The present invention can ensure smooth outflow water turbidity, system running economic performance, high robustness and low cost.

Description

Technical field: [0001] The utility model relates to the use of multi-model comprehensive dynamic matrix control theory to realize the automatic control of dosage in the coagulation process of waterworks. For several subspaces, conduct experiments separately, obtain the segmented linearization model of the subspace, and construct a dynamic matrix controller corresponding to the subspace; for the prediction model of the entire coagulation process, taking into account the large time delay of the entire coagulation process of the water plant , large inertia characteristics, through flow forecasting, calculate the membership degree of each subspace based on the average value of flow changes in a period of time in the future, and construct the system object model under the current working condition; finally, through the dynamic matrix controller of each subspace Weighted calculation, obtain the overall control increment, adjust the dosage, and automatically control the turbidity of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/30B01D21/01C02F1/52
Inventor 莫晓明周杏鹏赵梦龙罗彬宋久生王卫
Owner SOUTHEAST UNIV
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