A Rapid Design Method for Output Constraints of Control Layer in Dynamic Optimization of Distillation Industry of Diacetone
A technology of output constraints and dynamic optimization, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as long time consumption, and achieve the effect of ensuring feasibility and solving speed with short time consumption
Active Publication Date: 2018-04-27
ZHEJIANG UNIV
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[0006] The invention provides a rapid design method for the output constraints of the dynamic optimization control layer of the rectification industry of propylene glycol, which can effectively solve the problem that the calculation of the upper boundary of the output constraint reachable set and the lower boundary of the output constraint reachable set take a long time, and obtain Fetching speed is hardly affected by the dimensionality of the system
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[0058] The following is a detailed description of the rapid design method for the dynamic optimization control layer output constraints of the propylene ketone distillation industry in the present invention in conjunction with the accompanying drawings.
[0059] A rapid design method for dynamic optimization control layer output constraints in the distillation industry of propylene glycol, including:
[0060] Step 1, aiming at the industrial model predictive control system for distilling propylene glycol with double-layer structure, the gain model of the steady-state optimization layer of the model predictive controller is obtained as follows:
[0061] y=Gu+G d d
[0062] In the formula: y is the n×1-dimensional system output, y∈SOC;
[0063] G is an n×m dimensional process gain matrix;
[0064] u is an m×1-dimensional system input variable, u∈SIC;
[0065] G d is an n×p-dimensional interference gain matrix;
[0066] d is the system disturbance variable of p×1 dimension,...
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The invention discloses a rapid design method for the output constraint of the dynamic optimization control layer of the distilling industry of diacetone, comprising: step 1, aiming at the distilling industry model predictive control system of the double-layer structure, calculating the stability of the model predictive controller The gain model of the state optimization layer; step 2, find the uncertain elements in the gain model and process gain matrix; step 3, obtain the upper boundary of the output constraint reachable set and the output constraint reachable set according to the uncertain elements and system disturbance variables The lower boundary of the reachable set; step 4, according to the upper boundary of the output constraint reachable set and the lower boundary of the output constraint reachable set, the output constraints of the dynamic optimization control layer are obtained. The rapid design method for the output constraints of the dynamic optimization control layer of the rectification industry of propylene ketone provided by the present invention can effectively solve the problem that it takes a long time to calculate the upper boundary of the output constraint reachable set and the lower boundary of the output constraint reachable set, and the calculation speed It is hardly affected by the dimensionality of the system.
Description
technical field [0001] The invention relates to the field of industrial control, in particular to a rapid design method for dynamically optimizing the output constraints of a control layer in the rectification industry of propylene glycol. Background technique [0002] Acetone is one of the important basic organic raw materials, mainly used in the manufacture of cellulose acetate films, plastics and paint solvents. In different applications, acetone is required to have different purity, sometimes it is required to be of high purity, even anhydrous acetone, but this is very difficult, because acetone is extremely volatile and soluble, so, I want to It is often very difficult to obtain high-purity acetone. [0003] In order to raise the low-purity acetone aqueous solution to high-purity, continuous distillation is generally used. The rectification operation in the chemical plant is carried out in a vertical circular rectification column, which is equipped with several layers...
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IPC IPC(8): G05B13/04
Inventor 谢磊谢澜涛
Owner ZHEJIANG UNIV