Multivariable predictive control method for air separation device
An air separation plant and predictive control technology, applied in general control systems, adaptive control, control/regulation systems, etc., can solve the problems of serious coupling, complex air separation plant processes, energy consumption and economic losses, etc. the effect of reducing the generation of additional cooling and reducing the rate of dissipation
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[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments: A multivariable predictive control method for an air separation plant, the multivariable predictive control method is:
[0025] a) Add a host computer to the DCS system LAN of the air separation unit to create the air separation unit MVPC server, and the MVPC client is installed on the DCS engineer station or operator station;
[0026] b) Determine variables: Determine the controlled variable CV, the operating variable MV, and the disturbance variable DV according to the optimization objectives of the air separation unit process flow (such as reducing product flow fluctuations, reducing energy consumption, etc.);
[0027] c) The principle of establishing the size of the MVPC matrix: select key parameters, as few variables as possible; at the same time, determine the settings of CV and MV related limits; MVPC operating variables adjust the valve opening, ...
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