Dinuclear urea SCR system emission control method based on NMPC
A technology of SCR system and emission control, which is applied in the electronic control of exhaust treatment devices, exhaust treatment, exhaust devices, etc., can solve the problems of limited emission and the inability to directly apply dynamic programming methods, and achieve the effect of simple process
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[0040] The specific embodiment that implements technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:
[0041] A kind of NMPC-based dual-nuclear urea SCR system discharge control method, comprises the following steps:
[0042] 1. Establish a control-oriented two-core eight-stage urea SCR system model;
[0043] 2. Propose a description method for NMPC optimization problem of urea SCR system;
[0044] 3. Propose the operation steps of the NMPC urea injection controller of the dual-core urea SCR system.
[0045] 3.1 In the first prediction time domain, assume that the initial value of u(k) in all sampling periods is u max .
[0046] 3.2 In the Simulink software, use the nonlinear numerical algorithm toolbox NAG to solve the above cost function and constraint problems, and obtain the optimal solution for all sampling periods in the control time domain.
[0047] 3.3 Assume that the optimal solution in the control time doma...
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