Storage device, heating furnace outlet temperature control method, device and equipment

Abstract

The invention discloses a memory, a heating furnace outlet temperature control method, a heating furnace outlet temperature control device and heating furnace outlet temperature control equipment. The nonlinear predictive control method comprises the following steps of: presetting a set value of a nonlinear predictive controller; constructing an object model group of the nonlinear control system through model identification; generating a dynamic equation of the object model group, and calculating disturbance characteristics of the object model group according to the dynamic equation; respectively acquiring an actual output measurement value and a state estimation value of the nonlinear control system at the current moment; calculating the optimal state estimation value of the nonlinear control system at the next moment through an extended Kalman filter; and substituting the optimal state estimation value of the dynamic equation of the object model group into a nonlinear predictive control algorithm of the nonlinear control system to obtain an optimal solution, wherein the optimal solution is used for input of the object model group. According to the heating furnace outlet temperature control method, the heating furnace outlet temperature control device and the heating furnace outlet temperature control equipment, the outlet temperature of the heating furnace can be effectively controlled, and the control failure phenomenon is reduced.

Description

technical field [0001] The invention relates to the field of process control, in particular to a storage device and a method, device and equipment for controlling the temperature at the exit of a heating furnace. Background technique [0002] In the prior art, the outlet temperature control system of the heating furnace can maintain a stable outlet temperature by adjusting the opening of the fuel gas flow regulating valve, so as to avoid production accidents. Traditional cascade control uses a PID controller to determine the current control input based on the deviation between the current and past output measurement values ​​and set values ​​of the process. [0003] The inventor has found through research that at least the following defects exist in the prior art: [0004] The cascade control system composed of fuel gas flow rate and heating furnace outlet temperature is subject to complex disturbance factors and very high control requirements, resulting in large fluctuatio...

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Problems solved by technology

[0004] The cascade control system composed of fuel gas flow rate and heating furnace outlet temperature is subject to complex disturbance factors and very high control requirements, resulting in large fluctuations in the heating furnace outlet temperature in the existing device, which cannot achieve the ideal control effect

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