A Gru-pid-Based Predictive Control Method for Boiler Pressure Regulation

Abstract

The invention relates to a GRU-PID-based boiler pressure regulation prediction control method. Step 1: establish a boiler pressure regulation control system; step 2: use a trained GRU algorithm model to predict the pressure of the boiler for multiple time steps in the future; step 3: Calculate the correlation function based on the multi-time step control error of the boiler pressure; Step 4: Calculate the output of the boiler control system based on the above correlation function. The invention calculates the multi-time-step control error correlation function based on the multi-time-step boiler pressure value predicted by the GRU algorithm, can solve the boiler control lag problem, and significantly improves the boiler pressure control accuracy.

Description

technical field [0001] The invention relates to the field of boiler pressure regulation control, in particular to a GRU-PID-based boiler pressure regulation prediction control method. Background technique [0002] In the industrial field, boilers are widely used as a device for producing steam. The energy released by the boiler through the combustion of fuels such as coal, oil or gas, converts liquid water into steam, and then the steam is directly supplied to the thermal energy required in industrial production, or converted into mechanical energy and electrical energy through steam power engines and steam turbine generators. Among them, boiler pressure control is a crucial issue. The traditional method is manually regulated by experienced engineers. However, with the gradual increase in production requirements, the difficulty of boiler pressure control is gradually increasing, and the manual regulation method is inefficient. , the security is not high, so the method of au...

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Problems solved by technology

With the development of technology, the application of dynamic pressure regulation is becoming more and more extensive. The existing automatic control technology only regulates the control variables based on the pressure error at the current moment. The execution lag of the mechanism is relatively large (especially the blower that regulates the gas concentration takes a long time to increase the wind power), and the hysteresis of this pressure regulation will be very serious, which will inevitably lead to the control overshoot in the control process of boiler pressure regulation And the problem of large steady-state error, so the overall control accuracy of the boiler is low, which cannot meet the needs of industrial production

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