Remote Control Method for Coal Conveying System in Thermal Power Plants Based on Fuzzy PID Algorithm
Due to the large steady-state error and poor anti-interference ability of existing control methods,a remote control method for coal conveying systems in thermal power plants based on fuzzy PID algorithm is studied.Using the stator voltage of the coal conveying system as the input variable of the model,establish an equivalent control model in a two-phase rotating coordinate system.Preprocess the input data to zero mean the input and output data.Use the least squares method to identify the parameters of the model and obtain a more reasonable control model.Establish a fuzzy rule table,and when there is a deviation between the input variable and the output variable,it is necessary to eliminate the deviation to prevent oscillation.Inputting state variables into a matrix can output corresponding control rules.Design a DG-PID controller to automatically generate fuzzy control rules,set adjustment parameters,and calculate control strategies.By incorporating the results into the above model and adjusting the PID parameters Appropriately,the ultimate goal of control is achieved.The experimental results show that before adding disturbances to the system,the steady-state error of the experimental group was 0%,and it was restored to a stable state under the control of the controller,achieving good optimization results;After adding disturbance,the experimental group reached the set value at a simulation time of 1500 s,demonstrating strong anti-interference ability to ensure the normal operation of the system.
fuzzy PID algorithmthermal power plantscoal conveying systemremote control
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