Research on 3D Displacement Control of Coordinate Frame of Spray Measurement System
In order to solve the problem of precise positioning of the measurement point in the study of the atomization effect of the fuel injector through the three-dimensional PDA(Phase Doppler Anemometry)measurement system in the aerospace engine ex-perimental system,an adaptive fuzzy neural network PID control algorithm is adopted to control the stepping motor of the three-di-mensional coordinate frame of the measurement system.The transfer function model of stepper motor position control is established.The PID control system,fuzzy PID control system and fuzzy neural network PID control system of stepper motor displacement are simulated through the Simulink platform of Matlab.Experiment shows that the adaptive fuzzy neural network PID control system im-proves response time to 0.05 s and substantially reduces overshoot.This method can greatly improve the speed and accuracy of coor-dinate frame positioning.
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