Abstract

In a hypersonic wind tunnel, the motion of the electric putter Y mechanism needs to be controlled synchronously, and the accuracy or control performance of the system's synchronous motion control directly affects the running quality of the wind tunnel. Based on the deviation coupling mechanism of output displacement, the paper puts forward the synchronous control system of the model mechanism electric putter Y mechanism, and establishes the dynamic model of the mechanical system, current control ring, speed control ring and position control ring of the electric putter Y mechanism. A closed-loop synchronous three-ring control system is designed, and performance simulation is carried out. The results show that the system has fast synchronous response speed, high accuracy of synchronous displacement and synchronous speed control, and the system has strong robustness.

Highlights

  • Wind tunnel is a test device used to simulate the movement of aircraft in the atmosphere, for the model to carry out force test, heat test, wind tunnel field test test, stage separation and multibody separation test

  • The wind tunnel device has a synchronous control system that supports the synchronous motion of the support mechanism, which has a control accuracy or control performance, which directly affects the operation quality of the wind tunnel

  • The master-slave synchronization control strategy takes the output of the master subsystem as the input of the slave subsystem, and any reference input or disturbance loaded on the master subsystem will be reflected and followed by the slave subsystem

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Summary

Introduction

Wind tunnel is a test device used to simulate the movement of aircraft in the atmosphere, for the model to carry out force test, heat test, wind tunnel field test test, stage separation and multibody separation test. The master-slave synchronization control strategy takes the output of the master subsystem as the input of the slave subsystem, and any reference input or disturbance loaded on the master subsystem will be reflected and followed by the slave subsystem. The cross-coupling synchronization control strategy is mainly to the output of the subsystems of the velocity or displacement, comparing two synchronization error, and attach it as a reference input signal feedback to each subsystem of control circuit, and its compensation, to reflect any subsystem of load changes, make the system get good synchronization control precision. In this paper, based on the synchronization accuracy requirement of the electric push rod Y synchronous mechanism system in a wind tunnel, the mathematical model of the mechanism synchronization control system is established by using the cross coupling synchronization control strategy, and the simulation performance of the system is analyzed. In order to realize the synchronous motion of Y mechanism with high precision

Composition of the wind tunnel electric putter control system
Control model of electric pushrod drive Y mechanism
Simulation performance analysis of current ring control
Simulation performance analysis of speed ring control
Conclusions

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