基于液压驱动的动态试验控制系统设计

doi:10.7527/S1000-6893.2017.721521

Abstract

Abstract:

This paper introduces the design method of hardware and software for constructing the control system of wind tunnel dynamic test by applying the hydraulic drive, including the hydraulic motor, the parameter calculation and selection of the servo valve, the control system design of the hydraulic servo position, the design idea based on feedforward control and fuzzy Proportion-Integration-Differentiation (PID) control algorithm, the implementation method of simple harmonic movement. Through the analysis of the test data, this control system meet the requirements of control index for the amplitude difference less than 10% and the phase difference within 10°, under the amplitude/frequency combination of 5°/2.5 Hz or 40°/0.8 Hz, meanwhile analyzing that the main reason for the influence of motion frequency on the index is the deadband characteristic of the servo valve, and concluding the advantages and disadvantages of the dynamic test system based on hydraulic drive compared with the traditional motor drive system.

Key words: hydraulic drive, simple harmonic movement, hydraulic servo, wind tunnel test, dynamic derivative

CLC Number:

V211.752

WANG Jianfeng, BU Chen, TAN Hao. Control system design of dynamic test based on hydraulic drive[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(S1): 721521-721521.

References

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Control system design of dynamic test based on hydraulic drive

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