Experimental Study of the Dynamic Properties of 2D Servo Valve with Different Pilot Structure

Abstract:

The mechanical part of the 2D servo valve is mainly a hydraulic servo screw mechanism, by which the rotary motion of the spool is turned to linear sliding. A step motor is utilized to rotate the spool and functions as the electrical-to-mechanical transformer. For studying the different influences of 2D valve's pilot circular and full arch structure on its dynamic characteristics of servo screw mechanism, a step response and sine response experiment device was designed, and the experiments were done. The experimental results show that the full arch structure type step response time is about 1.6 ms (abbreviation of millisecond), the circular type about 3ms, proved that the full bow structure can significantly improve the dynamic characteristic of servo screw mechanism, it is also be proved by sinusoidal frequency response experiments.

• Periodical: Applied Mechanics and Materials (Volumes 687-691)
• Pages: 326-330
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.687-691.326
• Online since: November 2014
• Authors: Wei Zhao*, Jian Ruan
• Keywords: 2D Servo Valve, Frequency Response, Servo Screw Mechanism, Servo Valve, Step Response

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