抄録
In this study, firstly, we have modeled a system consisting of various electro-mechanical and mechanical subsystems. The appropriateness of the model has been verified by simulation. The simulation model resolves the motion of spool, the winding current and the magnetic force. Also, we have calculated the displacement and velocity of the spool, flux contour line, b vector, flux density, flux linkage and back EMI' etc. Secondly, a program for analysis the flow in the spool was developed, and a study was conducted on the flow rate of the nozzle depending upon the pressure ratio between the upstream pressure and the downstream pressure, when the valve is fully open in the spool and the flow force depending upon a displacement of the spool in the valve. Further, the performance of pneumatic servo valve has been verified through an overall performance test on the developed product.
