스풀-슬리브 형상공차가 서보밸브 정특성에 미치는 영향 연구

In their paper, it was studied how the clearance, overlap and mismatch error of spool sleeve affect static pressure characteristics of a servo valve. A computer simulation model was established for a direct acting servo valve, A series of simulation were done for various values of clearance, overlap and mismatch error. Pressure gain decreased as the clearance increased. The overlap also affects the pressure gain and it was similar to the effect of clearance. Asymmetry of pressure plot got worse and worse as the mismatch error increased.