| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce hysteresis generated in a control characteristic of a servo-regulator. <P>SOLUTION: A servo-regulator 20 in which a servo-piston 30 moves in both directions from a neutral position with respect to an axial direction includes first and second feedback springs 45, 55 sandwiched between a spring holder 80 and first and second control spools 40, 50, respectively, and a feedback ring 90 for transmitting the movement of the servo-piston 30 to the spring holder 80. The first and the second control spools 40, 50 are configured to control the thrust of first and second proportional solenoids 2, 3 against the first and second feedback springs 45, 55 so that both of them move following each other. <P>COPYRIGHT: (C)2010,JPO&INPIT |
