OIL QUANTITY CONTROLLER AND OIL QUANTITY CONTROL METHOD OF HYDRAULIC ACTUATOR

摘要

PURPOSE: To accurately carry out the movement control of a main spool with a simple constitution. ;CONSTITUTION: As for the movement of a main spool 8, a pilot oil passage opened by the preceding movement of a pilot spool 10 that is up to a position to cope with the magnetizing force of a magnetizing coil 12, is constituted so that it may become up to a position to be closed by the following movement of the main spool 8.;COPYRIGHT: (C)1995,JPO