METHOD FOR SUPPRESSING AND CONTROLLING PRESSURE OVERSHOOT IN ELEVATION AND LOWERING CIRCUIT OF HYDRAULIC PRESSURE

摘要

PURPOSE: To quickly respond to a command on pressure such as pressurizing and vacuum pressure of a hydraulic oil without overshoot by means of a hydraulic controlling valve such as a relief valve and a servo pump. ;CONSTITUTION: A pressure control circuit 13 for a hydraulic controlling valve such as a relief valve and a servo pump is connected in series with a circuit 14 controlling the rate of change of a command on pressure which sets the rate of change on pressure to a specified command on pressure and a circuit 15 delaying response to the command on pressure which delays the command on pressure by using a filter.;COPYRIGHT: (C)1993,JPO&Japio