直動・回転2自由度アクチュエータで制御される非対称可変重合スプール型油圧制御弁の開発

抄録

An asymmetric variable lap spool valve for hydraulic control system is proposed. The spool of the control valve with asymmetric notches on its land is operated by a linear/rotational two-degree-of-freedom actuator. The flow characteristics near the neutral position of the spool can be continuously changed according to the operating condition of the hydraulic actuator, the flow characteristics of the over- and under-lap valve can be continuously switched, and the flow characteristics of the meter-in and meter-out circuit can be switched as well. This paper reports that an asymmetric variable lap spool valve operated by a linear/rotational two-degree-of-freedom actuator can suppress cavitation during the control of a hydraulic actuator with inertia load