Possibilities of liquid flow control by servo valves of a special design

Abstract

The main feature of the servo valves of a special design for control of hydraulic drives is that hydraulic liquid flows through them by doses of a defined volume, being controlled by a plunger stroke length. The plunger is placed or in an inside channel of a revolving spindle of a valve or in a separate bushing and is driven by consecutive connection of its channel with inlet and outlet of the hydraulic system. Doses frequency is controlled by revolving frequency of the spindle.[...].