Automatic air bleeding system for hydraulics

A hydraulic actuator system comprising:

• a valve assembly having a fluid supply port in fluid communication with the main fluid supply conduit, a fluid drain port, and a fluid control port in fluid communication with the main fluid control conduit;
• and
• a controller configured to control operation of the valve assembly, the operations comprising:
• actuating a closure member of the valve assembly at a predetermined first velocity a predetermined first number of cycles between a first configuration in which fluid flow is drained for a predetermined first drain period and a second configuration in which a fluid flow path is flushed for a predetermined first flushing period;
• actuating the closure member at a predetermined second velocity a predetermined second number of cycles between the first configuration for a predetermined second drain period and the second configuration for a predetermined second flushing period;
• actuating the closure member at a predetermined third velocity a predetermined third number of cycles between the first configuration for a predetermined third drain period and the second configuration for a predetermined third flushing period;
• actuating the closure member at a predetermined fourth velocity a predetermined fourth number of cycles between the first configuration for a predetermined fourth drain period and the second configuration for a predetermined fourth flushing period;
• and
• actuating the closure member at a predetermined fifth velocity a predetermined fifth number of cycles between the first configuration for a predetermined fifth drain period and the second configuration for a predetermined fifth flushing period.