Hydraulic actuator control circuit

A hydraulic actuator control circuit for controlling supply and discharge of oil to and from a hydraulic actuator, the hydraulic actuator control circuit comprising:

• a meter-in valve for controlling a supply flow rate from a hydraulic pump to the hydraulic actuator;
• and
• a meter-out selector valve arranged downstream of the meter-in valve and configured to switch between a direction of supply of hydraulic oil to the hydraulic actuator and a direction of discharge of hydraulic oil from the hydraulic actuator while controlling a discharge flow rate from the hydraulic actuator to an oil tank,
• the meter-out selector valve including a first port, a second port, and a third port,
• the first port of the meter-out selector valve being fluidly coupled to the hydraulic pump via the meter-in valve,
• the second port of the meter-out selector valve being fluidly coupled to the oil tank along a flow path that does not include the meter-in valve, and
• the third port of the meter-out selector valve being fluidly coupled to a first port of the hydraulic actuator along a flow path that does not include the oil tank,
• wherein a first position of the meter-out selector valve effects fluid communication between the first port and the third port along a first meter-out flow passage within the meter-out selector valve,
• wherein a first position of the meter-in valve effects fluid communication between the pump and the first port of the meter-out selector valve via a first meter-in flow passage within the meter-in valve, and
• wherein a full-open flow area of the first meter-out flow passage is larger than a full-open flow area of the first meter-in flow passage, such that the first meter-out flow passage does not change the supply flow rate through the meter-in valve.