Abstract: A servo actuator is provided which may comprise a controller configured to control a plurality of solenoid valves based upon an output signal. The plurality of solenoid valves may be used to control the position of the object. For example, a set of solenoid valves, of the plurality of solenoid valves, may be configured to conduct fluid from a tank into a first chamber of the cylinder, conduct fluid from the tank into a second chamber of the cylinder, conduct fluid from the second chamber of the cylinder into a first solenoid valve and/or conduct fluid from the first chamber of the cylinder into the first solenoid valve. The first solenoid valve, of the plurality of solenoid valves, may be configured to conduct fluid from the set of solenoid valves into a vent valve based upon a pulse width modulation (PWM) signal received from the controller.

Abstract: An actuator includes a cylinder, a first 2/2-way solenoid valve, a second 2/2-way solenoid valve, a fuzzy block, a controller, a source, a silencer, and a sensor. The cylinder is configured to receive a piston. The piston defines a first chamber and a second chamber inside the cylinder. The first 2/2-way solenoid valve includes an input terminal and a plurality of ports. The second solenoid valve includes an input terminal and a plurality of ports. The fuzzy block includes a plurality of phases each phase including a 2/2-way solenoid valve and a flow control valve for controlling the speed of movement of the piston within the cylinder. The controller is configured to issue a control signal for controlling the first and second 2/2-way solenoid valves and the 2/2-way solenoid valves included within the plurality of phases.

Abstract: A servo actuator is provided which may comprise a controller configured to control a plurality of solenoid valves based upon an output signal. The plurality of solenoid valves may be used to control the position of the object. For example, a set of solenoid valves, of the plurality of solenoid valves, may be configured to conduct fluid from a tank into a first chamber of the cylinder, conduct fluid from the tank into a second chamber of the cylinder, conduct fluid from the second chamber of the cylinder into a first solenoid valve and/or conduct fluid from the first chamber of the cylinder into the first solenoid valve. The first solenoid valve, of the plurality of solenoid valves, may be configured to conduct fluid from the set of solenoid valves into a vent valve based upon a pulse width modulation (PWM) signal received from the controller.