Actuators

Linear actuators for one- and two-way motion control

Use these blocks to model actuation in the thermal liquid domain.

Simscape Blocks

Double-Acting Actuator (TL)	Linear actuator with piston motion controlled by two opposing thermal liquid chambers
Single-Acting Actuator (TL)	Single-acting linear actuator in a thermal liquid system

Featured Examples

Reciprocal Actuator with Differential Cylinders

A double-acting actuator with differential cylinders. The pump output is connected to cylinder B of the actuator while cylinder A of the actuator can be connected to either the pump or the reservoir through the 3-way directional valve. When cylinder A is connected to the pump, pressures at both cylinders become equal. Because of the larger effective piston area in cylinder A, the interface force in cylinder A is larger than that of in cylinder B which causes the piston to extend. When cylinder A is connected to the reservoir, the piston starts to retract. The 3-way directional valve is controlled by a sinusoidal signal to achieve repeating reciprocal motion in the actuator.

Open Model

4-Way Directional Valve with Mechanical Effects

Compares two 4-way directional valves, one with mechanical components to account for spool mass, valve spring and damper and one without (ideal valve). The input force to both valves is a sine wave. The operation of two valves are compared for different displacement frequencies, valve spring stiffness and damper coefficients.

Open Model