WOLFRAM SYSTEM MODELER

Servo1

Example circuit of a cylinder moving a load

Diagram

Wolfram Language

In[1]:=
SystemModel["Hydraulic.Examples.Translation.Servo1"]
Out[1]:=

Information

This example model shows how to move a load with a cylinder. The directional control valve is used to connect the cylinder ends with either the pump or tank depending on the command. The pressure relief valve limits system pressure by opening when the pressure has reached a certain threshold.

Fig. 1 shows how the system pressure is limited by the relief valve. Fig. 2 shows how the control valve opens and then closes. Fig. 3 shows how the cylinder moves when the control valve is opened.

servo1Plot1
Fig. 1 Pump pressure and relief valve pressure setting

servo1Plot2
Fig. 2 Control valve opening state

servo1Plot3
Fig. 3 Load position

Parameters (2)

medium

Value: Oil()

Type: Medium

Description: Medium in the component

openingPressure

Value: 20000000.0

Type: Pressure (Pa)

Description: Relief valve opening pressure

Components (16)

medium

Type: Medium

Description: Medium in the component

tank1

Type: Tank

tank2

Type: Tank

pump

Type: Pump

tank3

Type: Tank

mass

Type: Mass

positionSensor

Type: PositionSensor

cylinderDouble

Type: CylinderDouble

const

Type: Constant

constantSpeed

Type: ConstantSpeed

pressureReliefValve

Type: PressureReliefValve

controlValve

Type: PCVE43ClosedCenter

min

Type: Min

stopStep

Type: Step

startStep

Type: Step

pressureSensor

Type: PressureSensor