WOLFRAM SYSTEM MODELER

MeterOut

Example circuit with meter-out flow control

Diagram

Wolfram Language

In[1]:=
SystemModel["Hydraulic.Examples.FlowControl.MeterOut"]
Out[1]:=

Information

This example model shows how to move a load with a cylinder and how the cylinder motion can be changed by adjusting the throttle. The method of placing the flow control valve on the outlet of the cylinder is called meter-out.

In both Fig. 1 and 2, the blue line shows the behavior when the throttle opening has been decreased. The red line shows the behavior without decreasing the throttle opening.

meterOutPlot1
Fig. 1 Load position with slightly closed(throttleArea = 1e-07 m^2) and open (throttleArea = 1e-06 m^2) throttle orifice opening respectively

meterOutPlot2
Fig. 2 Load speed with slighty closed (throttleArea = 1e-07 m^2) and open (throttleArea = 1e-06 m^2) throttle orifice opening respectively

Reference

Industrial Hydraulics Manual, 5th ed., Maumee, OH: Eaton Hydraulics Training Services, 2008 p. 299.

Parameters (2)

medium

Value: Oil()

Type: Medium

Description: Medium in the component

throttleArea

Value: 1e-06

Type: Area (m²)

Description: Throttle orifice opening area (1e-6 = Open, 1e-7 = Slightly closed)

Components (18)

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: PCVE43TandemCenter

min

Type: Min

stopStep

Type: Step

startStep

Type: Step

checkValve

Type: CheckValve

throttle

Type: FixedTurbulentThrottle

speedSensor

Type: SpeedSensor