WOLFRAM SYSTEM MODELER
Servo1Example circuit of a cylinder moving a load |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Hydraulic.Examples.Translation.Servo1"]
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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.
Fig. 1 Pump pressure and relief valve pressure setting
Fig. 2 Control valve opening state
Fig. 3 Load position
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.
Fig. 1 Pump pressure and relief valve pressure setting
Fig. 2 Control valve opening state
Fig. 3 Load position
Parameters (2)
Components (16)
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medium |
Type: Medium Description: Medium in the component |
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tank1 |
Type: Tank Description: Simple tank with constant pressure |
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tank2 |
Type: Tank Description: Simple tank with constant pressure |
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pump |
Type: Pump Description: Model of a pump with fixed displacement and volumes |
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tank3 |
Type: Tank Description: Simple tank with constant pressure |
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mass |
Type: Mass Description: Sliding mass with inertia |
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positionSensor |
Type: PositionSensor Description: Ideal sensor to measure the absolute position |
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cylinderDouble |
Type: CylinderDouble Description: Double cylinder model |
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const |
Type: Constant Description: Generate constant signal of type Real |
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constantSpeed |
Type: ConstantSpeed Description: Constant speed, not dependent on torque |
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pressureReliefValve |
Type: PressureReliefValve Description: Pressure valve, controlled by the pressure difference between the ports |
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controlValve |
Type: PCVE43ClosedCenter Description: Electrically actuated proportional control valve with four ports and three states |
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min |
Type: Min Description: Pass through the smallest signal |
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stopStep |
Type: Step Description: Generate step signal of type Real |
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startStep |
Type: Step Description: Generate step signal of type Real |
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pressureSensor |
Type: PressureSensor Description: Sensor measuring absolute pressure |