WOLFRAM SYSTEM MODELER
DCVH63Hydraulically actuated proportional control valve with four ports and three states |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Hydraulic.Valves.DirectionalControl.HydraulicActuation.DCVH63"]
Out[1]:=
Information
This is a model of a control valve with eight ports and three states. The valve has a tank port t, a pressure port p, four load ports a, b, c1, and c2 and two pilot ports p1 and p2. The insignal, u, to the spool is the pressure difference between ports p1 and p2. The valve is controlled by a hydraulic spool with first-order dynamics; see SpoolH.
This valve is similar to DCVH43ClosedCenter; the only difference is that the two ports c1 and c2 are connected in the middle state.
This valve is similar to DCVH43ClosedCenter; the only difference is that the two ports c1 and c2 are connected in the middle state.
Implementation
This valve basically consists of orifices controlled by a spool.Parameters (9)
| medium |
Value: Oil() Type: Medium Description: Medium in the component |
|---|---|
| V |
Value: 0.0001 Type: Volume (m³) Description: Volume of control valve |
| Gleak |
Value: 1e-020 Type: PressureDependentLeakage (m³/(s⋅Pa)) Description: Leakage between orifices |
| overlap |
Value: 0 Type: Length (m) Description: Spool overlap, a number between -1 and 1; 0 if no overlap |
| AMax |
Value: 0.001 Type: Area (m²) Description: Maximum opening area |
| Cd |
Value: 0.62 Type: Real Description: Coefficient of discharge for the opening |
| pMin |
Value: 10000.0 Type: Pressure (Pa) Description: Pressure difference when the valve starts to move |
| pMax |
Value: 500000.0 Type: Pressure (Pa) Description: Pressure difference when the valve has reached its maximum position |
| t1 |
Value: 0.01 Type: Time (s) Description: Time constant for first-order system |
Connectors (8)
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port_p |
Type: Port_a Description: Port for hydraulic fluid (filled icon) |
|---|---|---|
|
port_t |
Type: Port_a Description: Port for hydraulic fluid (filled icon) |
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port_b |
Type: Port_b Description: Port for hydraulic fluid (unfilled icon) |
|
port_a |
Type: Port_b Description: Port for hydraulic fluid (unfilled icon) |
|
port_c1 |
Type: Port_a Description: Port for hydraulic fluid (filled icon) |
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port_c2 |
Type: Port_b Description: Port for hydraulic fluid (unfilled icon) |
|
port_p2 |
Type: Port_b Description: Port for hydraulic fluid (unfilled icon) |
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port_p1 |
Type: Port_a Description: Port for hydraulic fluid (filled icon) |
Components (12)
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medium |
Type: Medium Description: Medium in the component |
|---|---|---|
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volume_a |
Type: Volume Description: Fixed volume with fluid storage |
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volume_b |
Type: Volume Description: Fixed volume with fluid storage |
|
volume_t |
Type: Volume Description: Fixed volume with fluid storage |
|
volume_p |
Type: Volume Description: Fixed volume with fluid storage |
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rightState |
Type: CrossOver4Port Description: Basic building block for directional control valves |
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leftState |
Type: Straight4Port Description: Basic building block for directional control valves |
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middleState |
Type: ControlledOrifice Description: Controlled restriction |
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abs1 |
Type: Abs Description: Output the absolute value of the input |
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add1 |
Type: Add Description: Output the sum of the two inputs |
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const |
Type: Constant Description: Generate constant signal of type Real |
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spoolH1 |
Type: SpoolH Description: Model of a hydraulic spool |