Enable JavaScript to interact with content and submit forms on Wolfram websites. Learn how

WOLFRAM SYSTEM MODELER

PCVE32

Electrically actuated proportional control valve with three ports and three states

Diagram

Wolfram Language

In[1]:=

SystemModel["Hydraulic.Valves.DirectionalControl.ProportionalSolenoidActuation.PCVE32"]

Out[1]:=

Information

This is a model of a control valve with three ports and two states. The valve has a tank port t, a pressure port p, and a load port a. The insignal to the spool is called u. The valve is controlled by an electrical spool with dynamics; see SpoolP.

Control valve with three ports and two states

Valve at left position, u = 1; there is flow from a to t

Valve at right position, u = 0; there is flow from p to a

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
Un	Value: 1 Type: Voltage (V) Description: Spool nominal voltage
f	Value: 80 Type: Frequency (Hz) Description: Spool resonance frequency
d	Value: 0.9 Type: Damping (s⁻¹) Description: Spool damping

Connectors (4)

	port_a	Type: Port_b Description: Port for hydraulic fluid (unfilled icon)
	port_t	Type: Port_a Description: Port for hydraulic fluid (filled icon)
	port_p	Type: Port_a Description: Port for hydraulic fluid (filled icon)
	u	Type: RealInput Description: 'input Real' as connector

Components (10)

	medium	Type: Medium Description: Medium in the component
	flow_at	Type: ControlledOrifice Description: Controlled restriction
	flow_pa	Type: ControlledOrifice Description: Controlled restriction
	volume_t	Type: Volume Description: Fixed volume with fluid storage
	volume_p	Type: Volume Description: Fixed volume with fluid storage
	volume_a	Type: Volume Description: Fixed volume with fluid storage
	const	Type: Constant Description: Generate constant signal of type Real
	add1	Type: Add Description: Output the sum of the two inputs
	limiter1	Type: Limiter Description: Limit the range of a signal
	spool	Type: SpoolP Description: An electrical spool with second-order characteristics