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Length Actuator (PB)

Ideal actuator that maintains length proportional to the input signal

Since R2024b

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  • Length Actuator (PB) block

Libraries:
Simscape / Foundation Library / Translational / Sources

Description

The Length Actuator (PB) block represents an ideal actuator that maintains a specified length regardless of the load at the connected ports.

Connections B and F are position-based mechanical translational conserving ports. The physical signal at port S specifies the distance between the ports B and F. A positive signal at port S indicates that port F has a more positive position than port B.

The block logs these variables:

  • f — force that port B applies to port F. A positive logged force indicates that the actuator acts to separate the ports when length is positive, that is, the actuator is in a state of compression. A negative logged force indicates that the actuator acts to bring the ports closer together when length is positive, that is, the actuator is in a state of tension.

  • v — relative velocity, v=vF−vB

  • length — distance between ports, specified by the signal at port S, length=xF−xB.

For more information, see Data Logging.

Ports

Input

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Physical signal input port for the control signal that drives the source. A positive signal at this port applies a positive force from port B to port F and acts to separate the ports B and F when the actuator length is positive.

Conserving

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Position-based mechanical translational conserving port that represents the base connection.

Position-based mechanical translational conserving port that represents the follower connection. For positive length, port F has a more positive position than port B.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2024b

See Also

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