Interface (AB-Rotational)

Connect angle-based and non-angle-based mechanical rotational ports

Since R2026a

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Libraries:
Simscape / Foundation Library / Rotational / Utilities

Description

The Interface (AB-Rotational) block represents a rigid connection between an angle-based and a non-angle-based mechanical rotational network. Port angular velocities are equal. Torques at the interface are equal and opposite.

The Angle-based port parameter value determines the block orientation. Align the block positive direction with the positive direction of the connected angle-based network.

The block logs the variable t:

• If Angle-based port is Bab, t represents the torque of the angle-based rotational network at port Bab acting on the non-angle-based rotational network at port F.

• If Angle-based port is Fab, t represents the torque of the non-angle-based rotational network at port B acting on the angle-based rotational network at port Fab.

For more information, see Data Logging.

Examples

Interfacing Angle-Based Rotational and Position-Based Translational Networks

Demonstrates how you can define positive directions for translation and rotation in your physical view and adjust the Simscape™ network to achieve the desired behavior. It highlights the flexibility of Simscape in mapping physical directions to schematic representations.

• Open Live Script

Ports

Conserving

Bab — Angle-based port on left side

angle-based rotational

Angle-based rotational conserving port that represents a passage point through the interface. Connect this port to an angle-based rotational port of another block.

Dependencies

To enable this port, set the Angle-based port parameter to Bab.

Fab — Angle-based port on right side

angle-based rotational

Angle-based rotational conserving port that represents a passage point through the interface. Connect this port to an angle-based rotational port of another block.

Dependencies

To enable this port, set the Angle-based port parameter to Fab.

F — Non-angle-based port on right side

mechanical rotational

Mechanical rotational conserving port that represents a passage point through the interface. Connect this port to a regular, non-angle-based, mechanical rotational port of another block.

Dependencies

To enable this port, set the Angle-based port parameter to Bab.

B — Non-angle-based port on left side

mechanical rotational

Mechanical rotational conserving port that represents a passage point through the interface. Connect this port to a regular, non-angle-based, mechanical rotational port of another block.

Dependencies

To enable this port, set the Angle-based port parameter to Fab.

Parameters

Angle-based port — Interface orientation

Bab (default) | Fab

Specify the block orientation:

• Bab — Exposes the angle-based port Bab, located on the left side of the block icon in the default orientation, and the mechanical rotational port F on the right side. The block positive direction is from port Bab to port F.

• Fab — Exposes the angle-based port Fab, located on the right side of the block icon in the default orientation, and the mechanical rotational port B on the left side. The block positive direction is from port B to port Fab.

Extended Capabilities

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

Version History

Introduced in R2026a