Rotational World (AB)
R2026bRotational World (AB) block
To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.
Libraries:
Simscape /
Foundation Library /
Rotational /
Elements
Description
The Rotational World (AB) block represents a stationary reference for the world frame. All angles are relative to the reference. Connecting a port of another block to the Rotational World (AB) block sets its angle and angular velocity to zero.
An angle-based rotational network can have multiple Rotational World (AB) blocks because a rotational system in real life can have multiple stationary points. To model a stationary point at a nonzero angle, connect a Rotational World (AB) block to a Rotational Spacer (AB) block.
Examples
Interpreting Angle in the Angle-Based Rotational Domain
Set up and interpret angles in angle-based rotational models. It provides background information to explain the underlying concepts. The angle-based rotational domain tracks angle, θ, and rotational velocity, ω, at every node. Use angle-based rotational blocks to model rotational systems where knowing multiple component angles is important.
Interpreting Torque in the Angle-Based Rotational Domain
Describes how to interpret torques in a Simscape™ angle-based rotational network. It outlines the key concepts for understanding the signs of logged torques. It examines rotational spring systems driven by torque sources at different ends, as well as a rotational system of inertias, to illustrate the torque behavior.
Ports
Conserving
Programmatic Use: Add Block
To add the block programmatically, use the add_block function with one of these library block paths as the source.
"fl_lib/Rotational/Elements/Rotational World (AB)"
Example: add_block("fl_lib/Rotational/Elements/Rotational World (AB)","myModel/myBlock",MakeNameUnique="on")
For information about programmatic access to individual block parameters, see the Programmatic Use section of parameter descriptions on this page.
Extended Capabilities
Version History
Introduced in R2026a
