External Torque Source (AB)

Ideal source of mechanical energy that generates torque proportional to the input signal

Since R2026a

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Libraries:
Simscape / Foundation Library / Rotational / Sources

Description

The External Torque Source (AB) block represents an ideal external torque source that generates a specified torque regardless of the load or angular velocity at the connected port.

Port R is an angle-based rotational conserving port. Specify the torque at physical signal port S. A positive signal at port S applies a positive torque on the network at port R.

Examples

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.

• Open Live Script

Ports

Input

S — Control signal, N*m

physical signal

Physical signal input port for the control signal that drives the source. A positive signal at this port applies a positive torque on the network at port R.

Conserving

R — Port that applies external torque to network

angle-based rotational

Angle-based rotational conserving port that connects the block to the circuit and applies the external torque to the physical network.

Extended Capabilities

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

Version History

Introduced in R2026a