Ideal Torque Source

R2026b

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

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Ideal Torque Source 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 / Mechanical / Mechanical Sources

Description

The Ideal Torque Source block represents an ideal source of mechanical energy that generates torque proportional to the input physical signal. The source is ideal in a sense that it is assumed to be powerful enough to maintain specified torque regardless of the angular velocity at source terminals.

Connections R and C are mechanical rotational conserving ports. Port S is a physical signal port, through which the control signal that drives the source is applied. You can use the entire variety of Simulink^® signal sources to generate the desired torque variation profile. Positive signal at port S generates torque acting from C to R. The torque generated by the source is directly proportional to the signal at the control port S.

The block positive direction is from port C to port R. This means that the torque is positive if it acts in the direction from C to R. The relative velocity is determined as ω = ω_C – ω_R, where ω_R, ω_C are the absolute angular velocities at ports R and C, respectively, and it is negative if velocity at port R is greater than that at port C. The power generated by the source is negative if the source delivers energy to port R.

Examples

Permanent Magnet DC Motor

Verify manufacturer specifications of no-load speed, no-load current, and stall torque for a DC motor by using a test harness and Simscape™ blocks.

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Ports

Input

S — Control signal, N*m

physical signal

Physical signal input port, through which the control signal that drives the source is applied.

Programmatic Use

Port: S

Conserving

R — Rod

mechanical rotational

Mechanical rotational conserving port associated with the source moving part (rod).

Programmatic Use

Port: R

C — Case

mechanical rotational

Mechanical rotational conserving port associated with the source reference point (case).

Programmatic Use

Port: C

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/Mechanical/Mechanical Sources/Ideal Torque Source"

Example: add_block("fl_lib/Mechanical/Mechanical Sources/Ideal Torque Source","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

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

Version History

Introduced in R2007a