Torque source

Applies the input signal as torque to the flange.

  • signal
  • rotational
  • Modelica Standard Library
  • 2 ports
BlockTorque sourceKindtorqueSourceLibraryRotational

Description

Applies the input signal as a torque to the flange, reacting against the housing. Use it for an actuator whose torque is computed by a controller or a signal source.

Example

Clutch, backlash, and rotational sources A clutch that locks, gear backlash, a spring-damper coupling, and a load that steps its torque.

100 rad/s at 0.1 sDriveClose at 0.5 sClutchDriven 1 kg·m²Driven speedω ref 10 sin 2πtSpeed sourceBacklash 0.1 radInertia 0.01Speed behind backlash0.5 N·mTorque sourceCouplingInertia 0.02, damping 0.05Coupled speed0.4 N·mShaft loadLoad speed
In Gradara, select a Torque source block and press F1, then choose Open example. It opens as a new model in My models, ready to run.

Also in this example:ConstantMechanical loadStepInertia & loadSpeed sensorSine waveSpring-damperBacklashInertia (ideal)ClutchConstant torqueSpeed sourceSpeed sensor (ideal)

Ports

Inputs 1

  • τtausignal · N·m

    Torque to apply, in N·m. A positive value accelerates the flange in the positive direction.

Conserving terminals 1

  • shaftflangerotational

    Flange the torque acts on.

Equations

Modelica
flange.tau = −tau

Implementation

Modelica Standard Library 4.1.0Modelica.Mechanics.Rotational.Sources.Torque
MSL documentation

Assumptions and limitations

  • The reaction torque goes to the housing; there is no support flange.

See also

Select a block in Gradara and press F1 to open its page offline.