Acceleration sensor (linear)

Absolute acceleration of the flange.

  • signal
  • translational
  • Modelica Standard Library
  • 2 ports
BlockAcceleration sensor (linear)KindtransAccSensorLibraryTranslational

Description

Measures the absolute acceleration of the flange without loading it.

Example

Mass, spring, and damper Two 1 kg masses on 100 N/m springs and 2 N·s/m dampers, pushed by 1 N, with every translational sensor.

Force step 1 NApplied forceMass 1 kgSpring-damperWallPositionVelocityAccelerationForce 1 NMass 1 kg (lower)Spring 100 N/mDamper 2 N·s/mWall (lower)Spring compressionPosition (lower)
In Gradara, select a Acceleration sensor (linear) block and press F1, then choose Open example. It opens as a new model in My models, ready to run.

Also in this example:Fixed (translational)MassSpringDamperSpring-damperConstant forceForce stepPosition sensorVelocity sensorForce sensorRelative position sensor

Ports

Outputs 1

  • asignal · m/s²

    Acceleration, in m/s².

Conserving terminals 1

  • shaftflangetranslational

    Measured flange. No force is exchanged.

Equations

Modelica
a = d²(flange.s)/dt²
flange.f = 0

Implementation

Modelica Standard Library 4.1.0Modelica.Mechanics.Translational.Sensors.AccSensor
MSL documentation

Assumptions and limitations

  • The position is differentiated twice, so the output jumps wherever the applied force jumps.

See also

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