Altair Twin Activate

Basangouda Patil
Basangouda Patil New Altair Community Member
edited March 28 in Community Q&A

Hi Guys!!!

I'm learning Twin Activate, particularly to model bldc motor. I'm using torque sensor but the model is throwing me error that the torque sensor module in incompatible. Can anyone help me out here. 

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Answers

  • RoKet_21298
    RoKet_21298
    Altair Employee
    edited March 28

    Hi Basangouda Patil,

    The torque sensor measures torque between two mechanical components. You have connected a signal to right mechanical connector of torque sensor. This leads to the error message.

    If you connect the right mechanical connector to a fixed element, you measure the static torque (no rotation) (input = output), but the model is not particularly meaningful.

    image

    The demo model Modelica/Mechanical/Coupled clutches.scm also shows the usage.

  • Spiros-Foivos Mallios_22475
    Spiros-Foivos Mallios_22475
    Altair Employee
    edited March 28

    Hi Basangouda,

    The reason you get this error is because you connected the flange_b (white dot) of the TorqueSensor to a scope which is not physically meaningful. Thus the compiler cannot write solvable equations.

    TorqueSensor (altair.com)

    Instead the flange_b should be connected to a modelica mechanics component such as spring / damper , brake, fixed etc.

    image

     

    Hope this makes sense,

    P.S i just saw that my colleague Ronald answered this just now as well.

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