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Simscape Torque Sensor output is zero

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Felix le 22 Fév 2024
Commenté : Felix le 25 Mar 2024
I'm simulating the simscape PMSM.
I set a fixed angular velocity via a Ideal Angular Velocity Source.
I want to measure angle via an Ideal Rotational Motion Sensor and torque via an Ideal Torque Sensor. I cannot find a configuration of the three blocks that will lead to a converging simuation and a measured torque that is not zero (despite phase currents flowing).
Here is my set up: (the ports R C are connected to the PMSM RC ports)
I read other threads on the issue of torque and roatinal sensing but no configuration of the two sensors lead to valid measurements and a converging simulation
Do you have suggestions on how to connect the sensors and source?
Many thanks!

Réponse acceptée

Steve Miller
Steve Miller le 23 Fév 2024
Your angular motion sensor should be connected between shaft and a Mechanical Rotational Reference (NOT in series).
Your torque sensor should be connected in series between the angular source and an inertia. Make sure your motor has inertia or a rotational inertia.
  1 commentaire
Felix le 25 Mar 2024
Thank you Steve!
This setup works for me:

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