Revolute joint with torque input not moving (no error thrown)

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Carson Lansdowne
Carson Lansdowne on 13 Jul 2021
Answered: Steve Miller on 28 Sep 2021
Hello, I am building a simscape model of a 3DOF model, part of which I have pictured below. The mechanism giving me grief is rather simple, it is just a leadscrew mounted to a carriage. The revolute joint, "Revolute4" is giving me a lot of trouble and I believe it might (?) have something to do with my lead screw block, since this block in particular proved difficult to work with..
Essentially, when I move the carriage, via a prismatic articulation signal, the revolute4 joint will output a motion and position signal. However, when I try to drive this with torque input directly to the Revolute4 (and not the prismatic), there is no revolution of the joint. How do I resolve this? Simscape throws no errors and therefore I am more or less at a complete loss on how to troubleshoot this issue. I have attached the image of part of my project, unfortunately I will not be able to include the entire project but I believe this information is enough to begin with.
Yifeng Tang
Yifeng Tang on 23 Jul 2021
Is it possible to reproduce this problem without including your IP content, by removing details not related to the revolute joint movement? It's really difficult to figure out model problem from snapshots.

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