Hi all,
I am trying to create the motion analyses for four axis scara robot as you can see in the pic. There are four motor and when i enter a value for motor 1 and suppressed 2,3 and 4, first axis moves according to value which i give but the rest are moving freely(i also added a video). i want them staionary because in the reality, as you know the motors (2,3,4) do not move. also when i create the results for 2,3 and 4, it gives me the plots which show motor torque change vs. time, also that should be zero. because i am not giving values to 2,3 and 4. i think i am missing something but i dont know what, can you help me pls?
As you did not include the model, I'm going to have to guess at a few things but here are some things to check:
1. Make sure your motors are define with the "Component to Move Relative to" defined. If this box is left blank, the motor is considered to move relative to ground. This is OK for motor 1 but not for the other 3 motors. If this is not defined for motors 2, 3 and 4, the study will either fail or sometimes fly appart as soon as motor 1 moves.
2. If you want motors 2, 3 and/or 4 to hold the component relatve positions, then they must be ON and defined to have Zero rotation.
3. If you set that up corectly, you should expect to see torque values at 2, 3 and 4 when 1 rotates as those motors hav to supply a torque to keep the components aligned against momentum.