SPerman wrote: ↑Mon Apr 03, 2023 8:14 am When I've had similar issues, it was due to a keyframe having a position locked.

https://help.solidworks.com/2021/Englis ... motion.htm

Hi, so how should I unlock the position?

Thank you

Zhen-Wei Tee wrote: ↑Sun Apr 02, 2023 6:08 pm could you share the files? without looking at the files it is a bit hard to say whats wrong

Hi, I have upload the file.

Hello, I am new for the motion analysis. I created a bipedal robot and would like to see the motion simulation. I set up a initial position for the robot and I also set up the expression for the hip motor. Everything is prefect in the animation. However, in the motion analysis, the motor will jump f...