- #1

TheShermanTanker

- 13

- 4

What I want is simple: To attach a linear actuator on the moving arm in such a way that the mechanical advantage of the actuator is exactly 1 (Ie the actuator only has to generate exactly the amount of force as the load on the moving arm)

This may seem simple at first glance, just attach the actuator at the far end of the moving arm, right?

But there is a necessary constraint: The other end of the actuator has to be fixed to the fixed arm AND has to be as close to the moving arm as possible, I can't just stick the other end to anywhere I want. So now I end up with this:

The problem is that torque generated depends on perpendicular distance to the pivot. So no matter how far out I fix the actuator, it's still at a mechanical disadvantage, since the actual perpendicular distance to the pivot is very small

Anyone know how I can fix this issue?