I was posed a question based on my project on a gantry robot, "Cancelling torques that affect the prismatic joints can help us choose components with a lower cost which increases the cost-effectiveness of our system, how can we cancel these torques? (Think about external guides and guide rails)".
I've been thinking about this for a couple of days, googling different stuff, but I haven't been able to come up with answer. I can't fathom how torque would affect a linear joint, and thus coming up with a solution is difficult.
Any help would be appreciated.