Jerk Limitation is a function of a position controller with which the reference variables are set such that jerks in the motion sequence are largely avoided. This leads to smoother motion and allows faster and more accurate travel as less vibration is induced.

This is an extract from the Dictionary of Electrical Drive Technology, published by Festo and worth £14.99. We're offering copies completely free of charge exclusively to readers of Motor Technology News. It's a very handy reference book to have on your desk! Get your free copy now by e-mailing your name and address to andrew@controlinmotion.com and be quick as we've only got a limited supply.

Further definitions of "Jerk" and "Jerk Limitation" in motion control applications can also be found on Wikipedia.