Mechanical Engineering Commons^™

Dynamic Friction Measurement, Atif Aly

Theses

The friction force between two bodies sliding at constant relative velocity is a function of their relative velocity. Under conditions of time-variable relative velocity, the instantaneous friction is a function not only of the instantaneous velocity but also the velocity history. An understanding of the resulting dynamic friction function will allow for the design of control systems where velocity is time-varying, oscillatory andoften contained in a relatively small region centered around zero amplitude. Within the control system, a portion of the control force can be implemented to effectively counteract the friction present and allow for precise motion control.

In this …