Abstract
Traditionally, in a cam-follower system, the cam is often operated at a constant speed and the motion characteristics of the follower are determined once the cam displacement curve is designed. From the kinematic point of view, the approach by varying cam input driving speed is an alternative way for improving the follower motion characteristics. Here we show how to find a polynomial speed trajectory for reducing the peak values of the motion characteristics. Furthermore, constraints and systematic design procedures for generating an appropriate trajectory of the cam angular velocities are developed. Design examples are given to illustrate the procedure for getting an appropriate speed trajectory as variable speed cam-follower systems. Furthermore, an experimental setup with a servo controller is developed to study the feasibility of this approach. Experimental data show that the results are very close to those of theory.
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