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Cam-follower mechanisms often operate under the condition that
the driving input to cams is a constant speed. This work
presents an alternative approach, based on the concept of
controlling the cam input driving speed which is academically
innovative,for improving the motion characteristicsof cam-
follower mechanisms. A DSP-based servo control system is
established for studying the feasibility of the variable speed
cam mechanism system. Constraints and systematic design
procedure for generating an appropriate cam speed trajectory
which has the function to reduce the peak values of the state
of motion are developed. The $H^\infty$ control theory is
applied to design a robust servo controller for meeting
desirable performance in the presence of uncertainties. The
experimental results obtained from a prototype system have
confirmed that the proposed approach has tremendous potential
for further research to link with industrial applications.
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