Bc. Fabien, THE DESIGN OF DWELL-RISE-DWELL CAMS WITH REDUCED SENSITIVITY TO PARAMETER VARIATION, Journal of the Franklin Institute, 332B(2), 1995, pp. 195-209
This paper presents a new approach to designing dwell-rise-dwell profi
les for cam follower systems. The cam profiles are designed such that
perturbations in the system parameters have a reduced influence on the
dynamic response. This is accomplished by minimizing the parameter se
nsitivity of output mass motion. The system parameters considered are
those that appear in the equation of motion, namely, the mass, spring
stiffness, damping coefficient, and the speed of cam rotation. The des
ign optimization problem is formulated as a linear quadratic optimal c
ontrol problem that is easy to solve. comparisons with a polydyne cam
design shows that the approach developed here yields a cam design that
has superior performance in terms of residual vibration, peak contact
stress, energy loss and the required preload force. The new design al
so exhibits also exhibits also exhibits better attributes despite poss
ible variations in the system parameters.