The sinusoid and polynomial curve are the curves with well performance

and applied to the high speed automatic machine.The motion curve and features of them are similar.In the design

the user is always puzzled by how to correctly select a curve.Taking the quintic polynomial

sepetic polynomials

sinusoid and modifidesine as example to study and analyze the sinusoid and polynomial curve based on the kinematics and dynamics

including the influence of the pressure angle

cam mechanism efficiency

cam mechanism contact stress

and input torque and the analysis of the curve dynamic characteristic

and providing the theoretical basis for curve selection.