The law of motion of the driven link of the mechanism should be chosen based on the requirements for the operation of the mechanism: general (for lifting and lowering sections, displacement, speed and acceleration at the beginning and end of the interval correspond to the set values); due to the nature of the diagram of movement of the driven link and closure of the highest kinematic pair cam — roller; determining the type of functions of ideal movements, speeds and accelerations, as well as the technological load and its derivatives, not at the boundaries of the interval of single-digit displacements, but at its individual sections.

In the works, the dynamic constants of displacement A_g, velocity B_g, acceleration C_g, and kinetic power D_g are used as criteria for choosing the law of motion.These dynamic constants are introduced for the run-up period C_g1 and D_g1 of the run-out C_g2, and D_g2 and at the end of the forced displacement interval A_g1, B_g3, C_g3, D_g3. Additionally, dynamic constants (A_g and B_g1) are introduced in the range of movement of the driven link from 0 to Ymax, and the constant Bg1 is introduced in the range of movement from U_max to Y.