screw differential
1.Based on model of given feed drive dynamics, point to ball screw drive system and its motion differential equations, two fundamental steps in designing a sliding mode controller, that is the selections of a sliding surface and a Lyapunov function.
2.It utilizes at last Curve surface conjugation theory of differential geometry and normal iso-metric polygonal profile to prove the feasibility of algebra Archimedes screw on scroll compressor profile, And characteristic of Archimedes scroll profile, And has discussed the basic characteristic of the Archimedes scroll profile and processing method.
