Computational Recognition of Functional Parameters of Surfaces for the Kinematic Design of Window Regulator Systems

The paper deals with the choice of the motion parameters for a window regulator system. This problem is affected by aesthetic, geometric and functional constraints. A geometric formulation of the topic is discussed in the first part of the paper: types of surfaces suitable to define proper motion parameter are systematically listed. Then, computational procedures for the best fit of given points to some of such surfaces are discussed in details. They are applied to two numerical examples, one of known mathematical properties, the second taken from a real design problem. In the second part of the paper further design constraints are introduced and the consequent computational procedures described. Finally three different design solutions for the real problem are presented and evaluated from an engineering point of view.