Patent ID: 7860592
Filing Date: 2010-12-28
Classification: G05B,Y02P

Abstract:
1. A method for designing industrial products by using a computer, comprising: generating a three-dimensional clothoid curve by the computer; and designing a shape of said industrial products using the three-dimensional clothoid curve by the computer, wherein each of a pitch angle and a yaw angle in a tangential direction of said three-dimensional clothoid curve is given by a quadratic expression comprising of a curve length or a curve length variable, wherein the three-dimensional clothoid curve is generated using the following expressions: shows a positional vector at each point on the three-dimensional clothoid curve and its initial value, respectively, the expressions for the three-dimensional clothoid curve when implemented: assume that the length of the curve from a starting point is s and its whole length is h, said whole length being a length from the starting point to an end point, and produce a dimensionless value S, which is called the curve length variable; i, j and k are unit vectors in the x-axis, y-axis and z-axis directions, respectively; and the u is a unit vector showing a tangential direction of the curve at a point P; the E wherein the E