Design of Mechanisms to Draw Trigonometric Plane Curves
Design of Mechanisms to Draw Trigonometric Plane Curves
复制标题
三角平面曲线绘制机构的设计
DOI:
10.1115/1.4035882
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Michael McCarthy, J.
中科院分区:
文献类型:
--
作者:
Liu, Yang;Michael McCarthy, J.
This paper describes a mechanism design methodology that draws plane curves which have finite Fourier series parameterizations, known as trigonometric curves. We present three ways to use the coefficients of this parameterization to construct a mechanical system that draws the curve. One uses Scotch yoke mechanisms for each of the terms in the coordinate trigonometric functions, which are then added using a belt or cable drive. The second approach uses two-coupled serial chains obtained from the coordinate trigonometric functions. The third approach combines the coordinate trigonometric functions to define a single-coupled serial chain that draws the plane curve. This work is a version of Kempe's universality theorem that demonstrates that every plane trigonometric curve has a linkage which draws the curve. Several examples illustrate the method including the use of boundary points and the discrete Fourier transform to define the trigonometric curve.
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