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在平面四杆机构按四个或五个精确位置的综合中,以及一些更复杂的连杆机构(如带停歇的六杆机构)的综合中,要用到园点曲线和中心曲线,即所谓布氏曲线(Burmester)。目前国内一些资料上介绍了一些绘制布氏曲线的作图法,这些方法的共同缺点是过程繁复、精度不高。有的资料上出了解析法,但由于涉及了本来可以回避开的极点、转动角的概念,而显得繁杂。本文介绍一种计算园点曲线和中心曲线的公式,并给出了用BASIC算法语言编写的计算源程序。在130计算机上用十几分钟即可算出这两个曲线的点的座标。
In a combination of a planar four-bar mechanism at four or five precise positions, as well as some more complex linkages (such as a six-bar mechanism with a rest), a curve of the center and a center of the curve are used, Burmester. At present, some domestic data introduces some drawing methods for drawing Brinell curves. The common disadvantage of these methods is complicated process and low accuracy. Some of the information on the analytic method, but because it involves the pole can be avoided, the concept of turning angle, which appears complicated. This paper introduces a formula for calculating the curve of the central point and the center curve, and gives the calculation source program written in BASIC algorithm language. In 130 computer with ten minutes to calculate the coordinates of the two points of the curve.