摘要
以四连杆机械为例,其自由度是1,整个机构的质心只需一个独立参变数描述.故机构的质心对该参数的导数等于零即机构质量中心保持固定的充要条件.通过对线性方程组基础理论的巧妙利用,给出了四连杆在工作状态下质心保持稳定的几何特征.
Take the four-bar linkage for example, the freedom of motion is 1, and only one independent parameter is required in the description of the entire centroid of the mechanics. Therefore, that the differential coefficient of the mechanical eentroid compared with the parameter is zero is the necessary and sufficient condition to the maintaining of the stability of the mechanical centroid. With the tactful employment of the basic theory of linear equations set, the paper presents the geometrical features which are displayed with the stability of the centroid at the working state of the four-bar linkage.
出处
《数学的实践与认识》
CSCD
北大核心
2009年第13期114-119,共6页
Mathematics in Practice and Theory
关键词
四连杆
数学模型
导数
微分方程
线性方程组
four-bar linkage
mathematical model
differential coefficient
differential equation
linear equations set
