Path generation with dwells in the optimum dimensional synthesis of Stephenson III six-bar mechanisms

被引：21

作者：

Peon-Escalante, R. ^{[1
]}

Cuenca Jimenez, F. ^{[1
]}

Escalante Soberanis, M. A. ^{[2
]}

Penunuri, F. ^{[1
]}

机构：

[1] Univ Autonoma Yucatan, Fac Ingn, AP 150, Merida, Yucatan, Mexico

[2] Univ Nacl Autonoma Mexico, DEPFI, Secc Ingn Mecan, Mexico City, DF, Mexico

来源：

MECHANISM AND MACHINE THEORY | 2020年 / 144卷

关键词：

Six-bar mechanisms; Dual numbers; Differential evolution; SPHERICAL 4R MECHANISM; DIFFERENTIAL EVOLUTION; 4-BAR LINKAGE; ERROR; TASKS;

D O I：

10.1016/j.mechmachtheory.2019.103650

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The optimal dimensional synthesis for Stephenson III six-bar linkages, planar and spherical, is presented. The requirement for dwells of the output link and the path generation task are also addressed. We propose a formulation for the synthesis in which the velocity of the output link is calculated by using dual functions. The condition for dwell is obtained through the minimization of the angular velocity, using the evolutionary algorithm known as Differential Evolution. We perform a numerical comparison between the use of the dual numbers and finite differences for computing the velocity and acceleration coefficients of the output link for the spherical case. The results exhibit the importance of having a precise method for computing derivatives. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：14

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