scholarly journals Study of Driving Torque through Dynamic Analysis of Robot

2018 ◽  
Vol 7 (3.7) ◽  
pp. 125
Author(s):  
Yeon Taek OH ◽  
. .
Keyword(s):  
Dynamic Characteristics ◽  
High Speed ◽  
Low Cost ◽  
Unit Cost ◽  
High Acceleration ◽  
Characteristics Analysis ◽  
Acceleration And Deceleration ◽  
Articulated Robot ◽  
Driving Torque ◽  
Dynamic Characteristics Analysis

These days, the interests on the low-cost handling robots are increasing because it is important to get down the unit cost of production to get the price competitiveness. The robot joint with simple mechanism is more suitable to implement the low-cost robot system as well known. The moving parts of robot have to be designed for simple and robust. But the dynamic characteristics analysis is induced by the robot links because they drive in high acceleration and deceleration. In this reason, the dynamic characteristics analysis of the high-speed robot is very important in the design process. In this paper, the study on robot driving torque analysis of a articulated robot has been done and the research results will be introduced   

Research on Dynamic Characteristics Analysis of the Whole Grinding Machine Tool Based on FEM

2012 ◽  
Vol 472-475 ◽  
pp. 2874-2878
Author(s):  
Peng Guan ◽  
Yu Tao ◽  
Wei Wang ◽  
Wan Shan Wang
Keyword(s):  
Machine Tool ◽  
Dynamic Model ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Joint Surface ◽  
Characteristics Analysis ◽  
Key Factor ◽  
Set Up ◽  
Grinding Machine ◽  
Dynamic Characteristics Analysis

Dynamic characteristics is the foundation of the dynamic design of the machine tool, while the key factor of establishing the accurate dynamic model of the machine tool is the treatment of the joint surface. In this paper, the whole machine tool model is built with the software PRO/ E, and the software MSC. Patran is used to mesh the finite element of super-high-speed grinder and set up the boundary conditions. Then Yoshimura method is used to determine the junction parameters and establish the dynamic model of the junction. The software MSC. Nastran is used to analyze the modal of the whole machine. At last, on basis of identifying the weaknesses of the structure of the machine tool, the paper provides a theoretical basis for the improvement of the machine tool design.

Dynamic Characteristics Analysis of Cable-Rib Tension Deployable Antenna

2016 ◽  
Author(s):  
Liu Ruiwei ◽  
Hongwei Guo ◽  
Zhang Qinghua ◽  
Rongqiang Liu ◽  
Tang Dewei
Keyword(s):  
Dynamic Characteristics ◽  
Structural Parameters ◽  
Element Model ◽  
Structure Design ◽  
Antenna Structure ◽  
Characteristics Analysis ◽  
New Type ◽  
Dynamic Characteristics Analysis ◽  
The Finite Element Model ◽  
Weight Dynamic

Balancing stiffness and weight is of substantial importance for antenna structure design. Conventional fold-rib antennas need sufficient weight to meet stiffness requirements. To address this issue, this paper proposes a new type of cable-rib tension deployable antenna that consists of six radial rib deployment mechanisms, numerous tensioned cables, and a mesh reflective surface. The primary innovation of this study is the application of numerous tensioned cables instead of metal materials to enhance the stiffness of the entire antenna while ensuring relatively less weight. Dynamic characteristics were analyzed to optimize the weight and stiffness of the antenna with the finite element model by subspace method. The first six orders of natural frequencies and corresponding vibration modes of the antenna structure are obtained. In addition, the effects of structural parameters on natural frequency are studied, and a method to improve the rigidity of the deployable antenna structure is proposed.

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