scholarly journals Dynamic Characteristics Analysis for the Online Monitoring System Designing KTX MRU and Improvement of the Stability Related Variable High Speed

2013 ◽  
Vol 23 (4) ◽  
pp. 301-307
Author(s):  
Byung Su Park ◽  
Jin Woo Kim ◽  
Sang Rak Choi ◽  
Young Chun Song
Keyword(s):  
Monitoring System ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Online Monitoring ◽  
Related Variable ◽  
Characteristics Analysis ◽  
Online Monitoring System ◽  
The Stability ◽  
Dynamic Characteristics Analysis

The Monitoring System for Stability of CNC Machining Based on cDAQ and LabVIEW

2014 ◽  
Vol 1039 ◽  
pp. 177-182
Author(s):  
Man Meng ◽  
Wen Jun Zhang ◽  
Peng Chong Wang ◽  
Denis Niedenzu ◽  
Ying Zhong Tian
Keyword(s):  
Monitoring System ◽  
Online Monitoring ◽  
Cnc Machining ◽  
Machining Process ◽  
Depth Of Cut ◽  
Feed Speed ◽  
Online Monitoring System ◽  
Main Factors ◽  
The Stability

In recent years, researching the stability of the CNC machining process is a hotpot in CNC industry. Based on cDAQ and labVIEW, online monitoring system is presented, meanwhile, both software structure and hardware structure are introduced in detail. Researches show that vibration and pressure are the main factors for the quality of the flatness. By studying the relative vibration between the spindle and the platform in the Z axis direction, as well as the shifty pressure that tool works on the flatness of the workpiece, four experiments are designed in this paper under different technological conditions including free moving, Axial Depth of cut, speed and feed speed, which verify the reliability of the online monitoring system.

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.

A Review on the Advancement of Online Monitoring System for Cellulosic Ethanol Production

2015 ◽  
Vol 1113 ◽  
pp. 751-756
Author(s):  
Rosmaria Abu Darim ◽  
Amizon Azizan ◽  
Jailani Salihon
Keyword(s):  
Renewable Energy ◽  
Monitoring System ◽  
Cellulosic Ethanol ◽  
Transfer Rate ◽  
Fermentation Process ◽  
Online Monitoring ◽  
Environmental Concern ◽  
Oxygen Transfer Rate ◽  
Sugar Fermentation ◽  
Online Monitoring System

Bioethanol is mainly produced by sugar fermentation process. Due to global demand on energy for transportation and environmental concern, biofuels as renewable energy in replacing petrol, the non-renewable energy source, has come into picture. Utilization of lignocellulosic biomass such as woody biomass (trees), herbaceous biomass (grasses) and waste cellulosic materials (solid waste) could be used in replacing starch (such as corn and potato) as source of sugar in producing bioethanol. Recently, study on cellulosic ethanol was focussing on fermentation process using ethanologenic strain such as engineered Escherichia coli and Saccharomyces cerevisiae. Invasive method in the study during fermentation may lead to uncertain or unwanted screening strategies or metabolic pathways. This paper reviews about the online monitoring system used by researchers in order to study the growth kinetics of ethanologenic strain. Online monitoring system for the Oxygen Transfer Rate (OTR) and Carbon dioxide Transfer Rate (CTR) is found to be the important method to study kinetic model of ethanologenic strain, thus increasing metabolic yields with optimum design condition.

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