scholarly journals Evaluation of the Period of Sensors Motion Parameters of the Train

2018 ◽  
Vol 15 (1) ◽  
Author(s):  
Petr Filimonovich Filimonovich
Keyword(s):  
Spectral Method ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Spectral Representation ◽  
High Speed Trains ◽  
Acceleration And Deceleration ◽  
Motion Parameters

The choice of polling period sensors for measuring the speed and acceleration of the train can be produced using the spectral representation of functions of velocity and acceleration from time to time. Using the spectral method of determining the period of the survey, you can choose different value depending on the category of the train and its dynamic characteristics. For high-speed trains, the period of sensors is less than for trucks, since the latter are tightened by the transients during acceleration and deceleration.

Trajectory planning of a 4-RR(SS)2 high-speed parallel robot

Robotica ◽  
2022 ◽  
pp. 1-17
Author(s):  
Huipu Zhang ◽  
Manxin Wang ◽  
Haibin Lai ◽  
Junpeng Huang
Keyword(s):  
Trajectory Planning ◽  
Inverse Kinematics ◽  
High Speed ◽  
Movement Time ◽  
Parallel Robot ◽  
Acceleration And Deceleration ◽  
Moving Platform ◽  
Motion Parameters ◽  
Trajectory Interpolation ◽  
The Right

Abstract The trajectory-planning method for a novel 4-degree-of-freedom high-speed parallel robot is studied herein. The robot’s motion mechanism adopts RR(SS)2 as branch chains and has a single moving platform structure. Compared with a double moving platform structure, the proposed parallel robot has better acceleration and deceleration performance since the mass of its moving platform is lighter. An inverse kinematics model of the mechanism is established, and the corresponding relationship between the motion parameters of the end-moving platform and the active arm with three end-motion laws is obtained, followed by the optimization of the motion laws by considering the motion laws’ duration and stability. A Lamé curve is used to transition the right-angled part of the traditional gate trajectory, and the parameters of the Lamé curve are optimized to achieve the shortest movement time and minimum acceleration peak. A method for solving Lamé curve trajectory interpolation points based on deduplication optimization is proposed, and a grasping frequency experiment is conducted on a robot prototype. Results show that the grasping frequency of the optimized Lamé curve prototype can be increased to 147 times/min, and its work efficiency is 54.7% higher than that obtained using the traditional Adept gate-shaped trajectory.

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   

Battery Self-Traction System for High-Speed Trains

2020 ◽  
Vol 140 (5) ◽  
pp. 349-355
Author(s):  
Hirokazu Kato ◽  
Kenji Sato
Keyword(s):  
High Speed ◽  
High Speed Trains ◽  
Traction System

Evaluation of the Dynamic Characteristics of Coupled Double-Rotor Spindle System in High Speed Grinder

2012 ◽  
Vol 5 (3) ◽  
pp. 208-219
Author(s):  
C. H. Li ◽  
Q. Zhang ◽  
S. Wang ◽  
Y. C. Ding
Keyword(s):  
Dynamic Characteristics ◽  
High Speed ◽  
Spindle System

Downlink data transmission for high-speed trains in 5G communication systems

2020 ◽  
Vol 14 (18) ◽  
pp. 3175-3183
Author(s):  
Vahid Vahidi ◽  
Ebrahim Saberinia
Keyword(s):  
Data Transmission ◽  
Communication Systems ◽  
High Speed ◽  
High Speed Trains ◽  
5G Communication

Development of Magnesium Alloys for High Speed Trains in China

2016 ◽  
pp. 7-8
Author(s):  
Eric Nyberg ◽  
Jian Peng ◽  
Neale R. Neelameggham
Keyword(s):  
Magnesium Alloys ◽  
High Speed ◽  
High Speed Trains

Iterative Learning Operation Control of High-Speed Trains With Adhesion Dynamics

2021 ◽  
pp. 1-11
Author(s):  
Deqing Huang ◽  
Wanqiu Yang ◽  
Tengfei Huang ◽  
Na Qin ◽  
Yong Chen ◽  
...  
Keyword(s):  
High Speed ◽  
Iterative Learning ◽  
High Speed Trains ◽  
Operation Control
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