Application of Mini-Max Method for Trajectory Planning of PUMA-560 using Cubic B Spline Interpolation Technique for Jerk Minimization

2021 ◽  
Author(s):  
B G Shreyas Bharadwaj ◽  
L Vaishnavi ◽  
D Purrab ◽  
M Aruna Devi ◽  
C P S Prakash
Keyword(s):  
Trajectory Planning ◽  
Spline Interpolation ◽  
B Spline ◽  
Interpolation Technique ◽  
Spline Interpolation Technique

Multi-Axle Moving Train Loads Identification on Continuous Bridge from Bridge Displacement Responses

2012 ◽  
Vol 239-240 ◽  
pp. 670-674
Author(s):  
Yi Wang ◽  
Cong Shuang Luo
Keyword(s):  
Spline Interpolation ◽  
Time History ◽  
Element Model ◽  
Cubic Spline ◽  
Dynamic Displacement ◽  
Cubic Spline Interpolation ◽  
Influence Line ◽  
Interpolation Technique ◽  
Spline Interpolation Technique ◽  
Moving Train

A new method for multi-axle moving train loads identification on continuous bridge is presented in this paper. In order to improve the accuracy and efficiency for moving loads identification, both cubic spline interpolation technique and dynamic displacement influence line technique were employed. The time history displacements of the measurement stations under unit force were calculated with cubic spline interpolation technique based on the finite element model of the bridge. The dynamic displacement influence line was obtained to be used for identifying the moving train loads with simulated annealing genetic algorithm by minimizing the errors between the measured displacements and the reconstructed displacements from the moving train loads. A series of comparative studies were carried out to investigate effects of different span numbers with the same length, different length with the same span number and measurement noise on the proposed method. The result shows that the proposed method is an accurate and efficient method for multi-axle moving train loads identification on continuous bridge.

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