Title
A Simulation Based Approach To Detect Wear In Industrial Robots
Abstract
In this paper we simulate, detect, and locate wear in industrial robots operating over long time-periods on repetitive tasks. We simulate wear using the MATLAB robotics toolbox by increasing the Coulomb friction coefficient on select robot axes. Disturbance and measurement noise are included in each axis while computing the inverse and forward kinematics. To compare change across all configurations within a repetitive cycle, the output torque data is transformed into a normalized distribution sampled once every hour. We identify wear as significant change in torque values from normal operating conditions, and detect wear using principal component analysis; the source axis is located by cross-correlating the output data from all axes through time. Simulation results with a range of friction values tested for three different tasks across all axes show that wear detection on the basis of comparison with normal operating condition depends on the manipulator task, whereby onset of wear was detected in five out of six axes for one task and two out of six axes in the rest. Wear location was correctly identified in all successful detections except one.
Year
Venue
Field
2015
2015 INTERNATIONAL CONFERENCE ON AUTOMATION SCIENCE AND ENGINEERING (CASE)
MATLAB,Normalization (statistics),Torque,Control theory,Simulation,Forward kinematics,Artificial intelligence,Coulomb friction,Engineering,Robot,Principal component analysis,Robotics
DocType
ISSN
Citations 
Conference
2161-8070
0
PageRank 
References 
Authors
0.34
9
3
Name
Order
Citations
PageRank
V. Sathish100.34
srini ramaswamy233745.77
Sachit Butail3285.66