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Optimal Sensor Placement for Thermo‐Elastic Coupled Machine Models
Author(s) -
Naumann Andreas,
Herzog Roland
Publication year - 2021
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.202000255
Subject(s) - dependency (uml) , coupling (piping) , finite element method , computer science , process (computing) , chip , point (geometry) , machine tool , mechanical engineering , engineering , structural engineering , mathematics , artificial intelligence , telecommunications , geometry , operating system
Accuracy requirements for machine tools demand an accurate positioning of the tool center point. Due to the heat sources, for example the friction and heat loss of motors, a machine can undergo complicated deformations during operation. While the location of mounted sources are known in advance, there are also process dependent sources, like hot chips after chip off. Furthermore many material parameters and most coupling parameters are not known exactly, or have an unknown temperature dependency. We consider a coupled thermo‐elastic finite element model of a simplified machine tool. We include uncertain heat sources and exchange parameters and present an optimal sensor placement approach to capture the sources.