RT info:eu-repo/semantics/article
T1 A vrtual sensor for online fault detection of multitooth-tools
A1 Bustillo Iglesias, Andrés
A1 Correa, Maritza
A1 Reñones, Anibal
K1 virtual sensor
K1 Bayesian classifier
K1 industrial applications
K1 tool condition monitoring
K1 multitooth-tools
K1 Informática
K1 Computer science
AB The installation of suitable sensors close to the tool tip on milling centres is not possible in industrial environments. It is therefore necessary to design virtual sensors for these machines to perform online fault detection in many industrial tasks. This paper presents a virtual sensor for online fault detection of multitooth tools based on a Bayesian classifier. The device that performs this task applies mathematical models that function in conjunction with physical sensors. Only two experimental variables are collected from the milling centre that performs the machining operations: the electrical power consumption of the feed drive and the time required for machining each workpiece. The task of achieving reliable signals from a milling process is especially complex when multitooth tools are used, because each kind of cutting insert in the milling centre only works on each workpiece during a certain time window. Great effort has gone into designing a robust virtual sensor that can avoid re-calibration due to, e.g., maintenance operations. The virtual sensor developed as a result of this research is successfully validated under real conditions on a milling centre used for the mass production of automobile engine crankshafts. Recognition accuracy, calculated with a k-fold cross validation, had on average 0.957 of true positives and 0.986 of true negatives. Moreover, measured accuracy was 98%, which suggests that the virtual sensor correctly identifies new cases.
PB MDPI
SN 1424-8220
YR 2011
FD 2011-03
LK http://hdl.handle.net/10259/4263
UL http://hdl.handle.net/10259/4263
LA eng
NO Red de Supervisiony Diagnosis de Sistemas Complejos (DPI2009-06124-E) of the Spanish Ministry of Science and Innovation
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024