by Thorben Kaul, Tobias Meyer, Walter Sextro
Abstract:
State-of-the-art mechatronic systems offer inherent intelligence that enables them to autonomously adapt their behavior to current environmental conditions and to their own system state. This autonomous behavior adaptation is made possible by software in combination with complex sensor and actuator systems and by sophisticated information processing, all of which make these systems increasingly complex. This increasing complexity makes the design process a challenging task and brings new complex possibilities for operation and maintenance. However, with the risk of increased system complexity also comes the chance to adapt system behavior based on current reliability, which in turn increases reliability. The development of such an adaption strategy requires appropriate methods to evaluate reliability based on currently selected system behavior. A common approach to implement such adaptivity is to base system behavior on different working points that are obtained using multiobjective optimization. During operation, selection among these allows a changed operating strategy. To allow for multiobjective optimization, an accurate system model including system reliability is required. This model is repeatedly evaluated by the optimization algorithm. At present, modeling of system reliability and synchronization of the models of behavior and reliability is a laborious manual task and thus very error-prone. Since system behavior is crucial for system reliability, an integrated model is introduced that integrates system behavior and system reliability. The proposed approach is used to formulate reliability-related objective functions for a clutch test rig that are used to compute feasible working points using multiobjective optimization.
Reference:
Kaul, T.; Meyer, T.; Sextro, W.: Formulation of reliability-related objective functions for design of intelligent mechatronic systems. SAGE Journals, volume Vol. 231(4), 2017.
Bibtex Entry:
@ARTICLE{Kaul2017,
author = {Kaul, Thorben AND Meyer, Tobias AND Sextro, Walter},
title = {Formulation of reliability-related objective functions for design
of intelligent mechatronic systems},
journal = {SAGE Journals},
year = {2017},
volume = {Vol. 231(4)},
pages = {390 - 399},
abstract = {State-of-the-art mechatronic systems offer inherent intelligence that
enables them to autonomously adapt their behavior to current environmental
conditions and to their own system state. This autonomous behavior
adaptation is made possible by software in combination with complex
sensor and actuator systems and by sophisticated information processing,
all of which make these systems increasingly complex. This increasing
complexity makes the design process a challenging task and brings
new complex possibilities for operation and maintenance. However,
with the risk of increased system complexity also comes the chance
to adapt system behavior based on current reliability, which in turn
increases reliability. The development of such an adaption strategy
requires appropriate methods to evaluate reliability based on currently
selected system behavior. A common approach to implement such adaptivity
is to base system behavior on different working points that are obtained
using multiobjective optimization. During operation, selection among
these allows a changed operating strategy. To allow for multiobjective
optimization, an accurate system model including system reliability
is required. This model is repeatedly evaluated by the optimization
algorithm. At present, modeling of system reliability and synchronization
of the models of behavior and reliability is a laborious manual task
and thus very error-prone. Since system behavior is crucial for system
reliability, an integrated model is introduced that integrates system
behavior and system reliability. The proposed approach is used to
formulate reliability-related objective functions for a clutch test
rig that are used to compute feasible working points using multiobjective
optimization.},
doi = {10.1177/1748006X17709376},
keywords = {Integrated model, reliability, system behavior, Bayesian network,
multiobjective optimization},
owner = {ekubi},
timestamp = {2017.09.04}
}