The use of redundancy to evaluate the manufacturing system total robustness: A quality approach

Abstract

This paper proposes a modeling method of these control laws for manufacturing system. The robustness for these categories of system is discussed. Our approach consists in managing the disturbances of the drifts type of quality of the product. The Intervals Constrained Petri Net (ICPN) are used for the modeling of the no temporal constraints. A methodology of construction of a robust control system generating the margins of passive and active robustness is elaborated. The redundancy of the robustness of the elementary parameters between passive and active leads us to define the ways ensuring the total robustness of the system.

Flexibility based Assessment of Production System Robustness

“…This is also the case with many concepts for the assessment of robustness (e.g. [13,14]). In Robust Design most cases these factors are only considered afterwards or without fully considering their qualifications.…”

“…Meepetchdee and Shah define the robustness of a system, in a akin way as its ability to perform its designated tasks despite disturbances [12]. A similar definition is offered by Telmoudi [13]. A similar understanding of robustness can also be found by Rossi, who defines robustness as the production systems ability to compensate deviations in the numbers of manufactured products within a given timeframe [14].…”

“…It should however be mentioned that this is only one definition for robustness and not all existing work on the subject can be limited to this perspective (e.g. [13,14]). …”

“…This is in order to provide an opportunity to reduce the relevant number of instances within any given subsystem down to an acceptable level and thus generating optimization problems that can be solved with well-established methods (e.g. [13,14,52]). Due to the integration of all the flexibility relevant criteria of the production factors the different flexibility levels as well as characteristics of each subsystem can easily be assessed and, following the logic of the self-similarity of the process chain instrument, aggregated to higher levels.…”

Robust control of a manufacturing system: Flow-quality approach

“…In counterpart, in his thesis, Dhouibi [7] extended a method contributing to a robust and reactive control of manufacturing systems with non temporal constraints so as to act face to disturbances of drifts quality type. Telmoudi et al [11] developed a methodology of construction of a control robust generating the margins of passive and active robustness of product quality.…”