Evolvable production systems and impacts on production planning

Akillioglu, Hakan; Onori, Mauro

doi:10.1109/isam.2011.5942328

Cited by 8 publications

(2 citation statements)

References 12 publications

(8 reference statements)

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“…Figure 7 shows how EPS can be utilized through incremental capacity planning. Instead of investing in capacity relying on long product life forecasts, the time to be forecasted can be minimized and the capacity can be extended in response to incrementally increasing demand (Akillioglu and Onori, 2011). In the figure the parameters used are c, capacity increment; t, targeted time period; a, slope (demand pattern parameter).…”

Section: Capacity Planningmentioning

confidence: 99%

Demand responsive planning: workload control implementation

Akillioglu

Ferreira

Onori

2013

Assembly Automation

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Purpose -Evolvable production systems enable fully reconfiguration capabilities on the shop floor through process-oriented modularity and multiagent-based distributed control. To be able to benefit architectural and operational characteristics of evolvable systems, there is a need of a new planning approach which links shop floor characteristics and planning operations. This paper seeks to address these issues. Design/methodology/approach -Evolvable production system has a structured methodology in itself. Consistent to this, a reference planning architecture is developed aiming to achieve agility on planning activities. Besides a workload control method is proposed and implemented as a part of the planning architecture. Findings -First applications of evolvable systems have been implemented through European research projects. Shop floor working principles and architectural characteristics are consistent to facilitate more agility on planning activities which are framed at a planning reference architecture called demand responsive planning. As an implementation case, an agent-based workload control method is proposed and implemented. The characteristics of EPS and proposed planning architecture enable continuous and dynamic workload control of the shop floor to be implemented. Originality/value -This paper presents a new planning model compatible with evolvable production systems targeting to agility to demand on planning and control activities benefiting shop floor enhancements of a fully reconfigurable system which enables to relax constraints imposed from production systems to planning. In addition, a continuous and dynamic workload control method is proposed and implemented.

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Section: Capacity Planningmentioning

confidence: 99%

Demand responsive planning: workload control implementation

Akillioglu

Ferreira

Onori

2013

Assembly Automation

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“…It offers a novel approach to deploy assembly systems in EPS, linking assembly processes to product design features by addressing the data requirements. Like other efforts, EPSs try to respond to the necessity of increasing trend of producing smaller batch sizes and tight production schedules, by offering a robust process plan that can provide solutions based on the available resources (Akillioglu and Onori, 2011; Chen et al , 2015; Onori et al , 2011; Onori and Barata, 2010). To be effective, agile knowledge transmission among product design and process planning in EPS definition levels of self-re-configurability and self-adapting is always economically and ecologically desirable (Maffei et al , 2009; Neves and Barata, 2009).…”

Section: Introductionmentioning

confidence: 99%

Object-oriented design of product assembly feature data requirements in advanced assembly planning

Khabbazi

Wikander

Onori

et al. 2018

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Purpose This paper introduces a schema for the product assembly feature data in an object-oriented and module-based format using Unified Modeling Language (UML). To link production with product design, it is essential to determine at an early stage which entities of product design and development are involved and used at the automated assembly planning and operations. To this end, it is absolutely reasonable to assign meaningful attributes to the parts’ design entities (assembly features) in a systematic and structured way. As such, this approach empowers processes such as motion planning and sequence planning in assembly design. Design/methodology/approach The assembly feature data requirements are studied and definitions are analyzed and redefined. Using object-oriented techniques, the assembly feature data structure and relationships are modeled based on the identified requirements as five UML packages (Part, three-dimensional (3D) models, Mating, Joint and Handling). All geometric and non-geometric design data entities endorsed with assembly design perspective are extracted or assigned from 3D models and realized through the featured entity interface class. The featured entities are then associated (used) with the mating, handling and joints features. The AssemblyFeature interface is realized through mating, handling and joint packages related to the assembly and part classes. Each package contains all relevant classes which further classify the important attributes of the main class. Findings This paper sets out to provide an explanatory approach using object-oriented techniques to model the schema of assembly features association and artifacts at the product design level, all of which are essential in several subsequent and parallel steps of the assembly planning process, as well as assembly feature entity assignments in design improvement cycle. Practical implications The practical implication based on the identified advantages can be classified in three main features: module-based design, comprehensive classification, integration. These features help the automation and solution development processes based on the proposed models much easier and systematic. Originality/value The proposed schema’s comprehensiveness and reliability are verified through comparisons with other works and the advantages are discussed in detail.

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