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Two-phase methodology for smart reconfigurable assembly systems
Published in Paulo Jorge da Silva Bartolo, Fernando Moreira da Silva, Shaden Jaradat, Helena Bartolo, Industry 4.0 – Shaping The Future of The Digital World, 2020
F. Sunmola, H. Alattar, K. Trueman, L. Mitchell
Reconfigurability in this context is a purposeful change to assembly systems through the addition, removal, or rearrangement of assembly operations, processes, functions and system components. The benefits of re-configurability include economies of scale, opportunities to optimally accommodate product / component change, product variety handling capability, and lead time reduction. Reconfigurable manufacturing systems have key characteristics that are suited for addressing the identified challenges. The characteristics are (Bortolini et al. 2018): a) modularity, the compartmentalisation of operational functions into units, b) integrability, the ability to connect cells/modules rapidly and precisely, c) diagnosability, the ability to provide a correct diagnosis so as to rapidly attend to the diagnosis, d) convertibility, the ability to easily transform functionalities towards meeting new requirements, e) customisation, the ability to modify system to suit a particular individual or task leading to customised flexibility, and f) scalability, the capacity of the manufacturing system to be changed in size or scale.
Software-Defined Radio
Published in Rajeshree Raut, Ranjit Sawant, Shriraghavan Madbushi, Cognitive Radio, 2020
Rajeshree Raut, Ranjit Sawant, Shriraghavan Madbushi
A software-defined radio (SDR) is a radio in which some or the entire physical layer functions are software defined [1]. Various definitions can be found to depict SDR, otherwise called software radio. Essentially, SDR is characterized as a radio in which a few or whole physical layer capacities are programming characterized. In SDR radio functionalities such as signal processing, signal generation, modulation/demodulation, and signal coding is implemented in software rather than the hardware as in conventional radio systems. The software realization results in reconfigurability and high amount of flexibility. Further, this results in other advantages such as modification in broadcast parameters, change in communication protocol, ability to alter channel assignments, and communication services. In short, SDR is considered as the technology enabler for cognitive radio (CR). SDR is also called as a software radio. The SDR dates back to the time when programming was first utilized inside radio and radio innovation.
High-Performance and Customizable Bioinformatic and Biomedical Very-Large-Scale-Integration Architectures
Published in Tomasz Wojcicki, Krzysztof Iniewski, VLSI: Circuits for Emerging Applications, 2017
Yao Xin, Benben Liu, Ray C.C. Cheung, Chao Wang
The FPGA is an attractive solution to enlarge the diversity of applications. An FPGA consists of a large array of configurable logic blocks, block random-access memory (RAM), digital signal processing blocks, and input/output blocks [25]. The reconfigurability makes it suitable to a variety of applications. Containing a massive amount of programmable logic, FPGAs are able to provide different levels of parallelism: multiple processing elements (PEs) can be created in one single chip and work at the same time; dataflows between different operators can be controlled and streamed clock by clock; efficient pipeline architectures of variable depth are supported; on-chip memory reduces the bandwidth bottleneck for memory access. Besides, the FPGA is also a competitive candidate in embedded applications because of its power efficiency. All these properties have guaranteed the unshakable position of FPGAs in HPC community.
Proposition of a software-assisted methodology to solve safety issues in reconfigurable assembly systems in a short time
Published in International Journal of Computer Integrated Manufacturing, 2023
Thierry Berger, Thérèse Bonte, Yassine Idel Mahjoub, Yves Sallez
This ‘safety bubble’ design must fulfill several requirements covering safety, reconfigurability, and accessibility: Req#1 (Safety aspect): The approach used must ensure human safety in all cases and respect safety standards.Req#2 (Reconfigurability/programmability aspect): The approaches and tools retained must be easily programmable to allow easy reconfiguration. The systematic use of ‘rigid’ solutions (e.g. permanently fixed barriers) is prohibited.Req#3 (Reconfigurability/ease of deployment aspect): The safety solutions retained must allow quick deployment in situ to drastically reduce the safety reconfiguration time.Req#4 (Accessibility aspect): Safe open access to the robotized workstations must be provided to facilitate interventions.
A framework to manage reconfigurability in manufacturing
Published in International Journal of Production Research, 2018
Alessia Napoleone, Alessandro Pozzetti, Marco Macchi
Manufacturing firms are facing the challenge of surviving in the current context characterised by unpredictable and frequent market changes and the demand for products with shortened life cycles (Koren, Wang, and Gu 2016). The fact that market is increasingly demanding products variations has led to the concept of evolvable product families (ElMaraghy 2007). In other words, the products variations are increasing in scope and frequency. In order to manufacture new/changed product families, firms need to change one or more processes and rearrange resources. In this scenario, manufacturing firms need to develop the reconfigurability capability (Shaik, Kesava Rao, and Rao 2014). Reconfigurability is the ability to repeatedly change and/or rearrange the components of a system in a cost-effective way, to meet new environmental and technological changes (Setchi and Lagos 2004; Abdi 2009b). Recently, reconfigurability is also perceived as a relevant paradigm in order to meet current impelling needs in terms of economic, environmental and social sustainability. For example, according to Dubey et al. (2017), manufacturing systems with higher reconfigurability provide better environmental performance (Garbie 2014; Dubey, Gunasekaran, and Chakrabarty 2015; Dubey et al. 2017).
Design of integrated manufacturing information systems for reconfigurability and adaptability by modularizing the system architecture
Published in International Journal of Computer Integrated Manufacturing, 2023
Ali Mollajan, Fatemeh Hamedani-KarAzmoudehfar, Afshin Ashofteh, AmirHossein Shahdadi, Seyed Hossein Iranmanesh
According to the literature of systems engineering, the capability of a system architecture that enables the system to dynamically change and/or rearrange the constituting components is referred to as the attribute of ‘reconfigurability’ (Wasson 2015). The characteristic of reconfigurability is about the reconfigurable capability of a system so that behaviour of the system can be changed by reconfiguration. Reconfigurability is, in fact, an inherent design trait of a system. From systems engineering point of view, the ‘reconfigurability’ is regarded as a system requirement, and therefore, needs to be established during conceptual phase of the system development process (Buede and Miller 2016; Enos, Farr, and Nilchiani 2019).