| 1. |
- Johansson, Pierre, 1986, et al.
(författare)
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Enhancing Future Assembly Information Systems : Putting Theory into Practice
- 2018
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Ingår i: Procedia Manufacturing. - : Elsevier BV. - 2351-9789. ; 17, s. 491-498
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Tidskriftsartikel (refereegranskat)abstract
- The manufacturing industry is in a changing state where technology advancements change the mindset of how manufacturing systems will function in the future. Industry 4.0 provides manufacturing companies with new methods for improved decision-making processes and dynamic process control. Despite this ambition, the manufacturing industry is far away from implementing this approach in practice. Assembly information systems will play an even more vital role enabling information transfer from product design to shop floor assembly in the future. To prepare the industry for these changes that are foreseen and for those that are yet to be discovered, a learning factory environment is vital. Such an environment is intended to support the industry during the development of assembly information systems. This paper presents an industrial demonstrator which incorporates well-known methods for improving assembly work stations with the perspective on assembly information systems. These methods are still not widely used in manual assembly intense manufacturing companies. This demonstrator illustrates how established theories can be practically used when designing future assembly information systems. The demonstrator will be used to validate functionalities and requirements for future assembly information systems.
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| 2. |
- Johansson, Pierre, 1986
(författare)
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Future Assembly Information Systems - Redefining the Manufacturing Systems of Tomorrow
- 2018
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Product variety continues to increase as the manufacturing industry introduces customized products and services to address the varying demands of their customers. In the manufacturing industry, it is common for large and global manufacturing companies to grow through mergers and acquisitions. As a consequence, these companies have hard times to find proper information systems integration strategies and to find commonality in their product portfolios. The introduction of Industry 4.0 kick started the digitalization journey that permeates society. Despite the digitalization initiatives, the manufacturing industry has fallen behind in terms of technology introduction in manufacturing systems. In the spirit of Industry 4.0, the manufacturing industry needs practical support on how to prioritize the development of future manufacturing systems. The objective of this thesis is to expand the knowledgebase about the impact of the digitalization in the manufacturing industry. This thesis presents a current state analysis of the challenges of handling assembly information in manual assembly intense manufacturing companies. The thesis also presents critical aspects to overcome the identified challenges and aims to support manufacturing companies in prioritizing initiatives and in making proper preparations for starting the digital transformation. This thesis is based on three case studies conducted between 2016 and 2017. The case studies show that there are many challenges that the manufacturing industry is currently facing that makes it difficult to create smart manufacturing systems. The result of the thesis is intended to be used as input when deploying new assembly information systems to assure high flexibility and operability. Future assembly information systems will allow more customization towards the intended end-user (e.g. operator and engineer), increased automation and data-based decision-making. On basis of the current challenges and the identified critical aspects, an industrial demonstrator has been developed to be used for validation of several design principles that have been formulated. The demonstrator will be tested by real operators during the spring of 2018 and the result will be used to spread knowledge of the impact of enhanced assembly information systems.
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| 3. |
- Svensson, Ida-Maria, 1988, et al.
(författare)
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Microwave photon generation in a doubly tunable superconducting resonator
- 2018
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Ingår i: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 969:1
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Konferensbidrag (refereegranskat)abstract
- We have created a doubly tunable resonator, with the intention to simulate relativistic motion of the resonator boundaries in real space. Our device is a superconducting coplanar-waveguide microwave resonator, with fundamental resonant frequency ω 1 / (2 π ) ~ 5 GHz. Both of its ends are terminated to ground via dc-SQUIDs, which serve as magnetic-flux-controlled inductances. Applying a flux to either SQUID allows the tuning of ω 1 / (2 π ) by approximately 700 MHz. Using two separate on-chip magnetic-flux lines, we modulate the SQUIDs with two tones of equal frequency, close to 2 ω 1 . We observe photon generation, at ω 1 , above a certain pump amplitude threshold. By varying the relative phase of the two pumps we are able to control this threshold, in good agreement with a theoretical model. At the same time, some of our observations deviate from the theoretical predictions, which we attribute to parasitic couplings resulting in current driving of the SQUIDs
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