Linköping Electronic Conference Proceedings
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Modeling and identification of the Quanser Aero using a detailed description of friction and centripetal forces
Get PDFThis paper deals with the modeling and identification of the Quanser Aero. The Quanser Aero is an aerospace laboratory setup designed for teaching aerospace concepts. Two propellers generate thrust and allow the user to control its dynamic response. The ability to lock axes individually makes it capable of abstracting a variety of aerospace systems, such as half-quadrotor, 1-Degree of freedom (DOF), vertical take-off and landing (VTOL), and 2-DOF helicopter. This paper focuses on the latter of these modes. In this configuration, the Quanser Aero can produce different pitch and yaw angles based on the angular velocity of the propellers, which produces an interesting identification and control problem, due to the presence of nonlinearities and significant cross-couplings between different variables. In this paper, a nonlinear model derived from Newton’s law and Euler’s rotational dynamics is obtained, and the unknown model parameters are identified through an experimental approach, with the model validated through real-time testing. In particular, it is shown that by means of a more detailed description of the friction, which includes the Karnopp’s model that keeps the sum of the magnitude of all forces equal to zero until the applied forces are strong enough to overcome the friction force, and of the centripetal forces acting on the Aero, significant improvements are obtained when compared to state-of-the-art models. These improvements may hold the potential to enhance the performance of advanced nonlinear model-based control algorithms for this device
Full SPEED ahead: Säker och effektiv utryckningskörning genom simulatorbaserad träning
No full textDet pågående projektet SPEED (Swedish Project for Efficient Emergency Driving) presenteras. Syftet är att i samverkan med ambulansverksamheter och övriga blåljusslag utveckla simulatorbaserad träning, speciellt i syfte att träna upp blivande blåljusförare i att hantera risksituationer i trafiken under stresspåslag. Simulatormetodiken möjliggör (1) att detta kan göras utan de fysiska risker som finns i verklig trafik; (2) att risksituationerna kan styras så att det säkerställs att alla blivande utryckningsförare exponeras för dem; (3) att risksituationerna kan repeteras; och (4) att föraren kan få omedelbar och tydlig återkoppling för att lära av sina egna misstag. Studiens experimentgrupp ska få träna på ett urval med specifika risksituationer för utryckningskörning, medan kontrollgruppen får motsvarande träning i simulator, fast endast med likadana trafiksituationer som ingår i träning för personbilskörkort. Skillnaden mellan specifik träning för utryckningskörning och personbilskörning mäts med ett simulatorscenario där dels ett antal av liknande, men ej identiska, trafiksituationer som ingått i träningen ingår, dels ett antal kritiska trafiksituationer som inte ingått i tidigare träning. Projektet genomförs i samverkan med simulatorföretagen Skillster och Tenstar, som ska implementera resultat och lärdomar i sina produkter
Selection of rural villages for volunteer training in emergency response
No full textMany rural areas in Sweden are sparsely populated and coverage from emergency services is weak. However, with the help of the professional emergency services (e.g., fire and rescue services) some civilians (called volunteers hereon) in these areas receive training in CPR, first aid, and required actions when a person first arrives at a fire, traffic accident, or drowning incident. In case of an emergency, simultaneously with the dispatch of emergency services, these volunteers are alerted through an SMS, or via an app, on their mobile phones. The trained volunteers are primarily assumed to provide help in the vicinity of their living areas (i.e., their own villages). However, depending on the location of the villages compared to their neighboring villages, it might be possible for these volunteers to provide help to their neighboring villages as well. As the professional emergency resources have limited budget, equipment, and manpower, it is impossible to include all villages and small population centers in the volunteer initiative. Thus, it is important to select the areas that gives most benefit for the response system. Nevertheless, the problem of selecting how many and which villages or population areas to train and equip is not always trivial.
In this study, we use optimization and propose an integer linear programming model to determine the number and location of population areas/villages that should be included in the volunteer initiative for emergency response, given a certain budget, so that the best possible emergency response coverage is achieved
Exploring Storytelling Approach with Service Design to Create Empathetic Experiences for Adolescents Living with HIV: A Case Study
Get PDFIn India, a significant number of children live with HIV. Due to a lack of awareness and social stigma, they do not make timely and responsible life decisions around intimacy and HIV status disclosure. In this paper, we share our experience of collaborating with Prayas Health Group (PHG), a prominent Non-Government Organization in Maharashtra (India) that is dedicated to enriching the lives of HIV patients. We used Service Design methods to create a solution that disseminates essential information and enables Adolescents Living with HIV (ALHIV) to make informed life decisions. The solution is an interactive story media where adolescents make decisions around in-design encounters that parallel with possible real-life encounters. As a result, they learn more about the subject and its implications, leading to improved real-life decision-making. This paper demonstrates the orchestration of human and technology touchpoints through multiple dynamic and choice-based scenarios
A user experience analysis for senior citizens on mobile shopping service: case study of big three companies of South Korea
Get PDFThis research is a case study on user experience analysis for senior citizens on mobile shopping services, focusing on the big three companies of South Korea. The research aims to broaden the view of service designers in creating inclusive design for senior citizens globally, by conducting user experience analysis for all generations, including senior citizens. The study consists of literary research, heuristic evaluation based on user experience design principles, and user interview for a deeper and on-site understanding of senior citizens’ user experience. The results suggest key considerations for the user experience design of senior citizens and common challenges faced by the user group
Who serves who serves you?
Get PDFIn contemporary society, the service has taken up more and more space and, although part of its value is still linked to productive work, it is already possible to see that the field of non-productive and reproductive work begins to absorb a significant part of the social workforce. This process has generated, on the one hand, a demand for professionals able to design good services and, on the other hand, the precariousness of the work of service providers. This article aims to present a reflection on the relationship between these two categories of professionals: those who design and those who execute the service, both working class specimens, but different in their interests and working conditions. Thus, this work brings provocations that can be condensed into a single question: What is the role of the Service Designer in the face of the precariousness of the work of service providers
Banana fiber and its potential for socially sustainable innovation through design
Get PDFWhich key questions should design be addressing in a context of rapid environmental degradation and social inequality? Prompted by this question, the present article investigates reflective practice (Schön, 1983) and its potential for socially sustainable innovation when applied to an experience with a banana-fiber craftworker located in Brazil's southern region, in a town known for its tourist industry. Our reflections here are based on a literature review and fieldwork visits to focus on aspects arising from qualitative, participant-observational, dialogic research. Further research questions are posed in terms of exploring the socially sustainable characteristics of a product-development approach to this natural fiber and related craftwork in Brazil, aligned with empowerment-driven design practices to generate new products and services with higher levels of socially sustainable potential
Service Design for a systemic and dynamic understanding on well-being
Get PDFAs the world has become more interconnected and complex, there is an increasing awareness of the importance of considering well-being collectively. This paper aims to explore how service design can contribute to the shift from an individual well-being perspective to a more systemic and dynamic understanding. The authors first conducted literature reviews about three key well-being constructs: resource-challenges equilibrium (individual well-being), balanced centricity in value networks (network well-being), and actor ecosystems (community well-being). Using these constructs as lenses, the authors have then selected three service design interventions to describe service design approaches and contributions at different well-being levels. Finally, the authors suggested developing a holistic and integrated service design approach to link individuals with network and community well-being for a growing service ecosystem
Citizens’ wishes and issues for urban mobility services of Rio de Janeiro
Get PDFSmart cities have been the target for the development of several technologies, notably in the field of urban mobility. However, issues related to citizens' commuting need to be addressed beyond technology but focusing on the population and the context in which they live. This paper aims to discuss citizens' wishes and issues for the city of Rio de Janeiro to think about how we can achieve the so-desired smart city. From design workshop sessions with citizens, we intended to understand, through a dynamic in thinking about wishes for a short- and long-term future, which solutions we can give for the future of urban mobility considering their particularities. Several points were raised regarding governance, infrastructure, safety and security, and transportation modes, as well as technologies that could benefit citizens. The results may contribute to developing innovative service design proposals for urban mobility suitable for city contexts similar to the city studied
Designing Ourselves and Our World: A Designer-Weaver's Perspective on Services
Get PDFThis paper argues that design, particularly service design, plays a significant role in shaping our world by constructing and reconstructing our understanding of it. Rather than a mere means to an end, design is a tool for controlling and producing meaning. Service design plays a crucial role in this process, as it mediates interactions between people and their everyday contexts through services. Design can be seen then as a way of generating culture. By exploring a more systemic approach, service designers can better understand how services shape people's lives and address underlying narratives and discourses that frame relationships between people and their lifeworlds. The designer-weaver metaphor is introduced as a powerful image for understanding the role of the designer in shaping reality. By weaving narratives and discourses together, designers can create new realities. If a better world is to be designed, a better way of designing ourselves is needed