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  • 1.
    Andersson, Magnus
    et al.
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    Rylander, David
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    Wicked Cases and Late Binding in System of Systems2022Inngår i: 2022 17th Annual System of Systems Engineering Conference, SOSE 2022, Institute of Electrical and Electronics Engineers Inc. , 2022, s. 354-359Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Systems of Systems is being applied in ever more complex contexts. This paper reports findings from a city logistics initiative. As many other environmental challenges, this setting can be characterized as 'wicked', e.g. the organizations that need to be involved solving the issues are contributing causes and there is no obvious single authority able to make decisions. Our findings suggest that such settings lead to vagueness and 'late binding' of key actors and incentives making the early modelling phases highly challenging. Supplementing the wave model of SoS development, we describe specific coping mechanisms for such settings including designing for multiple SoS archetypes and identifying and prioritizing archetype-generic capabilities. 

  • 2.
    Cederstav, Fredrik
    et al.
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    Wandel, Sten
    Lund University, Sweden.
    Segerborg-Fick, Ann
    Ecoloop, Sweden.
    Rylander, David
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    Asp, Thomas
    Swedish Transport Administration, Sweden.
    Ranäng, Sara
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    High capacity city transport with intelligent access - A Swedish case study of transporting excavated material2022Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This project studies how the HCT-concept (High Capacity Transport) can be applied in cities, by performing pilots in Varberg and Stockholm. The project will test the hypothesis that the HCT-concept will improve both productivity and transport efficiency and thereby reduce CO2 by up to 40%. The pilots include tests of new optimized trucks and new concepts with connected trucks, road machines and bridges. Demonstration of digital access control including geofencing of speed and routes will be included. A system analysis on a societal level will be performed, with the target to incorporate HCT-city in the existing HCT roadmap. The results will be a foundation for a strategy including dispensations and regulatory changes on national roads and a recommendation how HCT-city can be designed to reach the highest possible productivity and transport efficiency.

    Fulltekst (pdf)
    fulltext
  • 3.
    Rylander, David
    et al.
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    Andersson, Magnus
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    Andersson, Kristina
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    On the viability of autonomous follower truck convoys2023Inngår i: 15th ITS European Congress, Lisbon, Portugal, 22-24 May-2023, 2023, artikkel-id Paper ID 51Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Autonomous follower truck convoy (AFTC) is a concept that addresses the major shortage of truck drivers and increasing transport costs. The AFTC concept can be described as a vehicle convoy concept consisting of two or more vehicles where the first, lead vehicle has a human driver and where the following vehicles in the convoy are driverless. The argument is made that this technology is less technically complex than single autonomous vehicles and targets higher economic values compared to driver-assisted platooning functions. The contribution of this paper is a viability study of the AFTC concept. The conclusions from the study are that the concept viability depends on the continuous evolvement of three main factors. The emergence of autonomous capabilities, legal frameworks, and logistics actors’ interest in adapting current processes and infrastructure to meet the operational limitations of the concept.

    Fulltekst (pdf)
    fulltext
  • 4.
    Rylander, David
    et al.
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    Axelsson, Jakob
    Mälardalen University, Sweden.
    Design and Evaluation of a System of Systems Architecture for the Optimization of a Cyclic Transport Operation2021Inngår i: 2021 16th International Conference of System of Systems Engineering (SoSE), 2021, s. 114-119Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Cyclic transport missions involving fleets of vehicles are common in quarry and mining operations and have shown to have a significant potential for energy optimization. Vehicles such as articulated haulers and dump trucks utilized in transport missions can be of different brand, type and have different performance characteristics such as engine power, traction and load. Vehicles may also be operated and owned by different organizations as they can be subcontracted to an operation. The transport operation characteristics include stochastic behaviors and activity times that fluctuate over time, and hence real-time control is required for efficient optimization. As the vehicles are mobile, wireless communication also needs to be available. As the constituent systems (vehicles) have managerial and operational independence, a system of systems approach is applicable. This paper provides an overview of the key characteristics and requirements for such a system and discusses the pros and cons of acknowledged and directed system architectures. Further, a case study is presented where an acknowledged system of systems is implemented in a real world mine and evaluated through a qualitative assessment of an operator assistive optimization system. Key findings include the drawbacks and characteristics of the architecture approaches. Further challenges and potential for automation and production control of a larger process system are described.

  • 5.
    Rylander, David
    et al.
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    Axelsson, Jakob
    RISE., Swedish ICT, SICS, Software and Systems Engineering Laboratory.
    LEAN METHOD TO IDENTIFY IMPROVEMENTS FOR OPERATION CONTROL AT QUARRY SITES2013Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The operation of Quarry and Aggregate sites are similar to factory production, since it contains sequential production processes, tasks and activities to produce the output product. Compared to the plant though, the quarry processes are generally not synchronized and controlled towards the overall throughput of the site in real time. Some quarries control parts of the production but do generally not utilize real-time technologies for the whole site and all its activities. This fact indicates a general improvement potential in increased productivity at quarry sites, but also unsolved challenges for the same reason. The main contribution of this paper is the presentation of a Lean based method for how to describe the processes to identify control improvement potential within a site. The aim of the identified improvements is to increase overall site productivity by optimizing site, fleet and machine utilization towards the overall throughput, and minimizing operational expenses and inventories. Further the paper exemplifies the methodÂ’s usability with field studies at operational quarry plants successfully identifying and quantifying potential wastes and improvements. In addition the identified productivity improvements based on increased control and automation indicate challenges and needs in wireless communication and sensing technologies.

  • 6.
    Rylander, David
    et al.
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system.
    Axelsson, Jakob
    RISE., Swedish ICT, SICS, Software and Systems Engineering Laboratory.
    Using Wireless Communication to Improve Road Safety and Quality of Service at Road Construction Work Sites (Poster)2012Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper investigates how wireless communication and vehicular ad hoc network (VANET) based technologies can be applied in relation to road construction work sites to improve safety and increase efficiency and sustainability. It discusses how to design the flow of data for a number of functions and how to operate the functions at the work site even at low VANET penetration rates. The applications described identify the potential in increased productivity at a road construction site and how increased visibility of site activities impact on traffic and improved road safety. It also highlights important implementation considerations and the need of availability and utilization of open standards for this purpose.

  • 7.
    Rylander, David
    et al.
    RISE Research Institutes of Sweden, Digitala system, Mobilitet och system. Mälardalen University, Sweden.
    Axelsson, Jakob
    RISE., Swedish ICT, SICS, Software and Systems Engineering Laboratory. Mälardalen University, Sweden.
    Wallin, Peter
    Volvo, Sweden.
    Energy Savings by Wireless Control of Speed, Scheduling and Travel Times for Hauling Operation2014Konferansepaper (Fagfellevurdert)
    Abstract [en]

    A Quarry and Aggregate production site consist of sequential production processes and activities to process and produce the output products. Compared to a fixed manufacturing plant, the quarry processes involve mobile machines such as wheel loaders, trucks and articulated haulers and a highly dynamic road infrastructure. Today, the mobile machines are generally not synchronized or controlled towards the overall throughput of the site in real time. This indicates a general improvement potential in increased productivity at quarry sites, but also unsolved challenges for the same reason. Assuming a wireless control system that controls speed and throughput of the different processes and activities, there would be a fuel reduction potential in controlling the mobile machines. This optimization requires models of machine fuel consumption for different applications, velocities and travel times. The main contribution of this paper is the presentation of fuel measurements based on different speeds, site application characteristics and travel times for hauling operation. The fuel measures reveal important aspects regarding how different velocities impact fuel consumption. The results of fuel measurements show a potential in fuel savings of up to 42% and a typical improvement of 20-30% depending on machine speeds, travel times, application and site characteristics. Based on this, some of the applications and challenges in wirelessly controlling machines are discussed.

    Fulltekst (pdf)
    fulltext
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