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  • 1.
    Fällman, Daniel
    et al.
    Umeå University, Faculty of Social Sciences, Department of Informatics.
    Andersson, Niklas
    Umeå University, Faculty of Science and Technology, Umeå Institute of Design.
    Johansson, Lars
    Umeå University, Faculty of Science and Technology, Umeå Institute of Design.
    Come Together, Right Now, Over Me: Conceptual and Tangible Design of Pleasurable Dupliances for Children2001In: Proceedings of the International Conference on Affective Human Factors Design, CAHD 2001, London: Asean Academic Press , 2001Conference paper (Refereed)
  • 2.
    Fällman, Daniel
    et al.
    Umeå University, Faculty of Social Sciences, Department of Informatics.
    Andersson, Niklas
    Umeå University, Faculty of Science and Technology, Umeå Institute of Design.
    Johansson, Lars
    Umeå University, Faculty of Science and Technology, Umeå Institute of Design.
    Dupliances: Physical and Virtual Activity Encompassed2001In: Proceedings of CHI 2001: Human Factors in Computing Systems, Extended Abstracts, New york: ACM Press , 2001Conference paper (Refereed)
  • 3.
    Rönnbäck, Sven
    et al.
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Johansson, Lars
    Umeå University, Faculty of Science and Technology, Umeå Institute of Design.
    Field tests of a roll-over prevention system for quad-bikes2011In: IEEE International Conference on Mechatronics, IEEE , 2011Conference paper (Refereed)
  • 4.
    Rönnbäck, Sven
    et al.
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Johansson, Lars
    Umeå University, Faculty of Science and Technology, Umeå Institute of Design.
    Winter tests of a quad-bike rollover prevention system2011In: IEEE Proceeding of International Conference on Advanced Robotics, Tallin: IEEE , 2011Conference paper (Other academic)
    Abstract [en]

    We have developed a teleoperated quad-bike to be able to test a rollover prevention system. It was equipped with onboard computers, power steering, throttle control, emergency power cutoff, an IMU module, pneumatic actuators, and mechanical retractable outriggers. An onboard computer system tracks the vehicle orientation and velocity in real time. When the vehicle is predicted to overturn the system activates functions to prevent a rollover. The functions are: - activation of retractable outriggers, - decrease the throttle for motor brake, - activation of rear wheel brakes. The system has no active steering. The system was field tested in winter conditions in mars 2010, and was able to prevent rollover situations sideways and backwards.

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