Towards just noticeable diﬀerences for natural frequency of manually excited virtual dynamic systems
Li, Yanfang and Patoğlu, Volkan and Huang, Deborah and O'Malley, Marcia K. (2007) Towards just noticeable diﬀerences for natural frequency of manually excited virtual dynamic systems. In: The Second Joint EuroHaptics Conference and IEEE Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, Tsukuba, Japan
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Official URL: http://dx.doi.org/10.1109/WHC.2007.118
This paper explores the experiment design to determine a human's ability to discriminate the natural frequency of manually excited virtual dynamic systems. We use a one degree-of-freedom haptic interface with a coupled graphical display to render a virtual mass-spring system, which is excited by the human operator using his/her dominant hand. The results from the preliminary experiment indicate a JND value of approximately 8%. However, results also indicate that excitation strategies have a significant effect on the discrimination threshold determination of this dynamic property. In this paper, along with a discussion of the preliminary results, a refined experiment design that accounts for different factors influencing the discrimination of manually excited natural frequency is presented.
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