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A method of identifying the friction of real devices for haptic display is presented. The method is suitable for identifying both the friction and inertia of a system simultaneously. This paper begins with a brief survey of common friction models and identification procedures. After the identification method is outlined, results are presented for experiments conducted to identify the friction and mass of an aluminum block sliding on sheets of brass, teflon, and rubber.
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Richard et al. (1999) studied this question.