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We propose a design method for oversampled FIR DFT filter banks which have the paraunitary property, where the number of channel M is the multiple of decimation ratio D and the filter length is the multiple of M. Our proposed method is based on Householder factorization, which can keep the perfect reconstruction condition and the paraunitary property of filter banks in optimization process. In addition,...
Force display is an important element to set up a user-friendly man-machine interaction system (e. g. haptic interface system). To display force easily and conveniently by means of a simple mechanism, we focus attention on the static characteristics of an omnidirectional mobile robot. This paper presents development of a prototype of a planar 3-DOF wheeled motion base consisting of omnidirectional...
Despite convenient functions supporting videoconferencing, it is often difficult to maintain awareness and attention during remote lectures. One possible approach for addressing such difficulties is to present using a flip board held by a presenter, instead of presentation slides usually displayed on a different screen away from the presenter's face. This flip-board-based presentation style makes...
This research develops a machine's interface which has features of universal design and offers an intuitive operation for complex tasks. We set a development of interface of electric wheelchair as a practical example, and proceed with this research. The joystick is the operation interface of general electric wheelchair. The user needs to operate it in accordance with machine's operational procedure...
The joystick is the operation interface of electric wheelchair. The user needs to operate it in accordance with machine's operational procedure specifications. Therefore the joystick is convenience operation system for the system side rather than the user side We focus on the body motions which humans have, and try to realize a new type of interface which replaces conventional joystick. There is a...
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