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This paper presents mechanism and control of a four-wheel-drive (4WD) robotic platform for wheelchairs. The 4WD mechanism equips four wheels, two omni-wheels in front and two normal tires in rear. The normal wheel and the omni-wheel, mounted on the same side of the base, are interconnected by a synchro-drive transmission to rotate in unison with a drive motor. To control chair orientation on the 4WD...
In this paper, we report on an evaluation of the Marine Broadband Framework that was implemented in 2008, as well as a real-time aquatic resources evaluation system that uses the Marine Broadband Framework. The Marine Broadband Framework is a wireless LAN environment with xDSL equivalent transmission speeds that can be used over a range of approximately 20 km from the coastline, which is the main...
This paper presents analysis and experiments of a 4WD omnidirectional wheelchair for climbing a high step. For enhancing the mobility and maneuverability of standard wheelchairs, a new type of omnidirectional mobile platform with four-wheel drive (4WD) mechanism is introduced. The mobile platform equips four wheels, two omni-wheels in front and two normal tires in rear. The normal wheel and the omni-wheel,...
This paper presents a development of a 4WD omnidirectional wheelchair with a chair tilting system for climbing single high step. For enhancing the step climb capability of standard wheelchairs, a Four-wheel-drive(4WD) mechanism is introduced. The mobile platform equips four wheels. A pair of front-rear wheels which mounted on the same side of the mechanism, are interconnected by belt transmissions...
The existence of wireless and mobile technology has provided opportunities to support learning regardless of the physical learning space. Thus for example, usage of mobile terminals such as smart PDA (personal digital assistant) in a learning system is very common phenomenon. Mobile devices can communicate with wireless mobile terminal and realize the intelligence exchange with its surroundings. Based...
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