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This paper presents a joystick car drive system for a handicapped person. The joystick drive system enables handicapped person to drive a car by his/her single hand with seating in an electric wheelchair. The joystick operation in back and force direction controls acceleration or deceleration of a car while that in left and right direction turns a steering wheel. Therefore a person, who has disabilities...
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...
This paper presents a joystick car drive system for a handicapped person using a wheelchair. The joystick drive system enables handicapped person to drive a car with his/her single hand. The joystick operation in back and force direction controls acceleration or deceleration of a car while that in left and right direction turns a steering wheel. Therefore a person, who has disabilities in legs together...
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,...
In this paper, a development of a four-wheel-drive (4WD) omnidirectional wheelchair is presented. For enhancing the mobility of conventional wheelchairs, a new type of omnidirectional mobile mechanism with 4WD system is introduced. The mobile mechanism equips four wheels, two omni-wheels in front side and two normal tires in rear side. The normal wheel and the omni-wheel, mounted on the same side...
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...
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