A new hybrid wheelchair/bed system for assisting the bedridden has been developed and tested. The powered wheelchair docks with a stationary bed and reconfigures to a chair to provide full mobility assistance by eliminating the need to transfer the bedridden person from bed to chair. Furthermore, the chair can dock directly and automatically with a toilet to eliminate the need to change seating...

In a sampled data system, frequency components greater than half the sampling rate "alias" (shift) into the frequency band of interest. Most of the time, aliasing in an undesirable side effect, so the "undersampled" higher frequencies are simply filtered out before the A/D stage. But sometimes, the undersampling is deliberate and the aliasing causes the A/D system to function as a mixer. This a...

An automated system is developed to control the rotation of the wheel chair based on touch screen and head movement by the physically challenged person. Independent movement can be done by them with the help of an accelerometer device which is fitted on person’s head and a touch screen is placed with the wheelchair which can be operated by the person [1]. Based on the touch and head movements, ...

A robust wheel slip controller for electric vehicles is introduced. The proposed wheel slip controller exploits the dynamics of electric traction drives and conventional hydraulic brakes for achieving maximum energy efficiency and driving safety. Due to the control of single wheel traction motors in combination with a hydraulic braking system, it can be shown, that energy recuperation and vehic...

Since car manufacturers pursue in the development of environmental -friendly vehicle, the demand for extensive research on stability, controllability, and reliability of electric vehicles (EVs) increases. Electric powered and by-wire control technology allow manufacturers to build independent four -wheel steering of an allwheel drive in-wheel EV. In past research, we investigated the advantages...

A new type of holonomic omnidirectionul vehicle which consists of wheel mechanisms without free rollers but with conventional tires is presented. We first present a concept of the new driving wheel mechanism with a tire in the conventional style such QS a rubber tire or a pneumatic tire,"Offset Steered Driving Wheel". The configuration of the wheel has an offset distance between a wheel axle an...

Microvibration management onboard spacecraft with high stability requirements has drawn increasing interest from engineers and scientists, and this paper discusses a reaction wheel design that allows a significant reduction of midto high-frequency microvibrations and that has been practically implemented in industry. Disturbances typically induced by mechanical systems onboard a spacecraft (esp...

performances of electronic and mechanical draft control systems on a mf399 tractor were the objectives of the study to be evaluated and compared under field conditions. hence, the effects of two draft control systems (mechanical and electronic) under four ground speed levels and three set values of draft levels on rear wheel slippage, fuel consumption, compressive force within the top link and ...

In this paper the evaluation of effectivenes of instrumented glove in measurement of hand opening and preshaping during reach-to-grasp movement is described. In the experiment presented in this work the reach-to-grasp movement of one healthy subject was measured by two different types of motion-tracking devices (3D optical system, Optotrak, and commercial instrumented glove, 14 sensors Ultra Da...