The discrepancy between the plow width and tractor leads to asymmetry of plowing units. geometry plowshare surface moldboard contributes generation lateral forces on working tool. All this imbalance tool deviation from straight-line movement during plowing. To maintain movement, driver has adjust machine every 5-10 meters, which is highly tiresome. study causes slips unit, we constructed a math...

The knowledge of the available power provided by the driving wheel of agricultural tractors is required to gain a correct insight into the energy management of agricultural tractors. The design of the tractors is pivotal on the maximization of the traction efficiency and simultaneous minimization of energy dissipation. This paper spearheads the synthesis of the power provided by the agricultura...

BACKGROUND With ageing populations worldwide, mobility devices are used more than ever. In the current literature there is no consensus whether the available mobility devices safely improve the mobility of their users. Also, evidence is lacking concerning the risks and types of injuries sustained while using a four-wheeled walker. OBJECTIVE To assess injury risks and injury patterns in older ...

The driving speed of modern tractors increased within last years up to 60 km/h. Together with the driving speed, the safety and comfort requirements are increasing as well. Since modern agricultural tractors still don’t have a rear axle suspension, their driving dynamics behaviour can become critical at certain situations. To be able to predict such critical situations, a multibody model of a t...

PURPOSE To study immediate gait changes in persons with PD when walking with different assistive walking devices. METHODS Ten individuals with idiopathic PD participated in the study. Gait parameters were recorded while walking with a cane and a wheeled walker, and were compared to a free walk without a walking device. RESULTS Persons with PD walked with slower gait speed when using a cane ...

This paper proposes a novel trajectory tracking control approach for nonholonomic wheeled mobile robots. In this approach, the integration of feed-forward and feedback controls is presented to design the kinematic controller of wheeled mobile robots, where the control law is constructed on the basis of Lyapunov stability theory, for generating the precisely desired velocity as the input of the ...

In this work, we study cooperation in a heterogeneous swarm robotic system composed of wheeled and aerial robots. The wheeled robots are able to physically connect to one another autonomously and thus form collective robotic entities. The aerial robots have a privileged overview of the environment since they can fly and attach to metal ceilings. We present a system that enables spatially target...

Articulated Wheeled Vehicles (AWVs) are a class of wheeled locomotion systems where the chassis is connected to a set of ground-contact wheels via activelyor passively-controlled articulations, which can regulate wheel placement with respect to chassis during locomotion. The ensuing leg-wheeled systems exploit the reconfigurability and redundancy to realize significant benefits (improved stabil...