Heavy aircraft main landing gear tyres skid immediately after touchdown as result of the high slip ratio between the tyres and runway, which lead to tyre wear and smoke. In this paper, the tyre wear is modelled on the Archard theory using ANSYS mechanical transient, to reveal the wheel’s dynamic and the tyre tread wear. The wheel’s dynamic and the amount of wear are calculated for initially sta...

Preliminary note The aim of the investigation was to compare and unveil efficiency of electro-hydraulic control (EHR) system to mechanical three point hitch regulation in mouldboard ploughing. Increase of working velocity and three point hitch automatic regulation activity decreased depth of ploughing at both regulation systems but electro-hydraulic system done it more accurately since deviatio...

Vehicle models whose propulsion system is based on electric motors are increasing in number within the automobile industry. They will soon become a reliable alternative to vehicles with conventional propulsion systems. The main advantages of this type of vehicles are the non-emission of polluting gases and noise and the effectiveness of electric motors compared to combustion engines. Some of th...

Estimation and control of wheel slip is a critical consideration in preventing loss traction, minimizing power consumptions, reducing soil disturbance. An approach to estimation control, which robust sensor noises modeling imperfection, has been investigated this study. The proposed method uses simplified form wheels longitudinal dynamic the measurement vehicle speeds estimate optimum slip. for...

Based on the analysis of operating conditions tractor, a Hybrid four-wheel drive tractor is proposed, and formulate torque distribution control strategy based fuzzy control, to driving wheel slip rate in high traction efficiency range tractor. The vehicle model established AVL-CRUISE software, MATLAB/Simulink software. co-simulation was carried out plowing condition simulation results show that...

Planetary rovers will continue to evolve in the direction of enhanced mobility and more challenging terrain. Once the mechatronics are in place, it becomes the job of software to exploit the mobility of the platform to the maximum degree possible while minimizing exposure to risks. Local motion planners for outdoor offroad terrain typically use relatively high fidelity models of vehicle motion ...

This paper describes a general approach to the kinematics modeling of all-terrain rovers traversing uneven terrain. The model is derived for full six degree of freedom motion enabling movements in x, y, z directions, as well as pitch, roll, and yaw rotations. Differential kinematics is derived for the individual wheel motions in contact with the terrain. The resulting equations of the individua...

In this paper, the effects of wheel slip compensation in trajectory planning for mobile tractor-trailer robot applications are investigated. Firstly, a kinematic model proposed architecture is marked out, then an experimental campaign done to identify if it possible kinematically compensate trajectories that otherwise would be subject large lateral slip. Due close connection data, results shown...

Abstract Tread wear and rolling contact fatigue (RCF) damage propagated on railway wheels are the two extremely important focal points as they can tremendously deteriorate wheel/rail interactions hunting stability destroy wheel surface materials, subsequently, cut down lifetime of wheels. The on-board anti-slip controllers essence aiming to hold back striking slipping powered wheelsets under lo...

A hierarchical optimization procedure for the optimal synthesis of a double-axle steering mechanism used in truck with dynamic loads is presented. A multibody model of double-axle steering mechanism is presented to characterize the leaf spring effect. The influences of dynamic loads, the motion interference of steering linkage resulted from the elastic deformation of leaf spring, and the effect...