نتایج جستجو برای: wheel flat

تعداد نتایج: 73059  

2000
D. M. Dawson

In this paper, we develop a new method for Wheeled Mobile Robot (WMR) fault detection. Specifically, we develop kinematic and dynamic models of the WMR in the presence of faults such as a change in the wheel radius (e.g., deformation, broken spoke, flat tire) or general kinematic disturbances that model slipping or skidding faults. Utilizing the WMR models, we employ a torque filtering techniqu...

Journal: :Journal of Circuits, Systems, and Computers 2007
Nadeem Qaiser Naeem Iqbal Amir Hussain Naeem Qaiser

This paper considers the stabilization problem of Inertia Wheel Pendulum, a widely studied benchmark nonlinear system. It is a classical example of a flat underactuated mechanical system, for which the design of control law becomes a challenging task owing to its underactuated nature. A novel nonlinear controller design, fusing the recently introduced Dynamic Surface Control and the Control Lya...

Journal: :Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport 2019

2002
Matthew Spenko Haoyong Yu Steven Dubowsky

An omnidirectional platform with an Active Offset Split Caster (ASOC) is described and its ability to operate on non-ideal floors is studied. It is shown that all of its driven wheels of the platform will remain in contact with an uneven floor at all times, a condition necessary to maintain good traction and dead-reckoning capabilities. It is shown that planning algorithms developed for an idea...

2014
Yu-Jen Wang Sheng-Chih Shen Chung-De Chen

Harvesting kinetic energy from the environment is an ideal alternative to traditional electrochemical batteries as a power source for low-power electronics such as pressure sensors and thermometers. A tire pressure monitoring system (TPMS) is a key device in preventing a flat tire, which is one of the most frequent causes of car accidents. The U.S.A., European Union, and a number of Asian count...

2011
C. Creager S. Moreland K. Skonieczny K. Johnson V. Asnani R. Gilligan

As NASA’s exploration missions on planetary terrains become more aggressive, a focus on alternative modes of locomotion for rovers is necessary. In addition to climbing steep slopes, the terrain in these extreme environments is often unknown and can be extremely hard to traverse, increasing the likelihood of a vehicle or robot becoming damaged or immobilized. The conventional driving mode in wh...

Journal: :International Journal of Mechanical Sciences 2021

Abstract A singular rail or wheel surface irregularity, such as a squat, insulation joint flat, can cause large wheel-rail impact force. Both the magnitude and frequency content of force need to be correctly modelled because they are closely related formation, deterioration detection irregularities. In this paper, we compare two types commonly used wheel-track interaction models for problems, i...

Journal: :Technology audit and production reserves 2021

The object of research is the process circular and surface grinding titanium alloy corrosion-resistant steel, namely, cutting forces arising from mechanical processing. One most problematic areas in work selection required modes, material wheel grain size. In course experiment, we used samples VT8 12Х18N9T on which was studied with wheels made various materials (electrocorundum, cubic boron nit...

ژورنال: Journal of Railway Research 2014
Farrahi, G.H., Masoudi Nejad, R., Salehi, S.M,

This paper presents the prediction of fatigue life and crack propagation in the railway wheel due to the stress field caused by mechanical loads and press fitting process of a railway wheel. A 3-D nonlinear stress analysis model has been applied to estimate stress fields of the railway wheel in press fitting process. Finite element analysis model is presented applying the elastic–plastic fin...

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