Results 31 to 40 of about 3,604 (206)

Optimal Path-Planning of Nonholonomic Terrain Robots for Dynamic Obstacle Avoidance Using Single-Time Velocity Estimator and Reinforcement Learning Approach

IEEE Access, 2019
A single-time velocity estimator-based reinforcement learning (RL) algorithm, integrated with a chaotic metaheuristic optimization technique is proposed in this article for the optimal path-planning of the nonholonomic robots considering a moving ...
Hamid Taghavifar, Bin Xu, Leyla Taghavifar, Yechen Qin   +3 more
doaj   +1 more source

Proposal of walking to reduce slipping behavior using compaction effect of loose soil caused by a propagation of vibration for small light lunar planetary exploration rovers with legs

Nihon Kikai Gakkai ronbunshu, 2020
Purpose of our research is to improve the movement performance of small leg typed rovers using effects caused by vibration propagation. When the loose ground is given vibration, there are two effects.
Tomohiro WATANABE, Kojiro IIZUKA
doaj   +1 more source

Relating geologic units and mobility system kinematics contributing to Curiosity wheel damage at Gale Crater, Mars [PDF]

, 2017
Curiosity landed on plains to the north of Mount Sharp in August 2012. By June 2016 the rover had traversed 12.9 km to the southwest, encountering extensive strata that were deposited in a fluvial-deltaic-lacustrine system.
Arvidson, R. E., DeGrosse, P., Jr., Fraeman, A. A., Grotzinger, J. P., Heverly, M. C., Moreland, S. J., Newby, M. A., Shechet, J., Steffy, A. C., Stein, N., Stilly, E. K., Vasavada, A. R., Zastrow, A. M., Zhou, F.   +13 more
core   +1 more source

Design parameters for continuously variable power-split transmissions using planetaries with 3 active shafts [PDF]

, 2010
Since 1996, when the first agricultural tractor with CVT transmission was shown, the presence of this type of transmissions has been increasing. All companies offer them in their products range.
Catalán Mogorrón, Heliodoro Fco., Linares Anegón, Pilar, Mendez Fuentes, Valeriano   +2 more
core   +2 more sources

Modeling of the interaction of rigid wheels with dry granular media

, 2019
We analyze the capabilities of various recently developed techniques, namely Resistive Force Theory (RFT) and continuum plasticity implemented with the Material Point Method (MPM), in capturing dynamics of wheel--dry granular media interactions.
Agarwal, Shashank, Goldman, Daniel I., Iagnemma, Karl, Kamrin, Ken, Kingsbury, Mark, Senatore, Carmine, Zhang, Tingnan   +6 more
core   +1 more source

Characterizing Soil Stiffness Using Thermal Remote Sensing and Machine Learning

Remote Sensing, 2021
Soil strength characterization is essential for any problem that deals with geomechanics, including terramechanics/terrain mobility. Presently, the primary method of collecting soil strength parameters through in situ measurements but sending a team of ...
Jordan Ewing, Thomas Oommen, Paramsothy Jayakumar, Russell Alger   +3 more
doaj   +1 more source

Modeling of the external disturbances of the ground surface during military tracking vehicles movement [PDF]

, 2016
У статті розлянуто питання імітаційного моделювання впливу випадкових зовнішніх збурень на рух військової гусеничної машини, зокрема випадкову зміну параметрів покриття, по якому здійснюється рух.
Бистрицький, Максим Євгенович, Васильєв, Антон Юрійович, Рудий, Андрій Володимирович   +2 more
core   +1 more source

The Prediction Method and Application of Off-Road Mobility for Ground Vehicles: A Review

World Electric Vehicle Journal
With the rapid advancement of technologies related to unmanned ground systems, ground vehicles are being widely deployed across various domains. However, when operating in complex, soft terrain environments, the low bearing capacity of such terrains ...
Chen Hua, Wencheng Zhang, Hanghao Fu, Yuhao Zhang, Biao Yu, Chunmao Jiang, Yuliang Wei, Ziyu Chen, Xinkai Kuang   +8 more
doaj   +1 more source

Prediction of Rut Depth in Soil Caused by Wheels Using Artificial Neural Networks [PDF]

Journal of Agricultural Machinery
Introduction The formation of ruts induced by vehicle traffic poses a significant challenge for agricultural soils due to soil compaction both at the surface and deeper layers. This phenomenon compromises vehicle performance increases energy consumption,
N. Farhadi, A. Mardani, A. Hosainpour, B. Golanbari   +3 more
doaj   +1 more source

Utilizing Hyperspectral Remote Sensing for Soil Gradation

Remote Sensing, 2020
Soil gradation is an important characteristic for soil mechanics. Traditionally soil gradation is performed by sieve analysis using a sample from the field.
Jordan Ewing, Thomas Oommen, Paramsothy Jayakumar, Russell Alger   +3 more
doaj   +1 more source