نتایج جستجو برای: specific drawbar energy

تعداد نتایج: 1660163  

Journal: :Journal of Central European Agriculture 2013

Journal: :Sensors 2021

Driving wheel operation is characterized by force interactions with the ground, manifested in form of vibrations. Signals generated driving wheels can be analyzed frequency spectrum tractor drawbar pull. The paper presents analysis a pull signal equipped two types special and standard tires. Beside evaluation wheels’ properties according to power, spectra measured signals were using fast Fourie...

2012
DAWEI JIN JIANXIN ZHU CHUNHUA ZHANG

In order to study passing ability of lunar rover in lunar soil, the mechanical parameters between lunar wheel and lunar soil should be analyzed. The mechanical parameters can reflect the mechanical relationship between lunar rover wheel and regolith. These parameters include sinkage, drawbar pull, driving torque, motion resistance and slip. In this paper, these parameters are measured by soil b...

2008
Rainer Krenn Gerd Hirzinger

This paper presents two examples of contact dynamics simulations for space robotics application: Satellite docking in GEO and rover locomotion on planetary surfaces. The contact modeling techniques include a) contact between polygonal surfaces according to the elastic foundation model theory and b) contact between digital elevation grid surfaces and point cloud surfaces with application of Bekk...

2010
Liang Ding Haibo Gao Zongquan Deng Keiji Nagatani Kazuya Yoshida

Planetary rovers are different from conventional terrestrial vehicles in many respects, making it necessary to investigate the terramechanics with a particular focus on them, which is a hot research topic at the budding stage. Predicting the wheel–soil interaction performance from the knowledge of terramechanics is of great importance to the mechanical design/evaluation/optimization, dynamics s...

Journal: :Journal of Central European Agriculture 2013

The aim of this article is to analyze SEC critically in relation to refinery industrial energy efficiency. In this study, the effect of various parameters such as input energy carriers, output energy, API value, and input refining oil was investigated. Specific energy consumption of unit and standard criterion was obtained 2.30 and 3.06 Gj/ton, respectively, that the total specific energy consu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...

Journal: :Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 2017

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