نتایج جستجو برای: a tractor front

تعداد نتایج: 13444964  

2011
Noboru Noguchi

The objective of the research is to develop a robot farming system using multiple robots. The research will discuss the application of multiple robots in Japan agriculture for rice, wheat and soybean. The robot farming system includes a rice planting robot, a seeding robot, a robot tractor, a combine robot harvester and various implements attached on the robot tractor. One of the key elements o...

Abdolghaium Ghiami Farshid Ghaderifar Hamid Reza Asgari Zahra Saeedifar,

Soil compaction has become a widespread problem in the world and is one of the factors involved in land degradation and declining crop yields, especially in the arid and semi-arid agriculture. The purpose of this study was to investigate the effects of subsoil compaction on morphological, physiological and agronomic aspects of wheat .The research was carried out in the experimental farms of Anb...

2008

Synopsis: The Tractor Supply Company case introduces students to a unique retailing story. By recognizing a target market with unique needs, TSC repositioned its traditional tractorparts business into a specialty retailer serving a variety of needs for consumers entertaining their interests in part-time farming and ranching. This growing consumer segment has been TSC’s focus for the past 15 yea...

2009
Matthias Hammerl

Given a parabolic geometry and a tractor bundle, the BGG-machinery as developed by Čap-Slovak-Souček and simplified by Calderbank-Diemer gives rise to a sequence of natural differential operators, the first of which is overdetermined and yields interesting geometric equations. This thesis presents a natural method to construct a modified connection on the tractor bundle such that its parallel s...

2015
Haijun Shen Carlos M. Roithmayr

Material collected from an asteroid’s surface can be used to increase gravitational attraction between the asteroid and a Gravity Tractor (GT); the spacecraft therefore operates more effectively and is referred to as an Enhanced Gravity Tractor (EGT). The use of tethers and solar sails to further improve effectiveness and simplify operations is investigated. By employing a tether, the asteroida...

1998
T. S. Stombaugh E. R. Benson N. Noguchi J. F. Reid

This paper describes an agricultural vehicle modified to serve as a research platform for agricultural engineering. A tractor was equipped with a global positioning receiver, inertial/GPS system, geomagnetic direction sensor, and a monochrome camera for local and global sensing. For steering control, the tractor was equipped with an electro-hydraulic proportional steering valve, PWM coil valve ...

2014
Ryszard MICHALSKI Ryszard ARENDT

In a classical approach to damage diagnosis, the technical condition of an analyzed machine is identified based on the measured symptoms, such as performance, thermal state or vibration parameters. In wheeled tractor the fundamental importance has monitoring and diagnostics during exploitation concerning technical inspection and fault element localizations. The main functions of a diagnostic sy...

Journal: :تحقیقات مهندسی کشاورزی 0
مجتبی نادری بلداجی دانشجوی دکتری پردیس کشاورزی و منابع طبیعی دانشگاه تهران رضا علیمردانی استاد دانشکده مهندسی بیوسیستم پردیس کشاورزی و منابع طبیعی دانشگاه تهران احمد طباطبایی فر استاد دانشکده مهندسی بیوسیستم پردیس کشاورزی و منابع طبیعی دانشگاه تهران احمد شریفی استادیار پژوهش مؤسسه تحقیقات فنی و مهندسی کشاورزی

soil compaction is an important aspect of agriculture and different methods are available to measure this parameter. one method is called the cone index; measuring the force required per unit area for penetration of a standard steel cone into the ground. cone penetrometers are used for cone index measurement. in this study, a tractor mounted, hydraulically-operated penetrometer was designed, bu...

2017
Robert D. Grisso Virginia Tech Michael F. Kocher David H. Vaughan R. D. Grisso M. F. Kocher D. H. Vaughan

Reports from the Nebraska Tractor Test Laboratory (NTTL) show improved fuel efficiency during the past 20 years. A 4.8% decrease in average annual specific volumetric fuel consumption for the data used in theASAE Standards was shown. Using fuel consumption and power data from the NTTL reports, new equations for fuel consumption were established that predict fuel consumption for diesel engines d...

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