This is an outline of my lecture at the Hayama Symposium on several complex variables on December 21, 2002. The subject of the talk are new applications of the canonical Cartan connection for CR manifolds. Most of the results I will report on are based on joint research (partly in progress) with A.R. Gover and with J. Slovák and V. Souček. Partly, these results are specific for the class of CR ...

In a typical automatic guidance system for agricultural machines, the guidance system controls only one degree of freedom; either the steering angle of the front wheels of the tractor or other steering equipment is used for steering. In a tractor with the multiple degrees of freedom, like four wheel steering, the guidance system may use both the degrees of freedom for path tracking. However, th...

it is very important to test and evaluate the performance and ability of new-design machinery in comparison with available ones. based on this, a tractor front-mounted rice reaper was compared and evaluated with tiller- mounted and self-propelled reapers. field experiments were conducted to determine forward speed, field capacity, harvesting losses, labor and costs. experiments were conducted b...

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...

Many parameters such as dynamic load of tractor drive wheels influence the traction of tractors. An increase in dynamic load of drive wheel increases the net traction, but excess dynamic load decreases the tractive efficiency that must be avoided. Development of tractor-mounted implements due to good maneuvering and weight transfer from front axle to rear axle led to effective performance of tr...

Tractors are the workhorses of the modern farm. By automating these machines, we can increase the productivity, improve safety, and reduce costs for many agricultural operations. Many researchers have tested computer-controlled machines for farming, but few have investigated the larger issues such as how humans can supervise machines and work amongst them. In this paper, we present a system for...

It is challenging to develop a control algorithm that uses only one sensor to guide an autonomous vehicle. The objective of this research was to develop a control algorithm with a single sensor for an autonomous agricultural vehicle that could identify landmarks in the row-type plantation environment and navigate a vehicle to a point-to-go target location through the plantation. To enable such ...

In accordance with the agricultural row-crops cultivation practices adopted in Central Asian region, machine-tractor units carry out a large number of passes through field during growing season. Consequently, individual sections fields are repeatedly affected by running systems these machines, which negatively affects soil fertility. The universal row-crop tractors used cotton production have t...