Main Sector of relevance\IRC classification 5. Electronics, IT and Telecommunication
5.18 Сontrol system for electrohydraulic distributors external consumers with programmability of performed operations
Developers’ contact information
1) State Scientific Institution “Joint Institute of Mechanical
Engineering of the National Academy of Sciences of Belarus”
12, Akademicheskaya Str., Minsk 220072
Tel/fax: +375 (17) 210-07-49; Web-site:
http://oim.by
Summary
There is a rapid development of a new trend that is known as the precision farming system. It is one of the most advanced concepts of agricultural industry that presupposes carrying out of operations in high-precision mode with minimum cumulative expenditures. Use of hydraulic drives on powered tractors to carry out control over front and rear hookups as well as several external consumers presupposes automation of technological cycling by several executive mechanisms using electro-driven sectional distributors. During tilling operations, after each cycle, an operator shall carry out constantly repeated sequence of operations related to operational modes adjustment besides performing obligatory technological functions. Therefore it is necessary to create new advanced control systems in order to provide competitiveness of the tractors. These systems shall make it possible to raise technical, engineering and ergonomic characteristics of machine-tractor unit upon meeting agrotechnical requirements.
Description
The control system includes programmable microprocessor controller, remote control devices (joysticks) and indicating devices as well as a connector cable. The system provides a continuous control over 4 distribution panels of external consumers according to a defined algorithm with the possibility to indicate executed control functions via indicators. A diagnostic function and the possibility to change automatic control for manual control are provided herewith.
Technology type
Technical advantages and economic benefits
The use of this system makes it possible to enhance the accuracy
of tilling operations and improve ergonomic parameters due to the possibility
to program a sequence of the performed operations using signal pickup from
remote control devices over agricultural implements with the following
automatic reproduction of recorded signals. Moreover, in comparison to foreign
analogues (Bosh-Rexroth), a supplementary button of flow value fixation on the
joystick has been implemented. Moreover there are two microchips in the
joystick construction that measure turning angles, instead of four microchips
for measuring of linear movement value what reduces the probability of system
failure.
The scientific meaning of this development consists in original algorithmic
software that makes it possible to get high dynamic qualities of activation of
hydraulic drive executive mechanisms as well as in explanation and
determination of mechanical specifications of mechatronic system components of
noncontact surface contour following with the help of computer representation
of dynamic and experimental-statistical models. Moreover, metrical and driving
stages are worked out using newest automation and electrohydraulic equipment.
Dynamic and energy problems as well as problems of control system reliability
with open back coupling are solved all at once by synthesis of optimal
structures of hydraulic, electronic and electromechanic elements. The specified
approach will make it possible to create cost-effective control system over
electrohydraulic distributors of external consumers that is highly competitive
with foreign analogues by constructive and operational characteristics and has
lower cost.
Technology differentiation and uniqueness
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Context in which technology was identified
International Scientific and Technical Conference “Innovations in machine industry”, October 30-31, 2008, Minsk.
Technological keywords
Electro-driven distributor, programmable controller, joystick, control function.
Development Stage
Intellectual property rights
Range of applications
Tractor industry.
Classifier Used at the EU Innovation Relay Centres
Preferable Regions
Practical experience
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Environmental impact
None.
Type of collaboration sought
Terms and restrictions
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Available technical assistance