Main Sector of relevance\IRC classification 5. Electronics, IT and Telecommunication
5.17 Mechatronic system of noncontact surface contour following by remote metering of mobile machine end-effector position and reduction of its slipping
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
It is necessary to carry out agricolous operations accurately
(precisely) to enhance the performance index of agricultural industry.
Therefore the control elements of hydraulic drives must provide quite fast
response on input signals. High-speed mechatronic units meet these
requirements. They were manufactured using modern electrohydraulic and
electronics techniques that make it possible to carry out highly reliable
control over hydraulic drive actuators upon absence of hydrodynamic drag force
and dry friction as well as temperature variations and pollution density of the
operating fluid.
The draft control system oriented for carrying out of inferential control over
tilling depth of pickup plow actuating elements pickup plow does not provide
qualitative accomplishment of tillage operations for multiple-furrow semi
mounted plows. It makes sense to use depth contour control in order to solve
the problem as it makes it possible to measure the depth of tillage directly at
front housing zones. Moreover actuating elements shall be kept above the
surface at the specified level without a mechanical contact in order to enhance
reliability. For implementation of this function it is necessary to
automatically determine the distance to surface and carry out fast response
control over the hookup. 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 and engineering and ergonomic
characteristics of machine-tractor unit upon meeting agrotechnical
requirements.
Description
The qualitative maintenance of tilling selected depth upon the
use of long semi-integral plows is an unsolved problem. Therefore it is offered
to provide tilling even depth across the width of coverage by means of
automatic control over front housing plow position by the remedial action of
tractor hookup. In this case signals coming from ultrasonic sensor of depth
tilling direct determination.
The increase in the overall performance of energy machine upon exact contour
following of the surface by actuating elements can be achieved by its slipping
decrease that can be expressed as the difference between theoretical and actual
velocity of its moving over the surface. For determination of the theoretical
velocity, it is offered to use discrete inductive sensor of element
transmission revs revolutions; but actual velocity is effectually measured by
radar or global positioning system.
The mechatronic system of noncontact surface contour following includes remote
metering sensor of end-effector positions, units for measuring of theoretical
and actual velocity of the machine, electro hydraulic distributor of hookup
hydraulic power cylinder, microprocessor controller, operating console with the
indication of soil operating depth soil as well as a connector cable.
Technology type
Technical advantages and economic benefits
This system makes it possible to enhance the level of quality of
tilling operations for plowing units using semi-integral plows with
simultaneous fuel cost cutting. This will lead to soil fertility preservation
and increase in agricultural productivity due to exact maintenance of selected
tilling depth.
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 using computer representation of dynamic
and experimental-statistical models. Moreover metrical and driving stages are
worked out using newest automation and electrohydraulicequipment.
The specified approach will make it possible to create a mechatronic system of
noncontact surface contour following surface for mobile machine what will let
come to a new technical level per constructive and operational characteristics.
Technology differentiation and uniqueness
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Context in which technology was identified
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Technological keywords
Electro hydraulic distributor, microprocessor controller, ultrasonic range sensor, depth control.
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