Real-Time Pressure and Flow Response for Swath Control Technology Sharda, Ajay Fulton, John Darr, Matthew McDonald, Timothy Darr, Matthew Zech, Wesley Brodbeck, Christian
dc.contributor.department Agricultural and Biosystems Engineering 2018-02-13T07:38:48.000 2020-06-29T22:33:11Z 2020-06-29T22:33:11Z Thu Jan 01 00:00:00 UTC 2009 2013-03-23 2009-06-01
dc.description.abstract <p>Auto-swath technology is being readily adopted by producers across the US because it can improve in-field equipment efficiency and reduce input usage leading to economic savings. Spray controllers with swath control use GPS to track of areas where inputs have already been applied and areas identified to receive no inputs. However, concerns exist for liquid applicators equipped with auto-swath technology about the system response when shutting ON/OFF of boom-sections or nozzles possibly impacting the desired spray pattern and rate. Therefore, an investigation was conducted to evaluate real-time boom dynamics, pressure and flow, for a typical agricultural sprayer using auto-swath technology. An 18.3-m sprayer was outfitted with commercially available individual nozzle and boom-section control was used to determine if difference existed between these different methods of ON/OFF control. Ten high frequency response pressure sensors were randomly mounted across the boom to measure nozzle tip pressure with another sensor located at the boom manifold to record overall system pressure. A flow meter just before the boom manifold provided system flow response. Two point row scenarios having 20° and 70° angles were conducted at 43.2 l/min application rate and 9.7 km/h ground speed. Auto-boom scenarios were conducted with and with-out flow compensation while auto-nozzle scenarios were conducted without flow compensation. Results indicated that 1) pressure deviation between -28% and 29% during 20° and 70° point row auto-boom scenarios resulted in the spray tip flow rate varying from -19.2% to 12.4 % during auto-boom scenarios; 2) nozzle pressure stabilization time (PST) was up to 19.3 sec. while moving OUT and INTO point rows,; 3) 20° point row presented an example of a scenario where the controller was unable to control the application rate during auto-swath initiation; and 4) the sprayer system dynamics were different for moving INTO versus OUT of point rows for all tests. These results suggest different control algorithms and possible hardware improvements are needed for these operating conditions to minimize application errors.</p>
dc.description.comments <p>This is an ASABE Meeting Presentation, Paper No. <a href="" target="_blank">097320</a>.</p>
dc.identifier archive/
dc.identifier.articleid 1295
dc.identifier.contextkey 3948355
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/293
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 23:14:38 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Liquid application
dc.subject.keywords precision agriculture
dc.subject.keywords distribution
dc.subject.keywords uniformity
dc.subject.keywords pressure
dc.subject.keywords variable-rate technology
dc.title Real-Time Pressure and Flow Response for Swath Control Technology
dc.type article
dc.type.genre conference
dspace.entity.type Publication
relation.isAuthorOfPublication 25d24836-9259-4619-a6e1-971f2049e041
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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