Effects of Multi-Mode Four-Wheel Steering on Sprayer Machine Performance

dc.contributor.author Miller, Mitchell
dc.contributor.author Steward, Brian
dc.contributor.author Steward, Brian
dc.contributor.author Westphalen, Mark
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-13T03:34:09.000
dc.date.accessioned 2020-06-29T22:38:23Z
dc.date.available 2020-06-29T22:38:23Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2004
dc.date.embargo 2012-12-03
dc.date.issued 2004-01-01
dc.description.abstract <p>A self-propelled agricultural sprayer with four-wheel steering (4WS) was developed. A digital controller was designed and built to control the rear steering angle based on that of the front wheels through electrohydraulic control valves. Three modes of steering were enabled and investigated. Experimental methods were developed to determine what potential 4WS has in improving machine performance. In particular, machine performance of the sprayer was evaluated by measuring turning radius and performance metrics in headland turning and lateral path shift procedures. Coordinated 4WS resulted in smaller turning radii than conventional two-wheel steering (2WS). In the headland turning tests, significant mean increases in aligning distance of 5.58 m and significant mean decreases in rear wheel off-tracking area of 9.3 m2 were observed in 4WS over 2WS. In lateral path correction tests, crab 4WS substantially decreased the area and magnitude of estimated application errors over conventional 2WS, while coordinated 4WS resulted in increased application errors. These results provide evidence that 4WS could enable improvement in sprayer machine performance.</p>
dc.description.comments <p>This article is from <a href="http://elibrary.asabe.org/abstract.asp?aid=16032&t=3&dabs=Y&redir=&redirType=" target="_blank"><em>Transactions of the ASAE</em></a>, 47, no. 2 (2004): 385–395.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/26/
dc.identifier.articleid 1025
dc.identifier.contextkey 3506880
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/26
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1007
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/26/Steward_2004_EffectsMultiMode.pdf|||Fri Jan 14 23:00:05 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Spray boom movement
dc.subject.keywords Sprayer control
dc.subject.keywords Steering control
dc.title Effects of Multi-Mode Four-Wheel Steering on Sprayer Machine Performance
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication ef71fa01-eb3e-4e29-ade7-bcb38f2968b0
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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