{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/23678"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/23678","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Design of sprayer boom suspensions through computer simulation and design optimization","abstract":"Control of the movement of the field sprayer boom will directly enhance uniform deposition of chemicals. Means are necessary to insure that the boom structure supporting the spray applicators follows low frequency ground slope changes and to insure attenuation of high frequency signals from the sprayer boom. Suspensions between the sprayer boom and the sprayer improve control of boom movement. The suspension designs analyzed in this study include: central pivot, simple pendulum, double pendulum, and twin-link. The suspension models derived for this study consisted of two-dimensional roll models for analysis of the vertical movement of the sprayer boom in relation to the input excitation to the suspension system. The design procedure developed for use on personal computers combines existing optimization and dynamic simulation codes to measure suspension performance and to determine design parameters that improve suspension performance. The designer specifies the input excitation to the suspension system and the desired performance criteria that define overall suspension performance.","abstract_html":"Control of the movement of the field sprayer boom will directly enhance uniform deposition of chemicals. Means are necessary to insure that the boom structure supporting the spray applicators follows low frequency ground slope changes and to insure attenuation of high frequency signals from the sprayer boom. Suspensions between the sprayer boom and the sprayer improve control of boom movement. The suspension designs analyzed in this study include: central pivot, simple pendulum, double pendulum, and twin-link. The suspension models derived for this study consisted of two-dimensional roll models for analysis of the vertical movement of the sprayer boom in relation to the input excitation to the suspension system. The design procedure developed for use on personal computers combines existing optimization and dynamic simulation codes to measure suspension performance and to determine design parameters that improve suspension performance. The designer specifies the input excitation to the suspension system and the desired performance criteria that define overall suspension performance.","abstract_has_math":false,"creators":["Derksen, Richard Charles"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Engineering, Agricultural","degree_department":null,"school":null,"contributors":["Coddington, Richard C."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T14:23:00Z","date_published":"2011-05-07T14:23:00Z","updated_at":"2026-07-22T22:25:22Z","subjects":["Engineering, Agricultural"],"languages":["eng"],"rights":["Copyright 1989 Derksen, Richard Charles"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI8924806","(UMI)AAI8924806"],"render_values":[{"text":"AAI8924806","href":null,"code":true},{"text":"(UMI)AAI8924806","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/23678","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Coddington, Richard C."]},{"key":"dc:creator","label":"Author","values":["Derksen, Richard Charles"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T14:23:00Z","10000-01-01","1989"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Engineering, Agricultural"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Agricultural"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1989 Derksen, Richard Charles"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI8924806","(UMI)AAI8924806","http://hdl.handle.net/2142/23678"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Control of the movement of the field sprayer boom will directly enhance uniform deposition of chemicals. Means are necessary to insure that the boom structure supporting the spray applicators follows low frequency ground slope changes and to insure attenuation of high frequency signals from the sprayer boom. Suspensions between the sprayer boom and the sprayer improve control of boom movement. The suspension designs analyzed in this study include: central pivot, simple pendulum, double pendulum, and twin-link. The suspension models derived for this study consisted of two-dimensional roll models for analysis of the vertical movement of the sprayer boom in relation to the input excitation to the suspension system. The design procedure developed for use on personal computers combines existing optimization and dynamic simulation codes to measure suspension performance and to determine design parameters that improve suspension performance. The designer specifies the input excitation to the suspension system and the desired performance criteria that define overall suspension performance.","Transient suspension response during conditions of low frequency excitation of 0.6 rad/s and high frequency excitation of 5.0 rad/s indicated overall suspension performance. The optimization algorithm made adjustments to suspension geometry, suspension location, and the damping and stiffness properties of the suspension systems in search of improved suspension designs. The optimum double pendulum suspension provides the best balance in boom position error between the low and high frequency test conditions. The optimum twin-link suspension allows better transmission of low frequency rolling ground motion to the boom than the other suspension designs at a cost of reduced attenuation of high frequency signals. The optimum twin-link suspension allows greater flexibility for changes in boom height and best meets the performance criteria used to determine acceptable suspension designs. Simulations of sprayer travel over an artificial bumptrack representation verify the desirable performance characteristics of the optimum double pendulum and twin-link suspensions. Lighter boom configuration allows better control of boom movement, assuming the boom is a rigid body. Results of studies incorporating a low pass filter element into the optimum passive suspension designs indicates potential for future use of active suspension elements added to passive suspension designs.","Made available in DSpace on 2011-05-07T14:23:00Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 8924806.pdf: 7190488 bytes, checksum: 6aa6679d0630d9e754ed86af4e4df90a (MD5) Previous issue date: 1989","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:06:06Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:31:43-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Design of sprayer boom suspensions through computer simulation and design optimization"]}]}],"canonical_facts":{"dc:contributor":["Coddington, Richard C."],"dc:creator":["Derksen, Richard Charles"],"dc:date":["2011-05-07T14:23:00Z","10000-01-01","1989"],"dc:description":["Control of the movement of the field sprayer boom will directly enhance uniform deposition of chemicals. Means are necessary to insure that the boom structure supporting the spray applicators follows low frequency ground slope changes and to insure attenuation of high frequency signals from the sprayer boom. Suspensions between the sprayer boom and the sprayer improve control of boom movement. The suspension designs analyzed in this study include: central pivot, simple pendulum, double pendulum, and twin-link. The suspension models derived for this study consisted of two-dimensional roll models for analysis of the vertical movement of the sprayer boom in relation to the input excitation to the suspension system. The design procedure developed for use on personal computers combines existing optimization and dynamic simulation codes to measure suspension performance and to determine design parameters that improve suspension performance. The designer specifies the input excitation to the suspension system and the desired performance criteria that define overall suspension performance.","Transient suspension response during conditions of low frequency excitation of 0.6 rad/s and high frequency excitation of 5.0 rad/s indicated overall suspension performance. The optimization algorithm made adjustments to suspension geometry, suspension location, and the damping and stiffness properties of the suspension systems in search of improved suspension designs. The optimum double pendulum suspension provides the best balance in boom position error between the low and high frequency test conditions. The optimum twin-link suspension allows better transmission of low frequency rolling ground motion to the boom than the other suspension designs at a cost of reduced attenuation of high frequency signals. The optimum twin-link suspension allows greater flexibility for changes in boom height and best meets the performance criteria used to determine acceptable suspension designs. Simulations of sprayer travel over an artificial bumptrack representation verify the desirable performance characteristics of the optimum double pendulum and twin-link suspensions. Lighter boom configuration allows better control of boom movement, assuming the boom is a rigid body. Results of studies incorporating a low pass filter element into the optimum passive suspension designs indicates potential for future use of active suspension elements added to passive suspension designs.","Made available in DSpace on 2011-05-07T14:23:00Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 8924806.pdf: 7190488 bytes, checksum: 6aa6679d0630d9e754ed86af4e4df90a (MD5) Previous issue date: 1989","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:06:06Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:31:43-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["AAI8924806","(UMI)AAI8924806","http://hdl.handle.net/2142/23678"],"dc:language":["eng"],"dc:rights":["Copyright 1989 Derksen, Richard Charles"],"dc:subject":["Engineering, Agricultural"],"dc:title":["Design of sprayer boom suspensions through computer simulation and design optimization"],"dc:type":["text"],"thesis:degree_discipline":["Engineering, Agricultural"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:22Z"}