Kleber R. Felizardo, Heitor V. Mercaldi, V. Oliveira, P. E. Cruvinel
{"title":"Modeling and Predictive Control of a Variable-Rate Spraying System","authors":"Kleber R. Felizardo, Heitor V. Mercaldi, V. Oliveira, P. E. Cruvinel","doi":"10.1109/EUROSIM.2013.46","DOIUrl":null,"url":null,"abstract":"In this paper, a mathematical model for a variable-rate spraying system is developed. The spraying system uses direct injection technology which allow the of different chemicals in a single application, reducing the waste of chemicals and thereby minimizing the toxicology and environmental risks associated with carrier-chemical mix preparation and discharge. In addiction, a predictive control strategy to adjust the carrier-chemical mix and chemical flow rates is proposed. To obtain the model and analyse the control strategy, a facility for site-specific application of chemicals which includes a laboratory scale sprayer test bench was designed and built. The automation of this system was based on a programmable automation controller suitable for control, acquisition and timing applications. With the predictive control approach, the errors of the carrier-chemical mix and chemical flow rates were lower than the admissible level of 5%. Practical results are presented to validate the models and show the efficiency of the control strategy proposed.","PeriodicalId":386945,"journal":{"name":"2013 8th EUROSIM Congress on Modelling and Simulation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2013-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 8th EUROSIM Congress on Modelling and Simulation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EUROSIM.2013.46","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
In this paper, a mathematical model for a variable-rate spraying system is developed. The spraying system uses direct injection technology which allow the of different chemicals in a single application, reducing the waste of chemicals and thereby minimizing the toxicology and environmental risks associated with carrier-chemical mix preparation and discharge. In addiction, a predictive control strategy to adjust the carrier-chemical mix and chemical flow rates is proposed. To obtain the model and analyse the control strategy, a facility for site-specific application of chemicals which includes a laboratory scale sprayer test bench was designed and built. The automation of this system was based on a programmable automation controller suitable for control, acquisition and timing applications. With the predictive control approach, the errors of the carrier-chemical mix and chemical flow rates were lower than the admissible level of 5%. Practical results are presented to validate the models and show the efficiency of the control strategy proposed.