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Prediction Of Lateral Force In An Off-Road Tire As A Function Of Seven Variables Using Response Surface Methodology (RSM) CIGR Journal
Abdolmaleki, Hamid; Jafari, Ali; Mousazadeh, Hossein; Hajiahmad, Ali.
In this study an in-situ Single Wheel Tester (iSWT) was used to investigate the effect of some of the most important independent variables on the lateral force of a high lug agricultural tire. The variables include some soil parameters and tire characteristics. Response Surface Methodology (RSM) also was used to construct a design of experiment and propose the lateral force model as a function of seven variables (various combination treatments of soil characteristics and tire parameters). A total of 152 experimental tests were conducted to find appropriate model. Reduced form of a quadratic model was selected to predict the tire lateral force (R2 > 0.9). The results show that the side slip angle and moisture content had major and minimal effect on tire...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Response surface methodology; Single wheel tester; Side slip angle; Normal load; Drawbar pull; Moisture content; Tire inflation pressure.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4776
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Development and evaluation of an integrated navigation system for inter-row operations CIGR Journal
jafarbiglu, hamid; Mousazadeh, Hossein; keyhani, alireza.
Simultaneous to industrial automation, automating agricultural tasks would be affordable for efficiency improvement. To obtain an applicable fully automatic vehicle in the straight rows and headland turning, an autonomous system was developed and evaluated in three different modes. The study was implemented on actual sized, renewable energy based off-road vehicle (SAPHT). Experimental evaluations were conducted based on machine vision and teleoperation modes with various speeds. The vehicle also was driven manually for comparison. RMSE analysis in the straight path illustrated the prominence of vision based guidance (10.09 cm). While in the curved test track, teleoperational navigation gives good results (12.84 cm). However for an accurate navigation,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Navigation; Teleoperation; Machine vision; Autonomous; Inter-row operation.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3312
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