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Guidance system for agricultural tractor with four wheel steering

Timo Oksanen, Juha Backman
2013 IFAC Proceedings Volumes  
In a typical automatic guidance system for agricultural machines, the guidance system controls only one degree of freedom; either the steering angle of the front wheels of the tractor or other steering  ...  In a tractor with the multiple degrees of freedom, like four wheel steering, the guidance system may use both the degrees of freedom for path tracking.  ...  ACKNOWLEDGEMENTS This research was funded by Academy of Finland.  ... 
doi:10.3182/20130327-3-jp-3017.00030 fatcat:q2mo2vfxwrcvbf3madoajwf7ni

Research on Calibration Method for Tractor Automatic Navigation Control System

Qun Sun, Shaomin Teng, Yongqi Du, Ze Kang, Chengqiang Yin, Linlin Chen
2016 Open Electrical & Electronic Engineering Journal  
A lower computer control system of tractor automatic navigation based on double-antennas Beidou satellite is developed, including the controller unit, bipolar output unit, RS232 bus communication unit,  ...  Continuous voltage from -10V to +10V is output through the bipolar output unit to adjust hydraulic valves to control the tractor steering after these are processed by the lower computer.  ...  A lower machine control system applicable to the hydraulic steering tractor automatic navigation is designed and its calibration method is studied in this article.  ... 
doi:10.2174/1874129001610010129 fatcat:x5n7byfmebfithef37wo2e6kv4

Evaluation of soil EC mapping driven by manual and autopilot-automated steering systems of tractor on oil palm plantation terrain

Azmi M.A., Mohammad R., D.E. Pebrian
2020 Food Research  
This study evaluated the precision of tractor operations with soil sensor implement using manual and autopilot-automated steering systems on oil palm plantation terrain in Malaysia.  ...  The autopilot-automated steering system is one of today's modern technologies in a tractor's driving system for conducting the operations in farmland.  ...  Acknowledgments The authors are very grateful to the Sime Darby Plantation Berhad for providing the study area for this research project.  ... 
doi:10.26656/fr.2017.4(s5).015 fatcat:c33lihgohzag5pacnhc5isfalq

Hybrid Steering Systems for Automotive Applications [chapter]

Nicolae Vasiliu, Daniela Vasiliu, Constantin Drăgoi, Constantin Călinoiu, Toma Cojocaru-Greblea
2020 Automotive System Engineering - New Methods and Optimal Solutions [Working Title]  
The authors studied the accuracy of the hybrid steering system of an articulated tractor based on a digital industrial servo valve combined with an ORBITROL standard unit.  ...  The structure of the last generation of the trucks hybrid steering systems was also studied, taking into account the real performances of each component.  ...  Along 10 years, he helped us to create new hydraulic control systems, and supplied us with high-level software for teaching our students. 23 Hybrid Steering Systems for Automotive Applications DOI: http  ... 
doi:10.5772/intechopen.94460 fatcat:fobzzxg2j5dpxbk72zhjvhr5da

The Tractor-Cart System Controller with Fuzzy Logic Rules

Nadia Delavarpour, Sulaymon Eshkabilov, Thomas Bon, John Nowatzki, Sreekala Bajwa
2020 Applied Sciences  
There is insufficient research in automatic control of a towed cart.  ...  An automatic guidance system on the tractor is the solution of the issue; however, tractor's auto-guidance does not guarantee the cart clear and exact following of the tractor.  ...  , "CropSys-A novel management approach to increase productivity, resilience, and long-term sustainability of cropping systems in the northern Great Plains".  ... 
doi:10.3390/app10155223 fatcat:juix2k3nijekjegfffops5ad64

Safety aspects for automatic guidance of agricultural machines and low-cost solutions

U. Klee, L. Hofmann, P. Pickel
2012 Research in Agricultural Engineering  
Automatic steering devices for farm machinery and tractors have the task to relieve the driver from the physical and mental stress of monotonous steering work.  ...  Most of these problems may be prevented by a safety system for automatically steered agricultural machinery developed at the Department of Agricultural Engineering of the Martin-Luther-University in Halle  ...  For many years, the development of automatic steering devices for farm machines and tractors has been a research object both in industry and institutions of higher education.  ... 
doi:10.17221/4959-rae fatcat:jsznf7ikunde5hhxbjj5orl6f4

A Review of Current and Historical Research Contributions to the Development of Ground Autonomous Vehicles for Agriculture

Valda Rondelli, Bruno Franceschetti, Dario Mengoli
2022 Sustainability  
The review was motivated by the intent to disseminate to the scientific community the main features of the autonomous tractor named BOPS-1960, which was conceived in the 1960s at the Alma Mater Studiorum  ...  This review aimed to provide a literature evaluation of present and historical research contributions toward designing and prototyping agricultural ground unmanned vehicles.  ...  Acknowledgments: The authors appreciate the support and help of Giulia Piovaccari in references analysis. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/su14159221 fatcat:uzy5w2r5fraatd5636nrr4d33a

ZERO/MINIMUM TURNING RADIUS OF A TRACTOR

Sumair Sunny .
2014 International Journal of Research in Engineering and Technology  
In this paper we have taken a conventional tractor and endowed it with the ability to take turns with a much smaller turning radius.  ...  The base-line tractor we have considered is the John Deere 5065 E model. We try to achieve our goal without over complicating the original design.  ...  Instead there are only 3 DCV control levers. This makes operating the tractor very simple. The tractor would operate similar to an automatic vehicle or a CVT driven vehicle.  ... 
doi:10.15623/ijret.2014.0309008 fatcat:nlopocjgd5gobpooxka3zvkosu

Feedforward-plus-proportional-integral-derivative controller for an off-road vehicle electrohydraulic steering system

H Qiu, Q Zhang
2003 Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering  
This paper presents the use of a feedforward-plus-proportional-integral-derivative ( FPID) controller for improving the control performance of the electrohydraulic steering system on an oroad vehicle.  ...  On-simulator evaluation tests veri ed that the FPID resulted in a superior steering rate tracking performance over both a feedforward controller and a PID controller.  ...  ACKNOWLEDGEMENTS This research was supported by the USDA Hatch Funds, Illinois C-FAR Funds and the Case Corporation.  ... 
doi:10.1243/095440703321645089 fatcat:vcv4r7mqbrfetlinjrimt74ciq

Accuracy and Performance Experiences of Four Wheel Steered Autonomous Agricultural Tractor in Sowing Operation [chapter]

Timo Oksanen
2015 Springer Tracts in Advanced Robotics  
In case of an autonomous agricultural vehicle, the path is provided to the guidance or navigation system that steers the vehicle.  ...  The full size tractor is equipped with 2.5 m hitch mounted seed drill and the developed guidance system is used to sow about six hectares spring wheat.  ...  This research was funded by Academy of Finland.  ... 
doi:10.1007/978-3-319-07488-7_29 fatcat:watacxp2jbgh3hrrjoucav6tsi

Navigation of an Autonomous Tractor for a Row-Type Tree Plantation Using a Laser Range Finder—Development of a Point-to-Go Algorithm

Pawin Thanpattranon, Tofael Ahamed, Tomohiro Takigawa
2015 Robotics  
To enable such a navigation system for the plantation system, a laser range finder (LRF) was used as a single sensor to detect objects and navigate a full-size autonomous agricultural tractor.  ...  The LRF was used to control the tractor as it followed a path, and landmarks were detected "on-the-go" in real time.  ...  The full-size tractor was modified with an autonomous control unit using a hydraulic actuator for steering, shifting gears and braking.  ... 
doi:10.3390/robotics4030341 fatcat:iaxix7n76bc7fgzy5vlqgwzyoa

Page 26 of Engineering and Mining Journal Vol. 162, Issue 10 [page]

1961 Engineering and Mining Journal  
The hydraulic steering system uses two direct-acting rams with fewer pivot points.  ...  “Keep-clean” Hydraulic System: A _ valuable, exclusive HOUGH feature is the closed and pressure- controlled hydraulic system to keep out air-borne THE FRANK G.  ... 

Bin-Dog: A Robotic Platform for Bin Management in Orchards

Yunxiang Ye, Zhaodong Wang, Dylan Jones, Long He, Matthew Taylor, Geoffrey Hollinger, Qin Zhang
2017 Robotics  
The entire system includes two major components: (1) A bin-dog prototype that can deliver an empty bin and remove a full bin from an alleyway in one trip, and (2) A control and navigation system to assist  ...  Due to the development of computing units and sensor technologies and efforts from numerous researchers, Global Positioning Systems (GPS) and vision-guided vehicles have been widely implemented on farming  ...  This research prototype is built with two main components: the driving and steering system, and the bin-loading system. A hydraulic system is used to actuate both systems.  ... 
doi:10.3390/robotics6020012 fatcat:3vd2rh73tbeevox66y2amq665m

Development of a Depth Control System Based on Variable-Gain Single-Neuron PID for Rotary Burying of Stubbles

Mingkuan Zhou, Junfang Xia, Shuai Zhang, Mengjie Hu, Zhengyuan Liu, Guoyang Liu, Chengming Luo
2021 Agriculture  
Compared with the current angle of the upper swing arm, the microcontroller controlled an electronic-control proportional hydraulic system, so that the height of the rotary tiller could be adjusted to  ...  Field experiments showed that when the operation speed of the tractor-rotary tiller system was about 0.61 m/s, the variable-gain single-neuron PID algorithm could effectively improve the stability of the  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/agriculture12010030 fatcat:xwi3hbd3yzgjzojxvjf6u5bs7m

Semi-automatic coupling of an agricultural tractor and a trailer

V. Matikainen, J. Backman, A. Visala
2014 IFAC Proceedings Volumes  
In this research a system assisting the operator of an agricultural tractor in coupling a trailer was developed.  ...  The tractors speed and curvature are then automatically controlled to align the draw hook with the towing eyelet.  ...  Even though a tractor is kinematically a MIMO-system, we control the velocity and steering separately.  ... 
doi:10.3182/20140824-6-za-1003.00437 fatcat:pumnt5ekk5hzbomv4xupgpauia
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