The Development Validation And Implementation Of A Data Acquisition System To Quantify In Field Tractor Performance Characteristics
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The Development Validation And Implementation Of A Data Acquisition System To Quantify In Field Tractor Performance Characteristics
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Author : Dalton Owen
language : en
Publisher:
Release Date : 2019
The Development Validation And Implementation Of A Data Acquisition System To Quantify In Field Tractor Performance Characteristics written by Dalton Owen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
In the agriculture industry, in-field efficiency of tractors is critical information for operators and producers. Properly matching tractor to implement using real-world tractor performance characteristics is the primary factor that effects in-field efficiency. Currently, tractor testing is primarily conducted in a controlled lab environment to quantify attributes such as power take-off (PTO) power and fuel consumption. However, in-field quantification of these attributes is necessary to gain a full understanding of the machine's performance. Therefore, this study was conducted with two primary objectives: 1) develop a data acquisition system to measure real-time tractor performance at varying machine states during field operations, and; 2) evaluate the performance of tractors individually and compared to each other. Studies were conducted to test multiple different sized tractors with varying implements used in a specific crop production cycle; these tractors included two smaller 71 HP machines, a 90 HP and a 100 HP machine. The primary performance comparison goals were to evaluate the performance efficiency differences between a cabin and open station machine of the same size, and to evaluate the differences in performance between two similarly sized machines. A custom data acquisition (DAQ) system developed comprises of a torque sensor, flow meter, and GPS to acquire target performance parameters using a National Instruments cRIO system. The PTO torque sensor and fuel flow meter were tested and validated in a controlled lab using a PTO dynamometer and fuel scale. Validation field studies conducted showed that the DAQ system captured real-time performance parameters; strong correlation was observed between power, speed, and fuel consumption. Using the real-time data allows for a better understanding of the relationship between machine and implement, as well as a more thorough understanding of the effect of terrain and crop load on fuel consumption and PTO power. The peak torque values through the implement drivetrain and their frequencies coupled with the average breakdown of power consumption by the implement gives the manufacturer and producer the opportunity to modify usage trends or design, respectively. Spatial fuel consumption data on a tractor by tractor basis allows varying machines to be compared directly based on their efficiency. Testing of the two smaller tractors took place on the same day in a uniform field. While the data did not indicate any difference between open station and cabin machines, strong correlation was observed between both operating speed and PTO mode selection and performance efficiency. The testing of the two larger tractors was done on sequential cuts of alfalfa on the same field; to account for this, bales were geotagged and weighed to produce a forage density map. Data from testing yielded two main results; the first being that the fuel consumption rate of each tractor and operation can be accurately predicted using an equation using PTO power and operating speed as variables. The equation that defines the fuel consumption for the swathing operation predicts the fuel consumption within 10% over 75% of the time in both sized machines. Data recorded by the DAQ system yields the information necessary to give the manufacturer a thorough understanding of how machines and implements interact with each other, as well as how external factors effect machine performance.
Tractor Measurement And Data Acquisition System For Hydraulic Power Draft Force And Power Take Off Torque
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Author : James B. W. Roeber
language : en
Publisher:
Release Date : 2016
Tractor Measurement And Data Acquisition System For Hydraulic Power Draft Force And Power Take Off Torque written by James B. W. Roeber and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Numerous advancements in machinery performance of agricultural tractors have been made in recent years. The Organisation for Economic Co-operation and Development (OECD) tests predetermined points (e.g., maximum power and torque) for drawbar, Power Take-Off (PTO), and hydraulic power as separate tests for tractor performance. Testing methods with the tractor operating at a steady state have been done for years, which were uncharacteristic of agricultural tractor operations in field conditions. As part of this thesis work, field usable data acquisition systems (DAQs) were developed to record implement energy consumption (e.g., drawbar loading, PTO torque, and hydraulic power). The system used LabVIEW software and National Instrument's compact data acquisition systems (cDAQs) to record data from instrumentation measuring drawbar, PTO, and hydraulic loads. Data were collected and verified in accordance with OECD standards at the Nebraska Tractor Test Lab (NTTL), an official OECD testing facility. Requirements of the systems were: implementation of each system on multiple machines with minor alterations, minimal changes to the tractor, and equivalent data compared to that recorded by the NTTL testing devices and procedures. Manufacturer's calibration information along with standardized testing equipment used to tune NTTL testing devices were used to verify that the system would provide data in conformance with OECD testing procedures. The hydraulic system was verified with varying hydraulic line curvatures near the sensors that provided data within a 1 percent difference of the actual hydraulic power. Drawbar tests included calibration of a strain gage instrumented drawbar which recorded loads within 0.67 kN of the calibration fixture. Track testing of the drawbar resulted in measured differences of less than 1 kN with the NTTL load car. For PTO measurements, a power take-off calibration was conducted using a commercially available torque transducer. No statistically significant differences were found between the torque values of the PTO transducer and the dynamometer. The differences in torque values ranged from 3 N∙m to 23 N∙m.
Computerized Data Acquisition System For Tractor Field Performance
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Author : AbdelRahman AbdelKareem Bedri
language : en
Publisher:
Release Date : 1981
Computerized Data Acquisition System For Tractor Field Performance written by AbdelRahman AbdelKareem Bedri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1978
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Developing A Data Acquisition System For Collecting Tractor Performance Data
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Author : Brian Charles Greer
language : en
Publisher:
Release Date : 2000
Developing A Data Acquisition System For Collecting Tractor Performance Data written by Brian Charles Greer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Design Development And Testing Of A Tractor Data Acquisition System
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Author : D. Marshall
language : en
Publisher:
Release Date : 1982
Design Development And Testing Of A Tractor Data Acquisition System written by D. Marshall and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
A Second Generation Tractor Performance Data Acquisition System
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Author :
language : en
Publisher:
Release Date : 1989
A Second Generation Tractor Performance Data Acquisition System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Development Of A Tractor Data Acquisition System
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Author : TES Ltd
language : en
Publisher:
Release Date : 1982
Development Of A Tractor Data Acquisition System written by TES Ltd and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Agricultural machinery categories.
Transactions Of The Asae
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Author : American Society of Agricultural Engineers
language : en
Publisher:
Release Date : 1982
Transactions Of The Asae written by American Society of Agricultural Engineers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Agricultural engineering categories.
Instrumentation To Measure Fwda Tractor Performance
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Author : Tingfan Pang
language : en
Publisher:
Release Date : 1989
Instrumentation To Measure Fwda Tractor Performance written by Tingfan Pang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Abstract: An instrumentation system was developed on a 63.4 KW FWDA (Front Wheel Drive Assist) KUBOTA M8 950DT tractor to measure tractor horizontal and vertical drawbar pull forces, rotational wheel speeds, true ground speed and fuel consumption. Three bi-directional strain gaged clevis pins were used as an integrally mounted three point hitch dynamometer. An on-board MEGADAC data acquisition system was employed for monitoring and recording tractor performance parameters. This system was interfaced with an IBM microcomputer via RS-232-C for data analysis. Procedures for development are reported along with results from field tests.