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Tractor stability information processing information system.

Authors
McCormack-FG; Murphy-DJ
Source
Department of Agricultural Engineering, Pennsylvania State University, University Park, Pennsylvania 1990 Apr; :1-59
Link
NIOSHTIC No.
00198486
Abstract
This study used an enhanced 1/8 scale model tractor to help verify a mathematical model which had been proposed to assist in avoiding tractor overturns on farms. The mathematical model fed back information to be used in predicting tractor instability in time for the operator to make an adjustment. The enhanced model featured remote front end steering, pneumatic tires, and a live rear differential drive. The model was verified according to the three major components of gravity, centrifugal force, and ground roughness. Ground roughness of the simulated terrain was characterized by the roll roughness coefficient, or the C-values. C- values were derived for four different size bumps: 19.1 millimeters (mm), 25.4mm, 38.1mm, and 50.8mm. The mathematical model was verified by comparing observed model tractor stability results to the predicted values of the mathematical model. Overall findings indicated that the mathematical model is a conservative predictor of model tractor side overturns. Sensitivity and response of the equation to change in roll roughness was found to be similar to the values observed with the tractor model. The centrifugal force component could not be fully validated with the 1/8 scale model tractor.
Keywords
NIOSH-Grant; Control-technology; Accident-prevention; Safety-research; Equipment-operators; Agricultural-industry
Contact
Agricultural Engineering Pennsylvania State University 204 Agriculture Engineer Bldg University Park, PA 16802
Publication Date
19900425
Document Type
Final Grant Report
Funding Amount
37521
Funding Type
Grant
Fiscal Year
1990
NTIS Accession No.
PB91-197384
NTIS Price
A05
Identifying No.
Grant-Number-R03-OH-02236
NIOSH Division
OEP
Priority Area
Control-technology
Source Name
Department of Agricultural Engineering, Pennsylvania State University, University Park, Pennsylvania
State
PA
Performing Organization
Pennsylvania State University Park, University Park, Pennsylvania
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