This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Hydraulic System Control of Material Flow Rates with High Speed Resolution Capabilities
Annotation ability available
Sector:
Language:
English
Abstract
A multi-sensing device with a piezoresistive pressure sensor for hydraulic system control was developed, applied to a hydraulic belt conveyor and tested. The following variables were measured and could be analyzed: speed, torque, absolute displacement, horsepower, pressure, oil flow rate, mass flow rate of conveyed materials and even malfunction diagnosis. The concept may have applications in automated payload measuring on cargo aircraft, although the primary interest was for agricultural applications. Hydraulic motor speeds with high resolutions were measured. Also, relationships between mass flow rates on the conveyor belt and required torque due to loading under various situations were presented. A formula for calculating effective belt tension was developed and could be used to control mass flow by measuring the change in motor torque. This multi-sensing device and control system would be applied to any hydraulic system with hydraulic motors.
Authors
Citation
Cho, S., Krutz, G., and Miles, G., "Hydraulic System Control of Material Flow Rates with High Speed Resolution Capabilities," SAE Technical Paper 871866, 1987, https://doi.org/10.4271/871866.Also In
References
- CEMA 1979 Belt Conveyors for Bulk Materials 2nd CBI Publishing Company Inc. New York 76 203
- Cho Seong I. 1986 Correlation of Torque and Mass Flow Rate for Belt Conveying of Agricultural Materials . Master Thesis Agricultural Engineering Dept., Purdue University
- Colijn H. 1983 Weighing and Proportioning of Bulk Solids 2nd Trans Tech Publications, Federal Republic Germany 141 343
- Dransfield P. 1981 Hydraulic Control Systems-Design and Analysis of Their Dynamics Springer-Verlag New York 95 182
- Evans M.D. Krutz G.W. Beasley D.B. 1983 “Integral Hydraulic Motor Speed and Torque Sensor” ASAE paper 83-1595 ASAE St. Joseph, MI 49085 U.S. Patent No. 4,593,555
- Hansen D. Krutz G.W. 1984 “Hydraulic Motor Speed, Torque, and Rotational Displacement Sensing” 40th National Conference on Fluid Power 38 237 246 1987
- Hennessey M. 1985 “A Microcomputer Data Acquisition Package for Demonstration of a Hydraulic Sensor” Ag Engr. Purdue University
- Merritt H.E. 1967 Hydraulic Control Systems John Wiley & Sons Inc. New York 54 75 132 173
- Miles G. E. 1984 “On-Line Data Acquisition” Agricultural Engineering, Purdue University IN
- Renvert P. Weiler W. 1983 “The Comparison of Various Test Methods to Determine the Starting and Low Speed Characteristics of Hydraulic Motors with regard to their Practical Use” J. of Fluid Control 14 3 63 91
- SenSym 1983 Pressure Transducer Handbook SenSym Inc. Sunnyvale, CA 1 11
- Texas Instruments 1983 VPU 200 Programming and Control Vision Unit Manual 2nd Texas Instruments Industrial Systems Johnson City, TN
- Towers R.R. 1976 Belt Conveyor , Feed Manufacturing Technology AFMA Inc. 441 447