Mohammad Shabbir Hossain,Scott D. Noble,David Sumner
申请号：
US14969961
公开号：
US09488512B2
申请日:
2015.12.15
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A method of determining a mass flow rate of product being applied with an agricultural implement includes the steps of:calibrating a pressure drop across a known distance in an air line at a number of air flow rates；metering a product at a desired application rate into the air line at a selected air flow rate；establishing a pressure drop across the known distance at the selected air flow rate, while the product is being metered；calculating a specific pressure drop by dividing the established pressure drop by the determined pressure drop；ascertaining the values of parameters A and B using the mathematical expression:α=1+Aμ+B√{square root over (μ)} where: α=specific pressure drop；μ=mass loading ratio； andA and B=parameters based on measured data for the specific product being applied； andestimating a mass flow rate of the product being applied.
