Boots – shoes – and leggings
Patent
1995-05-05
1997-11-11
Voeltz, Emanuel T.
Boots, shoes, and leggings
118683, 222 1, 222 55, 239 68, B67D 508, G01F 138
Patent
active
056870922
ABSTRACT:
A fluid dispensing control for controlling the dispensing of a fluid by a metering valve through a nozzle onto a workpiece. An initial value of a flow characteristic of the fluid is determined that is correlated to the relationship between the flow rate of the fluid and nozzle pressure. Desired nozzle pressure values are periodically determined by evaluating a model of flow rate of the fluid through nozzle in response to the initial value of the flow characteristic and a desired flow rate value. Thereafter, the control provides command signals to the metering valve as a function of the desired nozzle pressures. A new value of the flow characteristic is determined as a function of the measured volume of fluid dispensed during the dispensing cycle to the measured nozzle pressure. During a subsequent dispensing cycle, the control determines the desired nozzle pressures by evaluating the model of flow rate of the fluid through the nozzle as a function of the new value of the flow characteristic. The process of reevaluating the flow characteristic over successive dispensing cycles as a function of measured volumes of fluid dispensed and measured nozzle pressures, and using those updated values to reevaluate the model of flow rate of fluid through the nozzle, is repeated.
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Motorbooks INternational publication entitled "Automotive Fuel Injection Systems, A Technical Guide" by Jan P. Norbye, 1988.
Bretmersky Carl A.
Hall Robert C.
Klein Richard G.
Kamini Shah
Nordson Corporation
Voeltz Emanuel T.
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