Measuring and testing – Particle size
Patent
1992-01-23
1994-11-01
Noland, Tom
Measuring and testing
Particle size
364555, G01N 1502
Patent
active
053599063
ABSTRACT:
A method of using a technique of fuzzy inference for partioning a particle size distribution diagram indicative of a relationship between particle size and its frequency of a mixture of several kinds of granular substances, such as white blood corpuscles including lymph corpuscles, monocytes and granulocytes, to define particle size regions for the respective substances. More particularly, some estimation points are selected on the abscissa of the particle size distribution diagram and some characteristic parameters are calculated at each estimation point with the corresponding frequency. A fuzzy production rule for each characteristic parameter is applied to seek an estimated value of the estimation point and the estimated values for all characteristic parameters at each estimation point are combined to obtain a composite estimated value. The estimation point corresponding to the greatest one of all resultant composite estimated values is appointed to an objective partition point.
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patent: 3515884 (1979-06-01), Imadate
patent: 3944797 (1976-03-01), Coulter et al.
patent: 4128884 (1978-12-01), England
patent: 4817446 (1989-04-01), Kanamri
Noland Tom
Toa Medical Electronics Company, Limited
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