The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 1997
Filed:
Jun. 27, 1994
OC Engineering Co., Ltd., Osaka-Fu, JP;
Ishizuka Glass Co., Ltd., Aichi Pref., JP;
Abstract
A process for controlling the temperature of glass inside a forehearth for the formation of gobs comprises the steps of: determining a set temperature of the glass in the zone No. 1 by effecting a fuzzy inference based on a preset membership function and a preset inference rule of a preset fuzzy set by using two variables, i.e., a deviation between a measured temperature and a set temperature of glass in the spout portion and a timevarying change amount between a temperature measured at a current measurement and a temperature measured at a previous measurement with respect to the glass in the spout portion, as an antecedence; determining a set temperature of the glass in each of zone Nos. 2 and 3 through a fuzzy inference based on a preset membership function and a preset inference rule of a preset fuzzy set through taking two variables, i.e., a deviation amount between a temperature of the glass measured in each of the zone Nos. 2 and 3 and a set temperature of the glass therefor and a time-varying change amount between a temperature measured at a current measurement and a temperature measured at a previous measurement, as an antecedence; and controlling an amount of a combustion gas through each burners by adjusting a set open degree of each cooling valve and a set value of the glass in each of the zone Nos. 1 through 3 based on the set temperatures determined.