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:
Sep. 16, 1986
Filed:
Aug. 10, 1984
Sankyo Dengyo Co. Ltd., , JP;
Abstract
Method and apparatus for automatically controlling a grinding mill in a mill arrangement which includes a grinding mill, raw material feed apparatus and a controller wherein one or more signals indicative of the condition of the mill are input to the controller and compared therein to a set point to generate an output signal based on the comparison and wherein the output signal is input to the raw material feed apparatus to adjust the rate at which raw material is fed into the grinding mill include an arrangement wherein the output signal of the controller is integrated for a predetermined time to obtain a first integrated quantity, the controller set point is then automatically varied a predetermined amount in a predetermined direction such that a second controller output signal is generated, the second controller output signal is then integrated for the predetermined time to obtain a second integrated quantity, the first and second integrated quantities are then compared, and the controller set point is then automatically varied a predetermined amount in a direction determined by the comparison of the first and second integrated quantities such that a third controller output signal is generated. The third controller output signal is integrated for the predetermined time to obtain a third integrated quantity, and then after redesignating the second and third integrated quantities as the first and second integrated quantities, repeating the above steps.