Patents Assigned to PREFEED CORPORATION
  • System for identifying cause of abnormality, method of identifying cause of abnormality, and program for identifying cause of abnormality
    Patent number: 8972222
    Abstract: A system includes a measured value storing device in which a product measured value acquired periodically and a manufacturing condition measured value are stored, a product threshold value setting device that sets a product threshold value for determining whether a product is normal or not, an abnormality accumulating device that acquires a product abnormality cumulative frequency where the product abnormality measured value exceeds the product threshold value, a product threshold value changing device that changes the product threshold value, a condition threshold value setting device that sets a condition threshold value to be compared with a manufacturing condition measured value, a condition abnormality accumulating device that acquires a condition cumulative frequency, a condition threshold value changing device that changes a condition threshold value, and a cause identifying device that identifies a cause of abnormality based on the distribution of the product abnormality cumulative frequency and a man
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: March 3, 2015
    Assignee: Prefeed Corporation
    Inventor: Yoshio Kumagae
  • SYSTEM FOR IDENTIFYING CAUSE OF ABNORMALITY, METHOD OF IDENTIFYING CAUSE OF ABNORMALITY, AND PROGRAM FOR IDENTIFYING CAUSE OF ABNORMALITY
    Publication number: 20140358481
    Abstract: A system includes a measured value storing device in which a product measured value acquired periodically and a manufacturing condition measured value are stored, a product threshold value setting device that sets a product threshold value for determining whether a product is normal or not, an abnormality accumulating device that acquires a product abnormality cumulative frequency where the product abnormality measured value exceeds the product threshold value, a product threshold value changing device that changes the product threshold value, a condition threshold value setting device that sets a condition threshold value to be compared with a manufacturing condition measured value, a condition abnormality accumulating device that acquires a condition cumulative frequency, a condition threshold value changing device that changes a condition threshold value, and a cause identifying device that identifies a cause of abnormality based on the distribution of the product abnormality cumulative frequency and a man
    Type: Application
    Filed: May 13, 2014
    Publication date: December 4, 2014
    Applicant: PREFEED CORPORATION
    Inventor: Yoshio KUMAGAE