Patents Assigned to Yokogawa Electronic Corporation
  • Patent number: 8135480
    Abstract: A digital indicating controller outputs data provided by performing control computation of input data and has a communication function with an external apparatus. The digital indicating controller includes a sequence computation section which executes a ladder program with at least any of the input data, the data provided by performing control computation, internal and external setup data, internal and external setup parameters, or data from the external apparatus as condition input and outputs the execution result.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: March 13, 2012
    Assignee: Yokogawa Electronic Corporation
    Inventors: Satoru Tanaka, Shuichi Mano, Norihiko Umei, Tetsuji Moriyama
  • Patent number: 6915180
    Abstract: The present invention solves the quality control problems that exist in manufacturing equipment for sheet form products, that is, although the position correspondence between actuators and measuring points has been measured and switched for every raw material recipe, it takes a lot of time and effort and if the position correspondence shifts during machine operation, the position correspondence must be measured again by measuring step responses. According to the present invention, the position correspondence, interference width, and process gain of a process model are modified so that the deviation between the process model and the measured profile is minimized by inputting the manipulated variable of the actuators to the process model. This position correspondence is also set to a cross direction controller that outputs the manipulated variable.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: July 5, 2005
    Assignee: Yokogawa Electronic Corporation
    Inventor: Takashi Sasaki