Patents by Inventor Fumihiro Sugawara

Fumihiro Sugawara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9945908
    Abstract: An actuator fault detection device that detects a fault of an actuator driven according to a manipulation variable MV output from a controlling device, including: a position acquiring portion that acquires a value of a motor position MP from a detector that detects a position of an actuator corresponding to a manipulation variable MV; a follow-up difference calculating portion that calculates a follow-up difference DM=MV?MP; and an allowable range determining portion that determines whether or not high speed operation or low speed operation of the actuator departs from an allowable range based on a manipulation variable change rate ?MV, an actuator position change rate ?MP, and the follow-up difference DM.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: April 17, 2018
    Assignee: Azbil Corporation
    Inventors: Masato Tanaka, Fumihiro Sugawara, Tomohiko Aikawa
  • Patent number: 9897982
    Abstract: A PID controller includes: a manipulated variable calculating portion that calculates a manipulated variable MV based on a set point SP and a process variable PV through a PID control calculation; a manipulated variable outputting portion that outputs a manipulated variable MV to outside of the controller; an alarm notifying portion that generates an alarm when a problem has been detected; a data recording portion that temporarily records time series data for the process variable PV; and a data storing portion that reads out and storing data recorded by the data recording portion 15 before and after the alarm event.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: February 20, 2018
    Assignee: AZBIL CORPORATION
    Inventors: Masato Tanaka, Eisuke Toyoda, Fumihiro Sugawara
  • Publication number: 20170030972
    Abstract: An actuator fault detection device that detects a fault of an actuator driven according to a manipulation variable MV output from a controlling device, including: a position acquiring portion that acquires a value of a motor position MP from a detector that detects a position of an actuator corresponding to a manipulation variable MV; a follow-up difference calculating portion that calculates a follow-up difference DM=MV?MP; and an allowable range determining portion that determines whether or not high speed operation or low speed operation of the actuator departs from an allowable range based on a manipulation variable change rate ?MV, an actuator position change rate ?MP, and the follow-up difference DM.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 2, 2017
    Applicant: Azbil Corporatioin
    Inventors: Masato TANAKA, Fumihiro SUGAWARA, Tomohiko AIKAWA
  • Publication number: 20160282829
    Abstract: A controller includes a control computation unit, a control computation output correction unit, and a final-control-element output upper-lower limit processing unit. The control computation unit calculates, for each control cycle, a control computation output value by performing a control computation using a controlled variable and a set point as input values. The control computation output correction unit corrects the control computation output value to a predetermined final-control-element output upper limit in a case where the control computation output value is equal to or larger than a predetermined threshold A. The final-control-element output upper-lower limit processing unit outputs to a control target a value obtained by limiting the corrected control computation output value to a value that is equal to or larger than a predetermined final-control-element output lower limit and that is equal to or smaller than the final-control-element output upper limit, as a final-control-element output value.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 29, 2016
    Applicant: AZBIL CORPORATION
    Inventors: Hayato MOTOHASHI, Fumihiro SUGAWARA, Toru TAKAGI
  • Publication number: 20160004226
    Abstract: A PID controller includes: a manipulated variable calculating portion that calculates a manipulated variable MV based on a set point SP and a process variable PV through a PID control calculation; a manipulated variable outputting portion that outputs a manipulated variable MV to outside of the controller; an alarm notifying portion that generates an alarm when a problem has been detected; a data recording portion that temporarily records time series data for the process variable PV; and a data storing portion that reads out and storing data recorded by the data recording portion 15 before and after the alarm event.
    Type: Application
    Filed: June 30, 2015
    Publication date: January 7, 2016
    Applicant: Azbil Corporation
    Inventors: Masato TANAKA, Eisuke TOYODA, Fumihiro SUGAWARA
  • Publication number: 20160004246
    Abstract: A PID controller includes: a manipulated variable outputting portion that outputs, to a subject of control, a manipulated variable MV calculated by a manipulated variable calculating portion; a long cycle data storing portion that stores, with each first cycle, time series data for the process variable PV; a short cycle data recording portion that records temporarily, with each second cycle that is shorter than the first cycle, time series data for the process variable PV; and a short cycle data storing portion that reads out from the short cycle data recording portion, and stores, data for an interval wherein there has been a change of at least a prescribed amount in the process variable PV, when there has been a change of at least the prescribed amount in the process variable PV that is recorded in the short cycle data recording portion.
    Type: Application
    Filed: July 6, 2015
    Publication date: January 7, 2016
    Applicant: Azbil Corporation
    Inventors: Masato TANAKA, Eisuke TOYODA, Fumihiro SUGAWARA
  • Publication number: 20150019040
    Abstract: A regulator has: a data recording portion recording a setting value; an elapsed time measuring portion measuring elapsed time after commencement of data collection; a data collection initiating portion initiating the data collection if a direction of change of the setting value is a direction of change of the setting value that is a trigger for starting the data collection, when the data collection is stopped; a data collection terminating portion terminating the data collection when time elapsed after the commencement of the data collection has arrived at a data collection termination time limit, when the data collection is being performed; and a data displaying portion switching a display of a graph display of most recent time-series data, from the commencement of most recent data collection until termination of the most recent data collection, recorded by the data recording portion, when the data collection has been completed.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 15, 2015
    Applicant: AZBIL CORPORATION
    Inventors: Masato TANAKA, Eisuke TOYODA, Tomoyasu MAEDA, Fumihiro SUGAWARA
  • Publication number: 20150019596
    Abstract: A regulator includes an elapsed time measuring portion that measures an elapsed time after commencement of data collection, a data recording portion that records a setting value, a process variable and a manipulated variable, a data collection initiating portion that initiates the data collection when a direction of change of the setting value, when the data collection is stopped, is in a same direction as a direction of change that is a trigger for initiating the data collection, and a data collection terminating portion that terminates the data collection when the direction of change of the setting value, when data is being collected, is in the direction opposite from the direction of change that is the trigger for initiating the data collection, or when time elapsed after the commencement of data collection arrives at a time limit stored in a time limit recording portion of the regulator.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 15, 2015
    Applicant: AZBIL CORPORATION
    Inventors: Masato TANAKA, Eisuke TOYODA, Tomoyasu MAEDA, Fumihiro SUGAWARA
  • Publication number: 20060207272
    Abstract: A control apparatus used in a control system in which the cycle time of a time proportioning signal is long, for example, a temperature control system using a cooler. Even if a manipulation value MV with respect to the cooler is drastically changed along with change of a control target value SP, the activation timing of a time proportioning output section is reset with the changing timing, so that a time proportioning signal Ton is newly generated. Alternatively, with the changing timing, the time proportioning output section is reactivated to generate the deficiency of the time proportioning signal Ton according to an increasing amount of the manipulation value MV. As a result, the time proportioning signal Ton is changed with an excellent follow-up ability.
    Type: Application
    Filed: March 9, 2006
    Publication date: September 21, 2006
    Applicant: YAMATAKE CORPORATION
    Inventors: Hirofumi Hirayama, Fumihiro Sugawara