Patents by Inventor Kouhei Ohnishi

Kouhei Ohnishi 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).

  • Publication number: 20210107134
    Abstract: A haptic transmission system includes a master device and a slave device. The master device controls position and force in an operation of the master device based on information acquired from the operation of the master device and information relating to a response of the slave device, and compensates for a communication delay in a communication path with respect to the control of force. The slave device controls speed and force in an operation of the slave device based on information acquired from the operation of the slave device and information relating to control from the master device.
    Type: Application
    Filed: March 7, 2019
    Publication date: April 15, 2021
    Applicants: KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY, KEIO UNIVERSITY
    Inventors: Tomoyuki SHIMONO, Takahiro MIZOGUCHI, Kouhei OHNISHI, Tetsuya TASHIRO
  • Publication number: 20200376681
    Abstract: Provided is technology for more appropriately realizing a human physical-act using a robot. This position/force control device comprises: an act time information retaining means for retaining a time interval or a time stamp of an act, in addition to act information when the act is recorded; a control reference information generation means for generating, from the recorded act information, information to serve as a control reference when the act is replicated; a control timing determination means for determining, from the recorded act time information, a timing for outputting the control reference information when the act is replicated; and a position/force control means for replicating the act on the basis of the generated control reference information and the determined control timing.
    Type: Application
    Filed: December 14, 2018
    Publication date: December 3, 2020
    Applicants: KEIO UNIVERSITY, Motion Lib, Inc.
    Inventors: Kouhei OHNISHI, Takahiro NOZAKI, Takahiro MIZOGUCHI, Wataru IIDA
  • Patent number: 10562183
    Abstract: A position/force controller includes a function-dependent force/speed distribution conversion unit that, on the basis of speed, position and force information relating to a position based on an action of an actuator and control reference information, performs a conversion to distribute control energy to at least one of speed or position energy and force energy according to a function that is being realized. A control amount calculation unit calculates at least one of a speed or position control amount and a force energy on the basis of at least one of the speed or position energy and the force energy distributed by the force/speed distribution conversion unit. An integration unit integrates speed or position control amount with force control amount and, to return an output to the actuator, performs a reverse conversion on the speed or position control amount and the force control amount and determines an input to the actuator.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: February 18, 2020
    Assignee: KEIO UNIVERSITY
    Inventors: Kouhei Ohnishi, Sho Sakaino, Takahiro Nozaki
  • Publication number: 20190143510
    Abstract: A position/force controller includes a function-dependent force/speed distribution conversion unit that, on the basis of speed, position and force information relating to a position based on an action of an actuator and control reference information, performs a conversion to distribute control energy to at least one of speed or position energy and force energy according to a function that is being realized. A control amount calculation unit calculates at least one of a speed or position control amount and a force energy on the basis of at least one of the speed or position energy and the force energy distributed by the force/speed distribution conversion unit. An integration unit integrates speed or position control amount with force control amount and, to return an output to the actuator, performs a reverse conversion on the speed or position control amount and the force control amount and determines an input to the actuator.
    Type: Application
    Filed: January 11, 2019
    Publication date: May 16, 2019
    Applicant: KEIO UNIVERSITY
    Inventors: Kouhei OHNISHI, Sho SAKAINO, Takahiro NOZAKI
  • Patent number: 10220512
    Abstract: A position/force controller performs: detecting information relating to a position based on the effect of an actuator; converting by distributing control energy to speed or positional energy and force energy in response to functions realized on the basis of speed (position) and force information corresponding to the information relating to the position and on the basis of information serving as a reference for control; calculating the control amount for speed or position on the basis of the speed or positional energy; calculating the force control amount on the basis of the force energy; and integrating the speed or position control amount and the force control amount and performing a reverse conversion on the speed or position control amount and the force control amount to return the output to the actuator, to determine the input to the actuator.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: March 5, 2019
    Assignee: KEIO UNIVERSITY
    Inventors: Kouhei Ohnishi, Sho Sakaino, Takahiro Nozaki
  • Publication number: 20160207196
    Abstract: Provided is a technique for more appropriately realizing human-like movement by a robot. This position/force controller performs: detecting information relating to a position based on the effect of an actuator; converting by distributing control energy to speed or positional energy and force energy in response to functions realized on the basis of speed (position) and force information corresponding to the information relating to the position and on the basis of information serving as a reference for control; calculating the control amount for speed or position on the basis of the speed or positional energy; calculating the force control amount on the basis of the force energy; and integrating the speed or position control amount and the force control amount and performing a reverse conversion on the speed or position control amount and the force control amount to return the output to the actuator, to determine the input to the actuator.
    Type: Application
    Filed: September 2, 2014
    Publication date: July 21, 2016
    Applicant: KEIO UNIVERSITY
    Inventors: Kouhei OHNISHI, Sho SAKAINO, Takahiro NOZAKI
  • Patent number: 8071289
    Abstract: A method to make libraries of hybrid polynucleotide molecules of two parental polynucleotide molecules utilizing single-stranded DNA was invented. Example of the method comprises several steps: (i) preparation of two single-stranded polynucleotide molecules comprising sequences containing one or more parts of homology and one or more parts of heterology, (ii) random or non-random fragmentation of said polynucleotides, (iii) hybridization of the fragmented molecules followed by de novo polynucleotide synthesis (i.e. polynucleotide chain elongation) on the hybridized molecules, (iv) separation of the chain elongation products (i.e. double-stranded polynucleotide molecules) into single-stranded polynucleotide molecules (denaturation) (v) hybridization of the resultant single-stranded polynucleotide molecules followed by de novo polynucleotide synthesis on the hybridized molecules, and (vi) repeating at least two further cycles of steps (iv) and (v).
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: December 6, 2011
    Assignee: Alligator Bioscience AB
    Inventors: Shigeaki Harayama, Kouhei Ohnishi, Miho Kikuchi
  • Patent number: 7672741
    Abstract: A position/force control device includes position detectors on a master 1 side and on a slave 3 side. Reaction force estimation observers 2 and 4 estimate reaction force based on outputs of the position detectors. A position control part 5 generates acceleration signals apm, aps for controlling positions on the master side and on the slave side on the basis of the position signals outputted by the position detectors. The operation force control part 6 generates acceleration signals afm, afs for controlling forces applied to the master side and to the slave side based upon the outputs from reaction force estimation observers 2 and 4. The acceleration composition part 7 composes the two sets of acceleration signals apm, aps, and afm, afs, and outputs the driving signals for the master side and the slave side.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: March 2, 2010
    Assignee: Keio University
    Inventors: Kouhei Ohnishi, Masaki Kitajima, Yasuhide Morikawa, Souji Ozawa, Toshiharu Furukawa, Toshiyuki Murakami, Kazuo Nakazawa, Wataru Iida, Tomoko Yano
  • Patent number: 7662551
    Abstract: A method to make libraries of hybrid polynucleotide molecules of two parental polynucleotide molecules utilizing single-stranded DNA was invented. Example of the method comprises several steps: (i) preparation of two single-stranded polynucleotide molecules comprising sequences containing one or more parts of homology and one or more parts of heterology, (ii) random or non-random fragmentation of said polynucleotides, (iii) hybridization of the fragmented molecules followed by de novo polynucleotide synthesis (i.e. polynucleotide chain elongation) on the hybridized molecules, (iv) separation of the chain elongation products (i.e. double-stranded polynucleotide molecules) into single-stranded polynucleotide molecules (denaturation) (v) hybridization of the resultant single-stranded polynucleotide molecules followed by de novo polynucleotide synthesis on the hybridized molecules, and (vi) repeating at least two further cycles of steps (iv) and (v).
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: February 16, 2010
    Assignee: Alligator Bioscience AB
    Inventors: Shigeaki Harayama, Kouhei Ohnishi, Miho Kikuchi
  • Publication number: 20080146461
    Abstract: A method to make libraries of hybrid polynucleotide molecules of two parental polynucleotide molecules utilizing single-stranded DNA was invented. Example of the method comprises several steps: (i) preparation of two single-stranded polynucleotide molecules comprising sequences containing one or more parts of homology and one or more parts of heterology, (ii) random or non-random fragmentation of said polynucleotides, (iii) hybridization of the fragmented molecules followed by de novo polynucleotide synthesis (i.e. polynucleotide chain elongation) on the hybridized molecules, (iv) separation of the chain elongation products (i.e. double-stranded polynucleotide molecules) into single-stranded polynucleotide molecules (denaturation) (v) hybridization of the resultant single-stranded polynucleotide molecules followed by de novo polynucleotide synthesis on the hybridized molecules, and (vi) repeating at least two further cycles of steps (iv) and (v).
    Type: Application
    Filed: February 25, 2008
    Publication date: June 19, 2008
    Inventors: Shigeaki Harayama, Kouhei Ohnishi, Miho Kikuchi
  • Publication number: 20070112466
    Abstract: This invention of the position/force control device intends to improve response performance in high frequency band and to ensure realization of a delicate work. A position detector is provided each on a master 1 side and on a slave 3 side, respectively, and reaction force estimation observers 2 and 4 estimate reaction force undergone by the operation part of the master side and reaction force undergone by the object of the slave side on the basis of outputs of the position detectors. The position control part 5 generates acceleration signals apm, aps for controlling positions on the master side and on the slave side on the basis of the position signals outputted by the position detectors of the master side and of the slave side. The operation force control part 6 generates acceleration signals afm, afs for controlling forces applied to the master side and to the slave side based upon the outputs from reaction force estimation observers 2 and 4.
    Type: Application
    Filed: July 21, 2004
    Publication date: May 17, 2007
    Inventors: Kouhei Ohnishi, Masaki Kitajima, Yasuhide Morikawa, Souji Ozawa, Toshiharu Furukawa, Toshiyuki Murakami, Kazuo Nakazawa, Wataru Iida, Tomoko Yano
  • Publication number: 20030138825
    Abstract: A method to make libraries of hybrid polynucleotide molecules of two parental polynucleotide molecules utilizing single-stranded DNA was invented. Example of the method comprises several steps: (i) preparation of two single-stranded polynucleotide molecules comprising sequences containing one or more parts of homology and one or more parts of heterology, (ii) random or non-random fragmentation of said polynucleotides, (iii) hybridization of the fragmented molecules followed by de novo polynucleotide synthesis (i.e. polynucleotide chain elongation) on the hybridized molecules, (iv) separation of the chain elongation products (i.e. double-stranded polynucleotide molecules) into single-stranded polynucleotide molecules (denaturation) (v) hybridization of the resultant single-stranded polynucleotide molecules followed by de novo polynucleotide synthesis on the hybridized molecules, and (vi) repeating at least two further cycles of steps (iv) and (v).
    Type: Application
    Filed: November 18, 2002
    Publication date: July 24, 2003
    Inventors: Shigeaki Harayama, Kouhei Ohnishi, Miho Kikuchi
  • Publication number: 20020086292
    Abstract: A method to make libraries of hybrid polynucleotide molecules of two parental polynucleotide molecules utilizing single-stranded DNA was invented. Example of the method comprises several steps: (i) preparation of two single-stranded polynucleotide molecules comprising sequences containing one or more parts of homology and one or more parts of heterology, (ii) random or non-random fragmentation of said polynucleotides, (iii) hybridization of the fragmented molecules followed by de novo polynucleotide synthesis (i.e. polynucleotide chain elongation) on the hybridized molecules, (iv) separation of the chain elongation products (i.e. double-stranded polynucleotide molecules) into single-stranded polynucleotide molecules (denaturation) (v) hybridization of the resultant single-stranded polynucleotide molecules followed by de novo polynucleotide synthesis on the hybridized molecules, and (vi) repeating at least two further cycles of steps (iv) and (v).
    Type: Application
    Filed: December 22, 2000
    Publication date: July 4, 2002
    Inventors: Shigeaki Harayama, Kouhei Ohnishi, Miho Kikuchi
  • Patent number: 4748361
    Abstract: An electric motor includes a housing, a rotor and a stator. The rotor includes a rotor shaft rotatably supported on the housing. The rotor includes a plurality of disk portions disposed on the rotor shaft coaxially therewith and spaced from each other axially of the rotor shaft. Each of the disk portions has a thickness gradually decreasing radially outwardly thereof. The stator includes a plurality of annular portions disposed on the housing coaxially with the rotor shaft and spaced from each other axially of the rotor shaft. Each of the annular portions has a thickness gradually decreasing radially inwardly thereof. The annular portions and the disk portions are loosely fitted with each other with a gap formed therebetween. Opposed side surfaces of the annular portion and disk portion are conical. Each of the annular portions has a coil disposed in each conical side surface thereof. Each of the disk portions has permanent magnets disposed at least in each conical side surface thereof.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: May 31, 1988
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Kouhei Ohnishi, Akira Mochizuki
  • Patent number: 4509003
    Abstract: In a vector control method and system for an induction motor, the decoupling calculation and 2-3 phase transformation are combined to simplify the system configuration, and the plus and minus signs of trigonometric signals are changed according to the rotational direction to enable four-quadrant operation. Further, in the case of a 3-phase induction motor driven by a PWM inverter, the number of the triangular (carrier) wave signals generated during one period of the power supply signal is increased with decreasing frequency of the supply voltage signal to improve the response characteristics when the motor is rotating at a low speed.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: April 2, 1985
    Assignee: Kabushiki Kaisha Meidensha
    Inventors: Kouhei Ohnishi, Tadashi Ashikaga, Masayuki Terashima