Patents by Inventor Souji Ozawa

Souji Ozawa 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: 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
  • 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