Patents by Inventor Shiyuki Sakaue

Shiyuki Sakaue 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: 5939828
    Abstract: In order to reduce the address voltage in a gas discharge type display pane, the address electrodes in the display panel are formed on the barrier ribs. Further, a fluorescent layer is coated on the wall surface of the barrier ribs thereby suppressing erroneous light emission or degradation of the fluorescent layer during address discharge.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: August 17, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Eiji Matsuzaki, Nobuyuki Ushifusa, Seiichi Tsuchida, Kazuo Suzuki, Teruo Takai, Kyoko Amemiya, Shiyuki Sakaue, Fusaji Shoji
  • Patent number: 5814959
    Abstract: A method and apparatus for controlling a robot which performs an operation on an object while applying any desired force to the object, and a method of controlling automobile suspensions so as to maintain the contact between the automobile and a road surface appropriately. A robot controller which controls the motion of an end effector includes a rotating body, using an external force applied to the effector. The controller beforehand measures the tensor of inertia of the rotating body, calculates the angular momentum of the rotating body on the basis of a sensed value output from a unit for sensing the rotational speed of the rotating body and the tensor of inertia of the rotating body, calculates a gyro-moment occurring in the rotating body on the basis of a sensed value output from a sensor for sensing the motion of the robot and the angular momentum of the rotating body, and uses as a control input value the external force from a sensor for sensing value minus the value of the gyro-moment.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: September 29, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Youichi Nonaka, Shiyuki Sakaue
  • Patent number: 5497061
    Abstract: A control system in which an end effector of a robot is mechanically compliant for a particular object. The robot has multiple degrees of freedom and movement and includes a sensor which senses a velocity nd a sensor which senses an external force. A virtual compliance control method is applied to the robot. Influence of the weight and gyro moment of the end effector is subtracted from a value obtained from a mechanism which senses the external force to set a term of the external force in a mathematic model of the control system constructed during control. By such arrangement, when a rotational body having a mechanically large rotational momentum is set as the end effector of the robot, the control system is mechanically compliant with the object.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: March 5, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Youichi Nonaka, Shiyuki Sakaue
  • Patent number: 4621332
    Abstract: Method and apparatus for controlling a robot wherein a force signal is calculated by detecting a force applied to a hand of the robot, a first value representing a difference between the force signal and a force reference is calculated, a second value representing a product of a difference between a position signal representing current position and attitude of the hand and a position reference, multiplied by a spring constant is calculated, a third value representing a product of a velocity signal representing a current velocity of the hand, multiplied by a viscosity coefficient is calculated, and a command velocity of the hand is calculated based on the first, second and third values and a mass coefficient.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: November 4, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Koichi Sugimoto, Hisaaki Hirabayashi, Shinichi Arai, Shiyuki Sakaue
  • Patent number: 4617502
    Abstract: A method and apparatus for controlling a robot hand along a predetermined path at a predetermined speed in space between two points, wherein the value of a command speed is determined on the basis of position information and velocity information on the robot hand, more particularly, on the basis of the sum of a value proportional to the positional deviation of the robot hand from the predetermined path, a value proportional to accumulated positional deviation determined during sampling operations carried out from a start point, a value proportional to the speed deviation of the robot hand from the predetermined speed within a constant-speed region, and a value proportional to accumulated speed deviation determined during sampling operations carried out from an initial sampling point within the constant-speed region.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: October 14, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Shiyuki Sakaue, Koichi Sugimoto, Shinichi Arai
  • Patent number: 4507046
    Abstract: An articulated industrial robot comprising a supporting post mounted on a base; a forearm provided at its end with a wrist having at least one degree of freedom; a pair of upper arms pivotally connected at their one ends to the supporting post and at their other ends to the forearm, the upper arms being disposed in parallel with each other at both sides of the supporting post and the forearm; an upper arm rotary driving source mounted in the supporting post; an upper arm connecting mechanism for connecting the output of the upper arm rotary driving source to the upper arm through a reduction gear; a forearm rotary driving source mounted on one of the upper arms; a forearm connecting mechanism for connecting the output of the forearm rotary driving source to the forearm through a reduction gear; a wrist posture controlling rotary driving source provided on the other upper arm or on the supporting post; and a wrist posture controlling connecting mechanism for connecting the output of the wrist posture controlli
    Type: Grant
    Filed: July 21, 1981
    Date of Patent: March 26, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Noboru Sugimoto, Yoshio Matsumoto, Michio Takahashi, Michinaga Kohno, Shiyuki Sakaue