Patents by Inventor Hideo Murakami

Hideo Murakami 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: 8700268
    Abstract: In an inverted pendulum type vehicle having a traveling motion unit, when a component about an axis in a second direction and a component about an axis in a first direction from within a tilt error between an actual tilt angle and a desired tilt angle of the payload supporting part are defined as ?be_x_s and ?be_y_s, respectively, and when a component in the first direction and a component in the second direction from within a traveling velocity of a representative point of the vehicle in a stationary state in which ?be_x_s and ?be_y_s are retained constant are defined as Vb_x_stb and Vb_y_stb, respectively, a traveling motion of the traveling motion unit is controlled so that a ratio of a magnitude of Vb_x_stb with respect to a magnitude of ?be_x_s and a ratio of a magnitude of Vb_y_stb with respect to ?be_y_s becomes a ratio different from each other.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: April 15, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami
  • Patent number: 8678124
    Abstract: An inverted pendulum type vehicle includes a first control processor that adds up a basic velocity command in a longitudinal direction and a lateral direction based on an operation through a joystick and a desired center of gravity velocity addition amount in the longitudinal direction and the lateral direction based on the movement of the body weight of the rider, thereby determining a desired velocity. A longitudinal travel velocity command limiter sets a desired center of gravity velocity addition amount, which is based on the basic velocity command based on a longitudinal manipulated variable of the joystick and a center of gravity offset influence amount based on the movement of the body weight of the rider, to a smaller value as a basic turn angular velocity command value increases.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: March 25, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Shinya Shirokura, Hideo Murakami, Makoto Araki
  • Publication number: 20140067177
    Abstract: A controller 21 of a vehicle 1 is equipped with a first control 24, which is configured to control a first actuator 8 so as to move a traveling motion unit 3 according to tilting of an occupant mounting section 5, and a second control unit 25, which is configured to control, in a case where a turning command is output from a joystick 12, an electric motor 14 such that a steering direction of a wheel 4 viewed from above the vehicle 1 becomes tilted with respect to a direction of a moving velocity vector V of the traveling motion unit 3.
    Type: Application
    Filed: August 13, 2013
    Publication date: March 6, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Shinichiro KOBASHI, Kazushi AKIMOTO, Hideo MURAKAMI
  • Patent number: 8645030
    Abstract: Provided is a controller for an inverted pendulum type vehicle capable of moving the vehicle smoothly. The inverted pendulum type vehicle 1 is provided with a grip 18 at a upper end portion of a base body 9. A grip-acting external force F acting on the grip 18 is detected by a force sensor 55. According to the detected grip-acting external force F, a required center-of-gravity velocity generator 74 determines required center-of-gravity velocities Vb_x_aim and Vb_y_aim, and on the basis thereof, a traveling motion unit controller determines a manipulated variable for control.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: February 4, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shinichiro Kobashi, Kazushi Akimoto, Hideo Murakami, Toru Takenaka, Hiroshi Gomi
  • Publication number: 20130304320
    Abstract: An inverted pendulum type vehicle with a tiltable rider mounting section has a first travel operation unit and a second travel operation unit, which are disposed with an interval provided therebetween in the longitudinal direction and which are capable of traveling in all directions. In a situation wherein a predetermined representative point of the vehicle or the first travel operation unit is to be moved rightward or leftward, the traveling operations of the first travel operation unit and the second travel operation unit are controlled such that the travel velocity of the first travel operation unit and the travel velocity of the second travel operation unit in the lateral direction are different from each other.
    Type: Application
    Filed: February 18, 2013
    Publication date: November 14, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Toru TAKENAKA, Shinya SHIROKURA, Hideo MURAKAMI, Makoto ARAKI
  • Publication number: 20130299253
    Abstract: An inverted pendulum type vehicle includes a first control processor that adds up a basic velocity command in a longitudinal direction and a lateral direction based on an operation through a joystick and a desired center of gravity velocity addition amount in the longitudinal direction and the lateral direction based on the movement of the body weight of the rider, thereby determining a desired velocity. A longitudinal travel velocity command limiter sets a desired center of gravity velocity addition amount, which is based on the basic velocity command based on a longitudinal manipulated variable of the joystick and a center of gravity offset influence amount based on the movement of the body weight of the rider, to a smaller value as a basic turn angular velocity command value increases.
    Type: Application
    Filed: February 26, 2013
    Publication date: November 14, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Toru TAKENAKA, Shinya SHIROKURA, Hideo MURAKAMI, Makoto ARAKI
  • Publication number: 20130304316
    Abstract: An inverted pendulum type vehicle prevents a travel operation unit from running at a high velocity when not in contact with the ground. A ground contact point velocity detector integrates a ground contact point horizontal acceleration calculated by a ground contact point horizontal acceleration calculator so as to calculate the acceleration at the ground contact point of a wheel. A determiner calculates a ground contact point velocity. The determiner sets a velocity threshold value on the basis of the velocity difference between the ground contact point velocity and a first desired velocity. If the first desired velocity reaches the velocity threshold value or more, then the determiner decides that the wheel of a first travel operation unit is idling and restricts the setting of the first desired velocity by a first control processor to the velocity threshold value or less.
    Type: Application
    Filed: February 26, 2013
    Publication date: November 14, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Toru TAKENAKA, Shinya SHIROKURA, Hideo MURAKAMI, Makoto ARAKI
  • Patent number: 8583338
    Abstract: Provided is a controller of an inverted pendulum type vehicle capable of being moved smoothly by a guided subject as a support. In the inverted pendulum type vehicle 1, an upper portion of a base body 9 is fixed with a grip 18 extending vertically, and a joystick 20 is disposed at an upper end of the grip 18 and is configured to be held by a guided subject to issue commands to every direction of 360° according to thumb operations thereof. A manipulated variable of the joystick 20 is detected by a position sensor 55, a required center-of-gravity velocity generator 74 determines required center-of-gravity velocities of Vb_x_aim and Vb_y_aim according to the detected manipulated variable of the joystick 20, and on the basis thereof, a traveling motion unit controller determines a manipulated variable for control.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: November 12, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami
  • Patent number: 8583342
    Abstract: A control device of an inverted pendulum type vehicle capable of simplifying the steering of the vehicle, and of improving handling quality thereof, is provided. A control unit 50 of an inverted pendulum type vehicle sequentially determines a target-of-retaining velocity magnitude amount which is a magnitude of a desired velocity of a predetermined representative point in a predetermined period of time, or a magnitude of a component in a predetermined direction of the desired velocity, to be retained stable to a value identical to the target-of-retaining velocity magnitude amount in relation to the desired velocity determined immediately before start of the period of time, in the case where a predetermined condition is satisfied, and control the traveling motion of a traveling motion unit 5 in accordance with the determined desired velocity.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: November 12, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami
  • Patent number: 8577576
    Abstract: An inverted pendulum type vehicle includes a travelling motion unit capable of moving on a floor surface, an actuator for driving the travelling motion unit, a base body mounted with the travelling motion unit and the actuator, a tilt detector configured to detect a tilt of the base body, and a controller configured to control the actuator. The controller controls an operation of an actuator so as to restrict a representative point velocity which is a travelling velocity of a predefined representative point located above a ground contact point of the vehicle and is determined according to a travelling velocity of the travelling motion unit and a tilt of the base body.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: November 5, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Hideo Murakami
  • Patent number: 8577516
    Abstract: A control device of an inverted pendulum type vehicle capable of easily performing a circling movement of the vehicle, without requiring complex maneuvering operation. A control unit 50 of an inverted pendulum type vehicle 1 determines a desired tilt angle of a payload supporting part 3 according to a yaw rate measured value by a yaw rate sensor 53 equipped to the vehicle 1, and controls a traveling motion of a traveling motion unit 5 so as to bring an actual tilt angle close to the desired tilt angle.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: November 5, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami
  • Patent number: 8554391
    Abstract: Provided is a control device of an inverted pendulum type vehicle capable of moving the vehicle toward a desired direction easily. In the inverted pendulum type vehicle 1, one end of a cord member C is connected to a seat 3 via an engagement member 4. A tension of the cord member C is detected by a triaxial force sensor. According to the detected tension of the cord member C, a required center-of-gravity velocity generator 74 determines required center-of-gravity velocities Vb_x_aim and Vb_y_aim, and a manipulated variable for control is determined according thereto.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: October 8, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami, Yuichi Uebayashi
  • Patent number: 8548711
    Abstract: Provided is a control device of an inverted pendulum type vehicle capable of adjusting a deviation of a tilt angle of a base body from a desired tilt angle so as to maintain the vehicle in a normal state where the tilt angle matches the desired tilt angle and the vehicle is in halt. When an update condition for updating a tilt offset adjusting variable ?b_xy_offset is satisfied (STEP 21), a posture control calculator 80 performs a first mode arithmetic process (STEP 22) to update the tilt offset adjusting variable ?b_xy_offset, and meanwhile determines imaginary wheel rotational angular acceleration commands ?wdot_x_cmd and ?wdot_y_cmd via a second mode arithmetic process (STEP 23) by using the tilt offset adjusting variable ?b_xy_offset updated in the first mode arithmetic process.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: October 1, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami, Yuichi Uebayashi
  • Patent number: 8532898
    Abstract: An omnidirectional vehicle capable of enhancing straight-line stability is provided. Within a period from the instant the execution of velocity component attenuation processing for reducing continuously or stepwise the magnitude of a desired velocity vector ?Vb_aim of a predetermined representative point of a vehicle 1 having a traveling motion unit 5 capable of moving in all directions, including a first direction and a second direction, on a floor surface is started to the instant the magnitude of ?Vb_aim attenuates to zero, the orientation of ?Vb_aim is brought closer to the first direction. The first direction is defined as the fore-and-aft direction of an occupant aboard the vehicle 1, while the second direction is defined as the lateral direction of the occupant.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: September 10, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami
  • Patent number: 8527154
    Abstract: In an inverted pendulum type vehicle, a manipulated variable for control of a traveling motion unit is determined using adjustment parameters Ki_x, Ki_y (i=1, 2, 3) and ?b_x_obj, ?b_y_obj, which changes its value in accordance with whether it is in the loaded state in which an object to be transported is loaded on a loading part of the inverted pendulum type vehicle, or whether it is in the non-loaded state in which the object to be transported is not loaded thereon. The adjustment parameters are changed at a faster rate of change in the case of the transition from the loaded state to the non-loaded state, than in the case of the transition from the non-loaded state to the loaded state. The adjustment parameters for control are changed appropriately during transition while suppressing occurrence of slipping of the traveling motion unit.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: September 3, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami, Toru Takenaka
  • Patent number: 8521395
    Abstract: Provided is a control device of an inverted pendulum type mobile apparatus capable of support the body of a user on a base body with a foot of the user standing on the floor in a reclining state. If the reclining state where the user has the body supported by the base body with a foot thereof standing on the floor when the mobile apparatus 1 is in halt state is detected, a control unit 50 determines a manipulated variable for control (imaginary wheel rotational angular acceleration command) so as to drive a travelling motion unit 5 toward a direction for the base body 9 to support the body of the user.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: August 27, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami, Yuichi Uebayashi
  • Patent number: 8494746
    Abstract: A desired travelling velocity of a representative point of a vehicle 1 is set under such a condition that it does not exceed a velocity permissible range which is defined to have anisotropy according to a posture of an occupant seated on a seat 3. An operation of a travelling motion unit 5 is controlled by controlling an operation of an actuator 7 on the basis of the desired travelling velocity.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: July 23, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazushi Akimoto, Hideo Murakami, Toru Takenaka
  • Patent number: 8478490
    Abstract: A control device of an inverted pendulum type vehicle capable of controlling fluctuation of a traveling velocity of a vehicle according to operating state of the vehicle. A traveling motion unit controlling element 50 of an inverted pendulum type vehicle 1 includes a first processing mode and a second processing mode. In the first processing mode, determines a manipulated variable for control so as to bring a tilt angle of a payload supporting part 3 and a traveling velocity of a representative point of the vehicle 1 closer to a desired value. In the second processing mode, the traveling motion unit controlling element 50 determines the manipulated variable for control while making a sensitivity to change of the manipulated variable for control with respect to a measured value of the traveling velocity of the representative point to be relatively lower than that in the first processing mode.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: July 2, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Shinichiro Kobashi, Hideo Murakami, Yuichi Uebayashi
  • Patent number: 8467948
    Abstract: A vehicle target velocity calculator of an omnidirectional moving body converts a manipulated vector which is a manipulated variable of the omnidirectional moving body instructed by an operator by using an operation portion of an operation device to a manipulated vector of the omnidirectional moving body in the relative coordinate system based on an angle difference between the presence direction of the omnidirectional moving body detected by the operation device sensor unit and the presence direction of the operation device detected by the vehicle sensor unit, and determines the target moving velocity vector according to the converted manipulated vector. The wheel velocity command calculator instructs a wheel drive unit to drive the base body according to this target moving velocity vector.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: June 18, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Kazushi Akimoto, Hideo Murakami
  • Patent number: 8463523
    Abstract: An inverted pendulum type vehicle includes a loaded mode in which an object to be transported is loaded on a boarding unit, and a non-loaded state mode in which the object to be transported is not loaded thereon. When traveling velocities of a representative point of the vehicle in a steady-state, in which tilt errors ?be_x_s, ?be_y_s between actual tilt angles of a boarding unit and desired tilt angles thereof are maintained, constant are Vb_x_stb, Vb_y_stb, a traveling motion of a traveling motion unit is controlled such that at least a ratio of a magnitude of Vb_x_stb with respect to a magnitude of ?be_x_s becomes a smaller ratio in the non-loaded state mode than in the loaded state mode. Such inverted pendulum type vehicle is difficult to move in the non-loaded state mode, and is easy to move in the loaded mode.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: June 11, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazushi Akimoto, Hideo Murakami, Toru Takenaka