Patents by Inventor Susumu Oikawa
Susumu Oikawa 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).
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Publication number: 20230169866Abstract: A road stud includes a terminal storage unit, a light emission unit, a moving body detection unit, a radio communication unit, and a terminal control unit. The terminal storage unit stores preset unique fixed position information. The light emission unit emits a preset light to the surroundings. The moving body detection unit generates a detection signal indicating that a nearby moving body has been detected. The radio communication unit receives, based on fixed position information, an instruction signal for an operation of the light emission unit from a predetermined control system and transmits a detection signal to the control system. The terminal control unit controls a light emission unit based on the instruction signal.Type: ApplicationFiled: November 17, 2022Publication date: June 1, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Oikawa, Hiroyuki Nakatani, Kenichi Kitahama
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Publication number: 20230167615Abstract: In a road stud system, a road stud includes a terminal storage unit, a light emission unit, and a radio communication unit. The light emission unit emits a light having a first color tone or a second color tone in a first or second direction. The radio communication unit receives an instruction signal for an operation of the light emission unit. A control system that controls a plurality of road studs includes a determination unit and an instruction unit. The determination unit determines whether an overlapping area is in a first state in which passage of a pedestrian is prioritized or a second state in which passage of an automobile is prioritized. The instruction unit sends an instruction signal, in accordance with the result of the determination, regarding the direction of the light emission and the color tone to each of the road studs.Type: ApplicationFiled: November 17, 2022Publication date: June 1, 2023Applicant: Toyota Jidosha Kabushiki KaishaInventors: Susumu Oikawa, Hiroyuki Nakatani, Kenichi Kitahama
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Patent number: 10046796Abstract: A travelling apparatus including a controller that adds, when receiving a turning instruction, a first correction amount calculated based on rider's centroid information to a first rotation amount of a first driving wheel calculated based on the turning instruction to rotationally drive the first driving wheel and adds a second correction amount calculated based on rider's centroid information to a second rotation amount of a second driving wheel calculated based on the turning instruction to rotationally drive the second driving wheel is provided.Type: GrantFiled: March 24, 2017Date of Patent: August 14, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu Oikawa
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Publication number: 20170313350Abstract: A travelling apparatus including a controller that adds, when receiving a turning instruction, a first correction amount calculated based on rider's centroid information to a first rotation amount of a first driving wheel calculated based on the turning instruction to rotationally drive the first driving wheel and adds a second correction amount calculated based on rider's centroid information to a second rotation amount of a second driving wheel calculated based on the turning instruction to rotationally drive the second driving wheel is provided.Type: ApplicationFiled: March 24, 2017Publication date: November 2, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu OIKAWA
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Patent number: 9321498Abstract: Bias values of pitch axis and roll axis angular velocity sensors in a stationary state where a reference yaw axis of a two-wheeled inverted pendulum vehicle body is stationary in parallel with a vertical direction are acquired. Bias values of the pitch axis and roll axis angular velocity sensors in a turning state where a two-wheeled inverted pendulum vehicle is turned at a predetermined turning angular velocity in a state where the reference yaw axis of the two-wheeled inverted pendulum vehicle body remains parallel to the vertical direction are acquired. Mounting angle errors of the pitch axis and roll axis angular velocity sensors with respect to the two-wheeled inverted pendulum vehicle body are estimated on the basis of the bias values of the sensors in the stationary state, the bias values of the sensors in the turning state and the predetermined turning angular velocity.Type: GrantFiled: November 29, 2012Date of Patent: April 26, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu Oikawa
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Patent number: 9209719Abstract: Provided is a load driving device capable of efficiently recovering and using regenerative power and an inverted type movable body equipped with same. The load driving device includes a battery that supplies power to a load when driving the load, and is charged with a part of regenerative power when the regenerative power equal to or higher than a first reference value is generated by the load. The load driving device also includes an internal circuit that consumes at least a part of regenerative power when the regenerative power is generated by the load.Type: GrantFiled: October 5, 2010Date of Patent: December 8, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Oikawa, Akio Kawahara
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Patent number: 8935050Abstract: A moving body control system includes a driving velocity detector that detects a driving velocity of a driving device that drives a moving body, a posture state detecting device that detects posture information of the moving body, a posture controller that produces a first driving velocity command for the driving device, based on the posture information and an entered posture information command, a velocity command producer that produces a second driving velocity command for the driving device, by adding the first driving velocity command and the driving velocity, and a velocity controller that controls the driving device, by producing a torque command for the driving device, based on the second driving velocity command and the driving velocity. The velocity controller performs velocity control so that the driving velocity follows the second driving velocity command. The posture controller performs posture control so that the posture information follows the posture information command.Type: GrantFiled: January 29, 2014Date of Patent: January 13, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yusuke Kosaka, Susumu Oikawa
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Publication number: 20140330507Abstract: Bias values of pitch axis and roll axis angular velocity sensors in a stationary state where a reference yaw axis of a two-wheeled inverted pendulum vehicle body is stationary in parallel with a vertical direction are acquired. Bias values of the pitch axis and roll axis angular velocity sensors in a turning state where a two-wheeled inverted pendulum vehicle is turned at a predetermined turning angular velocity in a state where the reference yaw axis of the two-wheeled inverted pendulum vehicle body remains parallel to the vertical direction are acquired. Mounting angle errors of the pitch axis and roll axis angular velocity sensors with respect to the two-wheeled inverted pendulum vehicle body are estimated on the basis of the bias values of the sensors in the stationary state, the bias values of the sensors in the turning state and the predetermined turning angular velocity.Type: ApplicationFiled: November 29, 2012Publication date: November 6, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu Oikawa
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Publication number: 20140236426Abstract: A moving body control system includes a driving velocity detector that detects a driving velocity of a driving device that drives a moving body, a posture state detecting device that detects posture information of the moving body, a posture controller that produces a first driving velocity command for the driving device, based on the posture information and an entered posture information command, a velocity command producer that produces a second driving velocity command for the driving device, by adding the first driving velocity command and the driving velocity, and a velocity controller that controls the driving device, by producing a torque command for the driving device, based on the second driving velocity command and the driving velocity. The velocity controller performs velocity control so that the driving velocity follows the second driving velocity command. The posture controller performs posture control so that the posture information follows the posture information command.Type: ApplicationFiled: January 29, 2014Publication date: August 21, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke Kosaka, Susumu Oikawa
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Patent number: 8666575Abstract: An inverted two-wheel apparatus includes drive means that drives wheels; control means that generates a torque command value to control drive torque of the drive means; and posture detection means that detects posture information of a vehicle. The inverted two-wheel apparatus is able to travel while keeping an inverted state. Furthermore, the control means performs control to dismount an occupant upon judgment that the torque command value that is generated is equal to or more than a predetermined value, which means in a saturation state, and inverted control is in a failure state based on the posture information detected by the posture detection means.Type: GrantFiled: March 5, 2010Date of Patent: March 4, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yusuke Kosaka, Susumu Oikawa
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Patent number: 8577577Abstract: A vehicle includes a support member and at least one wheel attached to the support member. The support member is capable of oscillating in a front-back direction of the vehicle. The vehicle further includes a torque control unit applying torque to the wheel, and a control loop controlling the torque control unit to adjust the torque applied to the wheel to allow the vehicle to travel while keeping an inverted state of the support member. The control loop controls the torque control unit to apply normal torque and additional torque to the wheel, the normal torque determined according to a deviation between a target value and a controlled variable including at least one of an inclination angular velocity and an inclination angle of the support member in the front-back direction, the additional torque determined according to a power of a velocity parameter of the vehicle.Type: GrantFiled: August 31, 2010Date of Patent: November 5, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Susumu Oikawa, Yusuke Kosaka
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Patent number: 8543294Abstract: To provide a coaxial two-wheeled vehicle capable of performing a turning movement with stability and its control method. A coaxial two-wheeled vehicle in accordance with the present invention includes drive means to drive two coaxially-arranged wheels, turning reference-input input means to input a turning reference input, and control means to control the drive means according to a turning gain based on a turning reference-input input by the turning reference-input input means to thereby perform a turning movement. The control means preferably brings the turning gain to substantially zero when the coaxial two-wheeled vehicle is in a backward traveling state with a backward speed greater than or equal to a first speed, and sets the turning gain to a value greater than zero when a vehicle speed is substantially zero.Type: GrantFiled: May 25, 2012Date of Patent: September 24, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Susumu Oikawa
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Patent number: 8532877Abstract: To provide a coaxial two-wheeled vehicle capable of performing a turning movement with stability and its control method. A coaxial two-wheeled vehicle in accordance with the present invention includes drive means to drive two coaxially-arranged wheels, turning reference-input input means to input a turning reference input, and control means to control the drive means according to a turning gain based on a turning reference-input input by the turning reference-input input means to thereby perform a turning movement. The control means preferably brings the turning gain to substantially zero when the coaxial two-wheeled vehicle is in a backward traveling state with a backward speed greater than or equal to a first speed, and sets the turning gain to a value greater than zero when a vehicle speed is substantially zero.Type: GrantFiled: June 5, 2009Date of Patent: September 10, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Susumu Oikawa
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Publication number: 20130187576Abstract: Provided is a load driving device capable of efficiently recovering and using regenerative power and an inverted type movable body equipped with same. The load driving device includes a battery that supplies power to a load when driving the load, and is charged with a part of regenerative power when the regenerative power equal to or higher than a first reference value is generated by the load. The load driving device also includes an internal circuit that consumes at least a part of regenerative power when the regenerative power is generated by the load.Type: ApplicationFiled: October 5, 2010Publication date: July 25, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Oikawa, Aklo Kawahara
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Patent number: 8412414Abstract: To provide a coaxial two-wheeled vehicle capable of performing a turning movement with stability and its control method. A coaxial two-wheeled vehicle in accordance with the present invention includes drive means to drive two coaxially-arranged wheels, turning reference-input input means to input a turning reference input, and control means to control the drive means according to a turning gain based on a turning reference-input input by the turning reference-input input means to thereby perform a turning movement. The control means preferably brings the turning gain to substantially zero when the coaxial two-wheeled vehicle is in a backward traveling state with a backward speed greater than or equal to a first speed, and sets the turning gain to a value greater than zero when a vehicle speed is substantially zero.Type: GrantFiled: June 5, 2009Date of Patent: April 2, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Susumu Oikawa
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Publication number: 20120232757Abstract: To provide a coaxial two-wheeled vehicle capable of performing a turning movement with stability and its control method. A coaxial two-wheeled vehicle in accordance with the present invention includes drive means to drive two coaxially-arranged wheels, turning reference-input input means to input a turning reference input, and control means to control the drive means according to a turning gain based on a turning reference-input input by the turning reference-input input means to thereby perform a turning movement. The control means preferably brings the turning gain to substantially zero when the coaxial two-wheeled vehicle is in a backward traveling state with a backward speed greater than or equal to a first speed, and sets the turning gain to a value greater than zero when a vehicle speed is substantially zero.Type: ApplicationFiled: May 25, 2012Publication date: September 13, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu OIKAWA
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Patent number: 8256545Abstract: To provide a coaxial two-wheel vehicle that allows a person to easily get off the vehicle with high safety, and a method of controlling the same. A coaxial two-wheel vehicle according to the present invention includes step portions on which feet are placed, and a handle capable of operating back-and-forth movements, and said vehicle moves with a passenger riding thereon. Upon detecting that the passenger gets off the vehicle by using a getting-off switch or the like, a control device of the coaxial two-wheel vehicle performs an assist control for getting-off the vehicle by increasing an inclination angle of each of the step portions with respect to a direction in which the passenger gets off the vehicle.Type: GrantFiled: September 17, 2008Date of Patent: September 4, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventor: Susumu Oikawa
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Publication number: 20110282532Abstract: An inverted two-wheel apparatus includes drive means that drives wheels; control means that generates a torque command value to control drive torque of the drive means; and posture detection means that detects posture information of a vehicle. The inverted two-wheel apparatus is able to travel while keeping an inverted state. Furthermore, the control means performs control to dismount an occupant upon judgment that the torque command value that is generated is equal to or more than a predetermined value, which means in a saturation state, and inverted control is in a failure state based on the posture information detected by the posture detection means.Type: ApplicationFiled: March 5, 2010Publication date: November 17, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke Kosaka, Susumu Oikawa
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Publication number: 20110130925Abstract: To provide a coaxial two-wheeled vehicle capable of performing a turning movement with stability and its control method. A coaxial two-wheeled vehicle in accordance with the present invention includes drive means to drive two coaxially-arranged wheels, turning reference-input input means to input a turning reference input, and control means to control the drive means according to a turning gain based on a turning reference-input input by the turning reference-input input means to thereby perform a turning movement. The control means preferably brings the turning gain to substantially zero when the coaxial two-wheeled vehicle is in a backward traveling state with a backward speed greater than or equal to a first speed, and sets the turning gain to a value greater than zero when a vehicle speed is substantially zero.Type: ApplicationFiled: June 5, 2009Publication date: June 2, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu Oikawa
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Publication number: 20110060513Abstract: A vehicle includes a support member and at least one wheel attached to the support member. The support member is capable of oscillating in a front-back direction of the vehicle. The vehicle further includes a torque control unit applying torque to the wheel, and a control loop controlling the torque control unit to adjust the torque applied to the wheel to allow the vehicle to travel while keeping an inverted state of the support member. The control loop controls the torque control unit to apply normal torque and additional torque to the wheel, the normal torque determined according to a deviation between a target value and a controlled variable including at least one of an inclination angular velocity and an inclination angle of the support member in the front-back direction, the additional torque determined according to a power of a velocity parameter of the vehicle.Type: ApplicationFiled: August 31, 2010Publication date: March 10, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu OIKAWA, Yusuke KOSAKA