Patents by Inventor Eiichi Ono
Eiichi Ono 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: 20100198448Abstract: A vehicle body speed estimating device. An attitude angle estimating mechanism estimates a roll angle and a pitch angle. A longitudinal speed computing mechanism computes longitudinal vehicle body speed. A vehicle body speed estimator estimates lateral vehicle body speed by using, as state amounts of vehicle motion, the longitudinal vehicle body speed and the lateral vehicle body speed, and on the basis of respective detected values of longitudinal acceleration, lateral acceleration and yaw angular velocity of vehicle motion, and respective estimated values of the roll angle and the pitch angle, and a product of a computed value of the longitudinal vehicle body speed and a value obtained from an absolute value of the detected value of the yaw angular velocity.Type: ApplicationFiled: September 9, 2008Publication date: August 5, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Eiichi Ono, Yumiko Miura, Katsuyuki Yamaguchi, Taisuke Yasutomi
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Patent number: 7747367Abstract: A vehicle physical quantity estimating device including: a longitudinal vehicle body velocity estimating unit, estimating a longitudinal vehicle body velocity based on vehicle wheel velocities of each wheel; a longitudinal/lateral acceleration state value deviation computing unit, computing deviations in longitudinal and lateral acceleration state values based on output sensor signals corresponding to detected values of the vehicle motions of triaxial accelerations and triaxial angular velocities output from a sensor, and the estimated longitudinal vehicle body velocity; a low pass filter, letting only signals corresponding to motions that need attention pass through from the longitudinal/lateral acceleration state value deviation computing unit 14; and an attitude angle estimating unit, estimating the attitude angle based on the sensor signal(s), and signal(s) representing the deviations in longitudinal and lateral acceleration state values after low pass filter processing.Type: GrantFiled: December 4, 2006Date of Patent: June 29, 2010Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventor: Eiichi Ono
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Publication number: 20100161180Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.Type: ApplicationFiled: March 5, 2010Publication date: June 24, 2010Applicants: AISIN SEIKI KABUSHIKI KAISHA, JTEKT CORPORATION, ADVICS CO., LTD.Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
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Patent number: 7699137Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.Type: GrantFiled: August 16, 2007Date of Patent: April 20, 2010Assignees: Aisin Seiki Kabushiki Kaisha, Jtekt Corporation, Advics Co., Ltd.Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
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Patent number: 7698043Abstract: A vehicle control system includes a calculator that calculates an integrated controlled variable including a first controlled variable used for controlling the braking/driving force of each wheel so as to optimize the ? utilization ratio of the wheel and a second controlled variable used for controlling the steering angle of each wheel, based on constraints including a target resultant force to be applied to the vehicle body and a limit friction circle of each wheel, a calculator that calculates a steering controlled variable used for controlling only the steering angle of each wheel so as to achieve the target resultant force, and a controller that controls only the steering angle of each wheel, or the steering angle and braking/driving force of each wheel, based on a controlled variable obtained by linearly interpolating the integrated controlled variable and the steering controlled variable.Type: GrantFiled: February 28, 2006Date of Patent: April 13, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha, Jtekt Corporation, Advics Co., Ltd.Inventors: Eiichi Ono, Yoshikazu Hattori, Yuji Muragishi
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Patent number: 7600762Abstract: A suspension control device includes a wheel grip state estimation device for estimating grip state of vehicle wheels based on variations of aligning torque of wheels to be steered, a vehicle rolling control device for controlling vehicle rolling, and a control parameter setting device for setting a control parameter of the vehicle rolling control device based on at least estimated grip state of the wheel grip state estimation device.Type: GrantFiled: September 23, 2004Date of Patent: October 13, 2009Assignees: Aisin Seiki Kabushiki Kaisha, Advices Co., Ltd., Jtekt CorporationInventors: Yoshiyuki Yasui, Hiroaki Kato, Yuji Muragishi, Eiichi Ono, Hiroaki Aizawa
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Publication number: 20090192678Abstract: A shape of a visible edge of a vehicle hood, a shape of a visible edge of a vehicle instrument panel, or a shape of a top edge of a ceramic line formed at a windshield glass is made to be a curve expressed by hyperbolic function y2=Ax2+2Bx+C, where x is a depression angle, y is an azimuth angle, A is a constant expressed by a sum of a ratio of a distance between a viewpoint height and a roll axis with respect to the viewpoint height and a reciprocal of a product of a roll rate and the viewpoint height, B is a constant expressed by a reciprocal of the roll rate, and C is a constant expressed by the constant A, the constant B and a depression angle of a sight-line direction of a driver.Type: ApplicationFiled: January 21, 2009Publication date: July 30, 2009Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Eiichi ONO, Katsuhiko FUKUI, Yasuhiro IGA, Shigeru IKETANI, Tomoaki SHIDA
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Patent number: 7567865Abstract: Various state amounts of a vehicle body detected by various types of sensors are captured (step 102). A maximum frictional force Fimax is calculated for each of wheels (steps 104 to 110). By use of the maximum frictional force Fimax and other physical quantities, a performance function not dependent on respective magnitudes of a vehicle body generating force and a yaw moment is defined, which performance function is prepared by means of a performance function in a case in which the vehicle body generating force is larger than the yaw moment, and a performance function in a case in which the vehicle body generating force is not larger than the yaw moment (step 112).Type: GrantFiled: November 12, 2004Date of Patent: July 28, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Ken Koibuchi, Eiichi Ono, Yoshikazu Hattori, Yuji Muragishi
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Patent number: 7502676Abstract: An SAT estimator 16 estimates the SAT generated between the road surface and the tire. A slip angle arithmetic unit 18 estimates the front wheel slip angle. A lateral force detector 180 computes the lateral force generated in the wheels. An SAT model value arithmetic unit 22 computes the SAT model value from the slip angle estimate and the lateral force value. A front-rear direction quantity-of-state arithmetic unit 240 computes the front-rear direction quantity of state generated in the wheels. A grip level estimator 26 estimates the grip level from the SAT estimated by the SAT estimator 16, the SAT model value computed by the SAT model value arithmetic unit 22, and the front-rear direction quantity of state estimated by the front-rear direction quantity-of-state arithmetic unit 240.Type: GrantFiled: November 25, 2005Date of Patent: March 10, 2009Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Eiichi Ono, Ken Koibuchi, Kenji Asano
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Publication number: 20090063002Abstract: A vehicle motion control device and method computes a size of a using friction circle in each of wheels by multiplying a size of an each wheel friction circle indicating a maximum generating force in each of the wheel tires by a previously computed each wheel using percentage, computes the each wheel tire generating force and the each wheel using percentage indicating a rate with respect to an upper limit value of a ?-using efficiency in each of the wheels, on the basis of a target vehicle body force and moment indicating a target vehicle body longitudinal force, a target vehicle body transverse force and a target yaw moment, and the computed size of the using friction circle, and controls a vehicle motion in such a manner that the computed each wheel tire generating force is obtained on the basis of the computed each wheel tire generating force, thereby minimizing an upper limit of the ?-using efficiency in each of the wheels.Type: ApplicationFiled: March 29, 2007Publication date: March 5, 2009Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CORPORATIONInventors: Eiichi Ono, Yoshikazu Hattori
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Publication number: 20090043428Abstract: The present invention provides an acceleration sensation evaluating device that evaluates a sensory acceleration of a driver with respect to an expectation value of acceleration, and a vehicle controller that controls a vehicle according to the evaluation results. The evaluation device detects an amount of operation of the vehicle by the driver of when the vehicle is accelerated, detects an amount of vehicle behavior, computes a physical quantity of an expectation value indicating the expectation value of an acceleration performance which the driver expects based on the detected values, computes a sensory physical quantity indicating a sensation of the acceleration which the driver senses, and computes an evaluation value of the acceleration sensation based on difference or ratio between the physical quantity of the expectation value and the sensory physical quantity.Type: ApplicationFiled: July 4, 2006Publication date: February 12, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akio Matsunaga, Yusuke Nozaki, Masanori Shimada, Eiichi Yasuda, Masahiko Mizuno, Kazukata Takei, Eiichi Ono, Noriyoshi Terazawa, Mitsuteru Kokubun
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Patent number: 7489995Abstract: An angular velocity detection device is provided for detecting an angular velocity about a single axis tilted in a longitudinal direction of a vehicle to a normal axis thereof. An actual motion state variable of the vehicle is calculated on the basis of the detected angular velocity. At least one of the braking force and driving force applied to a vehicle is controlled to stabilize a yawing motion and a rolling motion of the vehicle, on the basis of a motion state variable deviation between a desired motion state variable and the actual motion state variable, e.g., a deviation between a yaw velocity and a roll velocity of the vehicle.Type: GrantFiled: May 30, 2006Date of Patent: February 10, 2009Assignee: Advics Co., Ltd.Inventors: Yoshiyuki Yasui, Toshihisa Kato, Eiichi Ono, Yuji Muragishi, Tomoko Sugawara
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Publication number: 20090018725Abstract: A vehicle dynamics control system and a method of controlling vehicle dynamics that includes calculating a tire force to achieve target vehicle force and moment; calculating a longitudinal ? rate that a longitudinal force of each tire is normalized with the size of the tire friction circle of each wheel, representing the maximum tire force at each wheel; calculating a steering angle equalized for right and left wheels based on the longitudinal ? rate of each tire, a lateral force of each tire, and a vertical load of each tire; and controlling vehicle dynamics based on the calculated steering angle.Type: ApplicationFiled: March 30, 2007Publication date: January 15, 2009Applicant: Toyota Jidosha Kabushiki KaishaInventors: Eiichi Ono, Yoshikazu Hattori
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Patent number: 7374014Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.Type: GrantFiled: April 8, 2003Date of Patent: May 20, 2008Assignees: Aisin Seiki Kabushiki Kaisha, Jtekt Corporation, Advics Co., Ltd.Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
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Patent number: 7366598Abstract: An SAT estimating section estimates self-aligning torque (SAT) on the basis of a steering torque, which is detected by a steering torque detecting section, and an assist torque, which is detected by an assist torque detecting section. An SAT model value computing section computes an SAT model value by using an integrated slip angle ?I. An SAT ratio/drift amount computing section computes, by on-line identification, a ratio (SAT ratio) of the SAT to the SAT model value, and a drift amount of a lateral acceleration sensor.Type: GrantFiled: December 29, 2003Date of Patent: April 29, 2008Assignee: Toyota Jidosha Kabushiki KaishaInventors: Eiichi Ono, Ken Koibuchi, Kenji Asano
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Publication number: 20080097699Abstract: The invention provides a vehicle motion control device capable of realizing optimum avoidance control in the case of an emergency. The vehicle motion control device includes an external environment detection unit for detecting external environment, and a travel state detection unit for detecting a travel state of a driver's vehicle. An obstruction is detected based on the external environment detected by the external environment detection unit, and an environment map indicating obstructions is created. A control device estimates a plurality of possible avoidance actions for avoiding an obstruction based on the environment map and the travel state of the driver's vehicle detected by the travel state detection unit. The control device estimates collision damage according to each avoidance action estimated by the avoidance action estimation unit, and selects an appropriate avoidance action based on the estimated collision damage.Type: ApplicationFiled: December 28, 2005Publication date: April 24, 2008Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventor: Eiichi ONO
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Patent number: 7315777Abstract: A target resultant force to be applied to a vehicle body is calculated, the magnitude of a critical friction circle of each wheel is estimated, and a critical resultant force is estimated from the estimated magnitude of the critical friction circle. Subsequently, a ratio of the target resultant force to a critical resultant force is set as an effective road friction, and the magnitude of a tire force is set by using the magnitude of the critical friction circle and the effective road friction. The direction of the tire force of each wheel to be controlled is set based on the sum of products, which are calculated for all other wheels, of a distance from the position of the wheel to be controlled to the position of the other wheel in a direction of the resultant force, and the magnitude of the tire force of the other wheel. Cooperative control of steering and braking or steering and driving of each wheel to be controlled is performed based on the magnitude and direction of the tire force which have been set.Type: GrantFiled: January 30, 2004Date of Patent: January 1, 2008Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventor: Eiichi Ono
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Publication number: 20070294011Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.Type: ApplicationFiled: August 16, 2007Publication date: December 20, 2007Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
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Patent number: 7260458Abstract: In a steering apparatus, in accordance with a grip limit control process (30b?), it is determined whether or not a grip degree ? estimated by a grip degree estimation arithmetically operating process (30a) is less than a predetermined grip degree (??), and in the case that it is determined that an estimated grip degree (?) is less than the predetermined grip degree (??), the process applies such a feeling that a steering operation by a steering wheel suddenly becomes light to a driver, by suddenly increasing an assist quantity by a motor (M), thereby notifying the driver of the matter that the grip degree of a steered wheel is close to a limit. Therefore, it is possible to transmit to the driver a probability that a side slip is generated by further turning the steering wheel 21 in the same direction as the current direction, thereby calling the driver's attention for steering.Type: GrantFiled: May 26, 2003Date of Patent: August 21, 2007Assignees: Jtekt Corporation, Aisin Seiki Kabushiki KaishaInventors: Hiroaki Kato, Minekazu Momiyama, Shoji Ogawa, Kenji Asano, Yuzou Imoto, Yoshiyuki Yasui, Wataru Tanaka, Eiichi Ono, Yuji Muragishi
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Publication number: 20070156316Abstract: A vehicle physical quantity estimating device including: a longitudinal vehicle body velocity estimating unit, estimating a longitudinal vehicle body velocity based on vehicle wheel velocities of each wheel; a longitudinal/lateral acceleration state value deviation computing unit, computing deviations in longitudinal and lateral acceleration state values based on output sensor signals corresponding to detected values of the vehicle motions of triaxial accelerations and triaxial angular velocities output from a sensor, and the estimated longitudinal vehicle body velocity; a low pass filter, letting only signals corresponding to motions that need attention pass through from the longitudinal/lateral acceleration state value deviation computing unit 14; and an attitude angle estimating unit, estimating the attitude angle based on the sensor signal(s), and signal(s) representing the deviations in longitudinal and lateral acceleration state values after low pass filter processing.Type: ApplicationFiled: December 4, 2006Publication date: July 5, 2007Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventor: Eiichi Ono