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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Patent number: 6890643Abstract: A floor polishing composition containing a film-formable organic high molecular material as the main component, which further contains at least scaly particles.Type: GrantFiled: August 28, 2001Date of Patent: May 10, 2005Assignees: Asahi Glass Company, Limited, Dohkai Chemical Industry Co., Ltd.Inventors: Kunihiko Terase, Masaki Inoue, Atsunari Fujii, Eiichi Ono, Takayoshi Sasaki
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Publication number: 20050085986Abstract: A vehicle motion control apparatus is provided for performing a vehicle stability control on the basis of a parameter indicative of lateral margin for a tire on a road. The apparatus includes a steering control device for controlling a relationship between a steering angle and a tire angle to be varied, and a decelerating control device for controlling a vehicle speed to be decreased. The parameter indicative of lateral margin for the tire is monitored, and the steering control device and the decelerating control device are controlled on the basis of the monitored parameter.Type: ApplicationFiled: August 26, 2004Publication date: April 21, 2005Inventors: Hiroaki Aizawa, Hiroaki Niino, Minekazu Momiyama, Hiroaki Kato, Eiichi Ono, Yuji Muragishi, Yoshiyuki Yasui
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Patent number: 6879938Abstract: A tire burst predicting device which can predict occurrence of bursting of a tire and gives an alarm properly is provided. A break point frequency is estimated on the basis of time series data of wheel speed detected at a wheel speed sensor from frequency response of a first order model to which a transmission characteristic from a road surface disturbance to a wheel speed is approximated. A braking force gradient corresponding to the estimated break point frequency is estimated, on the basis of a map, which is prestored, representing a relationship between break point frequencies and braking force gradients. Extra high frequency components are eliminated from the estimated braking force gradient by a low pass filter to reduce estimation dispersion. Differentiators detect changing speed of the braking force gradient. An alarm is given when there is a possibility of bursting of tire when the detected changing speed reaches or exceeds a predetermined threshold value.Type: GrantFiled: October 12, 2001Date of Patent: April 12, 2005Assignee: Toyota Jidosha Kabushiki KaishaInventors: Katsuhiro Asano, Eiichi Ono, Takaji Umeno, Hideki Ohashi, {umlaut over (K)}azuhiro Kamiya, Yukio Mori, Toshiharu Naito
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Publication number: 20050071061Abstract: A first ECU 30 detects a steering torque applied to a steering system, estimates a self-aligning torque generated in a front wheel on the basis of the steering torque, and estimates a side force for the front wheel on the basis of lateral acceleration and a yaw rate. The first ECU 30 estimates a grip factor ? for the front wheel on the basis of a change of the self-aligning torque to the side force. The first ECU 30 judges whether the grip factor is below a second OS (oversteer) start threshold value. A second ECU 40 controls the transfer ratio according to the vehicle state when the grip factor is less than the second OS start threshold value.Type: ApplicationFiled: September 2, 2004Publication date: March 31, 2005Applicants: TOYODA KOKI KABUSHIKI KAISHA, ADVICS CO., LTD.Inventors: Hiroaki Kato, Minekazu Momiyama, Takayuki Ohta, Yoshiyuki Yasui, Yuzo Imoto, Hiroaki Aizawa, Eiichi Ono, Yuji Muragishi
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Publication number: 20050067213Abstract: 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: ApplicationFiled: September 23, 2004Publication date: March 31, 2005Applicants: Aisin Seiki Kabushiki Kaisha, Advics Co., Ltd., Toyoda Koki Kabushiki KaishaInventors: Yoshiyuki Yasui, Hiroaki Kato, Yuji Muragishi, Eiichi Ono, Hiroaki Aizawa
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Publication number: 20050049778Abstract: In vehicle roll sensing of the present invention, a self-aligning torque (SAT) estimator estimates a composite value of SATs generated on tire contact patch of right and left wheels. A slip angle computer detects a vehicle speed and a steering angle and computes a slip angle of the wheel from the measured vehicle speed and steering angle. An SAT model value computer estimates an SAT model value as a composite value of SATs of the right and left wheels when no load shifts between the right and left wheels on the basis of the slip angle. A load shift ratio estimator estimates a load shift state of the right and left wheels on the basis of the composite value of the SATs of the wheels and the SAT model value. A vehicle rollover estimator estimates a rollover of the vehicle on the basis of the estimated load-shift state.Type: ApplicationFiled: July 21, 2004Publication date: March 3, 2005Inventors: Eiichi Ono, Yuji Muragishi, Hiroaki Aizawa, Hiroaki Niino, Yoshiyuki Yasui, Minekazu Momiyama, Hiroaki Kato
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Publication number: 20050005691Abstract: A SAT estimating portion supplies a grip degree estimating portion with the estimated SAT value. A summing device sums a front wheel slip angle on which high pass filter processing has been performed and a front wheel slip angle on which low pass filter processing has been performed so as to obtain an integrated slip angle. A grip degree estimating portion estimates a grip degree of a tire, by calculating a SAT reference value which is based on the integrated slip angle, and calculating a ratio between the SAT reference value and the estimated SAT value. A road surface ? value estimating portion estimates a road surface ? value when the grip degree becomes equal to or lower than a reference value.Type: ApplicationFiled: July 25, 2003Publication date: January 13, 2005Applicant: Toyota Jidosha Kabushiki KaishaInventors: Eiichi Ono, Shoji Inagaki
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Patent number: 6807448Abstract: An instruction value Duty for bringing a slip rotation speed Nslip to a target rotation speed is feedback-controlled based on a difference e between the slip rotation speed Nslip and the target rotation speed, and a weight &thgr; from a parameter map. Weights &thgr; are assigned individually to a plurality of models, each of which includes a group of parameters and which are used to form a control model that represents a slip control system. Based on a weight that is assigned to one of the plurality of models, a weight that is assigned to at least one model that is other than the one of the plurality of models is specified. Thus, the amount of calculation required can be reduced by estimating weights for the models including the groups of parameters, which contain parameters that are used to construct the control model, instead of directly estimating the control model-constructing parameters.Type: GrantFiled: June 16, 2000Date of Patent: October 19, 2004Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toshinari Suzuki, Katsumi Kono, Ryoichi Hibino, Masataka Osawa, Eiichi Ono, Shu Asami
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Patent number: 6802226Abstract: A physical amount estimating apparatus including first outputting means for outputting a first physical amount that does not include a hysteresis characteristic, second outputting means for outputting a second physical amount that has a predetermined physical relationship to the first physical amount and includes a hysteresis characteristic, hysteresis removing means for calculating a corrected value with the hysteresis characteristic removed therefrom based on the second physical amount, and estimating means for estimating a third physical amount based on a physical relationship between the first physical amount and the corrected value.Type: GrantFiled: July 12, 2002Date of Patent: October 12, 2004Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Eiichi Ono, Yoshitoshi Watanabe, Masanori Miyashita, Yuji Muragishi, Katsuhiro Asano
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Publication number: 20040186647Abstract: 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: ApplicationFiled: January 30, 2004Publication date: September 23, 2004Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventor: Eiichi Ono
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Publication number: 20040186649Abstract: 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 &agr;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: ApplicationFiled: December 29, 2003Publication date: September 23, 2004Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Eiichi Ono, Ken Koibuchi, Kenji Asano
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Patent number: 6789008Abstract: A vehicle control device incorporating an electric power steering is provided, wherein an extraordinary yaw motion acting on a vehicle is detected and is suppressed or moderated, so that the stability of the vehicle in a straight-ahead steering is improved. The causes of the extraordinary yaw motion are one of lateral wind, asymmetrical surface state of the road, lateral slant of the road and the like. A countermeasure against the extraordinary yaw motion is taken by applying a counter (opposite direction) yaw motion on the vehicle or switching over the control mode from a proportional control to a proportional integral control.Type: GrantFiled: March 28, 2003Date of Patent: September 7, 2004Assignees: Toyoda Koki Kabushiki Kaisha, Advics Co., Ltd.Inventors: Hiroaki Kato, Minekazu Momiyama, Yoshiyuki Yasui, Wataru Tanaka, Kenji Asano, Eiichi Ono, Yuji Muragishi
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Publication number: 20040148077Abstract: The present invention is directed to a road condition estimation apparatus for estimating a road condition for use in a vehicle having a steering control unit for actuating a device mechanically independent of a manually operated steering member to steer at least a wheel of front and rear wheels. The apparatus includes an actuating signal detection unit for detecting an actuating signal for actuating the device of the steering control unit, an aligning torque estimation unit for estimating an aligning torque produced on the wheel on the basis of the actuating signal detected by the actuating signal detection unit, and a vehicle state variable detection unit for detecting a state variable of the vehicle.Type: ApplicationFiled: October 10, 2003Publication date: July 29, 2004Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYODA KOKI KABUSHIKI KAISHA, ADVICS CO., LTD.Inventors: Yoshiyuki Yasui, Eiichi Ono, Yuji Muragishi, Shinji Takeuchi, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
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Patent number: 6764539Abstract: A process for producing a hardenable composition with high storage stability containing scaly silica particles which consist essentially of foliar secondary silica particles and have a laminated structure, said process comprising: (1) a step of subjecting a silica sol, a silica hydrogel or hydrous silicic acid to hydrothermal treatment in the presence of an alkali metal salt to form tertiary agglomerated particles of the scaly silica in the form of porous three-dimensional disorderly agglomerates of foliar secondary silica particles, each secondary particle being formed by a parallel face-to-face alignment of a plurality of flaky primary particles which are overlaid one on another, and (2) a step of disintegrating and dispersing the tertiary agglomerated particles of silica in an organic polymer in the form of an aqueous emulsion by a wet method.Type: GrantFiled: March 19, 2002Date of Patent: July 20, 2004Assignees: Asahi Glass Company, Limited, Dohkai Chemical Industry Co., Ltd.Inventors: Kunihiko Terase, Masaki Inoue, Atsunari Fujii, Eiichi Ono, Takayoshi Sasaki
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Publication number: 20040133324Abstract: The present invention is directed to a road condition estimation apparatus for estimating a road condition for use in a vehicle having steering control unit for actuating a device mechanically independent of a manually operated steering member to steer each wheel.Type: ApplicationFiled: October 10, 2003Publication date: July 8, 2004Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYODA KOKI KABUSHIKI KAISHA, ADVICS CO., LTD.Inventors: Yoshiyuki Yasui, Eiichi Ono, Yuji Muragishi, Shinji Takeuchi, Minekazu Momiyama, Hiroaki Kato, Yuzo Imoto, Hiroaki Aizawa
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Publication number: 20040133330Abstract: A SAT estimating portion obtains an estimated SAT value based on a sum of steering torque and assist torque. A SAT model value calculating portion calculates a SAT model value based on a slip angle. A SAT ratio calculating portion calculates a ratio between the estimated SAT value and the SAT model value. A SAT reference value calculating portion determines that a contact length between a tire and a road surface increases due to an increase in a load of a vehicle or a reduction in a tire pressure, and a SAT inclination increases, and obtains a SAT reference value by upwardly adjusting the SAT model value when a maximum value of the SAT ratio exceeds a threshold value in a predetermined time.Type: ApplicationFiled: July 25, 2003Publication date: July 8, 2004Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Eiichi Ono, Shoji Inagaki
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Publication number: 20040019417Abstract: The present invention is directed to a wheel grip factor estimation apparatus, which includes a steering factor detection unit for detecting at least one of steering factors including a steering torque and steering effort applied to a steering system extending from a steering wheel to a suspension of a vehicle, an aligning torque estimation unit for estimating an aligning torque produced on at least a wheel of the vehicle on the basis of the steering factor detected by the steering factor detection unit, and a vehicle state variable detection unit for detecting a state variable of the vehicle. The apparatus further includes a wheel factor estimation unit for estimating at least one of wheel factors including a side force and slip angle applied to the wheel on the basis of the vehicle state variable, and a grip factor estimation unit for estimating a grip factor of at least a tire of the wheel, in accordance with a relationship between the estimated alignment torque and the estimated wheel factor.Type: ApplicationFiled: April 23, 2003Publication date: January 29, 2004Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYODA KOKI KABUSHIKI KAISHA, ADVICS CO., LTD.Inventors: Yoshiyuki Yasui, Wataru Tanaka, Eiichi Ono, Yuji Muragishi, Katsuhiro Asano, Minekazu Momiyama, Syoji Ogawa, Kenji Asano, Yuzo Imoto, Hiroaki Kato
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Publication number: 20040016594Abstract: The present invention is directed to a vehicle motion control apparatus, which includes a steering factor detection unit for detecting at least one of steering factors including a steering torque and steering effort applied to a steering system, an aligning torque estimation unit for estimating an aligning torque produced on at least a wheel of the vehicle on the basis of the steering factor, a vehicle state variable detection unit for detecting a state variable of the vehicle, a wheel factor estimation unit for estimating at least one of wheel factors including a side force and slip angle applied to the wheel on the basis of the vehicle state variable, and a grip factor estimation unit for estimating a grip factor of at least a tire of the wheel, in accordance with the estimated alignment torque and the estimated wheel factor.Type: ApplicationFiled: April 23, 2003Publication date: January 29, 2004Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYODA KOKI KABUSHIKI KAISHA, ADVICS CO., LTDInventors: Yoshiyuki Yasui, Wataru Tanaka, Eiichi Ono, Yuji Muragishi, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano, Yuzo Imoto
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Publication number: 20040015312Abstract: A tire burst predicting device which can predict occurrence of bursting of a tire and gives an alarm properly is provided.Type: ApplicationFiled: April 14, 2003Publication date: January 22, 2004Inventors: Katsuhiro Asano, Eiichi Ono, Takaji Umeno, Hideki Ohashi, Kazuhiro Kamiya, Yukio Mori, Toshiharu Naito
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Patent number: 6668637Abstract: Tire air pressure during high speed travel is estimated without a sensor for detecting the tire air pressure directly. An apparatus is constituted by a wheel speed sensor, road surface friction state estimator for estimating a friction state estimation value representing friction between the tire and a road surface from wheel speed detected by the wheel speed sensor, tire air pressure estimator for estimating any reduction in the tire air pressure based on the friction state estimation value, and a display for displaying the estimated reduction in the tire air pressure.Type: GrantFiled: September 28, 2001Date of Patent: December 30, 2003Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Eiichi Ono, Katsuhiro Asano, Takaji Umeno