Patents by Inventor Toshihisa Kato
Toshihisa Kato 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: 10155521Abstract: This vehicle control device is provided with: a control unit for executing one-pedal control, that is, the control for accelerating a vehicle when a single pedal is depressed from a predetermined reference point of a pedal stroke, and for decelerating the vehicle when the pedal is released from the reference point; and a determination unit for determining whether or not a rate of change in a pedal operation amount when the pedal is released is equal to or greater than a first threshold value. The control unit performs control for increasing a braking force when the rate of change is equal to or greater than the first threshold value.Type: GrantFiled: January 29, 2016Date of Patent: December 18, 2018Assignee: ADVICS CO., LTD.Inventors: Yusuke Takeya, Toshihisa Kato
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Publication number: 20170361851Abstract: This vehicle control device is provided with: a control unit for executing one-pedal control, that is, the control for accelerating a vehicle when a single pedal is depressed from a predetermined reference point of a pedal stroke, and for decelerating the vehicle when the pedal is released from the reference point; and a determination unit for determining whether or not a rate of change in a pedal operation amount when the pedal is released is equal to or greater than a first threshold value. The control unit performs control for increasing a braking force when the rate of change is equal to or greater than the first threshold value.Type: ApplicationFiled: January 29, 2016Publication date: December 21, 2017Applicant: ADVICS CO., LTD.Inventors: Yusuke TAKEYA, Toshihisa KATO
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Patent number: 9487196Abstract: A motion control device for a vehicle, including a braking means for applying a brake torque to a wheel of the vehicle and maintaining a traveling stability of the vehicle by controlling the braking means, the motion control device for the vehicle, includes a steering angular velocity obtaining means for obtaining a steering angular velocity of the vehicle, a yaw angular acceleration obtaining means for obtaining a yaw angular acceleration of the vehicle, and a control means for controlling the brake torque on the basis of the steering angular velocity and the yaw angular acceleration.Type: GrantFiled: January 16, 2014Date of Patent: November 8, 2016Assignee: Advics Co., Ltd.Inventors: Yoshiyuki Yasui, Toshihisa Kato, Toshio Yasutake, Atsushi Ikematsu
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Patent number: 9056600Abstract: A motion control device for a vehicle having a braking means for applying a brake toque to a wheel of the vehicle and maintaining a traveling stability of the vehicle by controlling the braking means, the motion control for the vehicle, includes a steering angular velocity obtaining means for obtaining a steering angular velocity of the vehicle, a maximum steering angular velocity calculating means for calculating a maximum steering angular velocity on the basis of the steering angular velocity, a determining means for determining a reference turning state quantity on the basis of the maximum steering angular velocity, an actual turning state quantity obtaining means for obtaining an actual turning state quantity of the vehicle, and a control means for controlling the brake toque on the basis of the reference turning state quantity and the actual turning state quantity.Type: GrantFiled: March 23, 2010Date of Patent: June 16, 2015Assignee: ADVICS CO., LTD.Inventors: Yoshiyuki Yasui, Toshihisa Kato, Hiroshi Matsuoka, Junya Nagaya
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Patent number: 9031759Abstract: To improve vehicle stability by starting control based on quicker detection of the possibility that a vehicle state will reach an unstable region. It is detected that a vehicle is in a pre-skid state that is the state prior to when the vehicle reaches an unstable region where skid occurs, and brake force is generated in a rear wheel at an outside of a turn when the pre-skid state is detected. As a result of generating this brake force, load applied to the wheels at the outside of the turn increases and lateral force of the vehicle increases. Thus, it is possible to make it more difficult for skid of the vehicle to occur, and so it is possible to inhibit, in advance, gentle deterioration in vehicle behavior such as slow spin. Accordingly, the possibility that a vehicle state has reached an unstable region can be detected earlier.Type: GrantFiled: September 9, 2010Date of Patent: May 12, 2015Assignee: Advics Co., Ltd.Inventors: Junya Nagaya, Toshihisa Kato
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Patent number: 8892325Abstract: If an actual lateral acceleration is equal to or greater than a target lateral acceleration Gth and at least one of a steering angle lateral acceleration Gys and a yaw-rate lateral acceleration Gyy is less than the target lateral acceleration Gth, the increase of the W/C pressure of the vehicle to be controlled is inhibited. Accordingly, it is possible to suppress the increase in the roll angle by actively generating the understeering to suppress rolling and to early suppress an increase in understeering if the increase in understeering is made to be unnecessary.Type: GrantFiled: March 30, 2011Date of Patent: November 18, 2014Assignee: Advics Co., Ltd.Inventors: Hideaki Koto, Toshihisa Kato
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Patent number: 8892305Abstract: A motion control device for a vehicle, including a braking means for applying a brake torque to a wheel of the vehicle and maintaining a traveling stability of the vehicle by controlling the braking means, the motion control device for the vehicle, includes a steering angular velocity obtaining means for obtaining a steering angular velocity of the vehicle, a yaw angular acceleration obtaining means for obtaining a yaw angular acceleration of the vehicle, and a control means for controlling the brake torque on the basis of the steering angular velocity and the yaw angular acceleration.Type: GrantFiled: March 24, 2010Date of Patent: November 18, 2014Assignee: Advics Co., Ltd.Inventors: Yoshiyuki Yasui, Toshihisa Kato, Toshio Yasutake, Atsushi Ikematsu
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Publication number: 20140136070Abstract: A motion control device for a vehicle, including a braking means for applying a brake torque to a wheel of the vehicle and maintaining a traveling stability of the vehicle by controlling the braking means, the motion control device for the vehicle, includes a steering angular velocity obtaining means for obtaining a steering angular velocity of the vehicle, a yaw angular acceleration obtaining means for obtaining a yaw angular acceleration of the vehicle, and a control means for controlling the brake torque on the basis of the steering angular velocity and the yaw angular acceleration.Type: ApplicationFiled: January 16, 2014Publication date: May 15, 2014Applicant: ADVICS CO., LTD.Inventors: Yoshiyuki Yasui, Toshihisa Kato, Toshio Yasutake, Atsushi Ikematsu
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Patent number: 8712662Abstract: The vehicle motion control device performs anti-lateral overturn control for increasing a brake force to be generated at a front inside wheel of a vehicle in order to cause skidding at the front inside wheel when a condition for increasing a brake force to be generated at an outside wheel is satisfied, wherein the condition is that the vehicle motion control device is in the anti-lateral overturn mode and the vehicle is turning.Type: GrantFiled: June 24, 2010Date of Patent: April 29, 2014Assignee: Advics Co., Ltd.Inventor: Toshihisa Kato
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Patent number: 8589050Abstract: A vehicle motion control device obtains an actual slip ratio and a physical quantity representing a state of motion of the vehicle in a direction of lateral overturn. The device is in an anti-lateral overturn mode when the physical quantity is larger than or equal to a motion state threshold. The device obtains an increase gradient and determines whether or not the increase gradient is larger than or equal to a predetermined increase gradient threshold, wherein the increase gradient is a ratio of an increase amount of the physical quantity to a decrease amount of the actual slip ratio. The device decreases, when the device is in the anti-lateral overturn mode and the increase gradient is larger than or equal to the increase gradient threshold, a speed of depressurization of a wheel cylinder pressure.Type: GrantFiled: June 24, 2010Date of Patent: November 19, 2013Assignee: Advics Co., Ltd.Inventor: Toshihisa Kato
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Patent number: 8554414Abstract: A rollover suppression control apparatus and method are provided. The apparatus includes a rollover state value detection unit which detects a rollover state value indicating that a vehicle is under rollover tendency, a braking force applying unit which performs a rollover suppression control of applying braking force to a wheel of the vehicle to suppress the rollover thereof when the detected rollover state value is greater than the control threshold value, a understeer state detection unit which detects whether a traveling state of the vehicle is a understeer state or a non-understeer state, and a setting unit which sets a first control threshold value as the control threshold value when the traveling state is detected as the non-understeer state, and which sets a second control threshold value greater than the first control threshold value as the control threshold value when the traveling state is detected as the understeer state.Type: GrantFiled: September 8, 2011Date of Patent: October 8, 2013Assignee: Advics Co., Ltd.Inventors: Hideaki Koto, Toshihisa Kato
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Patent number: 8444230Abstract: A vehicle motion control apparatus includes hydraulic pressure applying means for applying hydraulic pressure to a wheel cylinder side of any of plural solenoid valves, respectively arranged between a master cylinder and plural wheel cylinders, for the corresponding wheel cylinders even when an operator of the vehicle does not operate a brake operation member, motor controlling means for controlling an output of the electric motor to be reduced in accordance with a condition of a road surface when the hydraulic pressure is applied to the wheel cylinder, and valve controlling means for controlling the operation of the solenoid valve to increase an amount of the brake fluid flown by the operation of the solenoid valve before the output of the electric motor is reduced when the output of the electric motor is controlled to be reduced.Type: GrantFiled: February 5, 2008Date of Patent: May 21, 2013Assignee: Advics Co., Ltd.Inventors: Atsushi Ikematsu, Toshihisa Kato
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Patent number: 8321089Abstract: The vehicle motion control device obtains a physical quantity representing a state of a motion of a vehicle in a direction of a lateral overturn. When the obtained physical quantity is larger than or equal to a motion state threshold and the vehicle motion control device is thereby in an anti-lateral overturn, the vehicle motion control device determines the target slip ratio at a present calculation period based on a largest value of the slip ratio corresponding, according to the predetermined relation between the physical quantity and the slip ratio, to the physical quantity obtained during a time range between the present calculation period and a past time instance when the vehicle motion control device enters the anti-lateral overturn mode.Type: GrantFiled: June 24, 2010Date of Patent: November 27, 2012Assignee: Advics Co., Ltd.Inventor: Toshihisa Kato
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Patent number: 8239097Abstract: A steering control apparatus for a vehicle having a power source for generating power, and drive shafts for transferring the power to driving wheels of the vehicle, and a traction control device for controlling braking torque applied to the wheels. The apparatus comprises a detection device for detecting the braking torque applied to the wheels, a calculation device for calculating a driving force difference between the wheels, on the basis of the detected braking torque, a power source state detection device for detecting an actuating state of the power source, and a control device for controlling steering torque created by the steering wheel, and applying torque steer reducing torque to the steering wheel. A desired value of the torque steer reducing torque is determined, based on the driving force difference and the actuating state of the power source.Type: GrantFiled: July 16, 2008Date of Patent: August 7, 2012Assignee: Advics Co., Ltd.Inventors: Yoshiyuki Yasui, Hiroyuki Kodama, Kenji Asano, Toshihisa Kato
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Patent number: 8224526Abstract: A vehicle stabilization control device includes: an actual turning state quantity acquisition unit that acquires an actual turning state quantity indicating an actual turning state of a vehicle; a curve information acquisition unit that acquires the shape of a curve ahead of the vehicle; a vehicle speed acquisition unit that acquires speed of the vehicle; and a curve traverse possibility determination unit that determines a possibility that the vehicle can stably traverse the curve, based on the curve shape and speed of the vehicle; a control quantity computation unit that, to control braking force on each wheel and suppress understeering, computes a target control quantity for each wheel, based on the actual turning state quantity and on the possibility that the vehicle can stably traverse the curve; and a control unit controlling the braking force for each wheel, based on the target control quantity for each wheel.Type: GrantFiled: September 30, 2009Date of Patent: July 17, 2012Assignee: Aisin AW Co., Ltd.Inventors: Takayuki Miyajima, Yoshiyuki Yasui, Toshihisa Kato
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Publication number: 20120173111Abstract: To improve vehicle stability by starting control based on quicker detection of the possibility that a vehicle state will reach an unstable region. It is detected that a vehicle is in a pre-skid state that is the state prior to when the vehicle reaches an unstable region where skid occurs, and brake force is generated in a rear wheel at an outside of a turn when the pre-skid state is detected. As a result of generating this brake force, load applied to the wheels at the outside of the turn increases and lateral force of the vehicle increases. Thus, it is possible to make it more difficult for skid of the vehicle to occur, and so it is possible to inhibit, in advance, gentle deterioration in vehicle behavior such as slow spin. Accordingly, the possibility that a vehicle state has reached an unstable region can be detected earlier.Type: ApplicationFiled: September 9, 2010Publication date: July 5, 2012Applicant: ADVICS CO., LTD.Inventors: Junya Nagaya, Toshihisa Kato
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Patent number: 8165756Abstract: A vehicle steering control device includes a yawing value obtaining unit which obtains a yawing value corresponding to a vehicle yawing motion, a stabilizing force calculating unit which calculates a stabilizing force for assisting an operation of a steering operation member, operated by a driver for steering a steered wheel of the vehicle, in a direction opposite a direction of the vehicle yawing motion, based on the yawing value, and a force applying unit which applies the stabilizing force to the steering operation member in the direction opposite the yawing motion direction, wherein the stabilizing force calculating unit includes a counter-steer value calculating unit which calculates a counter-steer value indicating a degree of steering the steered wheel in the direction opposite the yawing motion direction, and wherein the stabilizing force is adjusted based on the counter-steer value.Type: GrantFiled: March 18, 2009Date of Patent: April 24, 2012Assignee: Advics Co., Ltd.Inventors: Yoshiyuki Yasui, Toshihisa Kato, Junya Nagaya
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Patent number: 8155855Abstract: A vehicle motion control apparatus includes a motion controlling process operating a pump for supplying brake fluid between a pressure difference control valve and a pressure increasing control valve and controlling the pressure difference control valve and the pressure increasing control valve, thereby pressurizing the wheel cylinder of the wheel to be controlled, a control amount adjusting process reducing a control amount of a motor when a frictional coefficient of a road surface is small, a load judging process judging a load condition of the motor when determining to reduce the control amount of the motor, and a pressure difference controlling process reducing the pressure difference when the load of the motor is in a high load condition.Type: GrantFiled: January 30, 2008Date of Patent: April 10, 2012Assignee: Advics Co., Ltd.Inventors: Toshihisa Kato, Atsushi Ikematsu
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Publication number: 20120065859Abstract: A rollover suppression control apparatus and method are provided. The apparatus includes a rollover state value detection unit which detects a rollover state value indicating that a vehicle is under rollover tendency, a braking force applying unit which performs a rollover suppression control of applying braking force to a wheel of the vehicle to suppress the rollover thereof when the detected rollover state value is greater than the control threshold value, a understeer state detection unit which detects whether a traveling state of the vehicle is a understeer state or a non-understeer state, and a setting unit which sets a first control threshold value as the control threshold value when the traveling state is detected as the non-understeer state, and which sets a second control threshold value greater than the first control threshold value as the control threshold value when the traveling state is detected as the understeer state.Type: ApplicationFiled: September 8, 2011Publication date: March 15, 2012Applicant: ADVICS CO., LTD.Inventors: Hideaki KOTO, Toshihisa Kato
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Publication number: 20110246017Abstract: If an actual lateral acceleration is equal to or greater than a target lateral acceleration Gth and at least one of a steering angle lateral acceleration Gys and a yaw-rate lateral acceleration Gyy is less than the target lateral acceleration Gth, the increase of the W/C pressure of the vehicle to be controlled is inhibited. Accordingly, it is possible to suppress the increase in the roll angle by actively generating the understeering to suppress rolling and to early suppress an increase in understeering if the increase in understeering is made to be unnecessary.Type: ApplicationFiled: March 30, 2011Publication date: October 6, 2011Applicant: ADVICS CO., LTD.Inventors: Hideaki Koto, Toshihisa Kato