Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Aisin Seiki Kabushiki Kaisha

Shoji Inagaki

Yasuhiro Nakai

Hideki Takamatsu

Kenji Kawahara

Shirou Monzaki

Kenji Tozu

Takayuki Itoh

Mizuho Sugiyama

Yoshitaka Oikawa

Norio Yamazaki

Noriaki Hattori

Jun Mihara

Masaki Yamamoto

Shingo Sugiura

Hiroaki Tanaka

Takashi Kondo

Eiichi Ono

Kenji Asano

Hiroshi Kawaguchi

Wataru Ike

Goro Asai

Tomoaki Iida

Yoshiki Fukada

Kunihiro Sugihara

Yoshikazu Hattori

Shinichi Tagawa

Akio Okada

Kouichi Kokubo

Kouichi Hara

Naoki Okada

Tetsuji Muto

An image display apparatus has: an imaging device (L,R) that is placed at a door (L,R) of a vehicle () and that is configured to image an external circumstance of the vehicle; a displaying device () that is configured to display an external image captured by the imaging device; and a controlling device () that is configured to control an display aspect of the display when the display displays the external image, the controlling device is configured to control the display aspect such that the display aspect when the door is in an opened state is different from the display aspect when the door is in a closed state.

Image display apparatus

In a vehicle control device which performs braking control of a vehicle, a priority setting unit determines, when a possibility that a self-vehicle and another vehicle cross each other at an intersection in front of the self-vehicle is detected, a priority for each of the self-vehicle and the other vehicle with respect to access to the intersection. A braking control unit performs, when the self-vehicle has no priority over the other vehicle with respect to access to the intersection, the braking control of the self-vehicle so that the self-vehicle enters the intersection after the other vehicle passes through the intersection.

Vehicle control device

A vehicle has a drive control ECU that controls an internal combustion engine or a transmission on the basis of a target drive force. The drive control ECU has a first arbitrator that sets the target drive force on the basis of a driver's request and the like, and filters that have individually different damping characteristics and that correct the target drive force from the first arbitrator so that the vibration of a sprung weight of the vehicle is controlled, as well as a switch that includes a switching portion and a filter setting portion. The filter setting portion determines whether a pitching resonance frequency has changed. If having determined that the pitching resonance frequency has changed, the filter setting portion switches the filter having been used for correcting the target drive force to a filter corresponding to a post-change pitching resonance frequency.

Vehicle control apparatus and vehicle control method

A controller controls braking force and driving force of a vehicle, in accordance with demand force. The controller includes a first and second demand force arithmetic units for arithmetically calculating first and second demand force. The first demand force includes a factor inducing vibration in suspended components of the vehicle. The second demand force substantially excludes the factor inducing vibration in suspended components of the vehicle. A vibration damping filter reduces the factor from a waveform of the first demand force, thereby producing post-filter demand force. An arbitration unit compares the post-filter demand force with the second demand force, thereby selecting one of the post-filter demand force and second demand force as final demand force.

Controller for operation of vehicle and control method for the same

A powertrain control ECU sets a target driving force, and controls an internal combustion engine and a transmission of a vehicle. A first processor of the powertrain control ECU includes a driving force adjustment portion, a filter, a mode-switch, an environmental information-obtaining device, and a steering sensor. The driving force adjustment portion sets the target driving force based on at least one of instructions from a driver and from a second processor. The filter corrects the target driving force to suppress vibration on a spring of the vehicle. The mode-switch sets the running mode. The environmental information-obtaining device obtains information on the environment around the vehicle. The steering angle sensor determines the running condition. A correction amount, by which the filter corrects the target driving force, is adjusted according to the running mode, the environment, and the running condition.

Vehicle control apparatus and method of suppressing vibration of vehicle

In an automobile of the invention, a cornering drag estimatorestimates a cornering drag from measurements of steering angle &#x3b8; and vehicle speed V. A gain multipliermultiplies the estimated cornering drag by a preset gain K to reduce the estimated cornering drag. A phase adjusteradjusts the phase of the rest of the estimated and reduced cornering drag. An implementation systemreceives the sum of the output of the gain multiplierand the output of the phase adjusterand regulates the throttle opening of an engine according to the received sum. This adjusts the phase and the degree of reduction of the estimated cornering drag. This arrangement of the invention attains the adequate levels of pitching and rolling, which may be caused in the vehicle in the turning state.

Automobile and control method of automobile

For setting a predetermined target control amount concerning running of a vehicle according to an operation amount for a predetermined operation member for running the vehicle, an operation amount obtaining part obtaining the operation amount for the operation member; a trouble determining part determining whether or not a trouble occurs in any one of the operation member and the operation amount obtaining part; a target control amount setting part setting a trouble occasion target control amount which is a target control amount for a trouble occasion when the trouble determining part determines that a trouble occurs in at least any one of the operation member and the operation amount obtaining part; and a correcting part correcting the trouble occasion target control amount set by the trouble occasion target control amount setting part in such a manner that on-spring vibration of the vehicle is damped, are provided.

Vehicle control apparatus and throttle trouble handling method

A vehicle control apparatus for controlling a vehicle in response to a target control value includes a first setting unit configured to set a first target control value in response to a driver's request, a correction unit configured to correct the first target control value set by the first setting unit such as to suppress over-spring vibration of the vehicle, a second setting unit configured to set a second target control value in response to conditions different from a driver's request, and an arbitration unit configured to arbitrate between the first target control value and the second target control value, wherein if the second setting unit sets the second target control value, the correction unit is prevented from correcting the first target control value, and the arbitration unit arbitrates between the first target control value not corrected by the correction unit and the second target control value.

Vehicle control apparatus and vehicle vibration suppression method

In a vehicle behavior control system, a target braking force applied to each wheel of the vehicle is obtained based on a master cylinder pressure so as to be proportional to a vertical load of each wheel. When it is determined that a braking force is applied to the vehicle running on a road with uneven friction coefficient, an excess yaw moment caused by the difference between the target braking force and an actual braking force is calculated. A steering angle is corrected with a correcting steering angle estimated based on the excess yaw moment. A yaw rate difference is calculated as a difference between a normal yaw rate and an actual yaw rate of the vehicle based on the steering angle that has been corrected. It is determined whether the vehicle behavior is deteriorated based on the yaw rate difference. The vehicle behavior is then controlled to reduce the yaw rate difference.

Behavior control system for vehicle

In a vehicular brake force control apparatus, an engine brake force Feb is calculated; a road surface friction coefficient &#x3bc; and a rear wheel degree of grip &#x3b5;r is calculated; and a threshold value Ke is calculated such that the threshold value Ke increases as the road surface friction coefficient &#x3bc; becomes smaller. When the rear wheel degree of grip &#x3b5;r is smaller than the threshold value Ke, it is determined that vehicle behavior of a vehicle is liable to become unstable when the engine brake force Feb acts. In this case, a sum of the engine brake force Feb and a target friction brake force Fbv based upon a steering operation amount of a driver is distributed to each wheel in accordance with a distribution that stabilizes the vehicle behavior of the vehicle. Based on this distribution result, a friction brake force and an output torque of the engine are controlled.

Vehicular brake force control apparatus and method

A vehicular motion control apparatus uses a steering angle detected by a steering angle sensor capable of detecting an absolute rotational angle. This control apparatus has a yaw rate sensor. If a reference rotational position of the steering angle sensor has not been determined, the control apparatus calculates a plurality of target yaw rates on the basis of a plurality of steering angles estimated from a steering angle detected by the steering angle sensor, and controls motion of a vehicle on the basis of the minimum one of differences between the target yaw rates and an actual yaw rate. The control apparatus determines a reference rotational position of the steering angle sensor on the basis of a steering angle corresponding to the minimum one of the differences, and then calculates a steering angle for motion control on the basis of the detected steering angle and the determined reference rotational position.

Vehicular motion control apparatus and vehicular motion control method

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 &#x3bc; value estimating portion estimates a road surface &#x3bc; value when the grip degree becomes equal to or lower than a reference value.

Road surface friction state estimating apparatus and method thereof

A vehicular brake control method and apparatus having a controller that controls a pressure of a supplied operating fluid to the wheels. The vehicle brake control apparatus includes brakes that apply braking forces corresponding to the pressure of the operating fluid to the wheels. A pump is provided that force-feeds the operating fluid. A valve is disposed to adjust the pressure of the operating fluid that is force-fed from the pump. The controller performs an operation control of the pump and the valve to control the pressure of the operating fluid to be supplied to the brakes when the controller determines that the braking forces are to be applied to the vehicle. The controller controls a pressure-increasing gradient of a fluid pressure by controlling both the pump and the valve during a pressure-increasing control for increasing the pressure in the brakes.

Vehicular brake control method and apparatus

A driving control device and methods including controllers for independently controlling a steering angle, and braking and driving force of each wheel. The device includes detectors that detect driver input including a steering operation amount, a driving force operation amount, and a braking force operation amount. Moreover, the device includes calculators that calculate a vehicle target longitudinal and lateral force, and a vehicle target yaw moment based on the inputs by the driver, a target generating force of each wheel based on the detected amounts, and a target steering angle and target braking and driving torque of each wheel based on the target generating force of each wheel. Finally, a controller controls the device so that a steering angle and the braking and driving torque of each wheel are determined to be the target steering angle and the target braking and driving torque.

Driving control device and methods for vehicle

A device for measuring a rotation angle of a rotary element has first, second and third photo-electric sensors, and a rotary disk having first and second circular arrays of openings, each radial edge of the first array of openings being adapted to be detectable by the first photo-electric sensor so as to generate a first electric signal alternating between &ldquo;on&rdquo; and &ldquo;off&rdquo; each time when the rotary disk rotates each five times of a unit angle, each radial edge of the second array of openings being adapted to be detectable by the second and third photo-electric sensors so as to generate second and third electric signals, respectively, the second and third signals each alternating between either &ldquo;on&rdquo; and &ldquo;off&rdquo; or &ldquo;off&rdquo; and &ldquo;on&rdquo; each time when the rotary disk rotates alternately two times and three times of the unit angle, the &ldquo;on&rdquo; and &ldquo;off&rdquo; alternations of the first, second and third signals being shifted from one another by a multiple (including one) of the unit angle, wherein the &ldquo;on&rdquo; and &ldquo;off&rdquo; alternations of the first, second and third signals successively occurs are counted to obtain a rotation angle of the disk, and various irregularities in the occurrence of the &ldquo;on&rdquo; and &ldquo;off&rdquo; signals are checked by the order of occurrence thereof in each set of five consecutive occurrences thereof.

Growing community of inventors

Numazu, Japan

Shoji Inagaki