Nissan Motor Company Limited

Panasonic Corporation

Renesas Electronics Corporation

Ulvac, Inc.

Yosuke Kobayashi

Takeshi Kimura

Satoshi Tange

Genpei Naito

Yuuki Shiozawa

Toshiyuki Murata

Hideaki Inoue

Taku Suzuki

Yukinori Nishida

Mitsunori Ohta

Takeshi Sugano

Hironobu Kikuchi

Yoji Seto

Akihiro Itoh

Motoaki Hosaka

Yuwun Chai

Tomoaki Oida

Yoshifumi Takigawa

Masahiko Yoshizawa

Hiroki Sasaki

Yoshinori Yamamura

Kenichi Egawa

Nobuyuki Kuge

Youji Seto

Masahiro Kobayashi

Tomohiro Yamamura

Minoru Tamura

Yusuke Hashimoto

Yuya Takeda

Yusuke Kageyama

Nariaki Etori

Kouichi Akabori

Atsushi Nakatsuka

Masaaki Nawano

Tomoyuki Kashiwaya

Ken Momono

Masayuki Iljima

Kouji Hirayama

Shoji Kawaguchi

Ryuji Hamada

Tamaki Nakamura

An object of the vehicle body vibration-damping control device according to the present invention is to achieve a targeted effect for damping the vehicle body vibration regardless of the responsiveness of an actuator for controlling the drive torque. The vehicle body vibration-damping control device has a body vibration estimating unit () for estimating a sprung mass behavior of a vehicle body based on input information during travel, and a torque command-value computing unit () for computing a correction torque value for correcting a drive torque command value applied to an engine () when the sprung mass behavior is controlled. The torque command-value computing unit () has regulator and tuning units () for calculating the correction torque value based on the result of estimating the sprung mass behavior, and a nonlinear gain amplifying unit () for amplifying the absolute value of the correction torque when in a region where the positive or negative attribute of the calculated correction torque value is reversed, and using the amplified value to correct the drive torque command value.

Vehicle body vibration-damping control device

A steered condition vehicle behavior improving apparatus is provided for a vehicle, wherein the vehicle is capable of running with a road wheel driven by a driving force from a power source. The steered condition vehicle behavior improving apparatus includes a steering operation detecting means and a driving force reducing means. The steering operation detecting means detects a steering operation of steering a steerable wheel of the vehicle. The driving force reducing means temporarily reduces the driving force to the road wheel a set time period after the steering operation is detected by the steering operation detecting means.

Device for improving vehicle behavior when steering

A vehicle body vibration estimating device for estimating a vehicle body vibration as a sprung mass of a vehicle where wheels are suspended via a suspension device. The vehicle body vibration estimating device includes a wheel speed physical quantity detecting section and a vibration estimating section. The wheel speed physical quantity detecting section detects a wheel speed physical quantity related to wheel speed, which is a circumferential velocity of a wheel. The vibration estimating section estimates the vehicle body vibration from a correlation relationship between displacements in a back-and-forth direction and displacements in an up-and-down direction of the wheels with respect to the vehicle body, and the wheel speed physical quantity detected by the wheel speed physical quantity detecting section.

Device for estimating vehicle body vibration and controller for suppressing vehicle body vibration using same

A vehicle damping control apparatus is basically provided with a braking/accelerating torque generating component, a corrective torque calculating component, a corrective torque command value output component and a priority level setting component. The braking/accelerating torque generating component is configured to generate braking/accelerating torque in a wheel. The corrective torque calculating component is configured to calculate a corrective torque to suppress vehicle pitching vibration and vehicle bouncing vibration. The corrective torque command value output component is configured to output a corrective torque command value to the braking/accelerating torque generating component based on the corrective torque. The priority level setting component is configured to set a priority level for calculating the corrective torque command value such that vehicle bouncing vibration is suppressed with priority over vehicle pitching vibration.

Vehicle damping control apparatus

A system for assisting an operator in driving a vehicle. The system calculates risk potential associated with the vehicle. Responsive to an acceleration command issued by the operator via an operator-controlled input device to perform an intended acceleration operation, the system conveys information related to the calculated risk potential by modifying a relationship of an amount of acceleration corresponding to an operation amount of the operator-controlled input device, based on the calculated risk potential.

Driving assisting system, method and vehicle incorporating the system

A vehicular vibration damping control apparatus calculates a correction torque to suppress vehicle body sprung vibration. In outputting a correction torque command to a driving/braking torque producing device, the control apparatus outputs a hunting time correction torque command smaller than a normal time correction toque command when a state in which amplitude of the correction torque is greater than or equal to a predetermined amplitude continues for a predetermined time length, and thereafter to return an output of the correction torque command from the hunting time correction torque command to the normal time correction torque command if a state in which the amplitude of the correction torque is smaller than or equal to the predetermined amplitude continues for a first predetermined time length. The frequency of performing the vibration damping control is increased by suppressing occurrence of hunting at the time of return to the normal vibration damping control.

Vibration-damping control device for vehicle

In a vehicle body vibration damping control device, a priority level setting section is configured to set priority levels of a pitching vibration of a vehicle body which is a sprung mass and a bouncing vibration thereof to take a higher priority for a suppression of the pitching vibration between the pitching vibration and the bouncing vibration and a damping purpose braking-or-driving force correction quantity calculation section configured to determine a damping purpose braking-or-driving force correction quantity to suppress vehicle body vibrations on a basis of the pitching vibration and the bouncing vibration, while satisfying the priority levels set by the priority level setting section, to contribute onto a corrective control of a road wheel braking-or-driving force.

Vehicle body vibration damping control device

Predetermined weights are assigned, in accordance with a traveling state, to a first correction toque to suppress a sprung vibration of the vehicle in accordance with a wheel speed, and a second correction toque to suppress the sprung vibration of the vehicle in accordance with a driving/braking torque. With this configuration, it becomes possible to calculate the vibration suppressing torque corresponding to the traveling state.

Vibration-restraining control apparatus for vehicle

A correction torque command is outputted to a driving/braking torque producing means in accordance with a correction torque to suppress vehicle body spring vibration. When a state of the correction torque amplitude being greater than a predetermined amplitude continues for a given predetermined time, a control apparatus outputs a hunting time correction torque command smaller than a normal time correction toque command. When a state of the correction torque amplitude being smaller than or equal to the predetermined amplitude continues for a first predetermined time, the control apparatus returns the output of correction torque command from the hunting time correction torque command to the normal time correction torque command. The control apparatus continues the output of the hunting time correction torque command if the state in which the correction torque amplitude exceeds the predetermined amplitude continues for the given predetermined time, before the expiration of the first time period.

Vehicle damping control device

A vehicle driving operation support apparatus for a vehicle, includes a sensing section to sense a traveling condition of the vehicle including a surrounding condition inclusive of an obstacle around the vehicle, and a control section to calculate a risk potential for the vehicle in accordance with the traveling condition. The control section performs a support control to support the driver in accordance with the risk potential and performs an assist control to produce inducement simulating a condition change (such as a vehicle behavior) attributable to an increase of the risk potential, in accordance with the risk potential.

Vehicle driving operation support apparatus/process and inducement control

A magnetic random access memory which includes a magnetic record layer which is ferromagnetic; a ferromagnetic magnetization fixed layer whose magnetization is fixed; and a non-magnetic spacer layer provided between the magnetic record layer and the magnetization fixed layer. The magnetic record layer includes a magnetization invertible region whose magnetization is invertible and which is connected to the magnetization fixed layer through the spacer layer; a first magnetization region which has a magnetization in a first direction and which is provided in parallel to the magnetization invertible region; a second magnetization region which has a magnetization in a second direction and which is provided in parallel to the magnetization invertible region; a first inclined region connected to the magnetization invertible region and the first magnetization region at a predetermined inclination angle; and a second inclined region connected to the magnetization invertible region and the second magnetization region at the inclination angle.

Domain-wall motion type magnetic random access memory with inclined regions and initializing method

A vehicle driving operation support apparatus for a vehicle, includes a sensing section to sense a traveling condition of the vehicle including a surrounding condition inclusive of an obstacle around the vehicle, and a control section to calculate a risk potential for the vehicle in accordance with the traveling condition. The control section performs a support control to support the driver in accordance with the risk potential, and performs an assist control to restrain disturbance (such as vibration from a road) transmitted to the driver in accordance with the risk potential.

Vehicle driving operation support apparatus/process and restraint control

A vehicle driving operation support apparatus for a vehicle, includes a sensing section to sense a traveling condition of the vehicle including a surrounding condition inclusive of an obstacle around the vehicle; and a control section to calculate a risk potential for the vehicle in accordance with the traveling condition. The control section performs a support control to support the driver in accordance with the risk potential, performs a first assist control to restrain disturbance (such as vibration from a road) transmitted to the driver in accordance with the risk potential, and performs a second assist control to produce inducement simulating a condition change (such as a vehicle behavior) attributable to an increase of the risk potential, in accordance with the risk potential. The control section further performs a cooperation control to coordinate the first assist control and the second assist control.

Vehicle driving operation support apparatus/process and cooperation control

A motor vehicle includes a vehicle driving operation support system. The vehicle driving operation support system senses an environment surrounding the motor vehicle; senses a traveling condition of the motor vehicle; calculates a risk potential of the motor vehicle on a basis of the sensed environment and the sensed traveling condition; controls the motor vehicle on a basis of a control setpoint. The vehicle driving operation support system sets on a basis of the calculated risk potential the control setpoint to a provisional setpoint effective for reducing the risk potential; senses driver's operation in reaction to the controlling operation with the control setpoint set to the provisional setpoint; and sets the control setpoint to a normal setpoint on a basis of the sensed driver's operation.

Vehicle driving operation support apparatus/method and vehicle

A vehicle driving assist system calculates a risk potential indicative of a degree of convergence between a host vehicle and a preceding obstacle. Then, the system performs a driver notification operation that produces a driver notification stimulus based on the risk potential such as decreasing the driving force exerted against the vehicle as the risk potential increases and increasing an actuation reaction force exerted on the accelerator pedal during its operation as the risk potential increases. If a failure is detected in a reaction force generating device serving to add a reaction force to the accelerator pedal in accordance with the risk potential, then the system corrects an engine torque characteristic such that the engine torque does not increase even if the accelerator pedal is depressed to suppress an odd feeling in the vehicle performance by the driver when a failure occurs in the reaction force generating device.

Vehicle driving assist system

Growing community of inventors

Yokohama, Japan

Yosuke Kobayashi