Honda Motor Co., Ltd.

Sony Corporation

Satoshi Kawabe

Takashi Yamazaki

Norio Yamazaki

Satoshi Nagasawa

Akihiro Ogata

Kouji Nakamura

Hideaki Kushida

Junichi Seto

Hidekazu Ebihara

Takeshi Niikura

Kazuhiko Inaba

Shinnosuke Oguma

Shigenobu Sekiya

Shigeki Ehara

Tomohiro Morikami

There is provided an estimated steering angle calculation device for a vehicle capable of suppressing deterioration in accuracy of an estimated steering angle even if vehicle wheels slips or is locked due to acceleration or deceleration of the vehicle. Although, when being accelerated during turning, tire gripping force of front wheels serving as a driving wheel increases and a difference between wheel speeds of the front wheels decreases so that an estimated steering angle &#x3b8;es relative to an actual steering angle &#x3b8;act tends to decrease, the deterioration in accuracy of the estimated steering angle &#x3b8;es due to this tendency can be suppressed by increasing a second contribution rate relative to the estimated steering angle &#x3b8;es on the rear wheel side and decreasing a first contribution rate on the front wheel side in accordance with an accelerator opening degree.

Estimated steering angle calculation device for vehicle

An electronic power steering apparatus for a vehicle having a steering mechanism to generate a steering assisting force includes: a steering angle sensor; a steering torque sensor; a target steering torque setting unit for setting a target steering torque based on the detected steering angle; a torque deviation computing unit for computing a torque deviation between the target steering torque and the detected steering torque; a first target current value computing unit for computing a first target current value for generating a steering assisting force by the motor based on the computed torque deviation; and a vehicle speed sensitivity adjusting unit that adjusts the first target current value, at least corresponding to a detected vehicle speed, and outputs the adjusted first current value as a second target current value. The motor control unit controls the motor to generate the steering assisting force based on the second target current value.

Electronic power steering apparatus

There is provided a light-emitting device including a wireless communication unit that performs wireless communication with another device, a light-emitting unit that emits light, and a control unit that performs control by switching between a mode in which the light emission of the light-emitting unit is controlled in accordance with a timing at which a signal is received by the wireless communication unit and a mode in which the light emission of the light-emitting unit is controlled in accordance with an internal timer based on a light emission timing included in a signal received from the other device by the wireless communication unit.

Light-emitting device, method of controlling light-emitting device, and program

Provided is an electric power steering system that prevents the oscillation of the steering wheel at each steering stroke end. If the steering stroke end flag Fse is 1 or if the determination result is Yes in step S, the EPS-ECU () determines if the right steering flag (Fdrc) is 1 in step S. If the determination result is Yes, it is then determined if the steering torque difference base value (Dtsb) is positive in step S. If the determination result of step Sis Yes, the EPS-ECU () uses the steering torque difference base value (Dtsb) as the steering torque difference (Dts) in step S. If the determination result is No, the steering torque difference (Dts) is given by a value 0 in step S, and the control process is concluded.

Electric power steering system

Growing community of inventors

Saitama, Japan

Satoshi Kawabe