Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Susumu Ohta

Junichi Yoshida

Hiroyuki Kawagoe

Yoshiki Noro

Yoshinobu Mukai

Osamu Tsurumiya

Hironobu Kiryu

Toshio Yahagi

Kazuya Sakurai

Akio Kobayashi

Shinzi Hironaka

Akira Ozawa

Takao Kurosawa

Yoshio Kakizaki

Hitoshi Suda

Tomoaki Sugano

Kazunari Okada

Masakazu Shiraishi

Nobuyuki Imaizumi

Satoshi Shimada

Yoshihiro Iwagama

A turning motion control system for a vehicle includes an actuator, and an actuator control device for controlling the actuator so that an actual turning motion state of the vehicle becomes close to a target turning motion state. The actuator control device is designed so that its control-permitted state and its control-stopped state can be switched from one to another through a switching device operated by a driver. When an air-pressure decreased state detecting device has detected an air-pressure decreased state, the actuator control device carries out the control of the operation of the actuator, irrespective of a switching mode of the switching device. Thus, even if an air-pressure decrease or an abnormality is generated in any of wheels in a state in which the turning motion control by the actuator has been stopped, the stability of the vehicle can be ensured.

Turning motion control system for vehicle

A current detecting apparatus comprises a determining unit which determines whether the electric potential of a first node or a second node is in a predetermined range. When the condition that the electric potential is not in the predetermined range continues longer than the predetermined period of time, the determining signal indicating the damage occurrence is outputted. Accordingly, the damage of the constituting elements can exactly be determined with the relatively simple configuration in a short time.

Current detecting apparatus and electric motor control apparatus

A displacement detector for enabling a precise detection of a displaced quantity of the core. The displacement detector is provided with a displaceable core, a detecting coil the inductance of which varies in response to a displaced quantity and a reference resistor, wherein a transient response voltage in case of a pulse voltage being applied to the inductance and the reference resistor is detected to enable detection of the absolute value of the inductance and thereby the change in the inductance which corresponds to the displaced quantity is detected independently of the peak value or the frequency of the pulse voltage. The displacement detector is preferably used in a torque sensor for an electric powered steering system, wherein the core of the displacement detector is formed of nonmagnetic metal material, the structure is simple, and a sensitive detection of a displaced quantity of the steering torque is possible.

Steering torque sensor utilizing a displacement detector having a pulse

An electrically operated steering apparatus for use on a motor vehicle has a cylindrical housing, an axially movable rack shaft disposed in the housing for steering steerable wheels coupled to the rack shaft, and an electric motor disposed in the cylindrical housing around the axially movable shaft for moving the axially movable shaft. A power supply for supplying electric energy to the electric motor is disposed outside of the cylindrical housing. A motor control circuit for generating a motor control signal based on a detected steering torque is disposed in the cylindrical housing. A motor driver circuit is disposed in the cylindrical housing for energizing the electric motor with the electric energy supplied from the power supply based on the motor control signal. An insert-molded board is disposed in the housing and electrically interconnecting the electric motor, the motor control circuit, and the motor driver circuit. The insert-molded board comprises electric conductors and a body of synthetic resin molded around the electric conductors.

Electrically operated steering apparatus

An arrangement for compensating the thermal characteristics of a sensor including a core movable from a neutral position in two directions along a line and two detecting coils symmetrically disposed along the line with the neutral position placed at the center of symmetry, in which sensor a change in the inductance of the two detecting coils due to the movement thereof is electrically detected, the arrangement being adapted so that the numbers of wire turns in the two detecting coils are set different to compensate a mechanically produced change in the thermal characteristics of the sensor. The arrangement allows a mechanical positional difference between the detecting coils and the core due to a temperature change to be compensated and an output voltage drift due to a temperature change to be reduced, thus increasing sensor accuracy.

Arrangement for compensating thermal characteristics of sensor

Growing community of inventors

Wako, Japan

Susumu Ohta