Aisin Corporation

Toyota Jidosha Kabushiki Kaisha

Kota Ishikawa

Takeshi Kitahata

Eiji Ichioka

Atsuto Ogino

Yutaka Uchida

Hiroshi Shibata

Kazuaki Ishiura

Kentaro Baba

A driving assistance device performs driving assistance of a vehicle on a basis of surrounding information collected by a plurality of sensors provided in the vehicle. The driving assistance device includes: a route calculation unit configured to calculate a movement route of the vehicle to a target position on a basis of the surrounding information from the plurality of sensors; a switching unit configured to switch settings of an upper limit value of acceleration of the vehicle between a first acceleration limit value and a second acceleration limit value smaller than the first acceleration limit value; and a movement control unit configured to move the vehicle along the movement route while controlling the vehicle at acceleration within the upper limit value set by the switching unit, wherein the switching unit sets the upper limit value of the acceleration of the vehicle to the second acceleration limit value in a case where the vehicle is stopped and a steering angle of the vehicle is equal to or more than a predetermined threshold value during control of the vehicle by the movement control unit.

Driving assistance device

A shift device includes a shift switching member including a plurality of valley portions; a positioning member configured to establish a shift position; a motor configured to drive the shift switching member; a rotor rotation angle sensor; and an output shaft rotation angle sensor configured to detect a rotation angle of the shift switching member. When the positioning member is moved to pass through the plurality of valley portions, the rotation angle of the motor corresponding to the valley bottom of each of the plurality of valley portions is acquired by, based on output values of the rotor rotation angle sensor and the output shaft rotation angle sensor, and a design value associated with the output value of the output shaft rotation angle sensor and the shift positions, detecting the valley bottom at an end portion among the valley portions and reversing the movement of the positioning member.

Shift device

A shift device includes: a shift switching member including plural valleys corresponding to shift positions; a driving unit including a motor, the motor including a rotor and a stator, and configured to drive the shift switching member; a temperature detecting unit configured to detect a temperature of the motor; and a control unit configured to adjust a control gain based on the temperature detected by the temperature detecting unit.

A shift device includes a shift switching member including a plurality of valley portions corresponding to shift positions, a motor including a rotor and a stator and configured to drive the shift switching member, a first drive system including a first inverter configured to output a voltage for driving the motor, a second drive system provided separately from the first drive system and including a second inverter configured to output a voltage for driving the motor; and a positioning member configured to be fitted into any one of the plurality of valley portions of the shift switching member to establish the corresponding shift position. When driving the motor, the shift position is switched by the voltages output from the first drive system and the second drive system.

A shift device includes: a shift switching member including valley portions corresponding to shift positions; a motor including a rotor and a stator and configured to drive the shift switching member; a first drive system including a first control unit configured to control a voltage for driving the motor; a second drive system provided separately from the first drive system and including a second control unit configured to control a voltage for driving the motor; and a positioning member configured to establish the shift positions in a state in which the positioning member is fitted into any one of the valley portions of the shift switching member. The shift device acquires the shift positions when the motor is driven by the voltage output from one of the first and second drive systems to move the positioning member such that the positioning member continuously passes through the valley portions.

A shift device includes: a shift switching member including a plurality of valley portions corresponding to shift positions; a motor that includes a rotor and a stator and that is configured to drive the shift switching member; and a positioning member configured to establish the shift positions in a state in which the positioning member is fitted into any one of the plurality of valley portions of the shift switching member. The shift device is configured to learn the shift positions based on a change amount of a load torque applied to the motor while the positioning member is moved to continuously pass through the plurality of valley portions.

A shift device includes: a shift switching member including valley parts corresponding to a shift position; a positioning member provided to establish the shift position in a state of being fitted into any one of the valley parts; a motor including a rotor and a stator and driving the shift switching member; a speed reduction mechanism section rotating the shift switching member in a state in which a rotation speed transmitted from the motor is reduced; a rotor rotational angle sensor detecting a rotational angle of the rotor; and an output shaft rotational angle sensor detecting a rotational angle of the shift switching member A width of a backlash included in the speed reduction mechanism section is detected, and the rotational angle of the motor corresponding to the center of the backlash is acquired.

A shift device includes: a shift switching member including valley portions provided so as to correspond to shift positions; a positioning member causing the shift position to be established while being fitted in any of the valley portions of the shift switching member; a motor driving the shift switching member and including a rotor and a stator; a driving force transmission mechanism transmitting a driving force from the motor to the shift switching member; and a rotor rotation angle sensor and an output shaft rotation angle sensor detecting rotation angles of the rotor and the shift switching member. The shift device corrects a deviation from a center of a preset backlash when a backlash width included in the driving force transmission mechanism detected based on output values of the output shaft rotation angle sensor and the rotor rotation angle sensor is a value or more during a shift switching operation.

Growing community of inventors

Kariya, Japan

Kota Ishikawa