Abstract: A motor power supply device includes a first power supply, a motor driven by a power supplied from the first power supply, a first power supply line, a first power supply side semiconductor switch, a first output side semiconductor switch, a first power supply side voltage detection unit disposed on a first power supply side with respect to the first power supply side semiconductor switch on the first power supply line and configured to detect a voltage of the first power supply line, and a control unit configured to execute control to determine a state of power supply from the first power supply to the first power supply side semiconductor switch based on a measured value obtained by the first power supply side voltage detection unit.

Abstract: 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.

Abstract: A shift device mounted on a vehicle includes a motor configured to drive, by electric power supplied from a power supply mounted on the vehicle, a shift switching member configured to switch shift positions, a cut-off unit configured to cut off conduction of a power supply line through which the electric power is supplied to the motor, and a drive circuit unit configured to output the electric power to the motor and including a driving switching element configured to execute a switching operation. The shift device is configured to determine an abnormality of the power supply line when a voltage of the power supply line is smaller than a predetermined threshold value, turn off the driving switching element, and cut off the conduction of the power supply line by the cut-off unit.

Abstract: 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.

Abstract: 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.

Abstract: 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. The shift device detects the number of rotations of the motor based on association between output values of the output shaft rotational angle sensor and the rotor rotational angle sensor.

Abstract: 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.

Abstract: A shift device mounted on a vehicle includes a motor configured to drive, by electric power supplied from a power supply mounted on the vehicle, a shift switching member configured to switch shift positions, a cut-off unit configured to cut off conduction of a power supply line through which the electric power is supplied to the motor, and a drive circuit unit configured to output the electric power to the motor and including a driving switching element configured to execute a switching operation. The shift device is configured to determine an abnormality of the power supply line when a voltage of the power supply line is smaller than a predetermined threshold value, turn off the driving switching element, and cut off the conduction of the power supply line by the cut-off unit.

Abstract: 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.

Abstract: A motor power supply device includes a first power supply, a motor driven by a power supplied from the first power supply, a first power supply line, a first power supply side semiconductor switch, a first output side semiconductor switch, a first power supply side voltage detection unit disposed on a first power supply side with respect to the first power supply side semiconductor switch on the first power supply line and configured to detect a voltage of the first power supply line, and a control unit configured to execute control to determine a state of power supply from the first power supply to the first power supply side semiconductor switch based on a measured value obtained by the first power supply side voltage detection unit.

Abstract: 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.

Abstract: Provided is a semiconductor device including: a semiconductor substrate having a substrate upper surface; and an embedded oxide film provided in the substrate upper surface and at least partially embedded below the substrate upper surface. An upper surface of the embedded oxide film has an end portion and a central portion in a direction parallel to the substrate upper surface. The end portion of the upper surface of the embedded oxide film is disposed at the same height position as the substrate upper surface or below the substrate upper surface. The central portion of the upper surface of the embedded oxide film is disposed at a position higher than the end portion of the upper surface.

Abstract: 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.

Abstract: A shift-by-wire system configured to switch shift positions includes a detent plate, a detent spring, a rotating electrical machine, a gear device, and an electronic control unit. The electronic control unit provided in the shift-by-wire system is configured to control a rotating electrical machine torque. The electronic control unit is configured to reverse the rotating electrical machine torque after the electronic control unit makes the rotating electrical machine output the rotating electrical machine torque for turning the detent plate in a turning direction to switch the shift position, then the detent torque generated in the detent plate by a push of the engagement portion is reversed in the turning direction from a counter-turning direction opposite to the turning direction, and before backlash elimination in a backlash portion of the gear device by the reversed detent torque is finished.

Abstract: 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.

Abstract: 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. The shift device detects the number of rotations of the motor based on association between output values of the output shaft rotational angle sensor and the rotor rotational angle sensor.

Abstract: A flexible device is provided. The hardness of a bonding layer of the flexible device is set to be higher than Shore D of 70, or preferably higher than or equal to Shore D of 80. The coefficient of expansion of a flexible substrate of the flexible device is set to be less than 58 ppm/° C., or preferably less than or equal to 30 ppm/° C.

Abstract: A flexible device is provided. The hardness of a bonding layer of the flexible device is set to be higher than Shore D of 70, or preferably higher than or equal to Shore D of 80. The coefficient of expansion of a flexible substrate of the flexible device is set to be less than 58 ppm/° C., or preferably less than or equal to 30 ppm/° C.

Abstract: A shift apparatus mounted on a vehicle includes: a shift switching member including valley sections according to a shift position; a positioning member provided to establish the shift position in a state of being fitted into any of the valley sections; an actuator for driving the shift switching member; and a driving force transmission mechanism including a driving-side member on an actuator side and a driven-side member on a shift switching member side, and rotating the shift switching member, wherein the driving-side and driven-side members are able to relatively rotate in an engaged state by a predetermined amount of backlash, and a position of a valley bottom of the valley section is configured to be learned, based on a difference between rotational angles on the actuator side and the shift switching member side.

Abstract: A flexible device is provided. The hardness of a bonding layer of the flexible device is set to be higher than Shore D of 70, or preferably higher than or equal to Shore D of 80. The coefficient of expansion of a flexible substrate of the flexible device is set to be less than 58 ppm/° C., or preferably less than or equal to 30 ppm/° C.