摘要:
A shift-by-wire control system includes a parking lock device that brings an output shaft of an automatic transmission device to a lock state when a range switching unit switches to the P-range. The parking lock device brings the output shaft to a lock-release state when the range switching unit switches to another shift range. An electric motor actuates the range switching unit and the parking lock device in accordance with an instruction of an operator. A manual device transmits manual operation force of the operator to the parking lock device when the electric motor stops. The manual device includes a one-way transmission unit permitting transmission of the manual operation force in a direction toward the lock state, and prohibiting transmission of the manual operation force in a direction toward the lock-release state.
摘要:
A brushless synchronous motor includes a stator having a plurality of phase coils, a rotor disposed opposite the stator, a magnetic sensor for detecting a rotation angle of the rotor, a power supply circuit connected to the phase coils, a control circuit for controlling the power supply circuit so that the motor rotates synchronously. In the above motor, a circuit board includes a wiring circuit connecting the phase coils with the power supply circuit, and the magnetic sensor is directly fixed to the circuit board so that dimensional variation of the magnetic sensor relative to the stator can be minimized.
摘要:
A vehicle control system for a vehicle includes a backup device which enables manual control of an automatic transmission apparatus, when a shift-by-wire device cannot electronically control the transmission apparatus. The backup device is normally restricted from operating, but released from the restricted condition when the shift-by-wire device is inoperable and a vehicle user is an authorized person. The vehicle user is checked by an immobilizer device, which also restricts the vehicle operation by disabling engine operation and by locking a steering wheel when the vehicle user is determined to be an unauthorized person.
摘要:
A shift range switching apparatus includes an automatic transmission that includes a shift range switching device having a control rod for switching an actual shift range corresponding to rotation angle of the control rod. The shift range switching apparatus further includes an electric actuator that includes an output shaft connecting with the control rod. The electric actuator switches the actual shift range by rotating the control rod via the output shaft. The shift range switching apparatus further includes an assembly regulating device that allows the electric actuator to be detachable from and attachable to the automatic transmission when the actual shift range of the shift range switching device is set at a specific shift range.
摘要:
An actuator for a valve lift controller linearly driving a control shaft of a changing mechanism comprises a feed screw mechanism including a screwed shaft linearly moving along with the control shaft, and a rotation spindle rotating coaxially with the screwed shaft. The feed screw mechanism converts a rotational movement of the rotation spindle into a linear movement of the screwed shaft. Moreover, the actuator comprises a unit attached to the rotation spindle, an electric power distributor located at an opposite side of the screw mechanism relative to the changing mechanism, and an stopper member restricting a movement of the unit in the axial direction from an electric power distributor to the unit.
摘要:
A reference position detecting apparatus includes an electric motor and a motor control unit. The electric motor includes a plurality of first coils and a plurality of second coils. The electric motor further includes a rotor that rotates when at least one of the plurality of first coils and the plurality of second coils is supplied with electricity. The motor control unit controls electricity supplied to either one of the plurality of first coils and the plurality of second coils to rotate the rotor to a limit position in a movable range of an object.
摘要:
An end surface of a rotor core is offset from an end surface of a stator core by a predetermined amount in an axial direction going away from Hall ICs. In an operating condition of the motor, magnetomotive forces generating from the stator core induce a thrust force acting on the rotor core. The gap (i.e. distance) between the magnet and the Hall ICs does not exceed a pre-designated appropriate distance, and is stably maintained at a constant level (or range). In other words, the gap (i.e. distance) between the magnet and the Hall ICs can be accurately maintained at the pre-designated appropriate distance by utilizing the magnetic attraction force generating from the stator core.
摘要:
A reference position detecting apparatus includes an electric motor and a motor control unit. The electric motor includes a plurality of first coils and a plurality of second coils. The electric motor further includes a rotor that rotates when at least one of the plurality of first coils and the plurality of second coils is supplied with electricity. The motor control unit controls electricity supplied to either one of the plurality of first coils and the plurality of second coils to rotate the rotor to a limit position in a movable range of an object.
摘要:
A shift-by-wire control system includes a parking lock device that brings an output shaft of an automatic transmission device to a lock state when a range switching unit switches to the P-range. The parking lock device brings the output shaft to a lock-release state when the range switching unit switches to another shift range. An electric motor actuates the range switching unit and the parking lock device in accordance with an instruction of an operator. A manual device transmits manual operation force of the operator to the parking lock device when the electric motor stops. The manual device includes a one-way transmission unit permitting transmission of the manual operation force in a direction toward the lock state, and prohibiting transmission of the manual operation force in a direction toward the lock-release state.
摘要:
A thin plate 80x forming a stator tooth 80 has two convex portions 83 on each of side faces 80b, 80c. Four convex portions 83 are a sharpened convex portion 83a of which a tip portion has a thickness thinner than a thickness of the thin plate 80x. When a bobbin 81 wound with an exciting coil 22 is press-fitted around the stator tooth 80, four lines of convex portions formed by laminating the thin plates 80x cut in an inner wall of the bobbin 81, the strength for fixing and holding the bobbin 81 can be increased in a radial, lamination and rotating directions, so that the position of the bobbin 81 assembled in a right position can be maintained.