摘要:
Embodiments of the present invention effectively control utilizing a spoiler, the windage vibration of a magnetic head caused by the airflow generated in accordance with rotation of a magnetic disk, while reducing the dust flowing in on the downstream side of the spoiler. According to one embodiment, a spoiler is provided with wings facing a plurality of magnetic disks and a supporting section for the wings is disposed on the upstream side of a head stack assembly in the airflow direction in accordance with the rotation of the magnetic disks. Further, the wings each extend in a direction from the outer circumferences of the magnetic disks towards the spindle shaft while reducing the width of the wing, and is formed to have the width of the wing in a range of 2.7% through 2.9% of the circumferential length of the magnetic disks in a range of two thirds of the length of the wing in a direction towards the spindle shaft from a region located at the outer circumferences of the magnetic disks.
摘要:
Embodiments of the present invention effectively control utilizing a spoiler, the windage vibration of a magnetic head caused by the airflow generated in accordance with rotation of a magnetic disk, while reducing the dust flowing in on the downstream side of the spoiler. According to one embodiment, a spoiler is provided with wings facing a plurality of magnetic disks and a supporting section for the wings is disposed on the upstream side of a head stack assembly in the airflow direction in accordance with the rotation of the magnetic disks. Further, the wings each extend in a direction from the outer circumferences of the magnetic disks towards the spindle shaft while reducing the width of the wing, and is formed to have the width of the wing in a range of 2.7% through 2.9% of the circumferential length of the magnetic disks in a range of two thirds of the length of the wing in a direction towards the spindle shaft from a region located at the outer circumferences of the magnetic disks.
摘要:
A drive apparatus for a hybrid vehicle is provided with a first motor generator, a power splitting mechanism portion, and a second motor generator. The first motor generator functions mainly as a generator. The power splitting mechanism portion divides the power generated by the engine into power for the first motor generator and power for driven wheels. The second motor generator has an outside diameter that is smaller than the outside diameter of the first motor generator and is arranged on the side of the first motor generator opposite the engine. Further, a speed reducing mechanism portion which has an outside diameter smaller than the outside diameter of the second motor generator and which reduces the rotation speed of the second motor generator is provided on the side of the second motor generator opposite the engine.
摘要:
A drive apparatus for a hybrid vehicle is provided with a first motor generator, a power splitting mechanism portion, and a second motor generator. The first motor generator functions mainly as a generator. The power splitting mechanism portion divides the power generated by the engine into power for the first motor generator and power for driven wheels. The second motor generator has an outside diameter that is smaller than the outside diameter of the first motor generator and is arranged on the side of the first motor generator opposite the engine. Further, a speed reducing mechanism portion which has an outside diameter smaller than the outside diameter of the second motor generator and which reduces the rotation speed of the second motor generator is provided on the side of the second motor generator opposite the engine.
摘要:
The positioning accuracy of a magnetic head decreases due to vibrations in the in-plane rotation mode of an HDD, which are caused by couple or disturbance occurring in seek operation, due to vibrations in the thrust mode, and the conical mode, of the spindle, which are caused by disturbance, and due to vibrations in the case thrust mode, the spindle fall mode, and the like. In one embodiment, an elastic support member includes a pillar-shaped part. The elastic support member is provided with a recess on a surface opposite to a corner of a base, and longitudinal fin projections on the upper and lower sides with respect to the recess. The base is provided at its corner with a horizontal fin that is parallel to a disk surface. The horizontal fin is inserted into the recess of the elastic support member. The longitudinal fin projections come into contact with the base, and control basic vibrational characteristics on both the upper and lower sides with respect to the horizontal fin. The pillar-shaped part is provided with a zigzag-shaped part so that the pillar-shaped part may come into contact with a frame.
摘要:
An X-ray generator has an X-ray tube for generating X rays which are detected by an X-ray detector for feedback control of the X-ray tube. The filament current of the X-ray tube is controlled in accordance with the deviation of the X-ray intensity for compensating for any deviation which occurs due to the X-ray tube deterioration or fluctuation of the air density of the X-ray path.
摘要:
A drive apparatus for a hybrid vehicle is provided with a first motor generator, a power splitting mechanism portion, and a second motor generator. The first motor generator functions mainly as a generator. The power splitting mechanism portion divides the power generated by the engine into power for the first motor generator and power for driven wheels. The second motor generator has an outside diameter that is smaller than the outside diameter of the first motor generator and is arranged on the side of the first motor generator opposite the engine. Further, a speed reducing mechanism portion which has an outside diameter smaller than the outside diameter of the second motor generator and which reduces the rotation speed of the second motor generator is provided on the side of the second motor generator opposite the engine.
摘要:
A drive apparatus for a hybrid vehicle is provided with a first motor generator, a power splitting mechanism portion, and a second motor generator. The first motor generator functions mainly as a generator. The power splitting mechanism portion divides the power generated by the engine into power for the first motor generator and power for driven wheels. The second motor generator has an outside diameter that is smaller than the outside diameter of the first motor generator and is arranged on the side of the first motor generator opposite the engine. The second motor generator functions mainly as a motor and generates power to assist in driving the driven mechanism portion which has an outside diameter smaller than the outside diameter of the second motor generator and which reduces the rotation speed of the second motor generator is provided on the side of the second motor generator opposite the engine.
摘要:
A hard disk drive including a base portion, a motor-hub assembly to which at least one disk is coupled, the motor-hub assembly coupled with the base portion and an airflow shroud coupled with the base portion. The airflow shroud including an airflow inlet oriented parallel to the disk and an airflow outlet oriented perpendicular to the disk. In so doing, the airflow shroud reduces vibration of a rotating disk in a hard disk drive.
摘要:
In response to the driver's gearshift operation from a parking position to a drive position, the control procedure of the invention controls a motor connected to a transmission to output a center adjustment torque Tset, while the transmission is in a state of disconnecting the motor from an axle of a hybrid vehicle. The control procedure adjusts the rotation centers of respective rotational elements in the transmission by rotating the respective rotational elements, and then initiates gradual engagement of a brake to set the transmission in a low gear position. This arrangement desirably retains deviation of the rotation centers of the respective rotational elements in the transmission and prevents potential troubles due to the eccentric rotation centers of the respective rotational elements in the transmission.