摘要:
A scan exposure apparatus includes first and second light-shielding plates arranged within an illumination optical system for illuminating an original, the plates defining a region of the original to be illuminated in a direction of the scan. The scan exposure apparatus further includes a rotation mechanism that rotates at least one of the first and second light-shielding plates in a plane perpendicular to an optical axis of the illumination optical system so as to adjust distribution of widths in a direction perpendicular to the direction of the scan, each of the widths being a width of the region in the direction of the scan.
摘要:
A highly reliable control device for an AC generator without using a transistor and diode having high withstand voltage is provided.A control device for a vehicle AC generator including a voltage control circuit that controls an output voltage of a rectifying circuit connected to a stator coil to a substantially constant level has a first active switch having its one end connected to one end of the field coil and having its other end connected a negative output terminal of the rectifying circuit, a second active switch having its one end connected to a positive output terminal of the rectifying circuit and having its other end connected to the other end of the field coil, a first passive switch connected between the negative output terminal of the rectifying circuit and a connecting point of the second active switch and the field coil, and a second passive switch connected between the positive output terminal of the rectifying circuit and a connecting point of the first active switch and the field coil, and the first and second active switches are on/off-controlled independently of each other.
摘要:
The dynamoelectric machine includes: a Lundell rotor that has: a pole core in which tapered claw-shaped magnetic pole portions are arranged in rows circumferentially so as to extend axially alternately from two axial ends and intermesh with each other; and a field coil that is mounted to the pole core; and a stator that has: a cylindrical stator core that surrounds the rotor so as to have a predetermined air gap; and a stator coil that is mounted to the stator core. The stator core is prepared by laminating and integrating dull finish magnetic steel plates, and a space factor of an iron portion in the stator core is in a range of 96 percent plus or minus 0.5 percent.
摘要:
The rotating electric machine has a stator coil wound around a stator, a magnetic pole and a signal rotor fixed to a rotor, and a detection stator, disposed opposite to the signal rotor, for detecting the rotational position of the rotor, characterized by further comprising an adjuster for adjusting the position of the signal rotor or the detection stator by supplying a direct current to a predetermined phase of the stator coil and then a direct current to a different phase from the predetermined phase to rotate the rotor by a predetermined angle or more and constrain the rotor.
摘要:
An exhaust gas recirculation device for an engine having a cylinder head with a suction port and an exhaust port, provided with a mechanism for recirculating a portion of exhaust gas to the suction side of the cylinder head, comprises a connection hole is opened through a wall of the cylinder head disposed between the suction port and the exhaust port. The connection hole is bored vertically slantwise. The connection hole at the suction side is opened along the direction of swirls of sucked air. A throttle is disposed in at least either a suction flow passage communicating with the suction port or an exhaust flow passage communicating with the exhaust port so that the opening area of the suction flow passage or the exhaust flow passage can be adjusted by the throttle.
摘要:
Each of first and second pole cores has a boss portion, six core flange portions; and six claw-shaped magnetic pole portions, the first and second pole cores being disposed such that the claw-shaped magnetic pole portions face each other so as to intermesh and leading end surfaces of the boss portions are abutted with each other. The boss portions include coil mount portions in which cross-sectional shapes that are perpendicular to the central axis are hexagons; and abutted portions that have circular cross sections and that are disposed so as to protrude from leading ends of the coil mount portions. Radially-inner surfaces of the claw-shaped magnetic pole portions face side surfaces of the coil mount portions and are parallel to the side surfaces of the coil mount portions at the cross sections that are perpendicular to the central axis.
摘要:
The present invention provides an engine cover structure for an engine (1) whose cylinder head (7) is covered at three of front, rear, right and left sides thereof by a fuel tank (10), an air cleaner (20) and a muffler (9), respectively, comprising a cover (50) which covers the remaining one side and/or a top side of the cylinder head (7).
摘要:
A hair iron that can set hairstyles by heating and spraying a treatment agent comprises a pair of holding parts (1, 1); each having heating block (2), the surface of which acts as a holding surface (7); at least one holding part (1) containing liquid container (5), liquid holder (4) that brings the liquid in liquid container (5) in contact with heating block (2) as the liquid in liquid container (5) is transferred to heating block (2), and steam path (19) that sprays from holding surface (7) the steam generated as the liquid transferred from inside liquid container (5) is heated by the contact surface with heating block (2) of liquid holder (4). Hair is held between the holding surfaces (7, 7) of the pair of holding parts (1, 1), and under the action of the steam sprayed from the steam path (19), the hairstyle is set. In this hair iron (40), the liquid container (5) is set on the side of the heating block (2) opposite to the holding surface (7), and at the same time, the liquid holder (4) is set between the heating block (2) and the liquid container (5).
摘要:
In a synchronous motor control device that corrects a deviation in rotational position which is related to a rotational position detector for a synchronous motor on which vector-control is performed, the synchronous motor control device includes: a current instruction generator that disables a torque instruction to set d-axis and q-axis current instructions as zero when a phase correction instruction is inputted; a current controller that outputs d-axis and q-axis voltage instructions based on the d-axis and q-axis current instructions; a phase correction quantity detector for determining the amount of offset in which the d-axis voltage instruction becomes zero when the phase correction instruction is inputted and the d-axis voltage instruction is not zero; an adder for adding a rotor positional angle and the amount of offset; and a voltage converter for determining three-phase voltage instructions based on the additional value, the d-axis and q-axis voltage instructions.
摘要:
A control apparatus and a control method of an on-vehicle dynamo-electric machine 1 are provided for efficiently controlling functions as a starter-motor and as a charging generator. In case that the dynamo-electric machine 1 acts as a charging generator, when a rotation speed of the dynamo-electric machine 1 is not higher than a predetermined value, a power is generated by applying a compensation current from and inverter to an armature coil 3 for phase control. On the other hand, when a rotation speed of the dynamo-electric machine 1 is not lower than a predetermined value, operation of the inverter is stopped. Thus, controlling a current applied to a field coil 4 by a field coil current control means 5 generates a predetermined target voltage.