Abstract: A rotating electrical machine is proposed which effectively cools a stator and prevents the generation of an eddy current in the stator. A cooling liquid passage extends in a direction parallel with the rotating shaft of the rotor between an outer peripheral face of the stator cores and an inner peripheral face of the case storing the stator cores. The cooling liquid is passed through the cooling liquid passage. In this manner, a highly effective cooling results from direct contact of the cooling liquid and the stator cores. Furthermore an eddy current is not generated in the stator core as a result of using a cooling liquid having insulating properties.

Abstract: A rotor structure for a permanent-magnet motor is disclosed as including an annular laminated stack (2) of electromagnetic steel sheets incorporating magnets, annular end plates (1a, 1b) located at both ends of the annular laminated stack to hold the same, a cylindrical core buck (3) carrying thereon the annular laminated stack and the annular end plates, and a rotor shaft (5) integrally connected to the cylindrical core buck for rotating movement. The annular laminated stack has a plurality of first fixing portions (8a, 8a′, 8a″; 8b, 8b′, 8b″), and each of the annular end plates has a plurality of second fixing portions (7a, 7a′, 7a″; 7b, 7b′, 7b″) which are held in engagement with the first fixing portions of the annular laminated stack, with the annular end plates and the annular laminated stack being fixed to one another by caulking at the first and second fixing portions.

Abstract: A controller for motor/generators is proposed which allows reductions in ripple current generated by an inverter driving a power-generating motor/generator and a vehicle-driving motor/generator.

Abstract: A first inverter circuit (3A) and a second inverter circuit (3B) are formed on a substrate (25). The first inverter circuit (3A) outputs a first three-phase alternating current generated by a first group of switching elements (SW1, SW2, SW3, SW4, SW5, SW6) via a first output busbar (28UA), a second output busbar (28VA), and a third output busbar (28WA). A second inverter circuit (3B) outputs a second three-phase alternating current generated by a second group of switching elements (SW7, SW8, SW9, SW10, SW11, SW12) via a fourth output busbar (28UB), a fifth output busbar (28VB), and a sixth output busbar (28WB). The fourth output busbar (28UB) is in close proximity to the first output busbar (28UA), the fifth output busbar (28VB) is in close proximity to the second output busbar (28VA) and the sixth output busbar (28WB) is in close proximity to the third output busbar (28WA).

Abstract: A first inverter circuit (3A) and a second inverter circuit (3B) are formed on a substrate (25). The first inverter circuit (3A) outputs a first three-phase alternating current generated by a first group of switching elements (SW1, SW2, SW3, SW4, SW5, SW6) via a first output busbar (28UA), a second output busbar (28VA), and a third output busbar (28WA). A second inverter circuit (3B) outputs a second three-phase alternating current generated by a second group of switching elements (SW7, SW8, SW9, SW10, SW11, SW12) via a fourth output busbar (28UB), a fifth output busbar (28VB), and a sixth output busbar (28WB). The fourth output busbar (28UB) is in close proximity to the first output busbar (28UA), the fifth output busbar (28VB) is in close proximity to the second output busbar (28VA) and the sixth output busbar (28WB) is in close proximity to the third output busbar (28WA).

Abstract: A rotor (11) for a synchronous motor is provided with a plurality of magnets (15) being substantially V-shaped in cross-section. The V-shaped cross-section is defined by an inner V-surface (25), an outer V-surface (19) and an outward face (23) facing outwardly. A first angle &agr; is subtended between a first straight line connecting a point of intersection (31) of the outer V-surface (19) and the outward face (23) and a second straight line connecting the center (35) of the rotor (11) and the acute angle point (27). A second angle &bgr; is subtended between the first straight line and a third straight line connecting a point of intersection (33) of the inner V-surface (25) and the outward face (23). By setting the angle &bgr;, to be larger than 20 percent of the angle &agr;, leakage flux at both ends of the magnets (15) is reduced.

Abstract: A multi-contact inputting device has a center switch (S1) and plural side switches (S2) that are placed around the center switch (S1). The multi-contact inputting device is used for inputting and outputting different signals by operating an operation member (7). The movable electrodes (41, 42) are placed so as to overlap with each other in the thickness direction of the body (1). Arranging the movable electrodes (41, 42) in the manner described above, realizes miniaturization and compaction of the multi-contact inputting device. Each of the center switch (S1) and the side switches (S2) is formed by a stationary electrode (31, 32) and a movable electrode (41, 42) configured by a snap plate. The movable electrode (41) of the center switch (S1) and the movable electrodes (42) of the side switches (S2) are placed so as to overlap with each other in the thickness direction of the body (1), and hence the size of the body (1) can be reduced by a degree corresponding to the overlapping width (D).

Abstract: A motor (4) comprises a stator which generates a rotating magnetic field according to the energization of plural groups (A, B) of coils, and a rotor rotated by the rotating magnetic field of the stator. An inverter (3) comprises the same number of switching circuits (3A, 3B) as the number of groups which supply alternating current to the coils of the groups (A, B) according to the switching action of switching elements (SW1-SW6, SW7-SW12) of each of the switching circuits (3A, 3B), and a control unit (10) which controls the switching elements (SW1-SW6, SW7-SW12) so that the sum of the terminal voltages of the coils of each of the groups (A, B) is constant.

Abstract: A generating control device for a hybrid vehicle includes a motor 13 for driving the hybrid vehicle, a battery 12 for driving the motor, a generator 11 for supplying the motor 13 and the battery 12 with electricity, an engine 10 for driving the generator 11 and a control unit 16. In operation, the unit 16 operates to change the operations of the generator 11 and the engine 10 in both of the normal generating mode and the battery protection mode. Therefore, it is possible to reduce the deterioration of the battery 12 of the hybrid vehicle and to ensure the fine driving performance.

Abstract: There is disclosed a controller for an electric vehicle that allows for securing a sufficient battery capacity and is able to substantially avoid giving an uncomfortable feeling to the crew even if an engine for power generation is started. The controller comprises a power generation control unit which makes a generator of the electric vehicle generate electric power by starting a generator-driving engine of the electric vehicle in the case that an SOC (state of charge) of a battery of the electric vehicle is equal to or less than a first value, and further makes the generator generate the electric power by starting the generator-driving engine in the case that the SOC of the battery is equal to or less than a second value larger than the first value and a predetermined condition is satisfied. Further, an electric vehicle provided with such a controller is also disclosed.

Abstract: A battery management for a hybrid drive system for a vehicle recovers input and output performance of a battery if the battery temperature is low. If the battery temperature is less than or equal to a predetermined value (or if the battery internal resistance is greater than or equal to a predetermined value), the battery needs to recover its input and output performance. Under this condition, the state of charge (SOC) of the battery is determined and compared with a predetermined value. The comparison result is used to determine whether the battery is capable of discharging or the battery needs charging. If SOC is greater than or equal to the predetermined value, a controller conducts forced discharge from the battery to operate an electric motor of the hybrid drive system in power mode. This forced discharge causes an increase ion the battery temperature, thus causing the battery to recover its input and output performance.

Abstract: By calculating a fuel vapor quantity in a fuel tank based on a fuel temperature and a fuel residual quantity in the fuel tank, then calculating a fuel vapor purge quantity based on an engine revolution number and engine torque when an engine is driven, and then estimating a fuel vapor quantity captured in a vapor capturing unit based on the fuel vapor quantity and the fuel vapor purge quantity, the engine can be driven to purge the fuel vapor to the engine before the fuel vapor overflows the vapor capturing unit to thus be discharged into the air.

Abstract: A hybrid electric vehicle comprises an electric motor, a battery pack for the electric motor, a generator driven by an engine to provide electric power used for charging the battery pack, and a battery management for the battery pack. The battery management determines a current value of battery temperature (BT) of the battery pack and a current value of state of charge (SOC) within the battery pack. What are stored are a first set of varying SOC values and a second set of varying SOC values against varying BT values. The first set of varying SOC values are minimum SOC values required for the battery pack to produce a constant electric power output at varying BT values. The second set of varying SOC values are each indicative of an allowable upper limit to the quantity of electric charge that will accumulate in the battery pack due to operation of charging the battery pack with a constant electric power input at a corresponding BT value.

Abstract: A driving device controls a permanent-magnet synchronous motor having a permanent magnet in its rotor using a voltage-type inverter supplying drive power for the synchronous motor, makes the torque of the synchronous motor and the d-axis current flowing in the synchronous motor in the direction of the magnetic flux generated by the permanent magnet approach their own command values, and performs weakening field control by decreasing the d-axis current. To perform the above described control without complicated d-axis current command value operations or temperature amendments to motor constants, the driving device includes a proportional controller for outputting a d-axis signal proportional to the deviation between a d-axis current detection value and a d-axis current command value for the motor.

Abstract: A vacuum ionization gauging tube, particularly a Bayard-Alpert (B-A) type vacuum ionization gauging tube, has a firmly compact construction, and provides the capabilities for minimizing outgassing gases and measuring pressures accurately without affecting the ultimate pressure range. The B-A vacuum ionization gauging tube includes a filament having a total surface area of between 6 mm.sup.2 and 20 mm.sup.2, a grid formed like a coil from a 0.1 mm to 0.3 mm diameter metal wire, the coil having a diameter of 5 mm to 7 mm and a length of 15 mm to 20 mm and across which it can be energized, an ion collector electrode having substantially the same length as the filament, and a metal envelope for enclosing the above electrode elements and which is maintained at a potential lower than that of the filament. The grid coil has a winding pitch of between 1.5 mm and 2.5 mm. The filament and grid are spaced apart from each other by the distance of between 2 mm and 4 mm.

Abstract: A polygon dividing section divides a polygon which is stored in a polygon graphic data storage area into a number of triangles, with the associated vertex information being distributed among the triangles. In doing this, based on category information which indicates that separated triangles are first, intermediate, or last triangles of the polygon and also based on the edge numbers of the separated triangles, the polygon dividing section selects either edge data or divided edge data, the latter of which indicates an invisible edge, which are stored in the polygon graphic data storage area, and outputs the vertex data of the triangles along with either the edge data or divided edge data to a triangle set graphic data storage area. A triangle drawing section, based on the triangle vertex information stored in the triangle set graphic data storage area, draws the separate triangles on a display device.

Abstract: An electromagnetic braking apparatus for a continuous casting mold comprises a casting mold with a rectangular cross section including wide side walls and narrow end walls; electromagnets each of which comprises a core disposed along the side wall of the casting mold and a coil wound around the core for applying a magnetic field in the direction across the side walls of the casting mold; and a support frame for supporting a width changing device for changing the width of the casting mold and cooling boxes for cooling the casting mold, the support frame extending to surround the casting mold and the electromagnets and connected to the cores of the electromagnets to thereby form the magnetic path of the electromagnets.

Abstract: An electromagnetic brake device for a continuous casting mold. The mold has a rectangular cross section having long sides and short sides. The mold also includes water boxes adjacent at least the long sides. The electromagnetic brake device includes an electromagnet including magnetic poles which are provided respectively at the long sides of the casting mold and are disposed in opposed relation to each other. The magnetic poles have a width generally equal to a width of the long sides of the casting mold. Coils are wound on outer peripheries of the magnetic poles. An iron core is provided in surrounding relation to the casting mold, a portion of the iron core opposite each of the short sides of the casting mold extends through the water boxes located adjacent the long sides of the casting mold. The water boxes include openings through a surface into which the magnetic poles are adapted to be inserted. A backup plate is provided at a side of the water boxes located adjacent the mold.

Abstract: A high-reliability computer system is provided in which error correcting codes are preliminarily added to the signals to be applied to a voter from a plurality of computers by error correcting code encoders so that, even if an error resulting from a failure of the voter occurs, an error correcting code decoder can provide a correct result based on the error correcting codes, whereby a failure in the computers and error correcting code encoders can be avoided by means of the voter, a failure in the voter can be avoided by the error correcting code decoder, and a failure in the error correcting code decoder can be avoided by parallel redundancy arrangement.

Abstract: The present invention discloses a multiple switch using a rotary actuator comprising a stationary terminal block in which a plurality of stationary terminals are arranged, a movable terminal block in which a plurality of movable terminals are arranged for the elastic contact with the stationary terminals, an actuator incorporated into a body to be rotatable at a specified angle when an external force is applied by means of a plunger or the like and returning automatically to its original position by means of an elastic member when the external force is released, a first projection group having at least one projection mounted on the actuator pressing at least one movable terminal to separate the movable terminal from the stationary terminal, a second projection group having at least one projection mounted on the actuator releasing the pressure to at least one movable terminal to come in the elastic contact with the stationary terminal, an the on-off control thereof being carried out based on the principle of a