Abstract: An elevator includes a car that ascends and descends in an elevation path, and at least one airflow generation device that is set on a surface of a top end part of at least one of upper and lower end parts of the car, the surface facing a platform of the elevation path, and suppresses a separation flow generated at the top end of the car during running, thereby to generate an airflow for rectifying an airflow flowing into a front side of the car.

Abstract: A totally enclosed type main drive motor for a vehicle includes a stator core arranged on an inner circumference of an outer casing frame, a bracket arranged on one end of the outer casing frame to have a bearing built-in, a housing arranged on the other end of the outer casing frame to have a bearing built-in, a rotor shaft having its both ends supported by the respective bearings, a rotor core arranged on the rotor shaft, a fan arranged on one end of the rotor shaft, openings formed in both axial ends of a peripheral wall of the outer casing frame, connective air ducts arranged outside the peripheral wall so as to communicate with the openings and a cooler for connecting these connective air ducts with each other and also releasing heat of air flowing in the connective air ducts to outside air. The outer casing frame is attached to the vehicle so that a central axis of the outer casing frame extends horizontally and intersects with a traveling direction of the vehicle at right angles.

Abstract: A behavioral synthesis system which synthesizes behavior without inline expansion of a callee function, even one which has a pointer as an argument during the synthesis of a caller function. There is also a language analyzer that analyzes the behavior level description for conversion into an internal representation for behavioral synthesis and one which represents a correspondence relationship between a pointer variable and a circuit entity. There is also a pointer-terminal converter that converts a pointer into a set of a terminal and condition in the internal representation generated by the language analyzer. Further, there is a behavioral synthesizer that processes the internal representation from which the pointer variable has been removed by the pointer terminal converter to generate a circuit description at low abstractness.

Abstract: A behavioral synthesis system has a scheduling unit and a mode control unit. The scheduling unit performs scheduling of a behavioral level description with reference to a resource quantity data indicating resource constraint and a resource delay data indicating delay times of respective resources. A single process described in the behavioral level description is divided into a plurality of description blocks, and a scheduling mode among a plurality of scheduling modes is designated with respect to each of the plurality of description block. The mode control unit refers to a mode designation code that indicates the designated scheduling mode and controls such that the scheduling unit performs the scheduling with respect to each description block in accordance with the designated scheduling mode indicated by the mode designation code.

Abstract: A motor drive system 10-1 for a railway vehicle is capable of reducing the weight of wiring, electromagnetic noise, and manufacturing cost. The motor drive system includes an inverter 11. The inverter is configured to control a motor 13-1 and is divided into at least two separate inverter units that are arranged integrally with the motor.

Abstract: A totally enclosed type main drive motor for a vehicle includes a stator core arranged on an inner circumference of an outer casing frame, a bracket arranged on one end of the outer casing frame to have a bearing built-in, a housing arranged on the other end of the outer casing frame to have a bearing built-in, a rotor shaft having its both ends supported by the respective bearings, a rotor core arranged on the rotor shaft, a fan arranged on one end of the rotor shaft, openings formed in both axial ends of a peripheral wall of the outer casing frame, connective air ducts arranged outside the peripheral wall so as to communicate with the openings and a cooler for connecting these connective air ducts with each other and also releasing heat of air flowing in the connective air ducts to outside air. The outer casing frame is attached to the vehicle so that a central axis of the outer casing frame extends horizontally and intersects with a traveling direction of the vehicle at right angles.

Abstract: To provide an electric rolling stock driving apparatus allowing for an enhanced reliability of rolling stock system, a main motor 14 for driving an electric rolling stock, a VVVF inverter 13 for driving the main motor, and a brake controller 12 for controlling braking forces of wheels 16 are provided within a driving truck 9, allowing for an improvement in reliability of a rolling stock system that otherwise might have deficiencies such as an increased rolling stock manufacture term or an increased trouble restoration time by a complicated implementation of wiring due to an arrangement according to a relevant art in which, for driving a rolling stock, associated apparatuses are separately mounted to a car body and a truck.

Abstract: A controller-integrated motor includes a motor main body and a controller integrated with the motor main body to control the motor main body, the motor main body, including a stator core, a shaft which rotates to exert driving force on the motor main body, a frame which holds the stator core and the shaft, and an outer fan provided around the shaft so that the motor main body is recessed inward toward a rotational center of the shaft, the outer fan discharging cooling air stream to cool the motor main body, the controller being provided in proximity to an outer periphery of the frame, the motor main body being formed so that a cooling air stream from the outer fan flows in an axial direction of the shaft along an outer peripheral surface of the frame.

Abstract: The main body of a rotary electrical machine is accommodated in a frame (1). A circulatory device (5) is provided that is rotated by a rotor (3) of said rotary electrical machine, in which there is accommodated cooling liquid (7) that cools at least the main body of the rotary electrical machine. The circulatory device (5) circulates said cooling liquid (7) to outside of the frame (1) by pump action. The cooling liquid (7) is accumulated by a reserve tank before being circulated within the frame (1). After the heated cooling liquid (7) is cooled in the reserve tank, this accumulated cooling liquid (7) is then caused to flow back into the frame (1) by the pressure difference.

Abstract: The present invention is intended to realize a behavioral synthesis system which can synthesize behavioral without inline-expanding a callee function even if a pointer is passed to the callee function during a behavioral synthesis of a caller function.

Abstract: The present invention relates to a clock control circuit apparatus including a first oscillation circuit for generating a first clock signal and a second oscillation circuit for generating a second clock signal and capable of, when the two clock signals are put to use, improving the reliability of oscillation operations thereof. In the clock control circuit apparatus, a sub-clock correction unit corrects an oscillation frequency of a sub-clock signal on the basis of a main clock signal, while a main clock monitoring unit monitors an oscillation state of the main clock signal on the basis of the sub-clock signal.

Abstract: A stator frame (1) comprises: a housing (1m) whereof a modified tubular body mounted on the outer peripheral surface of a stator core (2) and that is virtually recessed at two locations in the direction of the rotary axis of a rotor; a cooling section (1n) that is integrally formed with one recess of this housing (1m) and wherein a passage (23) for the airflow generated by a circulating fan (11) is formed by forming a prescribed gap with respect to the outer peripheral surface of the stator core (2) and comprising heat-radiating fins (21); a foot (1o) that is integrally formed with another recess of this housing (1m) and wherein a passage (24) for the airflow generated by the circulating fan (11) is formed by forming a prescribed gap with respect to the outer peripheral surface of the stator core (2) and comprising heat-radiating fins (22); and a mounting section (1p).

Abstract: In the clamp circuit, the first transistor shifts a target clamp voltage by a gate-source voltage to output the target clamp voltage. The buffer circuit inputs the shifted voltage and output a reference voltage on the inputted shifted voltage. The gate of the second transistor is connected to the output terminal of the buffer circuit. The source of the second transistor is connected to the input terminal of the first transistor. In this structure, the reference voltage is supplied to the gate of the second transistor so that, when a terminal voltage of the input terminal of the IC is not less than a clamp voltage corresponding to the sum of the reference voltage and a threshold voltage of the second transistor, the second transistor turns on, whereby the terminal voltage is clamped to a clamp voltage related to the target clamp voltage.

Abstract: The present invention relates to a clock control circuit apparatus including a first oscillation circuit for generating a first clock signal and a second oscillation circuit for generating a second clock signal and capable of, when the two clock signals are put to use, improving the reliability of oscillation operations thereof. In the clock control circuit apparatus, a sub-clock correction unit corrects an oscillation frequency of a sub-clock signal on the basis of a main clock signal, while a main clock monitoring unit monitors an oscillation state of the main clock signal on the basis of the sub-clock signal.

Abstract: The clamp circuit clamps an input voltage at prescribed higher and lower clamp voltages which are stabilized under a temperature fluctuation. Transistors Q12 and Q14 are switched on in their linear region. In a lower voltage clamp circuit 18, an Vin detecting circuit 20 outputs Va1 by level-shifting Vin by Q13 and voltage-divides by series resistance circuit 23 the level-shifted Vin, while a reference voltage generating circuit 21 outputs Vr1 by level-shifting 0 V by Q15 and voltage-divides by series resistance circuit 25 the level-shifted voltage. Q11 is switched on, when a comparator 22 determines that Va1 descends and goes across Vr1. Here, Q12 is of the same characteristics as Q14, while Q13is of the same characteristics as Q15. Further, the resistance of the circuits 23 is the same as that of the circuit 25. The higher voltage clamp circuit 19 is similar to the circuit 18.

Abstract: The clamp circuit clamps an input voltage at prescribed higher and lower clamp voltages which are stabilized under a temperature fluctuation. Transistors Q12 and Q14 are switched on in their linear region. In a lower voltage clamp circuit 18, an Vin detecting circuit 20 outputs Va1 by level-shifting Vin by Q13 and voltage-divides by series resistance circuit 23 the level-shifted Vin, while a reference voltage generating circuit 21 outputs Vr1 by level-shifting 0 V by Q15 and voltage-divides by series resistance circuit 25 the level-shifted voltage. Q11 is switched on, when a comparator 22 determines that Va1 descends and goes across Vr1. Here, Q12 is of the same characteristics as Q14, while Q13 is of the same characteristics as Q15. Further, the resistance of the circuits 23 is the same as that of the circuit 25. The higher voltage clamp circuit 19 is similar to the circuit 18.

Abstract: In the clamp circuit, the first transistor shifts a target clamp voltage by a gate-source voltage to output the target clamp voltage. The buffer circuit inputs the shifted voltage and output a reference voltage on the inputted shifted voltage. The gate of the second transistor is connected to the output terminal of the buffer circuit. The source of the second transistor is connected to the input terminal of the first transistor. In this structure, the reference voltage is supplied to the gate of the second transistor so that, when a terminal voltage of the input terminal of the IC is not less than a clamp voltage corresponding to the sum of the reference voltage and a threshold voltage of the second transistor, the second transistor turns on, whereby the terminal voltage is clamped to a clamp voltage related to the target clamp voltage.

Abstract: An impeller used for cooling a dynamoelectric machine such as electric motors includes a disk and a plurality of blades arranged on the disk in a circle at unequal spaces so that a position angle .theta.n of an n-th blade is met by an equation:.theta.n=.theta.n0+.theta.max.times.sin {2.pi..times.m.times.(n-1)/Z}where Z is the number of the blades, .theta.n0 is a position angle defining a position of the n-th blade when the blades the number of which is shown by Z are arranged on the disk at equal spaces where 1.ltoreq.n.ltoreq.Z, .theta.max is a maximum allowable angular difference, and m is a degree of a rotational frequency and takes any integer from 1 to Z-1.

Abstract: A lever support device for a clutch cover assembly is disclosed, and includes a lever support 16 having a threaded portion 16a at its end portion, a support nut 17 engaged with the threaded portion 16a of the lever support 16 and fitted with the clutch cover 11, a lock plate 18 having an engagement portion 18a engaged with the outer periphery of the support nut 17, at least one oblong mounting aperture 18b in the lock plate 18 which inhibits rotation of the support nut 17, and a fixing member 19 inserted into the mounting aperture 18b in the lock plate 18 with a space 30 for rotation of the lock plate therebetween.

Abstract: The present invention relates to a pressure plate 12 that is formed with a plurality of protrusions 12a. The amount of the imbalance in the pressure plate 12 is measured, the imbalance is then corrected by machining the protrusions 12a in accordance with the amount of determined imbalance.