Fuji Electric Co., Ltd.

Konami Digital Entertainment Co., Ltd.

Unicharm Corporation

Nittan Valve Co., Ltd.

Shinichi Ishii

Hirokazu Tajima

Hiroshi Miki

Hidetoshi Umida

Takashi Aihara

Takao Yanase

Yosuke Sasaki

Tomoaki Hirai

Emiko Miyaji

Hiroshi Takahashi

Makoto Ando

Yukio Kubota

Junichi Ito

Kazuhiro Kusuda

Takashi Nakanishi

Hirofumi Minowa

Masaru Yamazoe

Yaku Hiranabe

Hirokatsu Yamaguchi

Yukihiro Osaki

Makato Ando

Yaku Hiranbe

Jiro Toyozaki

Nobuya Koujitani

The present invention provides a DLC (diamond like carbon) film coating and a coated valve lifter, wherein the DLC film coating can be formed at a film forming rate comparable with that achieved in the case of forming the DLC coating film by the CVD (chemical vapor deposition) method and has good durability comparable with that obtained in the case of forming the DLC film coating by the sputtering film forming method. The DLC film coating includes an intermediate layerdeposited on the surface of a base substrate and a DLC layerdeposited on the intermediate layer. The intermediate layeris formed of metal carbide or metal capable of forming a hard surface and the DLC layeris formed by adding a common metal element to that contained in the intermediate layerthereto while inert gas containing hydrocarbon gas is being introduced. As a result, the intermediate layerand the DLC layercan be formed by sequential sputtering processing and in addition, an H (hydrogen) content contained in the DLC layercan be adjusted by forming a Me-DLC (metal addition DLC) layer as a DLC layer

DLC film coating and coated valve lifter

After the offensive selection element images are moved along the joining direction to the offensive selection image display area () and displayed one after another in an alternating manner thereon, based on the control of the offensive selector (), the images are halted and displayed in a matrix-wise arrangement. The character property () and physical strength value () are stored in association with the character, and the character corresponding to a physical strength value () equal to or lower than a predetermined final value is determined to be the loser, the physical strength value of the attacked character being calculated using the offensive value and a formula corresponding to the character property and the offensive type. Furthermore, the image of the character determined to be the loser by the winner/loser determinator () is varied.

Multiplayer competition game device, game machine and game program

An aspect of the invention provides a game machine including: a second game chance control device that generates at least one game chance that is allowed to establish a predetermined winning condition in a game within a predetermined range provided to a player in exchange for a game value; a symbol arrangement control device that determines types of symbols to be arranged on a predetermined area on a game screen with a predetermined positional relationship according to the generation of the game chance; and a first winning determining device that determines whether the winning condition is established based on the types and the arrangement of the symbols arranged on the predetermined area.

Game machine and computer program thereof

A game machine having a control unit as a first game chance control device generating a game chance achieving at least one winning combination in winning combinations whose achievement probability varies in a game within a predetermined range provided to the player in exchange for medals, a dividend value control device setting a correspondence relationship between the winning combinations and the dividend values for the player, a dividend display control device displaying an odds display section where the winning combinations are related with the dividend values on a monitor according to the correspondence relationship set by the dividend value control device, a dividend creating device generating the dividend for the player corresponding to the achieved winning combination according to the correspondence relationship set by the dividend value control device when any winning combination is achieved, and a condition determining device determining whether a predetermined dividend change condition is established within the predetermined range.

It is an object of the invention to make a single article storage display capable of fully showing performance or an appealing point to consumers. A portion of a sample packing cover member, in which a part of a sanitary napkin to be brought into contact with a wearer faces the portion while the napkin is housed in the cover member, is made transparent. The transparent portion is given curvatures in both longitudinal and lateral directions such that a contour of the transparent portion faithfully follows a contour of the sanitary napkin, thereby making it easy for a user to ascertain the contour of the sanitary napkin.

Sample packing cover body for single article storage display for sales promotion purpose

The present invention provides a variable-speed controlling device for use with an induction motor, which includes a means for compensating for the discrepancy between a secondary magnetic flux instruction value and a secondary magnetic flux actually occurring in an induction motor, realizes a satisfactory control by generating the secondary magnetic flux according to the instruction value, and can generate desired torque and improve a motor efficiency. The variable-speed controlling device according to the present invention, for use with an induction motor, includes a voltage instruction value calculating unit, an integrating unit, a power converting circuit, a current detecting unit, an induced voltage calculating unit, a position discrepancy amount calculating unit, and a compensating unit.

Variable-speed controlling device for use with an induction motor

The apparatus calculates a torque that an induction motor generates while considering an iron loss even in a boosting state for exceeding the rated excitation. The calculation is based on a reference voltage value fed to an inverter for driving the induction motor, a q-axis current component and a d-axis current component resolved from a detected current of the induction motor on a rotating coordinate system, a primary resistance of the induction motor and a primary angular frequency. The apparatus includes an iron loss calculator that calculates the iron loss of the induction motor based on hysteresis characteristics of the stator core, a divider that divides the calculated iron loss by the primary angular frequency and an adder that calculates the generated torque by subtracting the result of the division from the torque calculated without considering the iron loss.

Apparatus for calculating torque generated by induction motor

A PWM power converter is provided which includes an adder that adds a high-frequency signal from a high-frequency generator to a voltage command signal, and a PWM generator of carrier comparison type or space vector type that generates a PWM signal based on the output of the adder, which PWM signal is used for driving switching devices to provide a desired output voltage.

PWM power converter

A control apparatus for an induction motor includes a current detector for detecting the current of the induction motor; a first coordinate transformer for resolving the current into an exciting current component and a load current component; a slip value calculator for calculating a slip angular frequency of the induction motor based on the load current component; a correction value calculator for calculating a correction value for the slip angular frequency of the induction motor in response to the change of the exciting current component; a multiplier for correcting the slip angular frequency by using the correction value calculated in the correction value calculator; an adder for calculating a reference primary angular frequency based on the corrected slip angular frequency; a voltage vector calculator for calculating a reference voltage value based on the reference primary angular frequency; and a second coordinate transformer for feeding the calculated reference voltage value to the inverter. The control apparatus keeps the rotating speed of the induction motor at a predetermined value when the slip frequency change occurs due to temperature rise in the induction motor.

Speed control apparatus for induction motor

An ac/dc converting circuit adapted to output a direct voltage that is higher than a full wave rectified voltage of an alternating input voltage is provided which includes an alternating current filter, and a condenser with a positive electrode and a negative electrode coupled to a dc output side of a full wave rectifying circuit. The full wave rectifying circuit includes a switching portion having upper and lower arms each having a semiconductor rectifying element and a self-commutated semiconductor switching element, and a rectifying portion having upper and lower arms each having a semiconductor rectifying element. The semiconductor rectifying elements in the upper arms of the full wave rectifying circuit has a common cathode coupled to the positive electrode, and the semiconductor rectifying elements in the lower arms has a common anode coupled to the negative electrode. The ac/dc converting circuit further includes a resistor provided between a coupling point of the rectifying elements of the upper arms of the full wave rectifying circuit and the negative electrode. In operation, a signal for controlling an ON/OFF state of the switching element of the lower arm of the switching portion is generated while the switching element of its upper arm is in an OFF state, when the direct output voltage is higher than the input alternating voltage, and a voltage at an ac input terminal between the rectifying elements of the switching portion is lower than a voltage at an ac input terminal between the rectifying elements of the rectifying portion.

AC/DC converting circuit

An ac/dc converting circuit adapted to output a direct voltage that is higher than a full wave rectified voltage of an alternating input voltage is provided which includes an alternating current filter, and a condenser with a positive electrode and a negative electrode coupled to a dc output side of a full wave rectifying circuit. The full wave rectifying circuit includes a switching portion having upper and lower arms each having a semiconductor rectifying element and a self-commutated semiconductor switching element, and a rectifying portion having upper and lower arms each having a semiconductor rectifying element. The semiconductor rectifying elements in the upper arms of the full wave rectifying circuit has a common cathode coupled to the positive electrode, and the semiconductor rectifying elements in the lower arms has a common anode coupled to the negative electrode. The ac/dc converting circuit further includes a resistor provided between a coupling point of the rectifying elements of the upper arms of the fill wave rectifying circuit and the negative electrode. In operation, a signal for controlling an ON/OFF state of the switching element of the lower arm of the switching portion is generated while the switching element of its upper arm is in an OFF state, when the direct output voltage is higher than the input alternating voltage, and a voltage at an ac input terminal between the rectifying elements of the switching portion is lower than a voltage at an ac input terminal between the rectifying elements of the rectifying portion.

Ac/dc converting circuit

A driving circuit for driving an IGBT includes a forward-bias power supply, a reverse-bias power supply, a forward-bias semiconductor switch, a reverse-bias semiconductor switch, a first resistor for limiting forward-bias current, and a second resistor for limiting reverse-bias current. In this driving circuit, one terminal of a capacitor is connected to a common node of the resistor for limiting forward-bias current, the resistor for limiting reverse-bias current, and a gate of the IGBT. A mode switching semiconductor switch is connected at one terminal to the other terminal of the capacitor. The other terminal of the mode switching semiconductor switch is connected to a common node of the forward-bias power supply and the reverse-bias power supply. In operation, the mode switching semiconductor switch is turned on and turned off so as to establish a given rate of change of voltage which is independently selected for turn-on and turn-off of the IGBT.

Driving circuit for IGBT

An output voltage control apparatus for performing feedback control on an output voltage of an inverter which drives an AC machine. The output voltage control apparatus converts a command value for the output voltage of the inverter into a pulse density using a converter (PDM), and converts a detection value of the output voltage of the inverter into a pulse density using a .DELTA.-.SIGMA. modulation converter. The proportional control ability and integral control ability for the output voltage are realized by digital hardware including an up-counter, a down-counter and a shift circuit.

Voltage control with feedback utilizing analog and digital control

An AC-DC converter includes an adjusting unit 13 which operates to zero the difference between a DC output voltage instruction value and a DC output voltage detection value; and a modulator 16 which compares a carrier wave based on an output signal of the adjusting unit 13 with a modulating wave to output drive pulses, a switching element 3 is turned on and off with the drive pulses to provide a DC output voltage which is higher than a full-wave rectification voltage of an AC input voltage. In order to obtain the carrier wave, the AC-DC comprises further includes an AC input voltage polarity detector 7, a PLL circuit 11, and a multiplier 14 for multiplying the sine wave by an output signal of the adjusting unit 13.

AC-DC converter

A control circuit for controlling a power converting apparatus, maintaining a stable operation of an induction motor. The control circuit includes an exciting current obtaining circuit which obtains the exciting current component from a detected signal of primary currents of the induction motor, a circuit which obtains an exciting current oscillation component from the exciting current correlate, a circuit which obtains correcting quantity from the exciting current oscillation component, and circuits which correct the voltage command or the flux command by the correcting quantity, and provide it to the power converting apparatus as stator axis voltage command values.

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Tokyo, Japan

Shinichi Ishii