Mitsubishi Electric Corporation

Asahi Denka Kogyo Kabushiki Kaisha

Other

Hitachi, Ltd.

Ipflex Inc.

Sony Group Corporation

Stanley Electric Co., Ltd

Takata Corporation

Teijin Limited

Hitachi Industrial Equipment Systems Co., Ltd.

Adeka Corporation

Asahi Denka Kogyo K.k.

Okamoto Industries, Inc.

Soliton Systems K.k.

Fuji Xerox Co., Ltd.

Kenji Ikeda

Tatsuya Mori

Hiroko Ikeda

Masako Miyake

Seiji Sawada

Takashi Suzuki

Hisakazu Shiraki

Keiji Suzuki

Hiroshi Ichiki

Toshihiro Matsunaga

Kenta Kubo

Hiroshige Kohno

Yoshie Kurihara

Masaaki Kato

Tomoyoshi Sato

Hiroaki Kojima

Hiromu Sugiyama

Hisashi Morooka

Mitsuru Onoda

Yasuo Okutomi

Shohei Fujikura

Tsutomu Kono

Hirokazu Tatsuta

Makoto Yamagishi

Akinori Watanabe

Hirooki Tokoi

Motonobu Iizuka

Kazumasa Sato

Nobuaki Tanaka

Tetsuro Kuwayama

Mitsuharu Tanaka

Kodai Okazaki

Kazuhiro Uehara

Katsuhiko Sato

Kenta Motoyoshi

Tetsuji Kato

Hiroshi Shimura

Shoichi Maruyama

Teiyu Shimada

Naohiro Hiruta

Daisuke Kamegawa

Yoshinari Ogawa

Yasuaki Kageyama

Mizuki Nakahara

Hiroki Nakatsuchi

Satoshi Hamada

Takeyoshi Kakizaki

Masako Saito

Masahiko Orii

Kazuo Goto

Emi Takahashi

Noriyuki Akagi

Masaki Odawara

Kazuhisa Shinno

Motonobu Iiduka

Itaru Horiguchi

Atsushi Sato

Genzo Iwaki

Shumpei Yokota

Yosuke Sugino

Kengo Ueda

Zenro Ikezawa

Kazufumi Tsubaki

Kazunori Kikuchi

Tsuzumi Higashiyama

Yujiro Iwasaki

Tetsuya Shiozaki

Masako Saitoh

Fumiko Irie

Yoichi Nakamura

Daisuke Tsuru

Sakiko Hosozawa

Yuichiro Yoshitake

Shotaro Nishiki

Tomofumi Nakagawa

Yoshihiro Haraguchi

Shuzo Tashiro

Mikihiro Kaneko

The redundant resolver includes: a resolver body having a rotor, a stator opposed to the rotor and having Ns teeth arranged in a circumferential direction, and an excitation winding and two phases of output windings wound on the stator; an excitation circuit configured to supply power to the excitation winding; and an angle calculation unit configured to calculate a rotation angle on the basis of signals from the two phases of output windings. The stator is divided in the circumferential direction into M pieces which serve as M tooth blocks, N (M≥N) redundancy systems are formed on the basis of the M tooth blocks. The excitation circuit and the angle calculation unit are provided to each system so as be independent among the systems. Gap magnetic flux densities at both end portions of each tooth block are set to change mildly.

Redundant resolver and electric power steering device mounted therewith

Provided is an information processing apparatus that includes a separation unit that separates a fluorescence signal derived from a fluorescent reagent from a fluorescence image on the basis of the fluorescence image of a biological sample containing a cell, a reference spectrum derived from the biological sample or the fluorescent reagent, and morphological information of the cell.

Information processing apparatus and information processing system

Provided is a resolver capable of increasing an accuracy of a detected angle of the resolver. The resolver includes: a stator; and a rotor, wherein the rotor includes a plurality of salient poles; wherein the stator includes: a stator core having a plurality of teeth, and a plurality of winding groups each of which is provided on each of the plurality of teeth, wherein the winding groups are divided into two systems, wherein the numbers of turns of the excitation windings are distributed in a form of a sine wave of N-th spatial order, wherein each of the numbers of turns of a first output windings and the numbers of turns of a second output windings are distributed in a form of a sine wave of |N±N|-th spatial order, and wherein the following expressions are satisfied,cos{||(−1)/×2π+α},cos{||(−1)/×2π+β}, and90(deg)<|α−β|<140(deg).

Resolver and electric power steering device

A data generation method according to an embodiment includes: an imaging step (S) of capturing, for each of lines for scanning an imaging target, a plurality of fluorescence images generated by the imaging target for a respective plurality of fluorescence wavelengths and acquiring data of the captured plurality of fluorescence images in arrangement order of the lines and a rearrangement step (S) of changing the arrangement order of the data of the plurality of fluorescence images acquired in the imaging step from the arrangement order of the lines to arrangement order of for each of the plurality of fluorescence wavelengths.

Data generation method, fluorescence observation system, and information processing apparatus

A technology for efficiently discharging a bubble present in a fluid in a chamber is provided. There is provided a bubble discharging method carried out in a chamber including a microchip that includes at least one well or through hole to divide a space into a first space and a second space, the bubble discharging method including a pressurizing step of applying a positive pressure to a fluid in the chamber, and a valve opening/closing step of operating a valve for opening/closing a first flow path connected to the first space and/or a second flow path connected to the second space.

Bubble discharging method, particle trapping apparatus, and particle analyzing apparatus

A power conversion device capable of shortening the time required for acceleration of a motor and a metal processing device including the power conversion device are provided. Then, a power conversion deviceincludes a converterconfigured to convert an AC voltage from outside to a DC voltage Vo and a converter controllerconfigured to control the converter. The converterincludes a voltage doubler circuitconfigured to boost the DC voltage Vo when activated, and outputs the DC voltage Vo having a voltage value different in accordance with the activation and stop of the voltage doubler circuit. The converter controlleractivates the voltage doubler circuitat a first time that is earlier by a predetermined period than a second time at which a speed command value ω* of the motorrises from a predetermined value.

Power conversion device and metal processing device

To provide an abnormality detection apparatus for resolver which can determine the abnormality of at least the first system, even if the period of the excitation AC voltage of the first system and the period of the excitation AC voltage of the second system are different periods, and the magnetic interference between systems occurs. An abnormality detection apparatus for resolver applies an AC voltage of a first period to a first system excitation winding; applies an AC voltage of a second period different from the first period to a second system excitation winding; calculates a first system square sum which is a sum of square values of the detection values of output signals of first system two output windings after the second period component reduction processing: and determines abnormality of first system based on whether or not the first system square sum is within a normal range of first system.

Abnormality detection apparatus for resolver

A resolver body including a rotor having Nx (Nx is a natural number) salient poles, a stator facing the rotor and having Ns (Ns is an integer equal to or larger than 3) teeth arranged in a circumferential direction, and an excitation winding and two phases of output windings wound on each tooth; and an excitation circuit configured to apply voltage to the excitation winding. The excitation winding and the two phases of output windings wound on each of Nsm (Nsm is an integer equal to or larger than 2) teeth among the Ns teeth are set to be of a main system. The excitation winding and the two phases of output windings wound on each of Ns-Nsm teeth are set to be of a sub-system. The number Nsm of the teeth corresponding to the main system is larger than the number Ns-Nsm of the teeth corresponding to the sub-system.

Redundant resolver and electric power steering device equipped with redundant resolver

To solve a problem that the accuracy of angle detection deteriorates owing to noise voltage generated by eccentricity or variation in shape among rotors according to the number of magnetic poles of a rotor core of a multiple-system rotation sensor, the number S of magnetic poles of a stator core is, with the number R of the magnetic poles of the rotor core and the number N (N is a natural number equal to or larger than 2) of systems for stator windings, in a relationship of S=nRN (n is a natural number), system windings of each system are wound so as to be divided for every R magnetic poles among the S magnetic poles of the stator core, and a winding arrangement of the system windings of each system is made so as to achieve R-times rotational symmetry about a rotor rotation axis.

Multiple-system rotation sensor, and electric power steering device provided with multiple-system rotation sensor

To provide an abnormality detection apparatus for resolver which can determine the abnormality of at least the first system, even if the period of the excitation AC voltage of the first system and the period of the excitation AC voltage of the second system are different periods, and the magnetic interference between systems occurs. An abnormality detection apparatus for resolver applies an AC voltage of a first period to a first system excitation winding; applies an AC voltage of a second period different from the first period to a second system excitation winding; calculates DC values of first system two output signals by performing a DC extraction processing; and determines abnormality of first system based on whether or not the DC values of first system two output signals are within a normal range.

In an electric motor control device which controls rotation of an AC electric motor having two sets of three-phase windings and provided with a resolver having two systems by calculating voltage command values on dq axes, dq conversion of currents of first three-phase windings is performed using a first angle calculated from output of the first system of the resolver, and dq conversion of currents of second three-phase windings is performed using a second angle calculated from output of the second system of the resolver. With both d-axis current command values set at the same value, respective voltage command values on dq axes are calculated and respectively converted into voltage command values for voltage application to the first three-phase windings, using the first angle, and converted into voltage command values for voltage application to the second three-phase windings, using the second angle.

Electric motor control device

A resolver device with redundancy, wherein winding groups of different systems are arranged at different positions in a circumferential direction of a stator core. The winding groups of each system include: an excitation winding group consisting of a plurality of excitation windings, each of which is connected to a corresponding one of plural excitation circuits; and a first output winding group; and a second output winding group. Each of the stator teeth has a corresponding one of the excitation windings wound therearound. When two of the excitation windings belonging to different systems, arranged side by side in the circumferential direction of the stator core, are defined as a first end excitation winding and a second end excitation winding, respectively, the first end excitation winding and the second end excitation winding are supplied with excitation signals which generate magnetic fluxes in the same (not opposite) radial directions of the stator core.

Redundancy resolver device and electric power steering device

A light emitting device includes a semiconductor light emitting element which emits excitation light having a peak wavelength in a range of 440 to 450 nm and a fluorescent body layer which is provided on the semiconductor light emitting element, is excited by the excitation light from the semiconductor light emitting element, and contains a first fluorescent body and a second fluorescent body which emit first fluorescent light and second fluorescent light. The first fluorescent light has a peak wavelength in a range of 540 to 575 nm, and the second fluorescent light has a peak wavelength in a range of 590 to 605 nm. In mixed color light of the radiation light, the intensity of the radiation light of the semiconductor light emitting element is 1/10 to 1/60 of the intensity of the combined light of the radiation light from the first fluorescent body and the second fluorescent body.

Semiconductor light emitting device and semiconductor light emitting module

Even using the redundant system resolver in which the magnetic interference between systems occurs, to provide an angle detection apparatus which can reduces the influence of the magnetic interference and can calculate the rotational angle with good accuracy, without performing synchronous control between systems in real time. An angle detection apparatus is provided with a resolver which has the first system windings and the second system windings in which magnetic interference occurs between systems; a first system removal processing unit that performs a second cycle component removal processing which removes component of the second cycle of the second system, to detection values of the first system winding output signals; and a first system angle calculation unit that calculates a first angle of rotor, based on the detection values of the first system winding output signals after the second cycle component removal processing.

Angle detection apparatus

To provide an AC rotary machine apparatus which can determine the operation stop of the control circuit of the other system with good accuracy. An AC rotary machine apparatus, including: a resolver is provided with a first system excitation winding, first system two output windings, a second system excitation winding, and second system two output windings, in which a magnetic interference occurs between a first system and a second system; a first system control circuit that applies AC voltage with a first period to the first system excitation winding; and a second system control circuit that applies AC voltage with a second period to the second system excitation winding, wherein the first system control circuit determines whether the operation of the second system control circuit stops, based on the components of the second period extracted from the first system output signals.

AC rotary machine apparatus

Growing community of inventors

Tokyo, Japan

Kenji Ikeda