Patents by Inventor Takashi Iwasaki

Takashi Iwasaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9274514
    Abstract: A motor control apparatus includes a reference model unit configured to generate a model output, a feedback unit configured to generate a feedback, and an adder configured to add up the model input and the feedback and generate a control input to the controlled object. The reference model unit includes a storing unit configured to retain, as a vector, a present value of the target value and one or a plurality of past values of the target value, a numerical model configured to simulate a characteristic of the controlled object and generate the model output and a state variable on the basis of the model input, a model controller configured to generate the model input and a controller determining unit configured to determine the model controller.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: March 1, 2016
    Assignees: Mitsubishi Electric Corporation, Tokyo Institute of Technology
    Inventors: Yuji Igarashi, Hidetoshi Ikeda, Takashi Iwasaki, Takeshi Hatanaka, Masayuki Fujita
  • Publication number: 20160056755
    Abstract: This photovoltaic system includes: a support portion; a photovoltaic panel supported by the support portion so as to be able to take an orientation at any angle in each of azimuth and elevation; a drive device configured to change the orientation of the photovoltaic panel; and a control device configured to cause, during power generation, the drive device to drive the photovoltaic panel such that sun light hits the photovoltaic panel, the control device configured to, when executing a cleaning mode, control the drive device such that the photovoltaic panel takes an orientation that facilitates removal of attached substance to a light receiving surface of the photovoltaic panel by use of at least one of natural phenomena including rain, wind, dew condensation, and gravity.
    Type: Application
    Filed: August 20, 2015
    Publication date: February 25, 2016
    Inventors: Yoshiya ABIKO, Youichi NAGAI, Takashi IWASAKI, Rui MIKAMI, Kazumasa TOYA
  • Patent number: 9254862
    Abstract: Provided is a control device for an electric power steering device, the control device configured to control an output torque of a motor that provides an assist torque to a steering torque, the output being controlled based on a steering-torque signal from a torque sensor that detects a steering torque, the control device controls the output torque using a correction signal to damp a vibration at a natural frequency determined in accordance with a transfer characteristic from the steering-torque signal to the output torque.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: February 9, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Isao Kezobo, Yoshihiko Kimpara, Takayuki Kifuku, Tatsuya Mori, Takashi Iwasaki, Masashi Iwane, Yuji Takatsuka
  • Publication number: 20160013337
    Abstract: A photovoltaic module includes: a flexible printed circuit; and a plurality of power generating elements mounted on the flexible printed circuit, wherein the flexible printed circuit includes a turning portion, and strip-shaped portions of the flexible printed circuit which are located on opposite sides of the turning portion are aligned so as to oppose each other.
    Type: Application
    Filed: July 9, 2015
    Publication date: January 14, 2016
    Inventors: Kazumasa Toya, Takashi Iwasaki, Youichi Nagai, Koji Mori, Kenji Saito, Rui Mikami
  • Patent number: 9207654
    Abstract: A servo controller is provided. The servo controller includes a reference model unit which inputs a reference to generate a model output and a model input; a feedback control unit which generates a feedback input so that a control output of a plant follows the model output; and an adder which adds the model input and the feedback input. The reference model unit includes a mathematical model which simulates characteristics of the plant, and generates the model output and a state variable from the model input; a model input memory which outputs a past model input; a model controller which inputs the reference, the state variable, and the past model input to generate the model input; and a model controller determining unit which determines the model controller based on the reference, the state variable, and the past model input.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: December 8, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuji Igarashi, Hidetoshi Ikeda, Kiyoshi Maekawa, Takashi Iwasaki
  • Publication number: 20150340988
    Abstract: This concentrator photovoltaic system includes: a concentrator photovoltaic panel; a driving device configured to cause the concentrator photovoltaic panel to perform periodical tracking operation with respect to the sun in two axes of azimuth and elevation; a measurement section configured to detect generated power or generated current as an amount of generated electricity of the concentrator photovoltaic panel; and a control section configured to obtain, when the driving device has caused the concentrator photovoltaic panel to perform tracking operation in either one of the two axes, a change in the amount of generated electricity of the concentrator photovoltaic panel before and after the tracking operation, the control section configured to determine presence/absence of tracking deviation that should be corrected, based on the change.
    Type: Application
    Filed: May 20, 2015
    Publication date: November 26, 2015
    Inventors: Shinjirou SHINADA, Seiji YAMAMOTO, Naoki AYAI, Takashi IWASAKI, Hideaki NAKAHATA
  • Patent number: 9152143
    Abstract: Automatic programming apparatus includes: a material shape data input unit that receives input of data of material shape; a processing program storage unit that stores therein data of material shape and processed unit data; a processed unit data input part that receives an input of other-processed-unit-reference-type processed unit data referencing processed region shape data contained in the processed unit data; a processed region shape generating unit that generates processed region shape data in the processed unit data for partial processing, based on data of material shape and processed region shape data referenced by other-processed-unit-reference-type processed unit data; and a control command generating unit that generates control command data, based on processed unit data for partial processing containing processed region shape data.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: October 6, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenji Iriguchi, Yuka Mitani, Akira Miyata, Tomonori Sato, Susumu Matsubara, Takashi Iwasaki
  • Publication number: 20150270418
    Abstract: Provided is a solar cell for which accurate mutual alignment between a condenser lens and a power generating element corresponding thereto can be performed. In a solar cell 23, a plurality of grid electrodes 31 each formed in a linear shape are arrayed on a light receiving surface 23a along the width direction of the light receiving surface 23a. The plurality of grid electrodes 31 include a first center grid electrode 31a forming a cross portion 34 exhibiting a center-specific geometry caused by electrodes crossing each other at the center of the light receiving surface 23a.
    Type: Application
    Filed: February 11, 2015
    Publication date: September 24, 2015
    Inventors: Makoto INAGAKI, Kenji SAITO, Yoshiya ABIKO, Koji MORI, Takashi IWASAKI, Yoshiki KUHARA
  • Publication number: 20150255655
    Abstract: A flexible printed wiring board includes a first strip-shaped member and a second strip-shaped member each including a conductive part and an insulating part covering the conductive part; and a first connecting member including a conductive part and an insulating part covering the conductive part, the first connecting member connecting a first end of the first strip-shaped member and a first end of the second strip-shaped member to each other. The conductive parts of the first strip-shaped member, the second strip-shaped member, and the first connecting member are continuous with each other. The first strip-shaped member and the second strip-shaped member are capable of being linearly arranged when the first connecting member is bent and the first end of the first strip-shaped member and the first end of the second strip-shaped member face each other.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Inventors: Koji Mori, Takashi Iwasaki, Youichi Nagai, Yoshiya Abiko, Rui Mikami, Kenji Saito, Makoto Inagaki
  • Publication number: 20150243797
    Abstract: A concentrator photovoltaic module 1M includes a vessel-shaped housing 11 composed of a metal and a flexible printed wiring board 12 provided so as to be in contact with an inner surface of the housing 11. The flexible printed wiring board 12 includes an insulating layer 124, an insulating substrate 121a, a pattern 121b, a plurality of power generation elements 122, and an insulting layer 126. The insulating layer 124 is in contact with a bottom surface 11a of the housing 11. The insulating substrate 121a is provided on the insulating layer 124 and has flexibility. The pattern 121b is composed of a conductor and is provided on the insulating substrate 121a. The plurality of power generation elements 122 are mounted on the pattern 121b. The insulating layer 126 is provided so as to cover an entire surface of the pattern 121b except for portions where the power generation elements 122 are mounted.
    Type: Application
    Filed: March 12, 2014
    Publication date: August 27, 2015
    Inventors: Youichi Nagai, Takashi Iwasaki, Kazumasa Toya, Kenji Saito, Kenichi Hirotsu, Hideaki Nakahata
  • Publication number: 20150243821
    Abstract: A concentrator photovoltaic unit being an optical system base unit includes: a concentrating portion configured to converge sunlight; a cell configured to receive light converged by the concentrating portion to generate power; a package including a frame portion, the frame portion having insulating property and surrounding the cell, the package being in integrated relation with the cell; a shield plate provided between the concentrating portion and the cell, and including an opening allowing light converged by the concentrating portion to selectively pass therethrough; and a protection plate being a heat-resistant member provided on the frame portion to make the cell expose to the light and to shield the package, the protection plate being in contact with nothing but the frame portion, and securing a predetermined insulation distance from a live portion of the cell.
    Type: Application
    Filed: February 11, 2015
    Publication date: August 27, 2015
    Inventors: Youichi NAGAI, Koji MORI, Kazumasa TOYA, Takashi IWASAKI, Makoto INAGAKI, Yoshiki KUHARA
  • Patent number: 9115683
    Abstract: A ring gear to be coupled to a crankshaft of an engine; a starter motor for starting the engine; a pinion gear for transmitting rotation of the starter motor to the ring gear; pinion-gear meshing-engagement unit for moving the pinion gear to achieve meshing engagement with the ring gear; rpm-difference acquiring unit for acquiring an rpm difference between the pinion gear and the ring gear; and restart control unit for allowing the pinion gear to be moved by the pinion-gear meshing-engagement unit when the rpm difference between the pinion gear and the ring gear, which is acquired by the rpm-difference acquiring unit, becomes smaller than a threshold value are provided. The restart control unit includes threshold-value setting unit, and the threshold value corresponding to a characteristic to be input to the threshold-value setting unit is preset.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: August 25, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroaki Kitano, Takashi Iwasaki, Masahiko Kurishige, Koichiro Kamei, Kazuhiro Odahara, Naohito Kaneda
  • Publication number: 20150194561
    Abstract: Mutual alignment between a condenser lens and its power generating element can be performed easily and accurately. This method for producing a concentrator photovoltaic unit includes: a first step of emitting linear laser beams respectively toward incident positions 42 on an incident surface 13f1; and a second step of performing positional adjustment between a Fresnel lens 13f and a power generating element part 21, based on positional relationship between the power generating element part 21 and beam images respectively formed by the linear laser beams at a time when the beam images and the power generating element part 21 are seen along an optical axis S from the incident surface 13f1 side of the Fresnel lens 13f.
    Type: Application
    Filed: January 7, 2015
    Publication date: July 9, 2015
    Inventors: Kazumasa TOYA, Takashi IWASAKI, Koji MORI, Makoto INAGAKI, Rui MIKAMI, Yoshiki KUHARA
  • Patent number: 8977436
    Abstract: An electric power steering system includes steering a torque detector that detects steering torque, and a motor that provides assist torque based on the detected steering torque, wherein for the purpose of estimating, without detecting motor rotation angular information and rotation angular velocity information, the road reaction torque in which the influence of the motor inertia torque is eliminated, a value corresponding to rotation velocity of a steering shaft is calculated based on the steering torque and the assist torque, to calculate road reaction torque based on the value corresponding to the rotation velocity of the steering shaft.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: March 10, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaya Endo, Takashi Iwasaki, Masahiko Kurishige, Takayuki Kifuku, Yoshihiko Kinpara
  • Publication number: 20150027510
    Abstract: A concentrator photovoltaic module including: a flexible printed circuit provided in contact with a bottom surface of a housing; and a primary concentrating portion formed by a plurality of lens elements being arranged, each lens element concentrating sunlight, wherein the flexible printed circuit includes: an insulating base material and a conductive pattern; a plurality of power generating elements provided on the pattern, so as to correspond to the lens elements, respectively; a cover lay as a covering layer having insulating property and a low water absorption not higher than a predetermined value, the cover lay covering and sealing a conductive portion including the pattern on the insulating base material; and an adhesive layer having insulating property and a low water absorption not higher than the predetermined value, the adhesive layer bonding the insulating base material and the covering layer together.
    Type: Application
    Filed: May 23, 2014
    Publication date: January 29, 2015
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kenji SAITO, Takashi IWASAKI, Kazumasa TOYA, Yoshiya ABIKO, Kenichi HIROTSU, Youichi NAGAI, Hideaki NAKAHATA, Rui MIKAMI
  • Publication number: 20140373899
    Abstract: Provided is a concentrator photovoltaic system including: a concentrator photovoltaic panel; a driving device configured to cause the concentrator photovoltaic panel to perform operation of tracking the sun; and a control device configured to detect a change pattern repeatedly occurring in temporal change in generated power of the concentrator photovoltaic panel, and configured to compare the detected change pattern with a form characteristic to deviation in an azimuth and a form characteristic to deviation in an elevation, to detect the presence/absence of deviation in tracking.
    Type: Application
    Filed: June 23, 2014
    Publication date: December 25, 2014
    Inventors: Takashi IWASAKI, Kenichi HIROTSU, Hideaki NAKAHATA, Seiji YAMAMOTO, Naoki AYAI
  • Publication number: 20140352766
    Abstract: According to one embodiment, a solar cell module includes: a casing including a wall; a box made of a resin and attached to the casing, the box including a terminal accommodating part; a cable configured to connect an external part, an end part of the cable introduced to the box; and a terminal fitting, accommodated in the terminal accommodating part, the terminal fitting connected to the cable and an output conductor, wherein: the wall is formed with a first opening for attaching the box from an outer surface side; the terminal accommodating part is formed with a second opening at a position opposed to the wall; and the second opening faces an inner part of the casing through the first opening when the box is attached to the casing.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 4, 2014
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Yusuke ARAKI, Takahiro ASAO, Yoshiya ABIKO, Takashi IWASAKI
  • Publication number: 20140306641
    Abstract: A motor control apparatus includes a reference model unit configured to generate a model output representing a desired operation of the controlled object and a model input for driving the controlled object to the desired operation, a feedback unit configured to generate a feedback for causing the control output to follow the model output, and an adder configured to add up the model input and the feedback and generate a control input to the controlled object. The reference model unit includes a storing unit configured to retain, as a vector, a present value of the target value and one or a plurality of past values of the target value, a numerical model configured to simulate a characteristic of the controlled object and generate the model output and a state variable on the basis of the model input, a model controller configured to generate the model input, and a controller determining unit configured to determine the model controller.
    Type: Application
    Filed: March 21, 2012
    Publication date: October 16, 2014
    Applicants: Mitsubishi Electric Corporation, Tokyo Institute of Technology
    Inventors: Yuji Igarashi, Hidetoshi Ikeda, Takashi Iwasaki, Takeshi Hatanaka, Masayuki Fujita
  • Publication number: 20140230883
    Abstract: As a structure of a concentrator photovoltaic module, a ribbon-shaped flexible printed circuit is arranged along a bottom surface of a vessel-shaped housing. The flexible printed circuit includes a solar cell on a flexible substrate having flexibility, and furthermore, can also include a concentrating portion (a secondary concentrating portion) for concentrating incident sunlight onto the solar cell. Moreover, a primary concentrating portion having a Fresnel lens is attached to the housing side.
    Type: Application
    Filed: September 25, 2012
    Publication date: August 21, 2014
    Inventors: Takashi Iwasaki, Kazumasa Toya, Kazuhiro Jingoro
  • Patent number: D719909
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: December 23, 2014
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Takashi Iwasaki, Masanobu Koganeya