Nec Corporation

Denso Corporation

Nec Toshiba Space Systems, Ltd.

Yoshiho Yanagita

Kazuhiko Aoki

Koji Kudo

Takahiro Toizumi

Hisato Sakuma

Hitoshi Yano

Eisuke Saneyoshi

Ryo Hashimoto

Yuma Iwasaki

Osamu Ishibashi

Masahiko Ohta

So Nishimura

Fujio Okumura

Hiroshi Kajitani

Masatomo Mizuta

Toshiro Hattori

Shin Yoshizawa

Toshihiro Kurii

A battery control device controlling an operation of a battery connected to a power system includes detection means that detects battery-related information that shows a state of the battery, or a voltage of an interconnection point of the power system and the battery, first communication means that transmits a detection result of the detection means to an external device, and receives operation control information to control the operation of the battery from the external device, and control means that controls the operation of the battery, based on a state of the power system and the operation control information received by the first communication means.

Battery control device, battery control support device, battery control system, battery control method, battery control support method, and recording medium

A supply-and-demand adjustment system, that utilizes characteristics of supply-and-demand adjustment apparatuses and precisely matches a total supply-and-demand adjustment amount with a required adjustment amount when performing a supply-and-demand adjustment. The supply-and-demand adjustment system comprises a central control apparatus and one or more supply-and-demand adjustment apparatuses, the central control apparatus includes a state collection unit that collects information with regard to a state of each supply-and-demand adjustment apparatus, an allocation band calculation unit that calculates a frequency band and an intensity of a fluctuation of a supply-and-demand adjustment to be allocated to each supply-and-demand adjustment apparatus based on the information of the state, and an adjustment amount calculation unit that calculates a supply-and-demand adjustment amount for each supply-and-demand adjustment apparatus based on the frequency band and the intensity of the fluctuation of the supply-and-demand adjustment to be allocated to said each supply-and-demand adjustment apparatus.

Supply and demand adjustment system, supply and demand adjustment method, and supply and demand adjustment program

A power flow control system is provided that is capable of improving the reliability of controlling power flow fluctuation and creating wide applicability for systems that control power flow fluctuation. A power-varying device () varies the distribution line power amount, which is a value of the power flow that flows in a distribution line () to which is connected a plurality of power sources () that each generate power. A measurement device () measures an index value relating to the total generated power amount, which is the sum total of the amount of power generated by each of the power sources. A calculation device () estimates the total generated power amount from the index value, and according to the estimation result, regulates the amount of change in the distribution line power amount that is changed by the power-varying device.

Power flow control system and power flow control method

A supply and demand adjustment system, that utilizes characteristics of a supply-and-demand adjustment apparatuses and precisely matches the total supply-and-demand adjustment amount with a required adjustment amount, when adjusting supply and demand, is provided. The supply and demand adjustment system that includes a central control apparatus and one or more supply-and-demand adjustment apparatuses, the central control apparatus including, supply-and-demand-adjustment-apparatus-state-collection unit that collects information with regard to a state of each supply-and-demand adjustment apparatus, allocation band calculation unit that calculates a frequency band and an intensity of a fluctuation of supply and demand adjustment to be allocated to the supply-and-demand adjustment apparatus based on the information of the state, and a supply-and-demand-adjustment-amount-calculation-unit that calculates a supply-and-demand adjustment amount for each supply-and-demand adjustment apparatus based on the frequency band and the intensity of the fluctuation of supply and demand adjustment to be allocated to the supply-and-demand adjustment apparatus.

A projector includes a screen having a periodic array of color stripes for producing visible light depending on incident light, a light source that remits a light beam, a projection unit that scans an area of the screen where the color stripes are disposed, with the light beam in a direction across the color stripes, to display an image on the screen, a detector that detects the visible light from each of the color stripes as a feedback light pulse, and a controller that adjusts a start-of-emission timing of the light source based on a start-of-detection timing at which the feedback light pulse is detected by the detector and a detection period during which the feedback light pulse is detected by the detector, and controlling the light source to emit the light beam in order to apply light pulses to the color stripes within boundaries thereof.

Projector and control method

A projection screen includes: phosphor regions arranged cyclically in an in-plane direction of a display region; a plurality of black stripes and reference black stripes that partition the display region into the phosphor regions; and an optical information formation unit that is provided in a specific position within the display region and that generates readable optical information.

Projection system, projection-type image display device, and multi-projection system

A motor control apparatus that controls the rotational angle of a motor () which drives a rotating body () includes a synchronizing means () for generating and outputting an interrupt signal () based on an external reference signal () input from outside and a rotating body reference signal () generated by the rotating body, and a controlling means () for computing a command value for making the rotational angle of the motor follow a target rotational angle and outputting the command value to the motor each time the interrupt signal is inputted. The synchronizing means () changes the output period of the interrupt signal () in accordance with a time difference between the external reference signal () and the rotating body reference signal ().

Motor control apparatus, motor control method, motor system, and computer-readable medium

A projector that can solve a problem in which a projection image is disturbed due to deviation of incident positions of projection light to a screen is provided. Projection sectionincludes LD light emission sectionand scanning sectionthat scans light emitted by LD light emission sectionand projects the scanned light to the rear plane side of the screen. Control sectioncontrols an amount of light emission of the light and a scanning angle of scanning sectionbased on an image signal so as to cause projection sectionto project an image corresponding to the image signal to the screen. Control sectioncorrects an orientation of projection light corresponding to each pixel of the image projected from projection sectionbased on a refractive index of the light transmission member and a scanning angle of scanning sectionso as to correct an incident position of the projection light on the screen.

Projector, projector system, and image correcting method

A three-phase motor control apparatuscontrolling a driver which drives a three-phase motor includes: a desired rotation angle generation sectionwhich generates a desired rotation angle; a rotation angle detectorwhich detects a detected rotation angle which is the rotation angle of said three phase motor; a feedback controllerwhich generates a q-axis command reference value which controls the q-axis voltage or the q-axis current of the three-phase motorin response to the desired rotation angle and the detected rotation angle; a drive torque correction section and an adderwhich generate a q-axis command value by correcting the q-axis command reference value; and a two-phase to three-phase transformation sectionwhich generates a control signal which controls the driver circuitwhich drives the three-phase motor in response to the q-axis command. The drive torque correction sectionincludes an angle look-up tablewhich contains elements respectively associated with angle ranges defined for the rotation angle of the three-phase motor, and selects any of the elements in response to the detected rotation angle. The q-axis command is generated by correcting the q-axis command reference value based on the value of the selected element.

Three-phase motor controller, three-phase motor system, three-phase motor control method and program

A multi-projection display system is provided with a plurality of sensor units corresponding to projector units. The sensor units detect brightness for each color in a projected image that is projected on a screen and supply the detection results. The projector unit generates a brightness correction table on the basis of the image signal of a specific picture element of the projected image realized by an adjacent projector unit and on the basis of the brightness of the specific picture element of the projected image of the adjacent projector unit that is detected by a sensor unit for matching the brightness of the image projected by its own projector unit with that of the adjacent projector unit, refers to the brightness correction table to correct brightness for each color of the image signals that are received as input, and projects onto a screen the light of each color in accordance with the corrected image signals.

Multi-projection display system and method of adjusting brightness thereof

A micro movable mechanism system includes a micro movable mechanism. A target position generating section generates a signal indicative a target position of the micro movable mechanism. A nonlinear control unit outputs a controller output signal indicating a control value based on a difference between the target position signal and a signal indicating a current position of the micro movable mechanism. A root correction section drives the micro movable mechanism based on a signal proportional to a square root of the control value.

Micro movable mechanism system and control method for the same

In a head positioning mechanism has a micro tracking actuator which is between a carriage and a supporting spring for making the supporting spring be rotated relative to the carriage to adjust a position of a magnetic head, the micro tracking actuator has a pair of coils held to one of said carriage and said supporting spring. Each of the coils generates magnetic flux in response to a flow of electric current therein. The micro tracking actuator further has a magnet arrangement held to another of the carriage and the supporting spring to face the coil means in a predetermined direction. The magnet arrangement traverses the magnetic flux to have a particular size which varies in accordance with a predetermined relation in response to a relative movement between the coils and the magnet arrangement. The carriage is movably mounted to a magnetic disk device to which the head positioning mechanism applied. The supporting spring is attached to the carriage and rotatable around a predetermined axis extending in the predetermined direction. The supporting spring holds the magnetic head to perform a seeking operation of the magnetic head in cooperation with the carriage.

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Tokyo, Japan

Yoshiho Yanagita