Nakano, Chiyoda-Ku
Koichi Nakano, Chiyoda-Ku JP
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20120199533 | HEMODIALYSIS APPARATUS, METHOD OF OPERATING HEMODIALYSIS APPARATUS, AND WATER CONTENT REMOVAL SYSTEM - A hemodialysis apparatus includes a dialyzer, a quantitative vessel including a displaceable partition wall which partitions the inside of the quantitative vessel into a first chamber and a second chamber, a storage vessel which stores a dialysate, a dialysate exchange circuit which supplies the dialysate to the first chamber, and discharges a waste dialysate in the second chamber to the outside by the consequent displacement of the partition wall to the second chamber side, a dialysate supply circuit which supplies the dialysate in the first chamber to the dialyzer, and discharges the waste dialysate from the dialyzer to the second chamber by the displacement of the partition wall to the first chamber side, and a dialysate storage circuit which supplies the dialysate in the first chamber to the storage vessel by the displacement of the partition wall to the first chamber side. | 08-09-2012 |
Kosuke Nakano, Chiyoda-Ku JP
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20130194852 | POWER CONVERTING APPARTATUS - In a power converting apparatus having a plurality of phases on an AC side and configured to perform conversion between DC power and AC power, a current detector detects currents flowing through a DC source line through which a plurality of phase currents commonly flow. A control unit sets a current detection period and a succeeding current control period in each successive control cycle. Using first gate signals based on reference gate signals for PWM control, the control unit calculates values of the individual phase currents from the first gate signals and the detected currents during the current detection period. Then, during the current control period, the control unit performs PWM control using phase voltage commands generated by correcting phase voltage target values so as to cancel out voltage errors that occur during the current detection period. | 08-01-2013 |
20130200827 | MOTOR CONTROL DEVICE, CURRENT CONTROL METHOD APPLIED TO MOTOR CONTROL DEVICE, AND ELECTRIC POWER STEERING DEVICE USING MOTOR CONTROL DEVICE - Provided is a motor control device ( | 08-08-2013 |
20130257332 | ELECTRIC MOTOR DRIVING APPARATUS HAVING FAILURE DETECTION CIRCUIT, AND FAILURE DETECTION METHOD FOR THE ELECTRIC MOTOR DRIVING APPARATUS HAVING FAILURE DETECTION CIRCUIT - An electric motor driving apparatus having a failure detection circuit includes: a bridge circuit driving an electric motor; a PWM control circuit generating voltage instruction for driving the electric motor; a PWM signal generation circuit generating a PWM signal; a DC current detection circuit detecting DC current of the bridge circuit; a phase current calculation circuit calculating output phase current of the bridge circuit, based on the DC current and PWM signal; and a failure detection circuit detecting failure of the DC current detection circuit. The failure detection circuit determines failure of the DC current detection circuit from the DC current detected values in a zero voltage period in which the high-potential-side arms of the bridge circuit are all ON and in a zero voltage period in which the low-potential-side arms are all ON. | 10-03-2013 |
20140077745 | DRIVE CONTROL DEVICE AND DRIVE CONTROL METHOD - The invention provides a drive control device that comprises: inverters that are connected to a motor; a variable resistive element that is connected between the motor and each of the inverters; a current/voltage detection device connected between the motor and each of the inverters; and a controller that, when detecting a fault of an inverter that drives the motor based on a detection signal from the current/voltage detection device, gradually increases a resistance value of a variable resistive element provided between the faulty inverter and the motor at a velocity of a resistance variation such that a surge voltage has a voltage value for which the variable resistive element and the motor are not damaged, and executes drive control of the motor by a normal inverter other than the faulty inverter. | 03-20-2014 |
20140246999 | MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE - There is provided a motor control device for controlling a motor including plural sets of windings, which is configured so that, when a fault detection means detects a fault, inverters in the normal side other than in the fault side are continued to be controlled by normal-time current control means and further, inverters in the fault side are continued to be controlled by fault-time voltage commands generated by a fault-time current control means configured with a fault-time normal-side command generator and a fault-time fault-side command generator, so as to emphasis a torque ripple of the motor when a winding fault of the motor or an inverter fault occurs, to thereby cause a user to surely recognize the fault. | 09-04-2014 |
Masayuki Nakano, Chiyoda-Ku JP
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20080205013 | SOLDER LAYER AND DEVICE BONDING SUBSTRATE USING THE SAME AND METHOD FOR MANUFACTURING SUCH A SUBSTRATE - A solder layer and an electronic device bonding substrate having high bonding strength of a device and low bonding failure even by a simplified bonding method of a device to a substrate and a method for manufacturing the same are provided. | 08-28-2008 |
Sho Nakano, Chiyoda-Ku JP
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20150162796 | STATOR AND ROTATING ELECTRICAL MACHINE EQUIPPED WITH THE SAME | 06-11-2015 |
Takayuki Nakano, Chiyoda-Ku JP
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20110120887 | METHOD AND DEVICE FOR CLEANING CIRCULATION WATER - The object of the invention is to provide a method for cleaning circulation water, which reduces the cost of operation and maintenance as much as possible, without a cumbersome cleaning operation such as by detaching electrode plates from an electrolysis cleaning tank and removing scale from inside the tank, and to provide a device used in this method. Accordingly, the present invention provides a method for cleaning circulation water, comprising the steps of flowing circulation water to be cleaned between electrode plates placed in a face-to-face manner between one another; and applying DC voltage between the electrode plates, allowing one or more metal ions contained in the circulation water to be precipitated onto the negative electrode plates by electrolysis, to clean the circulation water, wherein the electrode plates used are made of titanium plates, and wherein a desired amount of current flows, while an anodized oxide coating formed on the surface of the positive electrode plates is compulsively subject to dielectric breakdown by increasing the voltage applied to the anodized oxide coating. FIG. | 05-26-2011 |
Yoshikazu Nakano, Chiyoda-Ku JP
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20090288809 | METHOD OF MANUFACTURING ELECTRICAL DISCHARGE SURFACE TREATMENT-PURPOSE ELECTRODE AND ELECTRICAL DISCHARGE SURFACE TREATMENT-PURPOSE ELECTRODE - An object of the present invention is to provide an electrical discharge surface treatment-purpose electrode that stabilizes properties and a film-forming rate of a coating made by surface treatment that uses the electrode showing a narrow distribution in physical properties such as a composition and resistance. A method of manufacturing an electrical discharge surface treatment-purpose electrode according to the present invention is identified as a method of manufacturing an electrical discharge surface treatment-purpose electrode formed of a green compact made of a metal powder subjected to compression molding, characterized in that the method includes the step of forming a nitride coating by nitriding a surface of the metal powder, and the step of forming a green compact by subjecting the metal powder having its surface nitrided to compression molding. | 11-26-2009 |
20130344651 | DISCHARGE SURFACE TREATMENT APPARATUS AND DISCHARGE SURFACE TREATMENT METHOD - A discharge surface treatment apparatus supplies an electrode material to a surface of a treatment target member by generating pulsating discharges across an inter-electrode gap to form a coating of the electrode material, and includes a switching element that turns application of a voltage from a power source to the inter-electrode gap on/off, a capacitance element that is connected to the switching element in parallel with the inter-electrode gap, an inductance element that is connected in series between both of the switching element and the capacitance element and the inter-electrode gap, and a control unit that includes a function of periodically performing on/off so that an induced electromotive force generated in the inductance element due to a change in the current of discharge generated across the inter-electrode gap can be used as a voltage that induces the next discharge | 12-26-2013 |