Patents Assigned to Mitsubishi Electric Corporation
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Publication number: 20240137815Abstract: A method for learning QoS performance inter-dependence of a plurality of communication links in a network managed by a central node, wherein the plurality of wireless links interface with a common application applying a joint figure of merit, comprising: selecting at least two links among the plurality of communication links; generating training requests respectively for each selected link; measuring QoS performance on each selected link for the training requests; and combining the measured QoS performance of the selected links, so as to obtain the QoS performance inter-dependence between the selected links.Type: ApplicationFiled: September 14, 2021Publication date: April 25, 2024Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: QIANRUI LI, HERVE BONNEVILLE, NICOLAS GRESSET, AKL CHARAF
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Publication number: 20240137826Abstract: A communication system includes: a base station conforming to New Radio Access Technology; and a communication terminal capable of performing multicast communication with the base station. While executing the multicast communication, the communication terminal transmits reception status information to the base station in communication with the communication terminal, the reception status information being information related to a data reception status, and the base station performs control of retransmission of data to the communication terminal on the basis of the reception status information.Type: ApplicationFiled: February 21, 2022Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI
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Publication number: 20240136894Abstract: A control device that includes a circuit board, a plurality of heating elements that generate heat that accompanies driving the motor, and a rotation angle sensor that detects a rotation angle of the motor. The circuit board has a power supply input portion to which a driving current of the motor is supplied, a heating element mounting region where the plurality of the heating elements are mounted, and a controller mounting region where the rotation angle sensor is mounted. The power supply input portion, the heating element mounting region, and the controller mounting region are disposed in such an order. The circuit board, as seen from an axial direction of the rotating shaft, protrudes to an outside of a projection region that projects an outer surface of a cylindrical portion of a motor case that surrounds the motor. The power supply input portion is located on a portion out of portions of the circuit board that are on the outside of the projection region.Type: ApplicationFiled: April 27, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Yoshikuni TOMIOKA, Takashi NAGAO, Katsuhiko OMAE, Takahiro OKANOUE
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Publication number: 20240136881Abstract: A metal support structural body is provided on the radially outer side of a phase ring for connecting a rotating electric machine armature winding at a stator end. An insulator ensuring an insulation distance to the ground is interposed between the phase ring and the metal support structural body. Thus, long-term reliability improves as compared to a conventional insulation-to-ground structure. Since the insulation distance to the ground is ensured by the insulator, the phase ring and the metal support structural body are configured with an insulation thickness smaller than needed for insulation to the ground, thereby improving cooling performance for the phase ring and the metal support structural body. Occurrence of induced current in the metal support structural body is suppressed, thus allowing application of a simple fastening structure such as metal bolts to a stator frame.Type: ApplicationFiled: May 13, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Wataru YAMASHITA, Tatsuya OKUDA
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Publication number: 20240136950Abstract: An electric-power conversion apparatus includes a driving circuit that performs switching control of semiconductor switching devices, a short-circuit control means that performs short-circuit control of an electric-power conversion circuit, an excessive-current detection means that detects whether or not an abnormality caused by an excessive current exists in the semiconductor switching device, and a gate-drive-abnormality detection means that detects whether or not an abnormality exists in a gate voltage of the semiconductor switching device; based on a result of the abnormality detection by the excessive-current detection means and a result of the abnormality detection by the gate-drive-abnormality detection means, the short-circuit control means turns on all the semiconductor switching devices in any one of the upper arm and the lower arm so as to perform the short-circuit control.Type: ApplicationFiled: May 29, 2023Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Toshikazu Takagi, Chiharu Morisaki
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Publication number: 20240136935Abstract: An electric power conversion apparatus according the present disclosure includes: voltage detection means which detects the voltages of both bridge circuits, and a control device which controls the semiconductor switching elements of both bridge circuits. The control device includes a phase difference operation part which calculates a phase difference between the output of the first bridge circuit and the output of the second bridge circuit, based on the voltage values of both bridge circuits which are detected by the voltage detection means and an electric power command value; a compensation amount operation part which calculates a compensation amount which compensates an error due to the phase difference; and a PWM signal generation part which generates gate signals of the semiconductor switching elements, from a first operation result of the phase difference operation part and a second operation result of the compensation amount operation part.Type: ApplicationFiled: April 25, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Kenichi FUKUNO, Takaharu ISHIBASHI, Takato TOI
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Publication number: 20240136915Abstract: A power converter includes: a multiphase inverter circuit including a plurality of switching elements; a plurality of current sensors each configured to detect a current of the inverter circuit and output a value of the current detected; a terminal voltage detector configured to detect a voltage of each terminal of a load connected to the inverter circuit and output a value of the voltage detected; a switching element drive circuit configured to control the plurality of switching elements of the inverter circuit according to a switching pattern given; a fault detector configured to detect a fault in the inverter circuit or the plurality of current sensors; and a fault identifier configured to, after the fault detector detects the fault, switch the switching pattern to be given to the switching element drive circuit according to types of faults detectable by the fault detector, and perform identification processing of identifying a type and a location of the fault in the inverter circuit or the plurality of cuType: ApplicationFiled: April 13, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Hiroya NATSUHARA, Isao KEZOBO, Tatsuya MORI, Chiaki FUJIMOTO, Atsushi ITO, Yusuke TAKARADA
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Publication number: 20240136906Abstract: A bearingless motor includes a rotor, a stator for applying support force and torque to the rotor, and a first displacement sensor and a second displacement sensor for detecting a radial position of the rotor. The stator includes a motor winding for generating a magnetic flux having p poles to produce the torque, and a support winding for generating a magnetic flux having p±2 poles or two poles to produce the support force. The first displacement sensor and the second displacement sensor are disposed at positions axially different from each other.Type: ApplicationFiled: April 20, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Masahito MIYOSHI, Yusuke SAKAMOTO, Shinichi FURUTANI
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Publication number: 20240132326Abstract: A remote monitoring system includes a registration accepting part and a setting part. The registration accepting part accepts registration information. The registration information represents registration of a second user as a child user of a first user being registered in a user management table. A first table associates a browsable monitoring range with each user. When the registration accepting part accepts registration information, the setting part sets a monitoring range which can be browsed by the second user as a child user of the first user to a range not exceeding a browsable monitoring range which is associated with the first user in the user management table.Type: ApplicationFiled: March 23, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventor: Masayuki SATO
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Publication number: 20240133573Abstract: An air-conditioning apparatus includes configured to, when a cooling operation mode is changed into one of multiple dehumidifying operation modes, select the one of the multiple dehumidifying operation modes on the basis of a value of a sensible heat ratio difference ?SHF that is a difference between a target sensible heat ratio acquired from an indoor temperature detected by an indoor temperature sensor, a target indoor temperature, and target indoor humidity and a theoretical minimum possible sensible heat ratio acquired from enthalpy of an indoor air, enthalpy of blown air from the indoor unit when relative humidity is 100%, and enthalpy of sensible heat.Type: ApplicationFiled: March 17, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Kazuya HONDA, Naofumi TAKENAKA, Jumpei TAKAGI, Masafumi TOMITA, Mizuo SAKAI
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Publication number: 20240134000Abstract: A radar system, a radar device, and an interference avoidance method are obtained that can utilize frequency effectively even in three or more radar devices. A radar system includes three or more radar devices and a schedule management controller. Schedule management controller predicts an interference time period that is a time period during which the overlapping scanning/radiation range is generated, determines a first interference avoidance measure that is a measure to cause radar devices to use respective different use frequencies while keeping a restriction on the number of frequency channels, in the predicted interference time period, and determines a second interference avoidance measure to be performed by a radar device that is unable to avoid interference by the first interference avoidance measure.Type: ApplicationFiled: February 16, 2022Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Takamichi NAKAMIZO, Ikuya KAKIMOTO, Tomoya MATSUDA, Masahiro HAGIO
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Publication number: 20240133577Abstract: The control unit causes a heater to operate when a temperature of a supply air flow is equal to or lower than a first temperature threshold, the temperature of the supply air flow being measured by an outdoor air temperature sensor while an air supply blower and an exhaust blower are in operation and the heater is stopped; and controls a protective operation mode when a temperature of the supply air flow is equal to or lower than a second temperature threshold, the protective operation mode being a mode in which the air supply blower is intermittently operated or is stopped and the exhaust blower continues operation, the temperature of the supply air flow being measured by the outdoor air temperature sensor after the heater is caused to operate.Type: ApplicationFiled: May 24, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Masami YASUDA, Kohei HASEGAWA, Shigenori KOIZUMI, Yutaro HAYAMIZU
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Publication number: 20240136967Abstract: A loss in each of a converter, an inverter, and a motor changes according to operation based on the rotation speed of the motor or the like. Thus, in order to efficiently perform operation, appropriate control needs to be performed according to the voltage of a DC power supply and operation of the motor. The present disclosure is characterized by including a controller which controls a switching element of a converter according to the torque and the rotation speed of a motor on the basis of a loss in at least one of the motor, an inverter, and the converter.Type: ApplicationFiled: September 18, 2023Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventor: Tomonori YAMADA
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Publication number: 20240134771Abstract: The present disclosure relates to a method for correcting the operation of a target computer system constrained by an inconsistent set of timed requirements, the set of timed requirements comprising a first subset and a second subset, said method comprising initializing a set of constraints based on a witness trace of the inconsistency, and iterating steps of: •—modifying the second subset of timed requirements to obtain an updated set of timed requirements for which each constraint in the set of constraints is satisfied; •—searching for a further witness trace of the inconsistency of the updated set of timed requirements; •—when a further witness trace is found: augmenting the set of constraints based on said further witness trace; wherein the operation of the target computer system is considered corrected when no further witness trace is found for an updated set of timed requirements.Type: ApplicationFiled: November 30, 2021Publication date: April 25, 2024Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: REIYA NOGUCHI, THIERRY JERON, NICOLAS MARKEY, OCAN SANKUR
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Publication number: 20240135310Abstract: An information processing device includes an acquisition unit that acquires mobile object information, parcel information, pickup delivery information as information regarding at least one of pickup and delivery, map information, weather information, and traffic information, a calculation control unit that calculates a delivery company burden, as a cost defrayment by a delivery company, in regard to each combination of target parcels and a mobile object by using the mobile object information, the parcel information, the pickup delivery information, the map information, the weather information and the traffic information, a determination unit that determines an optimum combination out of a plurality of combinations based on the delivery company burden calculated in regard to each combination of target parcels and a mobile object, and an output unit that outputs the optimum combination.Type: ApplicationFiled: December 29, 2023Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Yoshie IMAI, Kentaro ISHIKAWA, Shunya OSAWA, Masato TSUCHIYA, Yoshiki MITSUI, Nobuaki MOTOYAMA, Satoru FURUTA, Masahiro ABUKAWA
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Publication number: 20240133592Abstract: A refrigeration cycle apparatus includes a main circuit and a bypass circuit. The main circuit includes: a compressor; a first condenser; a first refrigerant-to-refrigerant heat exchanger; a first expansion device; a first branching portion; a first evaporator; a third branching; and a fourth branching portion. The bypass includes: a second expansion device; the first refrigerant-to-refrigerant heat exchanger; and a second branching portion. The second branching portion includes a liquid outflow pipe and a gas outflow pipe. The liquid outflow pipe defines one outlet for the refrigerant and is located below the gas outflow pipe. The gas outflow pipe defines another outlet for the refrigerant and is located above the liquid outflow pipe. The one outlet of the second branching portion communicates with the third branching portion. The other outlet of the second branching portion communicates with the fourth branching portion.Type: ApplicationFiled: March 30, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Kosuke MIYAWAKI, Yuki MIZUNO, Soshi IKEDA, Jun NISHIO, Yuji MOTOMURA, Koji FURUYA, Hiroki WASHIYAMA
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Publication number: 20240135729Abstract: There is provided an occupant detection device with a reduced processing load. An occupant detection device includes an image obtainer to obtain a captured image from an imaging device including, in an imaging range, a driver present in a driver seat of a vehicle and a passenger present in a passenger seat or a rear seat of the vehicle, an occupant detector to obtain the captured image from the image obtainer, the occupant detector being capable of detecting the driver and the passenger in the captured image, and a detection target determiner to determine whether a detection target of the occupant detector is one of occupants of the driver and the passenger or both of the occupants of the driver and the passenger.Type: ApplicationFiled: March 15, 2021Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventor: Taro KUMAGAI
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Publication number: 20240134870Abstract: An information processing device includes an acquisition control unit that acquires an input value as a numerical value and a feature word as a word related to the input value, acquires probability distribution information as information regarding probability distribution and corresponding to the feature word, and acquires a plurality of target numerical values as a plurality of numerical values corresponding to the feature word and a calculation unit that calculates a plurality of similarity levels each being a level of similarity between the input value and each of the plurality of target numerical values based on the input value, the probability distribution information and the plurality of target numerical values.Type: ApplicationFiled: December 26, 2023Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventor: Kotaro OTOMURA
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Publication number: 20240135468Abstract: A CPU performs multiple regression analysis using a first regression model to calculate a tentative degree of contribution of each target facility to the total power consumption. The CPU calculates tentative power consumption of the target facility using the tentative degree of contribution of the target facility. The CPU calculates power consumption of a non-monitored facility by subtracting the total value of the tentative power consumption of the target facility from the total power consumption. The CPU classifies time-series data of the power consumption of the non-monitored facility into a plurality of clusters. The CPU performs multiple regression analysis using a second regression model to determine the degree of contribution of each of the target facilities. The CPU determines the power consumption of the target facility using the determined degree of contribution.Type: ApplicationFiled: December 26, 2023Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Fuyuki SATO, Shinichiro OTANI
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Publication number: 20240136309Abstract: Provided is a semiconductor device with higher reliability and longer life which can suppress an increase in production costs. A semiconductor device includes: a semiconductor element; a top electrode on an upper surface of the semiconductor element; and a conductive metal plate containing copper as a main component and solid-state diffusion bonded to the top electrode of the semiconductor element.Type: ApplicationFiled: July 25, 2023Publication date: April 25, 2024Applicant: Mitsubishi Electric CorporationInventors: Yasunari HINO, Junichi YAMASHITA, Koji TANAKA, Tomohide TERASHIMA, Shinichi IZUO