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1. 发明申请

WO2023281770A1 COHERENT OPTICAL RECEIVER 审中-公开
公开(公告)号：WO2023281770A1
公开(公告)日：2023-01-12
申请号：PCT/JP2021/048073
申请日：2021-12-17
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
发明人： FROC, Gwillerm
IPC分类号： H04B10/61
摘要： A coherent optical receiver comprises a local oscillator, a polarization- diversity actuator configured for modifying an optical signal output by the local oscillator and a 2 x 2 coupler for coupling the optical signal output by the polarization-diversity actuator and a modulated optical signal received from a coherent optical transmitter. The local oscillator thus provides a boosting effect to the amplitude-shift keying modulated optical signal. The coherent optical receiver comprises a controlling unit performing a domain-switching procedure acting on ellipticity main axis orientation and/or ellipticity phase shift for coarse control of the polarization-diversity actuator, and a phase-refining procedure acting on a controlled error signal injected in the phase of the optical signal output by the polarization-diversity actuator for fine control of the polarization-diversity actuator.

2. 发明申请

WO2022259581A1 METHOD, DEVICE, AND SYSTEM FOR CONTROLLING STATE PARAMETER BY COMMUNICATING DEVICE 审中-公开
公开(公告)号：WO2022259581A1
公开(公告)日：2022-12-15
申请号：PCT/JP2021/047755
申请日：2021-12-16
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
发明人： BOUTTIER, Arnaud
IPC分类号： G05B13/04
摘要： The present disclosure relates to a method (40) for controlling a state parameter by a communicating device (20), referred to as processing device (20), in a set of communicating devices (20), a subset of communicating devices being associated to said processing device, said subset including the processing device and the communicating devices from which the processing device receives data for updating (S42) a local value of the state parameter, the processing device estimating (S41) an aggregated state parameter aggregating the local values of the state parameter of the communicating devices of the subset by using a Kalman filter which applies a process model, an error introduced by the process model being modeled as a process noise, the processing device updating its local value of the state parameter based on the estimated aggregated state parameter; wherein the processing device (20) determines (S44) a convergence level of the local values of the state parameter and modifies (S45) a covariance matrix of the process noise based on the determined convergence level.

3. 发明申请

WO2022254774A1 METHOD AND DEVICE FOR TRANSMITTING BINARY DATA 审中-公开
公开(公告)号：WO2022254774A1
公开(公告)日：2022-12-08
申请号：PCT/JP2022/001872
申请日：2022-01-13
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
发明人： CORLAY, Vincent , GRESSET, Nicolas
IPC分类号： H04L27/00 , H04L27/04
摘要： A method for transmitting binary data using a M-ASK constellation divided into M/2 sets of two symbols is disclosed. Each set of index i comprises the ith and ith+M/2 symbols of the constellation and is associated with a probability pi of transmitting the first symbol of the set. First, m-1 bits are obtained from an equiprobable binary source where m = log2M. A binary source is then selected in a plurality of binary sources responsive to said m-1 bits, each binary source of index i being associated with a probability of outputting a bit zero equal to pi. A symbol of the M-ASK constellation is obtained that is associated with the binary word formed by the m-1 bits as less significant bits and a bit obtained from the selected source as most significant bit. The symbol is finally transmitted to a receiver over a communication channel.

4. 发明申请

WO2022249510A1 THERMALLY IMPROVED PCB FOR SEMICONDUCTOR POWER DIE CONNECTED BY VIA TECHNIQUE AND ASSEMBLY USING SUCH PCB 审中-公开
公开(公告)号：WO2022249510A1
公开(公告)日：2022-12-01
申请号：PCT/JP2021/038848
申请日：2021-10-14
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
发明人： PERRIN, Remi , BRANDELERO, Julio
IPC分类号： H01L23/367 , H01L23/498 , H01L23/538
摘要： Power module comprising a power semiconductor die and at least one substrate comprising an insulating layer in contact with a metallized connection surface of said die and at least one conductive path on a conductive layer on a face of the insulating layer opposite to the metallized connection surface of the die and wherein said insulating layer comprises vias filled with conductive material to provide connecting pads between said metallized connection surface of said die and said conductive path, and wherein said vias are arranged with a decreasing density from at least one hot spot position of said metallized connection surface when the die is in operation to a peripheral area of said metallized connection surface.

5. 发明申请

WO2022209030A1 COMPUTER IMPLEMENTED METHOD FOR ESTIMATING INTERFERERS OF RADIOFREQUENCY SYSTEM, COMPUTER PROGRAM, AND DEVICE 审中-公开
公开(公告)号：WO2022209030A1
公开(公告)日：2022-10-06
申请号：PCT/JP2021/045432
申请日：2021-12-03
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE ENROPE B.V.
发明人： NGUYEN, Viet Hoa , GRESSET, Nicolas
IPC分类号： H04W4/029 , H04W4/42 , H04W24/10 , G01S5/02
摘要： The invention relates to the estimation of interferers of a radiofrequency system embarked in a moving vehicle having a known trajectory at each time n, with a non overlapping condition between the interferers considered as K independent active sources of interference having respective positions θ = [θ1.., θk,.. θκ], comprising steps of: - Obtaining observations Zn corresponding to measurement of interference from time instant 1 to N, and building an observation vector Z = [Z1,..,Zn,..,ZN], - Defining a latent variable Vn indicating which source is activated at moment n, to build a vector of latent variables V = [V1,..,Vn,..,VN], and - Implementing a Dirichlet process involving a Gibbs sampling with a Markov chain defined by vector V = [V1,..,Vn,..,VN], the sampling being repeated as follows until convergence: For n = 1,... N, if the observation Zn is already associated to a source (S3), remove (S4) observation Zn from its current associated source corresponding to latent variable Vn, and retrieve a position posterior of this source as the observation Zn is no longer belonging to this source; Draw (S5) a new value of latent variable Vn, based on a conditional probability P(Vn = k|V-n, Z-n',Zn) depending on whether a source k pre- existed or not; Associate (S8) the observation Zn to the source corresponding to latent variable Vn, and update the posterior distribution of the position for the source corresponding to latent variable Vn, - and, upon convergence of the algorithm, operating thereby a separation of the interfering sources into K independent measurement sets related respectively to the K interfering sources, and an estimation of each source position with the sources thus separated.

6. 发明申请

WO2022208936A8 METHOD FOR LEARNING QOS PERFORMANCE INTER-DEPENDENCE OF COMMUNICATION LINK 审中-公开
公开(公告)号：WO2022208936A8
公开(公告)日：2022-10-06
申请号：PCT/JP2021/034922
申请日：2021-09-15
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
发明人： LI, Qianrui , BONNEVILLE, Hervé , GRESSET, Nicolas , CHARAF, Akl
IPC分类号： H04W28/16 , H04L45/12 , H04L45/123 , H04W28/0268 , H04W28/24
摘要： 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 (Ii, lj) among the plurality of communication links; - generating training requests respectively for each selected link (Ii, lj); - measuring QoS performance on each selected link (Ii, lj) for the training requests; and - combining the measured QoS performance of the selected links, so as to obtain the QoS performance inter-dependence (( Q1f, Q1j),..., (QNf, QNj) ) between the selected links (Ii, lj).

7. 发明申请

WO2022185563A1 METHOD FOR MEASURING DEGRADATION OF THERMAL RESISTANCE BETWEEN POWER SEMICONDUCTOR AND HEAT SINK, AND CONTROL DEVICE FOR POWER SEMICONDUCTOR 审中-公开
公开(公告)号：WO2022185563A1
公开(公告)日：2022-09-09
申请号：PCT/JP2021/027439
申请日：2021-07-15
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
发明人： BRANDELERO, Julio , PICHON, Pierre-Yves
IPC分类号： G01K7/01 , G01K17/00
摘要： Provided is a method for measuring degradation of a thermal resistance RTh between a power semiconductor in a power module assembly and a heat sink of said power module assembly where said power semiconductor has an internal gate resistance, comprising measuring a first initial parameter, K0, related to the power semiconductor junction temperature at a stable operating temperature, heating the internal gate resistance and measuring a second initial parameter, K1, related to the junction temperature after said heating, and saving the first and second initial parameters K0 and K1 in a memory, after discrete time intervals d1,..., dn during the lifetime of the power module assembly measuring a first subsequent parameter, K0d,..., K0dn, related to the power semiconductor junction temperature at a stable operating temperature T0d1,... T0dn, heating the internal gate resistance and measuring a second subsequent parameter, K1d,..., K1dn related to the junction temperature T1d1,... T1dn after said heating, and calculating a thermal resistance degradation, ΔRTh with the subsequent parameters related to junction temperature and the initial parameters as read from the memory and comparing ΔRTh with a limit value ΔRTh max and raising a fault flag in case ΔRTh is above said limit value.

8. 发明申请

WO2022180884A1 METHOD, DEVICE, AND SYSTEM FOR MONITORING CONDITION OF MOTOR 审中-公开
公开(公告)号：WO2022180884A1
公开(公告)日：2022-09-01
申请号：PCT/JP2021/026713
申请日：2021-07-09
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
发明人： VOYER, Nicolas , ROJKO, Andreja
IPC分类号： G01R31/327 , G01R31/34
摘要： Provided are a method and a device for monitoring the condition of a motor, the motor being driven by a power source that provides signals to the motor. The device senses a motor signal and detects predetermined operating conditions of the motor, and if the motor operates in predetermined conditions, detects the instants of zero-crossing of the sensed signal, determines the time intervals between two zero-crossing instants, estimates plural envelopes of the determined time intervals in order to obtain an estimated pattern of envelopes, each envelope being determined over a number of determined time intervals, and determines from the operating conditions of the motor and the pattern of envelopes if the motor has a fault and/or a level of the fault.

9. 发明申请

WO2022176369A1 COMPUTER IMPLEMENTED METHOD FOR CHECKING CORRECTNESS OF PLC PROGRAM 审中-公开
公开(公告)号：WO2022176369A1
公开(公告)日：2022-08-25
申请号：PCT/JP2021/046897
申请日：2021-12-14
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
发明人： COUSINEAU, Denis , FAISSOLE, Florian , MENTRE, David , INOUE, Hiroaki
IPC分类号： G06F11/36 , G05B19/042
摘要： The present invention is related to a method for checking correctness of a PLC program described by functional specifications typically presented as a timing chart. The method comprises: - S1 : translating the PLC program into a model, - S2: translating the timing chart and integrating said timing chart into the model, - S3: computing abstract semantics, to infer information eventually missing in the timing chart, - S4: predicating transformation, and deducing properties to be verified, from the model and from predefined PLC formalized instructions, in order to satisfy timing chart verification, - S5: solving and checking whether said properties are always verified, or providing counter-examples, - S6: translating said counter-examples into PLC model errors events initial configurations, - S7: simulating execution, - S8: assembling states and events executions variables values, and - S9: translating back to PLC program.

10. 发明申请

WO2022153577A1 METHOD AND DEVICE FOR MAKING INTEGRATED COOLING LIQUID CAVITY IN PRINTED CIRCUIT BOARD 审中-公开
公开(公告)号：WO2022153577A1
公开(公告)日：2022-07-21
申请号：PCT/JP2021/024051
申请日：2021-06-17
申请人： MITSUBISHI ELECTRIC CORPORATION , MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
发明人： MORAND, Julien , MOLLOV, Stefan
IPC分类号： H01L23/473 , H05K3/46 , H01L23/538 , H01L23/498
摘要： The present invention concerns a method and a device for making an integrated cooling liquid cavity in a printed circuit board by inserting a power semiconductor die in a dielectric material, laminating the dielectric material with a dielectric material and a thin electrically conducting layer on each side of the dielectric material, drilling vias through the laminated copper and dielectric layers, metallizing the vias in order to form a first printed circuit board, laminating a dielectric material, a soluble material having a predetermined form and an electrically conducting layer on the first printed circuit board, injecting solvent in the soluble material in order to dissolve the soluble material and reveal a cavity injecting cooling liquid in the revealed cavity.

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