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公开(公告)号:WO2023061479A1
公开(公告)日:2023-04-20
申请号:PCT/CN2022/125370
申请日:2022-10-14
申请人: OPPO广东移动通信有限公司
摘要: 一种压电驱动器、成像模组以及电子设备,压电驱动器(100)包括压电体(110)及驱动体(120),压电体(110)包括相背的第一端面(111)和第二端面(112),第一端面(111)包括至少两个电极区域,至少两个电极区域中的至少一者用于被施加交流激励电信号以使压电体(110)产生弯-切特征模态,第二端面(112)用于固定至待安装面,压电体(110)沿第一端面(111)到第二端面(112)的方向极化,驱动体(120)设置于第一端面(111),并连接于至少两个电极区域,驱动体(120)用于与待驱动体摩擦接触,以在压电体(110)产生弯-切特征模态时驱动待驱动体运动。上述结构,克服了传统方式中采用弹簧预紧的压电驱动器所存在的设计制作复杂、固定约束方式不稳定的问题,减小了压电驱动器的尺寸、有利于压电驱动器应用于小型化精密器件的驱动。
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公开(公告)号:WO2023025392A1
公开(公告)日:2023-03-02
申请号:PCT/EP2021/073662
申请日:2021-08-26
申请人: ABB SCHWEIZ AG
发明人: KRYNISKI, Krystof , SAARINEN, Kari
IPC分类号: B66D1/54 , G01M13/045 , G01R31/34
摘要: A method for monitoring a condition of a hoist is described. The hoist includes a motor driving a shaft of the hoist and a variable-frequency drive for controlling the motor. The method includes: measuring (102) an output frequency of the variable-frequency drive, measuring (104) vibration signals on the hoist, and extracting (106) state variables from the measured vibration signals. The state variables include excitation parameters for excitations at selected frequencies, the selected frequencies being determined based on the measured output frequency. The method further includes determining (108) at least one key performance indicator for the hoist, based on the extracted state variables
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公开(公告)号:WO2023277936A1
公开(公告)日:2023-01-05
申请号:PCT/US2021/050460
申请日:2021-09-15
IPC分类号: G01R31/34 , B60L3/00 , G01R19/00 , G01R19/165 , G01R31/30
摘要: The disclosed technology provides solutions for validating operation of a sensor assembly by performing an assembly test. In some aspects, a process of performing the assembly test includes steps for collecting motor controller measurements, wherein the motor controller measurements include an amount of current supplied to a motor coupled when performing a sensor sweep, calculating an average current drawn by the motor based on the current measurements, and calculating a peak current drawn by the motor based on the current measurements. In some aspects, the process can further include steps for determining if the sensor assembly passes the sensor assembly test based on the average current drawn and the peak current drawn. Systems and machine-readable media are also provided.
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公开(公告)号:WO2022242089A1
公开(公告)日:2022-11-24
申请号:PCT/CN2021/133160
申请日:2021-11-25
申请人: 中国第一汽车股份有限公司
摘要: 本文公开了一种双电机混合动力系统的相位角标定方法、装置及车辆,该方法包括:获取驱动电机及启动发电电机的标定关联信号,标定关联信号包括控制模块和诊断工具发出的信号;利用整车控制器判断标定关联信号是否满足预设标定条件;若标定关联信号满足驱动电机标定条件,则驱动电机控制器控制驱动电机运行,并对驱动电机的旋变零位相位角进行标定,确定驱动电机的第一初始相位角;若标定关联信号满足启动发电电机标定条件,则启动发电电机控制器对启动发电电机的旋变零位相位角进行标定,确定启动发电电机的第二初始相位角。
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公开(公告)号:WO2022195594A1
公开(公告)日:2022-09-22
申请号:PCT/IL2022/050301
申请日:2022-03-16
申请人: ALMOG, Boaz , ZOHAR, Guy
发明人: ALMOG, Boaz , ZOHAR, Guy
IPC分类号: G01R31/34 , G05B19/042 , G05B23/02 , H02P29/04
摘要: A condition-based monitoring (CBM) module for monitoring machine operation and for detecting anomalies in the machine in real time, a system and a method of using the same. The condition-based monitoring (CBM) module comprises at least: a CPU, memory, at least one onboard sensor, and a communication module. The condition- based monitoring (CBM) module may comprise a processing program for processing sensory data and for detecting and analyzing anomalies in real time. The condition-based monitoring (CBM) module transmit data, raw sensory data and/or processed data, to a cloud/local server for further processing, i.e., for detection and diagnosis of asset anomalies in real time.
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公开(公告)号:WO2022162924A1
公开(公告)日:2022-08-04
申请号:PCT/JP2021/003441
申请日:2021-02-01
申请人: 三菱電機株式会社
IPC分类号: G01R31/319 , G01R31/34 , G01R19/00
摘要: センサ回路(3)は、配線(23)に接続された検出用抵抗と、検出用抵抗の両方の端部にそれぞれ接続された端子配線によって構成された第1の端子対(31)と、検出用抵抗の一方の端部において互いにショートされた端子配線によって構成された第2の端子対(32)と、第1の端子対(31)を通じて入力された検出信号と、第2の端子対(32)を通じて入力された検出信号とを用いて、ノイズ成分を除去した電流または電圧を測定するセンシング部(33)を備える。
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公开(公告)号:WO2022152993A1
公开(公告)日:2022-07-21
申请号:PCT/FR2022/050022
申请日:2022-01-05
发明人: ROUHANA, Najib , TALA KUATE, Frank
摘要: Le présent document concerne un procédé de détection de défauts de court-circuit comportant les étapes consistant à : mesurer un vecteur courant (ix) et une vitesse de rotation d’un rotor de la machine électrique (ωelec) dans un premier repère (abc) tridimensionnel; exprimer le vecteur courant (ix) dans un deuxième repère (αβ); exprimer le vecteur courant (iαβ) dans un troisième repère (dq) bidimensionnel; détecter un rang d’harmonique afin d’obtenir un signal (I.); filtrer ledit signal (II. ); calculer une norme dudit signal filtré de façon à obtenir un signal filtré et normé (III); filtrer à nouveau le signal filtré et normé (IV.|) afin d’obtenir une partie utile de l’information (V.); comparer la partie utile de l’information (VI.) à un seuil de déclenchement de défaut de court-circuit.
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公开(公告)号:WO2022108866A1
公开(公告)日:2022-05-27
申请号:PCT/US2021/059324
申请日:2021-11-15
摘要: Disclosed is a ripple counter (200) with a dynamic bandpass filter for a DC motor. The ripple counter includes a current sense amplifier (210) configured to provide an analog voltage responsive to an inline current in rotor windings of the DC motor. The ripple counter also includes an analog-to-digital converter (214) configured to provide a digital signal responsive to the analog voltage. The ripple counter also includes a digital filter (218) configured to receive the digital signal and a clock signal and configured to vary a frequency response to provide a filtered ripple current. The ripple counter also includes a digital comparator circuit (224) configured to receive the filtered ripple current and to provide a pulsed output. The ripple counter also includes a clock generator (228) configured to detect the frequency of the pulsed output and to provide the clock signal responsive to the detected frequency.
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公开(公告)号:WO2022092496A1
公开(公告)日:2022-05-05
申请号:PCT/KR2021/009430
申请日:2021-07-21
申请人: 경북대학교 산학협력단
发明人: 구본관
摘要: 본 발명은 유도 전동기와, 상기 유도 전동기의 입력단으로 전원을 공급하는 공급 라인 상에 흐르는 전류를 검출하여 상기 유도 전동기의 고장 여부를 판단하는 고장 검출부를 포함하고, 상기 고장 검출부는 다이나믹 모델을 적용하여 상기 유동 전동기의 고장 여부를 판단할 수 있는 유도 전동기의 턴 쇼트 고장 진단 장치 및 방법에 관한 것이다.
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