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    • 6. 发明授权
    • Brushless DC motor drive apparatus
    • 无刷直流电机驱动装置
    • US5780983A
    • 1998-07-14
    • US623347
    • 1996-03-27
    • Osamu ShinkawaAkihito Uetake
    • Osamu ShinkawaAkihito Uetake
    • H02P6/08H02P6/18A02P6/02
    • H02P6/085H02P6/182
    • A brushless DC motor drive apparatus according to the invention comprises a stator and a rotor, the stator including multi-phase armature windings which are connected in a star formation and generate a plurality of terminal voltages at respective terminals of the armature windings, and the rotor including a plurality of permanent magnets which form pairs of magnetic poles. The motor drive apparatus also includes an inverter coupled to the rotor for adjusting the speed of the rotor, a rotor position detection means for detecting the terminal voltages generated in the armature windings and for generating a position signal indicative of a magnetic pole position of the rotor. The rotor position detection means includes a line voltage generation means for generating line voltages corresponding to the terminal voltages of the armature windings and comparison means for comparing signals derived from the line voltages in predetermined combinations and outputting comparison signals as the positional signal. The motor drive apparatus also includes a drive control means for controlling and driving the inverter according to the position signal generated by the rotor position detection means, the drive control means including PWM (Pulse Width Modulation) chopper control means for generating a PWM chopper control signal to control the inverter. The motor drive apparatus according to the present invention can always detect accurate rotor position without being affected by the rotational frequency or load of the brushless DC motor. Furthermore, the motor drive apparatus can easily expand the operational range of a brushless DC motor, particularly that of a brushless DC motor possessing an embedded magnet-type rotor structure. Additionally, the motor drive apparatus can easily and accurately operate a brushless DC motor according to its motor characteristics and control method.
    • 根据本发明的无刷直流电机驱动装置包括定子和转子,所述定子包括以星形连接并在电枢绕组的各个端子处产生多个端子电压的多相电枢绕组,并且转子 包括形成磁极对的多个永磁体。 马达驱动装置还包括与转子相连的用于调节转子速度的变换器,转子位置检测装置,用于检测在电枢绕组中产生的端电压,并产生指示转子的磁极位置的位置信号 。 转子位置检测装置包括用于产生对应于电枢绕组的端子电压的线电压的线电压产生装置和用于比较以预定组合从线电压得到的信号并输出​​比较信号作为位置信号的比较装置。 电机驱动装置还包括驱动控制装置,用于根据转子位置检测装置产生的位置信号来控制和驱动逆变器,驱动控制装置包括PWM(脉宽调制)斩波控制装置,用于产生PWM斩波控制信号 控制变频器。 根据本发明的电机驱动装置可以始终检测精确的转子位置,而不受无刷直流电动机的转速或负载的影响。 此外,电动机驱动装置可以容易地扩大无刷直流电动机的工作范围,特别是具有嵌入式磁体型转子结构的无刷直流电动机的工作范围。 此外,电机驱动装置可以根据其电机特性和控制方法容易且精确地操作无刷直流电动机。
    • 8. 发明授权
    • Superdirectional acoustic system and projector
    • 超声波系统和投影机
    • US08130973B2
    • 2012-03-06
    • US11630590
    • 2005-06-20
    • Akihito UetakeKinya Matsuzawa
    • Akihito UetakeKinya Matsuzawa
    • H04B3/00H04R3/00H04R25/00H04R1/20
    • H04R1/323G10K15/02H04R27/00H04R2217/03
    • A superdirectional acoustic system for reproducing a sound signal supplied from a real sound source by using a superdirectional speaker and producing a virtual sound source in a vicinity of a sound wave reflection surface. The system includes an ultrasonic speaker, which includes an ultrasonic transducer for oscillating a sound wave in an ultrasonic frequency band, for reproducing an audio signal in a relatively medium to high frequency sound range, which is included in the sound signal supplied from the real sound source; and a low frequency sound reproducing speaker for reproducing an audio signal in a relatively low frequency sound range, which is included in the sound signal supplied from the real sound source. Sound in the medium-high frequency range is reproduced in a manner such that the sound is produced from a virtual sound source which is formed in the vicinity of the sound signal reflection surface such as a screen.
    • 一种用于通过使用超方向扬声器再现从真实声源提供的声音信号并在声波反射表面附近产生虚拟声源的超向声学系统。 该系统包括超声波扬声器,该超声波扬声器包括用于振荡超声波频带中的声波的超声波换能器,用于再现由相对中频到高频声音范围的音频信号,该音频信号包括在从真实声音提供的声音信号中 资源; 以及低频声音再现扬声器,用于再现包含在从真实声源提供的声音信号中的相对低频率的声音范围内的音频信号。 再现中高频范围的声音,使声音从形成在诸如屏幕的声音信号反射面附近的虚拟声源产生。
    • 9. 发明申请
    • Ultrasonic transducer, ultrasonic speaker, and method of controlling the driving of ultrasonic transducer
    • 超声波换能器,超声波扬声器以及超声波传感器驱动控制方法
    • US20050281419A1
    • 2005-12-22
    • US11155023
    • 2005-06-16
    • Shinichi MiyazakiAkihito Uetake
    • Shinichi MiyazakiAkihito Uetake
    • A61B8/00B06B1/02H02N1/00H04R25/00
    • B06B1/0292H02N1/006
    • An electrostatic ultrasonic transducer includes a diaphragm having a conducting layer and a pair of first and second fixed electrodes opposed to the corresponding surfaces of the diaphragm, the pair of fixed electrodes having a plurality of through holes in corresponding positions, wherein a DC bias voltage is applied to the conducting layer of the diaphragm and an alternating current signal is applied between the first and second fixed electrodes to generate an ultrasonic wave. Part of the pair of fixed electrodes includes s driving fixed electrode for driving the ultrasonic transducer, and the other part includes a detecting fixed electrode for detecting the amplitude of the diaphragm. The ultrasonic transducer includes a control unit that controls the vibration of the diaphragm so that the amplitude is proportional to the input signal based on the amplitude of the diaphragm detected by the detecting fixed electrode.
    • 静电超声波换能器包括具有导电层的隔膜和与隔膜的相应表面相对的一对第一和第二固定电极,该对固定电极在相应位置具有多个通孔,其中直流偏置电压为 施加到隔膜的导电层,并且在第一和第二固定电极之间施加交流信号以产生超声波。 一对固定电极的一部分包括用于驱动超声波换能器的驱动固定电极,另一部分包括用于检测振膜振幅的检测固定电极。 超声波换能器包括控制单元,该控制单元基于由检测固定电极检测到的振膜的振幅来控制振动膜的振动,使得振幅与输入信号成比例。
    • 10. 发明授权
    • Recycling job supporting system, recycling center equipment, information management center equipment, equipment program, and recycling job supporting method
    • 回收作业配套系统,回收中心设备,信息管理中心设备,设备方案,回收作业配套方式
    • US06952625B2
    • 2005-10-04
    • US10686030
    • 2003-10-15
    • Akihito UetakeYoshiki FukuiMitsugu IguraHaruhiko BabaTakeshi Ishikawa
    • Akihito UetakeYoshiki FukuiMitsugu IguraHaruhiko BabaTakeshi Ishikawa
    • G06F19/00G06Q50/00G06Q50/10
    • G06Q10/00Y10T29/49815
    • A recycling job supporting system is provided which is capable of efficiently carrying out a disassembly job. Information management center equipment 100 has an object disassembly information register DB 40 in which the object disassembly information is registered by associating the object disassembly information with object identification information, retrieves the object disassembly information from the object disassembly information register DB 40 based on the received object identification information when receiving the object identification information, and transmits the object disassembly information found through the retrieval to recycling center equipment 200. The recycling center equipment 200 reads out the object identification information from the recycling object 70, transmits the read-out object identification information to the information management center equipment 100, constructs any one of a plurality of disassembly diagrams capable of being constructed through the received object disassembly information depending on a progress condition of the disassembly job of the recycling object 70 when receiving the object disassembly information through the transmission, and then displays the constructed disassembly diagram in a display unit 68.
    • 提供了能够有效地进行拆卸作业的再循环作业辅助系统。 信息管理中心设备100具有物体拆卸信息寄存器DB40,其中通过将对象拆卸信息与对象识别信息相关联来登记对象拆卸信息,基于所接收的对象从对象拆卸信息寄存器DB40检索对象拆卸信息 识别信息,并且将通过检索找到的对象拆卸信息发送到再循环中心设备200。 再循环中心设备200从再循环对象70读取对象识别信息,将读出的对象识别信息发送到信息管理中心设备100,构建能够通过接收对象构建的多个解组图中的任一个 根据通过变速器接收到对象拆卸信息时的再循环对象70的拆卸作业的进行状态的拆卸信息,然后将构成的拆卸图显示在显示单元68中。