Radiation characteristic measuring apparatus for laser diode
    1.
    发明授权
    Radiation characteristic measuring apparatus for laser diode 失效
    激光二极管辐射特性测量装置

    公开(公告)号:US4798950A

    公开(公告)日:1989-01-17

    申请号:US904122

    申请日:1986-09-04

    CPC分类号: H03G3/3084 G01J1/4257

    摘要: An apparatus for measuring a radiation characteristic of a laser diode. An AC signal and a step-like DC voltage are applied to the laser diode and the radiant power output thereof is received by a photodiode having an output to which a first amplifier, a transformer, a capacitor and an AC amplifier for extracting the AC signal. The apparatus further comprises a first switch connected between the input of the first amplifier and the capacitor, and a second switch connected between both ends of the transformer. Every time the step-like voltage is stepped up, the first and second switches are closed for a short time as compared with the duration of a step period to protect the measurement from the influence of the change in the DC voltage.

    摘要翻译: 一种用于测量激光二极管的辐射特性的装置。 将AC信号和阶梯状DC电压施加到激光二极管,并且其辐射功率输出由具有输出的光电二极管接收,第一放大器,变压器,电容器和AC放大器用于提取AC信号 。 该装置还包括连接在第一放大器的输入端和电容器之间的第一开关和连接在变压器的两端之间的第二开关。 每次步进电压升高时,与步进周期的持续时间相比,第一和第二开关闭合一段短时间,以保护测量免受直流电压变化的影响。

    CONTROL DEVICE FOR ROTARY MACHINE AND INDUCTANCE MEASUREMENT METHOD FOR ROTARY MACHINE
    2.
    发明申请
    CONTROL DEVICE FOR ROTARY MACHINE AND INDUCTANCE MEASUREMENT METHOD FOR ROTARY MACHINE 有权
    旋转机控制装置及旋转机电感测量方法

    公开(公告)号:US20140232314A1

    公开(公告)日:2014-08-21

    申请号:US14346030

    申请日:2011-11-29

    IPC分类号: H02P21/00

    CPC分类号: H02P21/0035 H02P21/16

    摘要: A control device for rotary machine includes: a voltage instruction generation section for generating a voltage instruction; a voltage application section for applying voltage to a rotary machine based on the voltage instruction; a current detection section for detecting rotary machine current of the rotary machine; and an inductance calculation section for calculating an inductance of the rotary machine from the voltage instruction and the rotary machine current. The voltage instruction generation section generates voltage instructions of constant DC voltages. The voltage application section applies voltages to the rotary machine based on the voltage instructions. The inductance calculation section calculates the inductance from a voltage instruction for measurement arbitrarily selected from the voltage instructions, and the rotary machine currents detected by the current detection section before and after application of the voltage instruction for measurement.

    摘要翻译: 旋转机械的控制装置包括:电压指令生成部,生成电压指令; 电压施加部,其基于所述电压指令向旋转机器施加电压; 用于检测旋转机械的旋转机器电流的电流检测部分; 以及电感计算部,用于根据电压指令和旋转电机电流计算旋转机的电感。 电压指令生成部生成恒定直流电压的电压指令。 电压施加部分基于电压指令向旋转机器施加电压。 电感计算部根据从电压指令任意选择的测量用电压指令和由施加电压指令进行测量之前和之后由电流检测部分检测的旋转电机,计算电感。

    Inductance measuring device and measuring method for synchronous motor
    3.
    发明授权
    Inductance measuring device and measuring method for synchronous motor 有权
    同步电机电感测量装置及测量方法

    公开(公告)号:US09335356B2

    公开(公告)日:2016-05-10

    申请号:US13884486

    申请日:2010-12-06

    IPC分类号: G01R27/28 G01R27/26 H02P21/14

    CPC分类号: G01R27/2611 H02P21/16

    摘要: [Problem]For measuring the inductance of a synchronous motor, a high-speed and convenient inductance measuring device for a synchronous motor is provided.[Solution]A three-phase high-frequency rotation voltage is applied to a synchronous motor, thereby calculating the inductance from the same frequency component as that of the high-frequency voltage included in a motor current.

    摘要翻译: [问题]为了测量同步电机的电感,提供了一种用于同步电机的高速便捷的电感测量装置。 [解决方案]将三相高频旋转电压施加到同步电动机,从而计算与包括在电动机电流中的高频电压相同的频率分量的电感。

    Optical fiber characteristic measuring device
    5.
    发明授权
    Optical fiber characteristic measuring device 失效
    光纤特性测量装置

    公开(公告)号:US5686986A

    公开(公告)日:1997-11-11

    申请号:US721575

    申请日:1996-09-25

    摘要: Coherent light emitted from a coherent light source 1 is sent as a probe beam through a connector 31 into an optical fiber being measured. A portion of this beam is sent to an optical frequency converter 100 to form an optical pulse train having a frequency which is frequency-swept in steps of a designated frequency at a designated periodicity, and an optical pulse having a designated frequency is extracted from the optical pulse train by an electro-optic switch 18 and sent to the optical fiber being measured. Then, a signal beam exiting the optical fiber being measured is heterodyne-received by means of a local beam passing through either a connecting optical fiber 6 side or a frequency shifter 7 side according to the selection of optical switches 4 and 5. Consequently, it is possible to measure the characteristics of the optical fiber by means of a BOTDR, BOTDA or a COTDR.

    摘要翻译: 从相干光源1发射的相干光作为探测光束通过连接器31发送到被测量的光纤中。 该光束的一部分被发送到光频变换器100以形成具有以指定周期以指定频率逐步扫频的频率的光脉冲序列,并且从该频率转换器提取具有指定频率的光脉冲 通过电光开关18将光脉冲串发送到被测量的光纤。 然后,根据光开关4和5的选择,通过本地光束通过连接光纤6侧或移频器7侧,离开被测光纤的信号光束被外差接收。因此, 可以通过BOTDR,BOTDA或COTDR测量光纤的特性。

    High-power light pulse generating apparatus
    6.
    发明授权
    High-power light pulse generating apparatus 失效
    大功率光脉冲发生装置

    公开(公告)号:US5309455A

    公开(公告)日:1994-05-03

    申请号:US910198

    申请日:1992-07-08

    摘要: A high-power light pulse generating apparatus in which an optical fiber doped with a rare earth element is used in an optical system for facilitating control and and adjustment of the apparatus. The light output power and the pulse width thereof can be varied simply by changing the characteristics and the length of the optical fiber. In the high-power light pulse generating apparatus, an output of an optical pumping light source (2) is inputted to an optical coupler (3) which constitutes an optical loop in cooperation with the optical fiber (1) doped with a rare earth element, an optical decoupler(4), an optical switch (5A), an isolator (7) and an input port of the optical coupler (3). By turning on the optical switch (5A), a high-power light pulse can be generated through the optical loop and extracted from an output port of the optical decoupler (4).

    摘要翻译: 在光学系统中使用掺杂有稀土元素的光纤的高功率光脉冲发生装置,用于便于控制和调节装置。 可以通过改变光纤的特性和长度来简单地改变光输出功率及其脉冲宽度。 在大功率光脉冲发生装置中,与掺杂有稀土元素的光纤(1)协作,将光泵浦光源(2)的输出输入到构成光环路的光耦合器(3) 光隔离器(4),光开关(5A),隔离器(7)和光耦合器(3)的输入端口。 通过接通光开关(5A),可以通过光环路产生高功率光脉冲并从光分离器(4)的输出端口提取。

    Control device for rotary machine and inductance measurement method for rotary machine
    7.
    发明授权
    Control device for rotary machine and inductance measurement method for rotary machine 有权
    旋转机控制装置及旋转机电感测量方法

    公开(公告)号:US09231510B2

    公开(公告)日:2016-01-05

    申请号:US14346030

    申请日:2011-11-29

    IPC分类号: H02P7/00 H02P21/00 H02P21/14

    CPC分类号: H02P21/0035 H02P21/16

    摘要: A control device for rotary machine includes: a voltage instruction generation section for generating a voltage instruction; a voltage application section for applying voltage to a rotary machine based on the voltage instruction; a current detection section for detecting rotary machine current of the rotary machine; and an inductance calculation section for calculating an inductance of the rotary machine from the voltage instruction and the rotary machine current. The voltage instruction generation section generates voltage instructions of constant DC voltages. The voltage application section applies voltages to the rotary machine based on the voltage instructions. The inductance calculation section calculates the inductance from a voltage instruction for measurement arbitrarily selected from the voltage instructions, and the rotary machine currents detected by the current detection section before and after application of the voltage instruction for measurement.

    摘要翻译: 旋转机械的控制装置包括:电压指令生成部,生成电压指令; 电压施加部,其基于所述电压指令向旋转机器施加电压; 用于检测旋转机械的旋转机器电流的电流检测部分; 以及电感计算部,用于根据电压指令和旋转电机电流计算旋转机的电感。 电压指令生成部生成恒定直流电压的电压指令。 电压施加部分基于电压指令向旋转机器施加电压。 电感计算部根据从电压指令任意选择的测量用电压指令和由施加电压指令进行测量之前和之后由电流检测部分检测的旋转电机,计算电感。

    INDUCTANCE MEASURING DEVICE AND MEASURING METHOD FOR
SYNCHRONOUS MOTOR
    8.
    发明申请
    INDUCTANCE MEASURING DEVICE AND MEASURING METHOD FOR SYNCHRONOUS MOTOR 有权
    电感测量装置和同步电动机的测量方法

    公开(公告)号:US20140002110A1

    公开(公告)日:2014-01-02

    申请号:US13884486

    申请日:2010-12-06

    IPC分类号: G01R27/26

    CPC分类号: G01R27/2611 H02P21/16

    摘要: [Problem]For measuring the inductance of a synchronous motor, a high-speed and convenient inductance measuring device for a synchronous motor is provided.[Solution]A three-phase high-frequency rotation voltage is applied to a synchronous motor, thereby calculating the inductance from the same frequency component as that of the high-frequency voltage included in a motor current.

    摘要翻译: [问题]为了测量同步电机的电感,提供了一种用于同步电机的高速便捷的电感测量装置。 [解决方案]将三相高频旋转电压施加到同步电动机,从而计算与包括在电动机电流中的高频电压相同的频率分量的电感。

    Process for production of molded glass article
    9.
    发明授权
    Process for production of molded glass article 失效
    生产模制玻璃制品的工艺

    公开(公告)号:US5141547A

    公开(公告)日:1992-08-25

    申请号:US657773

    申请日:1991-02-20

    摘要: A process for the production of a molded glass article is disclosed, said process comprises the steps of: applying wet treatment to a surface of a lead oxide-containing glass material, thereby forming a hydrated layer having a lower lead oxide content than that of a basic glass; heating the glass material having the hydrated layer; and press-molding the heated glass material. According to the process, a molded glass article having no cloudiness can be obtained and lead is not deposited on the surfaces of the molds used.

    摘要翻译: 公开了一种制造模制玻璃制品的方法,所述方法包括以下步骤:对含氧化铅的玻璃材料的表面进行湿处理,从而形成具有比氧化铅含量低的氧化铅含量低的水合层 基本玻璃 加热具有水合层的玻璃材料; 并加热加热的玻璃材料。 根据该方法,可以获得没有浑浊的模制玻璃制品,并且铅不会沉积在所使用的模具的表面上。