Angle-calculation apparatus and angle-calculation method for three-phase optical encoder
    1.
    发明授权
    Angle-calculation apparatus and angle-calculation method for three-phase optical encoder 有权
    三相光学编码器的角度计算装置和角度计算方法

    公开(公告)号:US07612326B2

    公开(公告)日:2009-11-03

    申请号:US11845234

    申请日:2007-08-27

    CPC classification number: G01D5/3473 H03M1/485

    Abstract: An angle-calculation apparatus for three-phase optical encoder receives three-phase sinusoidal signals 120 degree phase from the optical encoder and obtains angle information for a motor rotor. The angle-calculation apparatus includes an A/D converter, a digital signal processor (DSP), a phase digitalizer and a digital counter. The A/D converter converts three-phase analog signals of the optical encoder into three-phase digital signals. The phase digitalizer converts the three-phase analog signals into digital phase signals. The digital counter generates a counting value based on the digital phase signals. The DSP performs an inverse trigonometric function calculation on a relatively linear region of the three-phase digital signals to obtain the angle information. The DSP obtains the rotation turn number and rotation direction of the motor rotor according to the counting value.

    Abstract translation: 用于三相光学编码器的角度计算装置从光学编码器接收120度相位的三相正弦信号,并获得电机转子的角度信息。 角度计算装置包括A / D转换器,数字信号处理器(DSP),相位数字化器和数字计数器。 A / D转换器将光学编码器的三相模拟信号转换为三相数字信号。 相位数字化器将三相模拟信号转换为数字相位信号。 数字计数器基于数字相位信号产生计数值。 DSP在三相数字信号的相对线性区域上执行反三角函数计算,以获得角度信息。 DSP根据计数值获得电机转子的旋转转数和旋转方向。

    Absolute type encoder apparatus and method for operating the same
    2.
    发明授权
    Absolute type encoder apparatus and method for operating the same 有权
    绝对型编码器装置及其操作方法

    公开(公告)号:US07547875B1

    公开(公告)日:2009-06-16

    申请号:US12128869

    申请日:2008-05-29

    CPC classification number: G01D5/24447 G01D5/3473

    Abstract: A high-precision absolute type encoder apparatus includes a controller electrically connected to an incremental type encoder and generating a control signal to the incremental type encoder, a comparator electrically connected to outputs of the incremental type encoder and generating first pulse signals, a latch unit electrically connected to outputs of the comparator and generating second pulse signals by latching the generating first pulse signals. When power failure occurs, the controller generates the control signal as successive pulses with predetermined period to drive the latch unit and the incremental type encoder. Therefore, the controller knows angular information of the incremental type encoder by counting the second pulse signals. The absolute angular information can be obtained by combining the angular information and an initial position after power failure.

    Abstract translation: 一种高精度绝对型编码器装置,包括电连接到增量式编码器的控制器,并向增量型编码器产生控制信号;电连接到增量式编码器的输出并产生第一脉冲信号的比较器, 连接到比较器的输出端,并通过锁存生成的第一脉冲信号产生第二脉冲信号。 当发生电源故障时,控制器以预定周期的连续脉冲产生控制信号,以驱动锁存单元和增量式编码器。 因此,控制器通过对第二脉冲信号进行计数来知道增量式编码器的角度信息。 绝对角度信息可以通过组合角度信息和断电后的初始位置来获得。

    Wire-saving optical encoder having servomotor identification information
    3.
    发明授权
    Wire-saving optical encoder having servomotor identification information 有权
    具有伺服电机识别信息的节省光学编码器

    公开(公告)号:US07227329B1

    公开(公告)日:2007-06-05

    申请号:US11399320

    申请日:2006-04-07

    CPC classification number: G05B19/19 G05B2219/37149

    Abstract: A wire-saving optical encoder having servomotor identification information is applied to a wire-saving transmission design to provide a circuit and a method for processing servomotor identification information and encoded feedback control signals. With a microprocessor, a multiplexer and the servomotor identification information stored in the microprocessor, an output device and a driver for the feedback signals of the encoder constitute a wire-saving signal transmitting circuit. The microprocessor and multiplexer switch a signal transmission mode to transmit the servomotor identification information and phase change signal produced by the servomotor control parameters stored in a firmware by a serial output mode, and the same transmitting wire is used to transmit a rotor operating signal after the transmitting mode is switched, so as to save wires and lower costs for transmitting feedback signals and correctly identifying and effectively controlling a servomotor.

    Abstract translation: 具有伺服电机识别信息的线路保护光学编码器被应用于线路传输设计,以提供用于处理伺服电机识别信息和编码的反馈控制信号的电路和方法。 利用微处理器,存储在微处理器中的多路复用器和伺服电动机识别信息,用于编码器的反馈信号的输出装置和驱动器构成线路保存信号发送电路。 微处理器和多路复用器切换信号传输模式,以通过串行输出模式传输由存储在固件中的伺服电动机控制参数产生的伺服电动机识别信息和相变信号,并且使用相同的发送线来传输转子操作信号 传输模式切换,节省电线,降低传输反馈信号的成本,正确识别和有效控制伺服电机。

    EARLY-WARNING APPARATUS FOR HEALTH DETECTION OF SERVO MOTOR AND METHOD FOR OPERATING THE SAME
    4.
    发明申请
    EARLY-WARNING APPARATUS FOR HEALTH DETECTION OF SERVO MOTOR AND METHOD FOR OPERATING THE SAME 有权
    伺服电机健康检测的早期警告装置及其操作方法

    公开(公告)号:US20110307093A1

    公开(公告)日:2011-12-15

    申请号:US12814791

    申请日:2010-06-14

    CPC classification number: G05B19/4062 G05B2219/37432 G05B2219/37435

    Abstract: An early-warning apparatus for health detection of a servo motor and a method for operating the same are applied to estimate vibration phenomenon of a CNC tool machine. First, a vibration signal is produced through a vibration detecting unit. Afterward, the vibration signal is sequentially sent to a data buffer. Afterward, the vibration signal is transformed in time and frequency domains through a time-frequency transforming unit. Finally, a deterioration index is calculated through a deterioration index calculating unit to obtain a health index which is calculated through a health index calculating unit. Therefore, the build-in vibration detecting unit is provided to dispense with additional external sensors. Furthermore, the vibration phenomenon of the servo motor of the CNC tool machine is estimated according to the health index, thus analyzing non-linear and non-stationary characteristics of the estimated vibration phenomenon.

    Abstract translation: 应用用于伺服电机的健康检测的预警装置及其操作方法来估计CNC工具机的振动现象。 首先,通过振动检测单元产生振动信号。 之后,振动信号依次发送到数据缓冲器。 之后,振动信号通过时频变换单元在时域和频域中变换。 最后,通过劣化指标计算单元计算劣化指数,以获得通过健康指标计算单元计算的健康指数。 因此,内置振动检测单元被设置为省去附加的外部传感器。 此外,根据健康指标估算CNC工具机伺服电机的振动现象,从而分析估计振动现象的非线性和非平稳特性。

    Optical encoder and controller for the same
    5.
    发明申请
    Optical encoder and controller for the same 审中-公开
    光学编码器和控制器相同

    公开(公告)号:US20070045525A1

    公开(公告)日:2007-03-01

    申请号:US11211621

    申请日:2005-08-26

    CPC classification number: G01D5/3473 G01D5/24404 H03M1/202 H03M1/303

    Abstract: An optical encoder includes a controller electrically connected to an optical sensor to discriminate displacement information of a glass disc. The controller comprises a pair of analog amplifiers for amplifying quadrature periodical output signals of the optical sensor, a pair of A/D converters electrically connected to the analog amplifiers for digitalizing the output of the analog amplifiers, a pair of hysteresis comparators electrically connected to the optical sensor for performing hysteresis comparison for the output of the optical sensor, an up/down counter electrically connected to the pair of hysteresis comparators for up/down counting the output of the hysteresis comparators and a firmware unit electrically connected to the pair of A/D converters and the up/down counter for performing interpolation for the quadrature periodical output signals and counting for the hysteresis compared signals. Therefore, optical encoded result of higher resolution can be achieved.

    Abstract translation: 光学编码器包括电连接到光学传感器以控制玻璃盘的位移信息的控制器。 控制器包括一对模拟放大器,用于放大光学传感器的正交周期输出信号,一对A / D转换器,电连接到模拟放大器,用于数字化模拟放大器的输出;一对磁滞比较器,电连接到 光传感器,用于对光学传感器的输出执行滞后比较;电连接到该对滞后比较器的上/下计数器,用于对迟滞比较器的输出进行上/下计数;以及固定单元,电连接到该对A / D转换器和用于对正交周期性输出信号执行内插的向上/向下计数器,并对滞后比较信号进行计数。 因此,可以实现更高分辨率的光编码结果。

    Method and apparatus for tracking servo system
    7.
    发明授权
    Method and apparatus for tracking servo system 失效
    跟踪伺服系统的方法和装置

    公开(公告)号:US06842407B2

    公开(公告)日:2005-01-11

    申请号:US09932648

    申请日:2001-08-17

    CPC classification number: G11B7/0901

    Abstract: The present invention provides a method for guiding a pick-up head to follow an information track. The method comprises the steps of sensing and sending notification of displacement between the pick-up head and the center of the information track, generating a first correction directly proportional to the displacement, generating from the first correction a second correction non-proportional to the displacement, generating a third correction from an amplified tracking error signal and generating a driving force proportional to the sum of the second and third corrections, driving the pick-up head to follow the information track.

    Abstract translation: 本发明提供一种用于引导拾取头跟随信息轨道的方法。 该方法包括以下步骤:感测并发送拾取头与信息轨道的中心之间的位移通知,产生与位移成正比的第一校正,从第一校正产生与位移成比例的第二校正 从放大的跟踪误差信号产生第三校正,并产生与第二和第三校正的和成比例的驱动力,驱动拾取头跟随信息轨道。

    METHODS OF FABRICATING POROUS MEDIA AND INORGANIC SELECTIVE MEMBRANE
    8.
    发明申请
    METHODS OF FABRICATING POROUS MEDIA AND INORGANIC SELECTIVE MEMBRANE 审中-公开
    制备多孔介质和无机选择膜的方法

    公开(公告)号:US20130156949A1

    公开(公告)日:2013-06-20

    申请号:US13476024

    申请日:2012-05-21

    CPC classification number: B01D69/10 B01D53/228 B01D71/022

    Abstract: A method of fabricating a porous media is provided. In the method, a metal mesh is provided. The metal mesh includes interlaced metal wires, and first holes are formed among the metal wires. An area of each first hole ranges from 1 μm2 to 10,000 μm2, and an area error between the first holes is less than 5%. A metal layer covers the metal wires, so as to form the porous media with second holes. By controlling the thickness of the metal layer, an area of each second hole is reduced to 0.01 μm2 to 1 μm2, and an area error between the second holes is less than 5%.

    Abstract translation: 提供一种制造多孔介质的方法。 在该方法中,提供金属网。 金属网包括隔行金属线,并且在金属线之间形成第一孔。 每个第一孔的面积为1m2〜10000mum2,第一孔之间的面积误差小于5%。 金属层覆盖金属线,以形成具有第二孔的多孔介质。 通过控制金属层的厚度,每个第二孔的面积减少到0.01mum2至1mum2,并且第二孔之间的面积误差小于5%。

    Early-warning apparatus for health detection of servo motor and method for operating the same
    9.
    发明授权
    Early-warning apparatus for health detection of servo motor and method for operating the same 有权
    伺服电机健康检测预警装置及其运行方法

    公开(公告)号:US08346385B2

    公开(公告)日:2013-01-01

    申请号:US12814791

    申请日:2010-06-14

    CPC classification number: G05B19/4062 G05B2219/37432 G05B2219/37435

    Abstract: An early-warning apparatus for health detection of a servo motor and a method for operating the same are applied to estimate vibration phenomenon of a CNC tool machine. First, a vibration signal is produced through a vibration detecting unit. Afterward, the vibration signal is sequentially sent to a data buffer. Afterward, the vibration signal is transformed in time and frequency domains through a time-frequency transforming unit. Finally, a deterioration index is calculated through a deterioration index calculating unit to obtain a health index which is calculated through a health index calculating unit. Therefore, the build-in vibration detecting unit is provided to dispense with additional external sensors. Furthermore, the vibration phenomenon of the servo motor of the CNC tool machine is estimated according to the health index, thus analyzing non-linear and non-stationary characteristics of the estimated vibration phenomenon.

    Abstract translation: 应用用于伺服电机的健康检测的预警装置及其操作方法来估计CNC工具机的振动现象。 首先,通过振动检测单元产生振动信号。 之后,振动信号依次发送到数据缓冲器。 之后,振动信号通过时频变换单元在时域和频域中变换。 最后,通过劣化指标计算单元计算劣化指数,以获得通过健康指标计算单元计算的健康指数。 因此,内置振动检测单元被设置为省去附加的外部传感器。 此外,根据健康指标估算CNC工具机伺服电机的振动现象,从而分析估计振动现象的非线性和非平稳特性。

    ANGLE-CALCULATION APPARATUS AND ANGLE-CALCULATION METHOD FOR THREE-PHASE OPTICAL ENCODER
    10.
    发明申请
    ANGLE-CALCULATION APPARATUS AND ANGLE-CALCULATION METHOD FOR THREE-PHASE OPTICAL ENCODER 有权
    用于三相光学编码器的角度计算装置和角度计算方法

    公开(公告)号:US20090058349A1

    公开(公告)日:2009-03-05

    申请号:US11845234

    申请日:2007-08-27

    CPC classification number: G01D5/3473 H03M1/485

    Abstract: An angle-calculation apparatus for three-phase optical encoder receives three-phase sinusoidal signals 120 degree phase from the optical encoder and obtains angle information for a motor rotor. The angle-calculation apparatus includes an A/D converter, a digital signal processor (DSP), a phase digitalizer and a digital counter. The A/D converter converts three-phase analog signals of the optical encoder into three-phase digital signals. The phase digitalizer converts the three-phase analog signals into digital phase signals. The digital counter generates a counting value based on the digital phase signals. The DSP performs an inverse trigonometric function calculation on a relatively linear region of the three-phase digital signals to obtain the angle information. The DSP obtains the rotation turn number and rotation direction of the motor rotor according to the counting value.

    Abstract translation: 用于三相光学编码器的角度计算装置从光学编码器接收120度相位的三相正弦信号,并获得电机转子的角度信息。 角度计算装置包括A / D转换器,数字信号处理器(DSP),相位数字化器和数字计数器。 A / D转换器将光学编码器的三相模拟信号转换为三相数字信号。 相位数字化器将三相模拟信号转换为数字相位信号。 数字计数器基于数字相位信号产生计数值。 DSP在三相数字信号的相对线性区域上执行反三角函数计算,以获得角度信息。 DSP根据计数值获得电机转子的旋转转数和旋转方向。

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