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    • 1. 发明授权
    • Automatic tuning of a position control circuit for a servo device
    • 自动调整伺服装置的位置控制电路
    • US5541486A
    • 1996-07-30
    • US326892
    • 1994-10-21
    • Allan C. ZollerTina VrabecRichard A. Dolezal
    • Allan C. ZollerTina VrabecRichard A. Dolezal
    • F15B9/09G05B19/35G05D3/00G05D3/12G05B5/01
    • G05B19/35G05B2219/33268G05B2219/33273G05B2219/37008G05B2219/41099G05B2219/41301G05B2219/42317G05B2219/42319G05B2219/42323
    • A position control circuit having a demodulator with automatic tuning capability for use in an electro-hydraulic positioning system used to position a servo device. The position control circuit includes the demodulator, an analog to digital converter with an input voltage range, and a microcontroller. The demodulator has a gain and is operable to convert a feedback signal from the servo device to a position signal having a lower voltage value when the servo device is at its 0% position and an upper voltage value when the servo device is at its 100% position; the lower voltage value and upper voltage values being a function of the demodulator gain. Upon operator initiation, the microcontroller automatically calculates the largest value for the demodulator gain that results in the position signal from the demodulator having a lower voltage value within a lower voltage range and an upper voltage value within an upper voltage range, where the lower voltage range and the upper voltage range are within the input voltage range of the analog to digital converter.
    • 一种位置控制电路,具有具有自动调谐能力的解调器,用于在用于定位伺服装置的电动液压定位系统中。 位置控制电路包括解调器,具有输入电压范围的模数转换器和微控制器。 解调器具有增益,并且可操作以在伺服装置处于其0%位置时将来自伺服装置的反馈信号转换为具有较低电压值的位置信号,并且当伺服装置处于其100% 位置; 较低的电压值和上限电压值是解调器增益的函数。 在操作员启动时,微控制器自动计算解调器增益的最大值,其导致来自解调器的位置信号具有较低电压范围内的较低电压值和较高电压范围内的较高电压值,其中较低电压范围 并且上限电压范围在模数转换器的输入电压范围内。
    • 2. 发明授权
    • Actuator positioning apparatus
    • 执行器定位装置
    • US5132602A
    • 1992-07-21
    • US594859
    • 1990-10-02
    • Gary C. JorgensenMichael D. Harper
    • Gary C. JorgensenMichael D. Harper
    • G05D3/12G05B19/23
    • G05B19/238G05B2219/37168G05B2219/37169G05B2219/37171G05B2219/41099G05B2219/50042
    • A method and apparatus for accurately and reliably positioning an actuator arm (12) is disclosed. The actuator arm (12) is driven by a conventional DC motor (38). The conductors which supply current to the motor (38) serve as primary windings (60) of a current transformer (58). The signal induced on secondary windings (62) of the transformer (58) responds to fluctuations in average current flowing in the motor (38). These fluctuations are amplified (64) and filtered (66) so that an AC burst (68) is produced in response to each commutation of the motor (38). The AC burst (68) triggers a one-shot timing circuit (72), which generates a pulse that remains active until the AC burst (68) has decayed. The pulse disappears prior to a subsequent commutation of the motor (38). Thus, one pulse is generated for each commutation of motor (38). A counter (76) is clocked by these pulses. The counter (76) increments when the motor (38) moves in one direction and decrements when the motor (38) moves in the opposing direction. Thus, the counter (76) maintains a current count which describes the position of the motor (38). A controller (16) compares this current count with an input signal (14) and controls the operation of the motor (38) based on the results of the comparison. Accordingly, the motor (38) moves until the current count reaches a value corresponding to information presented in the input signal (14).
    • 公开了一种用于准确可靠地定位致动器臂(12)的方法和装置。 致动器臂(12)由传统的直流电动机(38)驱动。 向电动机(38)供应电流的导体用作电流互感器(58)的初级绕组(60)。 在变压器(58)的次级绕组(62)上感应的信号响应于在电动机(38)中流动的平均电流的波动。 这些波动被放大(64)并被滤波(66),使得响应于电动机(38)的每次换向而产生AC脉冲串(68)。 交流脉冲串(68)触发单稳定时电路(72),其产生在AC脉冲串(68)衰减之前保持有效的脉冲。 脉冲在电动机(38)的随后换向之前消失。 因此,对于电机(38)的每次换向都产生一个脉冲。 计数器(76)由这些脉冲计时。 当马达(38)沿一个方向移动时,计数器(76)递增,并且当马达(38)沿相反方向移动时递减。 因此,计数器(76)保持描述电动机(38)的位置的电流计数。 控制器(16)将该当前计数与输入信号(14)进行比较,并且基于比较结果来控制马达(38)的运行。 因此,马达(38)移动直到当前计数达到对应于在输入信号(14)中呈现的信息的值。
    • 3. 发明授权
    • Method of positioning a part
    • 定位零件的方法
    • US5777446A
    • 1998-07-07
    • US679272
    • 1996-07-12
    • Norbert KnabHolger Pruessel
    • Norbert KnabHolger Pruessel
    • G05D3/12G05B19/42B60J1/12E05F15/16G05B9/02
    • G05B19/42E05Y2400/34E05Y2800/00G05B2219/36464G05B2219/41099G05B2219/43113G05B2219/43179G05B2219/45242
    • A method of positioning a part includes the steps of reciprocatingly moving a part between two end positions by a drive, generating a control signal for the drive upon reaching the end positions, stopping the drive or changing a drive direction of the drive upon receipt of the control signal; detecting a position of the drive after a first reaching of at least one of the end positions by the part, storing the detected position of the drive, and during further approaches of the end positions by the part, stopping the drive or changing the drive direction before reaching the end positions. After a selectable number of approaches of the part to at least one of the end positions the drive is stopped only when the end position is reached and the position of the drive is detected and stored once again.
    • 一种定位零件的方法包括以下步骤:通过驱动器在两个端部位置之间往复运动一个零件,产生用于驱动器达到终端位置的控制信号,在接收到驱动装置时停止驱动或改变驱动装置的驱动方向 控制信号; 在通过所述部件首次到达所述端部位置中的至少一个之后检测所述驱动器的位置,存储所述驱动器的检测位置,以及在通过所述部件进一步接近所述端部位置期间,停止所述驱动或改变所述驱动方向 在达到终点之前。 在部件的至少一个结束位置的可选数量的接近之后,仅当达到结束位置并且再次检测并存储驱动器的位置时,才停止驱动器。
    • 7. 发明授权
    • Calibration method for servo
    • 伺服校准方法
    • US08054029B2
    • 2011-11-08
    • US12360121
    • 2009-01-27
    • Yung-Shen LeeShih-Che Hung
    • Yung-Shen LeeShih-Che Hung
    • G05B1/06
    • G05B19/19G05B2219/41099
    • A calibration method for servo is provided, wherein a motor of the servo is activated at a low-speed mode to drive a moved member of the servo moving to a first limit position and a second limit positions. During the movement of the moved member, a motor control power of the motor is monitored continuously to determine whether the motor control power exceeds a threshold value. When the moved member reaches the first or the second limit position, the motor control power is raised to exceed the threshold value and a motor coordinate value corresponding to the first or second limit position is determined simultaneously. Finally, a conservation relation for determining the actual coordinate by the motor value can be derived according to the values of actual coordinate of the first and second limit positions, and the values of the corresponding motor coordinate.
    • 提供了一种用于伺服的校准方法,其中伺服的电动机以低速模式被激活,以驱动伺服移动的移动部件移动到第一极限位置和第二极限位置。 在移动构件的移动期间,连续地监测电动机的电动机控制功率,以确定电动机控制功率是否超过阈值。 当移动部件达到第一或第二极限位置时,马达控制功率升高到超过阈值,同时确定与第一或第二极限位置对应的马达坐标值。 最后,可以根据第一和第二极限位置的实际坐标值和相应的电动机坐标的值,得出用于通过电动机值确定实际坐标的守恒关系。
    • 10. 发明申请
    • LINEAR ACTUATOR AND METHOD FOR CONTROLLING THE SAME
    • 线性致动器及其控制方法
    • US20160380566A1
    • 2016-12-29
    • US15189324
    • 2016-06-22
    • LG Innotek Co., Ltd.
    • Jin Seob Lee
    • H02P8/36H02K7/06
    • H02P8/36G05B19/404G05B2219/37094G05B2219/37124G05B2219/37277G05B2219/41099G05B2219/41206G05B2219/50043H02K7/06
    • The present invention provides a linear actuator including a motor; a linear driving unit coupled to the motor and including a magnet; a sensor unit configured to sense a change amount of magnetic flux depending on a position of the magnet and convert the sensed change amount of magnetic flux into measured voltage data; a data unit in which reference voltage data corresponding to the change amount of magnetic flux depending on a position of the magnet is stored; and a judging unit configured to compare the reference voltage data with the measured voltage data at the corresponding position of the magnet. The present invention is advantageous in that, by compensation-controlling a position of the motor, feedback control may be performed in the step motor to secure performance of the product to which the present invention is applied
    • 本发明提供了一种包括马达的线性致动器; 耦合到电动机并包括磁体的线性驱动单元; 传感器单元,被配置为根据磁体的位置感测磁通量的变化量,并将所感测的磁通变化量转换成测量电压数据; 数据单元,其中存储与磁体的位置相对应的磁通量的变化量的参考电压数据; 以及判断单元,被配置为将所述参考电压数据与所述磁体的相应位置处的所测量的电压数据进行比较。 本发明的优点在于,通过补偿控制电动机的位置,可以在步进电动机中执行反馈控制以确保应用本发明的产品的性能