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公开(公告)号：US4450397A
公开(公告)日：1984-05-22
申请号：US429803
申请日：1982-09-30
IPC分类号： H02P3/24
CPC分类号： H02P3/24
摘要： A braking control circuit for an alternating current motor is disclosed as having a winding and adapted to be coupled to an energizing control circuit for connecting a source of AC voltage to and for disconnecting the source of AC voltage from the winding. The braking control circuit comprises a selectively controlled rectifier operative in a first conductive mode for applying rectified current to the winding to brake the motor and in a second non-conductive mode, and a switching circuit coupled to the rectifier and responsive to the disconnecting of the source of AC voltage from the winding for switching the rectifier between its first and second modes at a first switching rate to brake the motor rotation at a corresponding first braking rate, and thereafter for switching the rectifier between its first and second modes at a second switching rate different from the first switching rate to brake the motor at a corresponding second braking rate.
摘要翻译： 公开了一种用于交流电动机的制动控制电路，其具有绕组并且适于耦合到用于将AC电压源与绕组断开的AC电压源连接的通电控制电路。 制动控制电路包括以第一导电模式操作的选择性控制的整流器，用于将整流电流施加到绕组以制动电动机并处于第二非导通模式，以及耦合到整流器的开关电路，并且响应于断开 来自绕组的交流电压源，用于以第一开关速率在其第一和第二模式之间切换整流器，以相应的第一制动速率制动电动机转动，然后在第二和第二模式之间切换整流器 速率与第一切换速率不同，以相应的第二制动速率制动马达。
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公开(公告)号：US5092058A
公开(公告)日：1992-03-03
申请号：US547313
申请日：1990-07-05
IPC分类号： G01B7/02
CPC分类号： G01B7/02 , Y10S33/01 , Y10T83/858
摘要： Disclosed is a measurement system magnetic coupler. The system comprises reader head apparatus for establishing a measurement related to the location of a physical structure moveable along a predetermined path. The system also includes a magnet for coupling the reader head apparatus to the physical structure by magnetic attraction between the magnet, the reader head apparatus, and the physical structure.
摘要翻译： 公开了一种测量系统磁耦合器。 该系统包括用于建立与沿着预定路径可移动的物理结构的位置相关的测量的读取头装置。 该系统还包括用于通过磁体，读取器头装置和物理结构之间的磁吸引将读取器头装置耦合到物理结构的磁体。
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公开(公告)号：US4974332A
公开(公告)日：1990-12-04
申请号：US233496
申请日：1988-08-19
IPC分类号： G01D18/00
CPC分类号： G01D18/00
摘要： Disclosed is a measurement system having reader element standoff. The system comprises a calibrated reference member for use with a reader head in making a measurement. The system also includes a reader head comprising a reader element configured to move laterally with respect to the calibrated reference member for making the measurement relative to a reference position on the calibrated reference member. Also, standoff structure is provided for establishing a variable standoff distance between the reader element and the calibrated reference member while substantially invariably maintaining a fixed lateral position of the reader element within the reader head.
摘要翻译： 公开了一种具有阅读器元件间隔的测量系统。 该系统包括用于在进行测量时与读取头一起使用的校准参考构件。 该系统还包括读取器头，其包括被配置为相对于校准的参考构件横向移动的读取器元件，用于相对于校准的参考构件上的基准位置进行测量。 此外，提供了间隔结构用于在读取器元件和校准的参考构件之间建立可变的间隔距离，同时基本上始终保持读取器元件在读取器头内的固定横向位置。
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公开(公告)号：US4961269A
公开(公告)日：1990-10-09
申请号：US233499
申请日：1988-08-19
CPC分类号： B27B27/02 , B23D59/001 , G01B7/003 , Y10T83/857
摘要： Disclosed is a measurement system for providing a direct reading of a position on either side of a reference position. The system comprises a reader head including a reader element configured to move laterally with respect to a calibrated reference member for making a measurement relative to a reference position. The measurement system also includes mode display apparatus for increasing or decreasing the measurement which is displayed as the reader element moves away from or toward a selected side of the reference position.
摘要翻译： 公开了一种用于提供对参考位置的任一侧上的位置的直接读取的测量系统。 该系统包括读取器头，其包括被配置为相对于校准的参考构件横向移动的读取器元件，用于相对于参考位置进行测量。 测量系统还包括用于增加或减少当读取器元件远离或朝向参考位置的选定侧移动时显示的测量的模式显示装置。
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公开(公告)号：US4982509A
公开(公告)日：1991-01-08
申请号：US233498
申请日：1988-08-19
CPC分类号： B23D59/001 , B27B27/02 , G01B7/02
摘要： Disclosed is a measurement system having multiple display orientations. The measurement system comprises a reader head having a reader element, and a display module. The reader element is configured for lateral movement with respect to a calibrated reference member for making a measurement relative to a reference position on the calibrated reference member. The display module is for displaying a measurement and includes coupling hardware for connecting the display module to the reader head so that the display module can be read horizontally independent of whether the reader head is oriented horizontally, vertically, or in some other direction.
摘要翻译： 公开了具有多个显示方向的测量系统。 测量系统包括具有读取器元件的读取头和显示模块。 读取器元件被配置为相对于校准的参考构件横向移动，用于相对于校准的参考构件上的参考位置进行测量。 显示模块用于显示测量，并且包括用于将显示模块连接到读取头的耦合硬件，使得可以水平地读取显示模块，而不管读取头是水平，垂直还是在某个其他方向。
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公开(公告)号：US4873770A
公开(公告)日：1989-10-17
申请号：US233493
申请日：1988-08-19
CPC分类号： G01D5/2415 , G01B7/02 , Y10S33/01
摘要： Disclosed is a capacitive measurement system. The system comprises structure for generating a plurality of waveforms, a calibrated reference member for use with a reader head in making a measurement, and a reader element configured for lateral movement with respect to the calibrated reference member. The calibrated reference member comprises one element of a capacitor. The reader element comprises a plurality of reader regions comprising the other element of the capacitor. The reader element also includes structure for receiving two signals resulting from coupling of the two capacitor elements. The system functions to detect a phase shift level between the two signals and to determine magnitude of lateral movement in a particular direction from the magnitude of the phase shift.
摘要翻译： 公开了一种电容测量系统。 该系统包括用于产生多个波形的结构，用于在进行测量时与读取头一起使用的校准参考构件以及被配置为相对于经校准的参考构件横向移动的读取器元件。 校准的参考构件包括电容器的一个元件。 读取器元件包括多个包括电容器的另一元件的读取器区域。 读取器元件还包括用于接收由两个电容器元件的耦合产生的两个信号的结构。 该系统用于检测两个信号之间的相移电平并且确定在相移幅度的特定方向上的横向运动的幅度。
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