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Patent Agency Ranking
公开(公告)号：US3737637A
公开(公告)日：1973-06-05
申请号：US3737637D
申请日：1971-12-13
Applicant: IBM
Inventor： FRANKENY R , TUTTLE J
CPC classification number: G01R31/30
Abstract: Variable delay circuits generate output signals representing test signals having controlled timing widths. The output signals are generated by the variable delay circuits in accordance with data received from a memory under the control of a program of instructions stored in the memory. A fixed cycle clock initiates accessing of instructions one at a time. Each instruction in turn identifies control data which is supplied at times specified by a variable cycle clock. The delay circuits are assigned delay amounts and selected at times calculated to modify signals at their input desired amounts. The delay circuits are selected individually and in combination to give a wide variety of delay amounts. If desired, external input signals may be passed through the data generator with or without modification or may be stored in the memory for subsequent use in generating output signals. Signals resulting from these various operations may be freely interspersed. The output signals may be supplied directly to test a connected system or to an intermediate storage device such as magnetic tape which may subsequently be used to test the connected system.
Abstract translation: 可变延迟电路产生表示具有受控定时宽度的测试信号的输出信号。 输出信号由存储在存储器中的指令程序的控制下的根据从存储器接收的数据由可变延迟电路产生。 固定周期时钟一次启动指令的访问。 每个指令依次识别由可变周期时钟指定的时间提供的控制数据。 延迟电路被分配延迟量，并且被选择的时间被计算为在输入期望量下修改信号。 延迟电路单独地并且组合地选择以产生各种各样的延迟量。 如果需要，外部输入信号可以在有或没有修改的情况下通过数据发生器，或者可以存储在存储器中用于随后用于产生输出信号。 由这些各种操作产生的信号可以自由散布。 可以直接提供输出信号以测试连接的系统或诸如磁带的中间存储设备，随后可以用于测试连接的系统。
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公开(公告)号：US3794831A
公开(公告)日：1974-02-26
申请号：US3794831D
申请日：1972-06-01
Applicant: IBM
Inventor： FRANKENY R , JOHNSON S
IPC: G01R31/319 , G06F11/32 , G11B13/00
CPC classification number: G01R31/31912 , G06F11/322
Abstract: Signals from a tested electronic unit are continuously stored in sequence on a rotating disc memory while the unit is monitored for errors. When an error occurs, substantially all the recorded signal sequences are displayed as an image on a CRO screen. A manual control selects portions of the stored sequences for display, scanning the image in accordance with manual speed and direction instructions. The manual instructions control stepping of a first counter which is compared for equality with a second counter tracking currently accessible disc locations. Equal comparison triggers the CRO horizontal scan to cause display of a desired and manually variable portion of the recorded signal sequences. Circuits provide pulse stretching and peak detection necessary to efficiently utilize the tester with a variety of tested units and displays.
Abstract translation: 来自经过测试的电子单元的信号连续存储在旋转盘存储器上，同时监视单元的错误。 当发生错误时，基本上所有记录的信号序列都显示为CRO屏幕上的图像。 手动控制选择存储的序列的部分进行显示，根据手动速度和方向指令扫描图像。 手动指令控制第一计数器的步进，其与第二计数器相等以进行比较以跟踪当前可访问的盘位置。 相等的比较触发CRO水平扫描，以显示所记录的信号序列的期望和手动可变部分。 电路提供脉冲拉伸和峰值检测，以有效利用测试仪与各种测试单元和显示器。
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公开(公告)号：BR8004406A
公开(公告)日：1981-01-27
申请号：BR8004406
申请日：1980-07-15
Applicant: IBM
Inventor： FRANKENY R , CLANCY D , OLSON G
Abstract: A damping control system for a three phase stepper motor. A reluctance velocity transducer is used for each of the three phases. The output of each of the transducers is proportional to the rotational velocity of the motor. Each of the transducers is rotationally phase shifted 3.75 with respect to one another and phased to the motor rotor rotationally such that the zero voltage crossings of the transducers correspond to the zero torque crossings of the motor. During damping or detenting of the motor the selected phase has current applied to it which is equal to a predetermined fixed value plus the feedback from its associated transducer. The windings on each side of the detent position have current applied to them which is proportional to the voltage from their respective feedback transducers. The voltage in each of the windings is amplified by a selected gain constant. The current in each of the windings is such that maximum torque is applied to drive the motor to the detent position with appropriate current reversals in the windings to damp out any kinetic energy in the rotor during detenting.
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公开(公告)号：ZA803989B
公开(公告)日：1981-06-24
申请号：ZA803989
申请日：1980-07-02
Applicant: IBM
Inventor： CLANCY D , OLSON G , FRANKENY R
Abstract: A damping control system for a three phase stepper motor. A reluctance velocity transducer is used for each of the three phases. The output of each of the transducers is proportional to the rotational velocity of the motor. Each of the transducers is rotationally phase shifted 3.75 with respect to one another and phased to the motor rotor rotationally such that the zero voltage crossings of the transducers correspond to the zero torque crossings of the motor. During damping or detenting of the motor the selected phase has current applied to it which is equal to a predetermined fixed value plus the feedback from its associated transducer. The windings on each side of the detent position have current applied to them which is proportional to the voltage from their respective feedback transducers. The voltage in each of the windings is amplified by a selected gain constant. The current in each of the windings is such that maximum torque is applied to drive the motor to the detent position with appropriate current reversals in the windings to damp out any kinetic energy in the rotor during detenting.
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