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公开(公告)号：US4760743A
公开(公告)日：1988-08-02
申请号：US040683
申请日：1987-04-14
CPC分类号： G01F1/002 , G01F1/66 , G01F1/7082 , G01F1/712
摘要： A system and method are disclosed for acoustic scintillation liquid flow measurement. Measurement is carried out by acoustic beams transmitted perpendicular to the direction the component of liquid flow to be measured, with both phase and amplitude measurements being made to enable generation of accurate speed of flow indications which are indicative of liquid flow through a broad area being monitored as opposed to a single point therein. In one realization of this invention, a pair of projectors are mounted on one side of the flow area, such as a channel to be monitored, and a pair of receivers are mounted on the other side of the flow area with pulsed acoustic signals from each of the projectors being transmitted in separate parallel paths through the liquid, such as water, to the receivers. At the receivers, electrical signals indicative of received acoustic signals in each path are complex demodulated after which the demodulated outputs are shaped, converted and then coupled to a microcomputer for evaluation and, responsive thereto, providing the indication of liquid flow speed.
摘要翻译： 公开了用于声闪烁液体流量测量的系统和方法。 测量是通过垂直于待测量的液体流量分量的方向透射的声束进行的，其中进行相位和振幅测量以使得能够产生准确的流动指示速度，其指示通过被监视的广泛区域的液体流动 而不是单点。 在本发明的一个实现中，一对投影仪安装在流动区域的一侧，例如待监视的通道，并且一对接收器安装在流动区域的另一侧，并且每个接收器具有来自每个 的投影仪通过液体（如水）以单独的平行路径传输到接收器。 在接收机处，指示每个路径中的接收到的声信号的电信号是被解调的，之后解调的输出被成形，转换，然后耦合到微型计算机进行评估，并且响应于此提供液体流速的指示。
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公开(公告)号：US4933916A
公开(公告)日：1990-06-12
申请号：US794086
申请日：1985-11-01
申请人： George A. May , David M. Farmer
发明人： George A. May , David M. Farmer
摘要： Signal phase delay may be accurately measured by transmitting a pseudo-random noise coded reference signal, deriving in-phase and quadrature components of the received coded signal and then separately decoding the in-phase and quadrature components. This technique effectively compresses the transmitted signal pulse to a very narrow width (thereby simplifying discrimination of separate pulses with similar arrival times) while magnifying the pulse amplitude (thereby enhancing the signal to noise ratio).
摘要翻译： 可以通过发送伪随机噪声编码参考信号，导出接收的编码信号的同相和正交分量，然后单独解码同相和正交分量来精确地测量信号相位延迟。 这种技术有效地将发送的信号脉冲压缩到非常窄的宽度（从而简化了具有类似到达时间的单独脉冲的辨别），同时放大脉冲幅度（从而提高信噪比）。
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公开(公告)号：US07228461B2
公开(公告)日：2007-06-05
申请号：US10717823
申请日：2003-11-20
IPC分类号： G06F11/00
CPC分类号： G05B19/4063 , G05B2219/33286
摘要： Certain exemplary embodiments provide a method comprising automatically enforcing user compliance with a plurality of predetermined steps of a computer-assisted verification test of a safety feature for a machine system; inducing an error condition in the machine system; and collecting data regarding a response of the machine system to the error condition.
摘要翻译： 某些示例性实施例提供了一种方法，包括：自动地执行与机器系统的安全特征的计算机辅助验证测试的多个预定步骤的用户合规; 在机器系统中引起错误状况; 并收集关于机器系统的响应的数据到错误状况。
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4.发明授权Method and apparatus for entering and displaying structure information in a machining system 失效用于在加工系统中输入和显示结构信息的方法和装置
公开(公告)号：US5984503A
公开(公告)日：1999-11-16
申请号：US912073
申请日：1997-08-15
IPC分类号： B23Q15/00 , B23Q17/00 , G05B19/409 , G06F3/00 , G06F3/023 , G06F3/048 , G06F17/50 , G06F19/00
CPC分类号： G05B19/409
摘要： A method and apparatus for displaying and entering information associated with structures in a machining system, wherein each structure is associated with at least one setup in the machining system, and can be, for example, a pallet, fixture, or workface. A user interface receives the structure information from the user and displays at least a portion of the information, along with a structure icon, within a window on a display device. Preferably, the location of the tool in the machining system is also displayed within the window along with a machine configuration image which represents the configuration of the machining system. The structure information preferably includes the offset coordinates for the structure. Upon request from the user, setup icons and setup information for the setups associated with the structure can be displayed.
摘要翻译： 一种用于显示和输入与加工系统中的结构相关联的信息的方法和装置，其中每个结构与加工系统中的至少一个设置相关联，并且可以是例如托盘，夹具或工作面。 用户界面从用户接收结构信息，并在显示设备上的窗口内显示信息的至少一部分以及结构图标。 优选地，加工系统中的工具的位置也与表示加工系统的配置的机器配置图像一起显示在窗口内。 结构信息优选地包括该结构的偏移坐标。 根据用户的请求，可以显示与结构相关联的设置的设置图标和设置信息。
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5.发明授权Dynamic correction of servo following errors in a computer-numerically controlled system and fixed cycle utilizing same 失效在计算机数控系统中的伺服跟随误差的动态校正和使用相同的固定循环
公开(公告)号：US5005135A
公开(公告)日：1991-04-02
申请号：US327324
申请日：1989-03-22
IPC分类号： G05B13/02 , G05B19/18 , G05B19/37 , G05B19/404 , G05B19/4061 , G05B19/4155 , G05B19/416
CPC分类号： G05B19/373 , G05B2219/33119 , G05B2219/33338 , G05B2219/34206 , G05B2219/34419 , G05B2219/35245 , G05B2219/35263 , G05B2219/35279 , G05B2219/35287 , G05B2219/35294 , G05B2219/35373 , G05B2219/35394 , G05B2219/36168 , G05B2219/36395 , G05B2219/37619 , G05B2219/41113 , G05B2219/41192 , G05B2219/41219 , G05B2219/42062 , G05B2219/42152 , G05B2219/43199 , G05B2219/45215 , G05B2219/45216 , G05B2219/49376 , G05B2219/50109 , G05B2219/50113 , G05B2219/50208 , Y10T409/30056
摘要： The invention relates to servo-driven computer-numerically-controlled systems of the type adapted to receive part program instructions defining a desired path of relative movement between a tool and a workpiece, wherein the path may include an interior or exterior curved portion to be effected by coordinated linear movement of machine members along at least two orthogonal linear axes. The invention provides apparati and methods for correcting path radius errors to facilitate rapid and accurate movement along the curve. In a preferred embodiment, such path radius correction is applied to a fixed cycle for machining inside circles preferably incorporating such path radius correction and providing substantially tangential engagement between the tool and a machining locus orbited by the tool to avoid abrupt accelerations or decelerations while the tool is in contact with the workpiece. In addition to avoiding surface blemishes, this facilitates machining a broader range of hole sizes with a given sized tool thereby reducing the need for frequent tool changes. The invention carries out path radius correction by generating position commands received by the servo using corrected radius data, the difference between which and the desired radius to be machined compensates for at least a portion of the path radius error that would otherwise be generated by the servo. Apparatus and methods for threading holes using a non-helical threading tools with or without path radius correction are also disclosed.
摘要翻译： 本发明涉及适于接收部件程序指令的伺服驱动的计算机数字控制系统，该程序指令限定了工具和工件之间的相对运动的期望路径，其中该路径可包括要实现的内部或外部弯曲部分 通过沿着至少两个正交线性轴的机器构件的协调线性运动。 本发明提供了用于校正路径半径误差的装置和方法，以促进沿着曲线的快速和准确的移动。 在优选实施例中，将这种路径半径校正应用于用于在圆内进行加工的固定循环，优选地包括这种路径半径校正并且在工具与由工具轨道运动的加工轨迹之间提供基本上切向的接合以避免突然加速或减速，同时工具 与工件接触。 除了避免表面瑕疵之外，这有助于使用给定尺寸的工具加工更宽范围的孔尺寸，从而减少频繁更换刀具的需要。 本发明通过产生由伺服使用校正的半径数据接收的位置命令来执行路径半径校正，其中加工的所需半径和所需半径之间的差补偿由伺服器产生的路径半径误差的至少一部分 。 还公开了使用具有或不具有路径半径校正的非螺旋穿线工具穿孔的装置和方法。
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6.发明授权Method and apparatus for simulating phase coherent signal reflections in media containing randomly distributed targets 失效用于模拟包含随机分布的目标的介质中的相位相干信号反射的方法和装置
公开(公告)号：US4872146A
公开(公告)日：1989-10-03
申请号：US197386
申请日：1988-05-23
申请人： David M. Farmer , R. Del Huston
发明人： David M. Farmer , R. Del Huston
摘要： A method of simulating phase coherent signal reflections in media containing randomly distributed targets capable of scattering signals transmitted through the media, wherein the energy of signals directly scattered by the targets is significantly greater than the energy of signals multiply scattered by the targets. A reference signal having a wavelength which is small in comparison to the mean spacing between the targets is modulated and then transmitted through the target-containing medium. The targets produce scattered echoes of the signal, from which normalized in-phase and quadrature components are derived and separately, cumulatively summed, "n" times, until their variance becomes a linear function of 1/n.
摘要翻译： 一种模拟包含能够散射通过介质传播的信号的随机分布目标的介质中的相位相干信号反射的方法，其中由目标直接散射的信号的能量显着大于由目标乘以散射的信号的能量。 具有与目标之间的平均间隔相比较小的波长的参考信号被调制，然后通过含目标介质传输。 目标产生信号的散射回波，从其中导出和分离归一化的同相和正交分量“n”次，直到它们的方差变为1 / n的线性函数。
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公开(公告)号：US4800541A
公开(公告)日：1989-01-24
申请号：US13933
申请日：1987-02-12
申请人： David M. Farmer , Jane A. Verrall
发明人： David M. Farmer , Jane A. Verrall
摘要： A method of determining the bearing "S" of a signal transmitter relative to a remote signal receiver. A signal pulse having a high signal to noise ratio is transmitted and sampled at closely spaced receivers displaced from the transmitter by a distance "D". Sampled phase components are derived at each receiver by deriving in-phase and quadrature components of the sampled pulse and by deriving the arctangent of each such component. The arrival time of the sampled pulses is measured by applying a least squares Gaussian fit to the modulus or to the amplitude envelope of the pulse samples. The difference ".delta.t" between the time of arrival of the pulse at each receiver is determined and then the approximate phase difference 2.pi..omega..delta.t between the sampled pulses is determined where ".omega." is the carrier frequency of the transmitted pulse. The phase difference is then applied to resolve the phase ambiguity of the phase components and the bearing "S" is then calculated.The method also facilitates correction of errors in the apparent transmitter bearing which are introduced by relative medium movement, in which the signal pulse is transmitted through a medium which moves with a component of velocity "u" perpendicular to the acoustic path between the transmitter and receivers, thereby causing the bearing to appear to deviate from the actual bearing of the transmitter relative to the receivers; and, by small scale fluctuations in sound speed between the transmitter and each of the receivers.
摘要翻译： 确定信号发射机相对于远程信号接收机的轴承“S”的方法。 具有高信噪比的信号脉冲在距离发射机偏移距离“D”的紧密间隔的接收机处被传送和采样。 通过导出采样脉冲的同相和正交分量并通过导出每个这样的分量的反正切，在每个接收机处导出采样相位分量。 通过对脉冲样本的模量或幅度包络应用最小二乘法高斯拟合来测量采样脉冲的到达时间。 确定在每个接收机处的脉冲到达时间之间的差“delta t”，然后确定采样脉冲之间的近似相位差2πω-Δt，其中“ω”是发射脉冲的载波频率。 然后应用相位差来解析相位分量的相位模糊度，然后计算轴承“S”。 该方法还有助于校正通过相对介质运动引入的视在发射机轴承中的误差，其中信号脉冲通过介质传播，该介质随垂直于发射机和接收机之间的声学路径的速度“u”分量移动 从而导致轴承看起来相对于接收器偏离发射机的实际轴承; 并且通过发射机和每个接收机之间的声速的小规模波动。
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