公开(公告)号：US06292002B1

公开(公告)日：2001-09-18

申请号：US09375211

申请日：1999-08-16

Applicant: Ralph Pringle, Jr. ,  Felix E. Morgan

Inventor： Ralph Pringle, Jr. ,  Felix E. Morgan

IPC: G01R2922

CPC classification number: G01R31/2824 ,  G01R29/22

Abstract: A method and apparatus for measuring the frequency of a desired resonant mode of a crystal arrangement, or other two-port device, during an automated operation. The crystal arrangement, or other two-port device, is placed into a test circuit and subjected to a sinusoidal test signal of known frequency. Based upon the output response of the crystal arrangement to the test signal, the frequency of the test signal is changed such that the test signal rapidly converges on a desired mode of operation of the crystal arrangement. This is accomplished by first noting a desired increase in amplitude of the output response of the crystal arrangement, followed by measuring an error signal related to the desired crystal arrangement mode of operation. When the error equals a predetermined value the frequency of the sinusoidal test signal is the frequency of the desired mode.

Abstract translation: 一种用于在自动操作期间测量晶体装置或其它双端口装置的期望谐振模式的频率的方法和装置。 晶体布置或其他双端口器件被放置在测试电路中并经受已知频率的正弦测试信号。 基于晶体布置对测试信号的输出响应，测试信号的频率被改变，使得测试信号在晶体布置的期望操作模式上快速收敛。 这是通过首先注意到晶体布置的输出响应的幅度的期望增加，然后测量与期望的晶体布置操作模式相关的误差信号来实现的。 当误差等于预定值时，正弦测试信号的频率是所需模式的频率。

公开(公告)号：US06818876B1

公开(公告)日：2004-11-16

申请号：US09333783

申请日：1999-06-15

Applicant: Ralph Pringle, Jr.

Inventor： Ralph Pringle, Jr.

IPC: G01J120

CPC classification number: G02B26/0833 ,  G02B26/06

Abstract: A method and apparatus for producing a scintillation-immune adaptive optics reconstructor is disclosed. The present invention includes a wavefront sensor (70) which determines illumination slope and amplitude of a number of subapertures (75). The slope and amplitude information is coupled to a slope weighting function (90), which weights the slopes of each subaperture (75) according to the amplitude of illumination of each subaperture. The present invention determines the variation in light amplitude received by the subapertures (75) and determines a slope of the light amplitude variation. The signal gain of the imaging system is then adjusted depending on the slope of the light amplitude variation, thereby yielding a closed-loop system that compensates for amplitude disturbances caused by scintillations in the images received by the imaging system (10).

Abstract translation: 公开了一种用于制造闪烁免疫自适应光学重构器的方法和装置。 本发明包括确定多个子孔径（75）的照明斜率和幅度的波前传感器（70）。 斜率和振幅信息被耦合到斜率加权函数（90），其根据每个子孔径的照明幅度对每个子孔径（75）的斜率进行加权。 本发明确定由子孔径（75）接收的光振幅的变化并确定光振幅变化的斜率。 然后根据光振幅变化的斜率来调整成像系统的信号增益，从而产生补偿由成像系统（10）接收的图像中的闪烁引起的振幅干扰的闭环系统。

公开(公告)号：US06348795B2

公开(公告)日：2002-02-19

申请号：US09904403

申请日：2001-07-12

Applicant: Ralph Pringle, Jr. ,  Felix E. Morgan

Inventor： Ralph Pringle, Jr. ,  Felix E. Morgan

IPC: G01V300

CPC classification number: G01R31/2824 ,  G01R29/22

Abstract: A method for determining a resonant frequency of a mechanical device having a first mass and at least one second mass mechanically coupled to the first mass comprises the steps of: providing a control signal to a voltage-controlled oscillator (VCO) to control the frequency of an output thereof; translating a phase shifted output of the VCO into an oscillatory force which is applied to one of the first and second masses to cause the mechanical device to respond; measuring the response of the mechanical device and generating a response signal representative thereof in frequency and amplitude; generating an error signal proportional to the phase difference between a signal representative of the output of the VCO and the measured response signal; adjusting the control signal to cause the oscillatory force applied to the one mass to sweep within a calculated frequency range rendering the amplitude of the response signal to approach and exceed a calculated threshold value; and when the calculated threshold is exceeded by the amplitude of the response signal, finely adjusting the control signal to the VCO until the value of the measured error signal is equal substantially to a calculated final error value, whereupon the frequency of the response signal is the resonant frequency of the mechanical device.

Abstract translation: 一种用于确定具有第一质量的机械装置和机械耦合到第一质量的至少一个第二质量的机械装置的谐振频率的方法包括以下步骤：向压控振荡器（VCO）提供控制信号以控制 其输出; 将VCO的相移输出转换成施加到第一和第二质量中的一个的振荡力，以使机械装置响应; 测量机械装置的响应并产生其频率和幅度的响应信号; 产生与表示VCO的输出的信号与所测量的响应信号之间的相位差成比例的误差信号; 调整所述控制信号以使施加到所述一个质量块的振荡力在计算的频率范围内扫描，使得所述响应信号的幅度接近并超过所计算的阈值; 并且当所计算的阈值超过响应信号的幅度时，将控制信号精细地调整到VCO直到所测量的误差信号的值基本上等于所计算的最终误差值，于是响应信号的频率为 谐振频率的机械装置。