但是,该方法对条纹信号的质量没有苛刻的要求,适用面广。
But this method can be widely applied because it has no rigorous restriction to the quality of fringe signal.
光电轴角编码器中的莫尔条纹信号质量决定了整个系统的细分精度。
The signal quality of Moire fringe in photoelectric shaft encoder determines the subdivision accuracy of the whole system.
本文介绍了两种莫尔条纹信号的细分方法。这些方法完成细分值计算的速度快并且占用内存少。
This paper introduces two subdivision methods for moire fringe signals. The methods require less internal memories and they can compote the interpolated position values of the signals much faster.
在国内外普遍使用的细栅距幅光栅叠栅条纹系统中,衍射效应是很明显的,这是造成叠栅条纹信号的衬比(度)和正弦性不好的主要原因。
In an amplitude grating system of small grid pitch, the diffractive light is the main cause to deteriorate the contrast and sinusoidal property of Moiré signals.
将自适应信号处理理论引入到莫尔条纹光电转换信号处理之中。
The theory of adaptive signal process is introduced to process the optoelectronic converting signals of moire fringes.
实验表明,采用该方法对光纤准白光干涉信号零光程差位置的定位精度优于0.5个干涉条纹。
The experiments show that the positioning accuracy of extrapolation method for zero optical path difference point of fiber quasi-white interference signal is less than 0.5 interference fringes.
系统发射的探测光束发散角较大时,信噪比较差,且光束扫过点目标可能出现条纹状信号过程。
For large probe beam divergence the SNR is relatively poor, and even a streaky signal process is predicted if a point target is scanned across.
采用正切细分法,对不足一个信号周期的条纹位移,实现了正确的辨向和高倍数细分。
Combining with tangent subdividing method, this method can correct the counting error, recognize the direction and subdivide the fraction of fringes displacement.
本文着重讨论了双光束条纹型激光多普勒测流系统中,光学分束系统参数与散射信号的关系,列出了有关的公式。
The effects of parameters of optical beam splitter on-Doppler signals in a dual beam LDV were discussed, and the formulae about these effects were given.
分析了信号丢失的原因,给出了丢失条纹数的确定方法。
In this paper the reason of signal loss is analysed and the method of calculationg the lost fringe number is described.
在实施莫尔条纹细分中,两路信号的相位误差将影响计量光栅的测量位移时的精度。
In morie strip division, the phase error between two signals will affect the measurement precision.
分析了干涉条纹两路光电差分信号的有效范围,提出采用椭圆拟合对差分信号进行拟合、校正与补偿,以进一步提高系统测量精度的方法。
Effective range of detection signal is analyzed and proposes a means of ellipse fit that revises and compensates measurement result to improve measurement precision.
分析了信号丢失的原因,给出了丢失条纹数的确定方法。
Rough set method for invalid and absent signal treatment in power station fault diagnosis system;
针对条纹计数法和相位分析法处理自混合干涉信号的不足,提出了一种基于时频分析的自混合干涉信号处理方法。
To overcome the limitation of fringe counting and phase analysis, a new method based on the time-frequency analysis is proposed to process the self-mixing interference signal.
其中闪烁体将中子信号转换为可见光信号,光学系统则将闪烁体的发光信号成像在条纹相机上进行记录。
The thin piece of scintillator material acts as a neutron-to-light converter. The optical system images light from the scintillator surface to camera for recording.
其中闪烁体将中子信号转换为可见光信号,光学系统则将闪烁体的发光信号成像在条纹相机上进行记录。
The thin piece of scintillator material acts as a neutron-to-light converter. The optical system images light from the scintillator surface to camera for recording.
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