相位计
- 名phase meter;phasometer
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基于FPGA的数字相位计在相位测距系统中的研究
Research on Digital Phasometer Based on FPGA in Position-tracking System
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本文叙述了应用比相法检测圆光栅的原理和方法,并对相位计的静态特性和动态特性进行了分析。
The general principle and procedure of testing circular gratings by using the phase-comparison method are discussed , and the static and dynamic characteristics of the phasometer are analyzed .
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基于FFT的激光测距数字相位计的实现
Realization of Digital Phase Detector Based on FFT Algorithm in Laser Distance Measurement System
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本文结合工程需要详细论述了一种数字相位计的实现方法,该方法是基于FPGA(现场可编程门阵列)芯片运用FFT(快速傅立叶变换)算法完成的。
According to the special requirements in the practical project , a way of digital phase detector is studied in this thesis , which is based on FPGA and FFT algorithm .
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新的MSK调制器模型引入一个特殊相位计模块,控制已调信号的相位连续性;
A specific phase meter module is used to control the phase continuation of modulated signals in the new MSK modulator .
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高精度工频相位计的研制
Design of the High Accuracy Power Signal Phase Meter
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宽频带中频相位计的研制
Development of the Wide Band Intermediate Frequency Phase Meter
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论述了相位计的工作原理,给出了系统框图。
The principle of the phase meter and it 's block dia-gram are presented .
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测量精度达2.6°的光外差干涉仪用动态相位计
Phasemeter of Online Heterodyne Interferometer Instrument for Measuring Surface Roughness with Accuracy of 2.6 °
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对各个部件的设计做了介绍,并给出了相位计所达到的技术指标。
The designs of every component and the performance figures of the phase meter are illustrated .
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比较全面地介绍了-宽带中频相位计的研制过程。
Development process of the wide-band intermediate frequency phase meter is introduced completely in this paper .
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该相位计通过测量两路信号过零点的时间差来计算相位差。
The phasemeter detects the phase difference by calculating the time between the zero-crossing of the two signals .
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为了校准低频相位计,采用数字法设计了一种正弦波差值相位发生器。
A sinewave differential-phase generator using the digital technique has been developed for the calibration of phasemeter at low-frequencies .
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结合用于磨床加工的光外差表面粗糙度在线干涉测量仪,文中介绍了高精度动态相位计的设计与实现。
To develop a practical , economical and precision heterodyne interferometer instrument for measuring surface roughness online , phasemeter with high dynamic accuracy is the key technique .
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介绍了该数字相位计的硬件部分和软件部分的设计,并详述了软件部分各个模块的功能,这些模块包括主控模块、数据采集模块、界面表现模块、功能实现模块、辅助功能模块。
It also introduced the design of hardware and software and the function of all modules . The modules included main control , data acquisition , interface , function-realizing , and assistant function .
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本文提出一种对消微波双通道相移测量中失配误差的方法,可用于精密相位计的比对和高精度相移器的研制。
A method for the cancellation of mismatch error in the microwave dual-channel phase shift measurement is presented , which may have application to the intercomparison of precise phasemeters and to the development of high-precise phase shifters .
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本文根据相关函数的特性,通过自相关和互相关原理导出适合于虚拟仪器测量的数学表达式,由此设计出虚拟相位计,体现虚拟仪器中软件即仪器的观点。
This papers bases on properties of related function , devises out the suitable expresses for virtual instruments according to principle of AutoCorrelation and CrossCorrelation , then devises out virtual phase meter and embody that the software is the instrument .
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基于FPGA平均值原理相位差计的设计
Design of Average Principle Phase Difference Tester Based on FPGA
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用AlterCPLD实现的虚拟相位差计设计
Design of Virtual Phase Difference Meter with Alter CPLD
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可逆计数器及其在数字式相位差计中的应用
The applications of up - down counter in digital phase comparator
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高精度相位频率计在电力系统中的应用
Application of High Accuracy Phase and Frequency Counter in Electric Power System
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基于矢量内积法的高精度数字相位差计
High precision digital phase detector based on inner product theory
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基于相关原理的虚拟相位差计的设计
Design of virtual phase meter based on correlation principle
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本文提出一种基于自适应相位差计的方位序列估计技术。
A bearing sequence estimation technique based on adaptive phase-difference estimator is presented in this paper .
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辅助压力和温度测量让多频相位荧光计是发光探测传感器设计、试和校准的理想选择。
Auxiliary pressure and temperature measurements make the MultiFrequency Phase Fluorometer an ideal choice for luminescence sensor design , testing and calibration .
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对特低和特高含水率测量性能良好的同轴电磁波相位含水率计;
Coaxial electromagnetic wave phase water cut meter which has excellent performance for very high or very low water cut measurement ;
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介绍了三维激光多普勒测速计和自适性相位多普勒速度计系统(三维LDV/APV系统)的性能,分析了气水雾化加湿喷嘴的结构和工作原理。
The performances of 3D Laser Doppler Velocimetry ( LDV ) and Adaptive Phase Doppler ( Velocimetry )( APV ) were introduced , and the structure and work principle of air-water humidifying nozzle were analyzed .
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同轴线相位法含水率计信号处理及传输电路
Signal processing and transmission circuits of coaxial line phase water cut meter
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研究了同轴线相位法含水率计的测量原理,设计了含水率计测量电路的总体方案;
Measurement theory of coaxial line phase water cut meter is discussed and total design scheme of its circuits is ascertained in this paper .
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将新器件、新方法和新技术应用于相位测量技术中,相位计的性能和精确度得以显著提高。
The application of advanced devices , new methods and latest technology to phase measurement results in dramatic improvement of function and precision of phase meter .