Non - magnetic metallic coatings on metallic and non - metallic basis materials - measurement of coating thickness - phase - sensitive eddy - current method 金属和非金属基材的非磁性金属覆层.覆层厚度测量.相敏涡流法
Non - magnetic metallic coatings on metallic and non - metallic basis materials - measurement of coating thickness - phase - sensitive eddy - current method 金属和非金属基材的非磁性金属覆层.覆层厚度测量.相敏涡流法
Non - magnetic metallic coatings on metallic and non - metallic basis materials - measurement of coating thickness - phase - sensitive eddy - current method iso 21968 : 2005 ; german version en iso 21968 : 2005 金属和非金属基材的非磁性金属涂层.涂层厚度测量.相
The paper introduced a kind of high performance protection strategy about electric motor starting - phase - sensitive protection and the realized process according to spce061a chip 文章介绍了一种高性能的电动机启动保护策略相敏保护,及其基于凌阳spce061a单片机芯片的实现过程。
This paper developed a micro angular rate gyro based on micro piezoelectric ceramic rod structure instead of the sensitive double - deck structure as well as piezoelectric ceramic strain foils , and designed a phase - sensitive detection circuit 摘要研制了基于微型压电陶瓷棒结构代替双敏感梁结构及压电陶瓷片的微型角速率陀螺,并设计了相敏检波电路。
On the basis of these mentioned above , it has been proposed that the principle of phase - sensitive protection and negative sequence protection can be used in the system , which can not only improve the sensitivity of the protective system but also extend the protection range in underground distribution networks 在此基础上提出了将相敏保护原理和负序保护原理应用于测控系统中,它不仅可以提高保护的灵敏度而且还可以扩大保护范围。
The purpose of this paper is to resolve some key technologies of the amplitude - modulation inductive displacement transducer signal processing circuit with nanometer resolution , such as the design of high stability signal generating circuit ; the technology of high precision digital phase - sensitive detection circuit ; the technology of digital filter and linearization , etc 本文主要研究调幅式电感位移传感器精密测量系统中涉及的高精度载波信号发生技术、高精度数字相敏检波技术、数字滤波及线性拟和等关键技术,目的是进一步改善调幅式电感位移传感器精密测量系统的测量精度,适应纳米级测量的要求。
By taking the miniature ceramic rod which is easily to machine high accuracy as sensitive structure , and by printing and polarizing six belt - shaped electrodes above it to constitute three pairs of electrodes , this paper designed package and the phase - sensitive detection circuit in the system so that it effectively reduced the sensitive structure size and improved its processing precision to realize the angular rate gyro microminiaturization 首先采用易于加工成高精度的微型陶瓷棒作为敏感体,在其上印刷成六个带状电极并予以极化构成三副电极对,然后设计了封装及相敏检波电路,从而有效地减小了敏感结构的尺寸,提高了其加工精度,实现了角速率陀螺微型化。
The article relates that the tool ' s measurement precision has been improved by applying cycling acquisition method , self calibration function and phase - sensitive detector . the image coverage rate is improved and reached to 60 percent by increasing the number of pad ' s buttons . the tool carried out two logging functions : fast - scanner mode and dip mode 本文叙述了采用循环采集法、自刻度功能、相敏检波等方法提高了仪器的测量精度;通过增加极板电扣的数量将图像覆盖率提高到60 ;实现了快扫描、倾角两种测井模式;将测斜短节与预处理短节合二为一,缩短了仪器长度;去除了零伺服控制系统,简化了电路;用fpga芯片对采集控制器重新设计。