查询词典 leakage magnetic flux

Keywords: data compression;data identification;wavelet transform;magnetic flux leakage inspection;pipeline

中文关键词：数据压缩；数据识别；小波变换；漏磁检测；管道

According to signals obtained in magnetic flux leakage detection of oil pipe wavelet transform method is adopted for signal processing.

为了解决输油管道运营中管道腐蚀问题，需定期对输油管道进行无损检测，采用小波变换的方法处理漏磁信号，分析探讨了漏磁检测的原理，指出采用小波变换中的Mallat算法可以有效地对漏磁信号进行处理，使信号便于储存和分析。

The potential superiority of the Pulsed Magnetic Flux Leakage technique has been shown in detecting corrosion on metal pipeline.

在金属管道腐蚀检测方面，脉冲漏磁技术显示了潜在的优势。

A two-stage self-adapting filter method is proposed for implementing noise decrease in magnetic flux leakage signals.

介绍一种两级自适应滤波算法对漏磁信号进行降噪的实现。

Our main production "WINNER" BESTKING 'card: the ring, EI-shaped, R-shaped, O-shaped power transformer, PFC transformer, SMD transformer SMD Explorer, ISDN, XDSL, MODEM, such as a variety of communications and audio transformers; a variety of high-frequency switch transformer, filter, choke and other production Materials, small size, high efficiency, magnetic flux leakage of small, low noise, good stability and so on.

我司主要生产&WINNER&BESTKING'牌：环形，EI形，R形，O形电源变压器，PFC变压器，SMD贴片变压器，ISDN，XDSL，MODEM等各种通讯与音频变压器；各种高频开关变压器、滤波器、扼流圈等产品，具有体积小，效率高、漏磁小、噪音低、稳定性好等特点。

But due to significant magnetic flux leakage present in the loosely wound embedded solenoid inductor structure, large inductance cannot be realized in a compact structure. This is followed by the design of a LTCC common-mode filter intended for use with USB 2.0 products. As compared to the wire-wound common-mode choke, the designed multi-layer common-mode filter produces lower insertion loss on differential-mode signal than conventional ferrite-based common-mode filter.

接著讨论利用低温共烧陶瓷制程技术，设计应用於USB 2.0产品的共模滤波器，相较於一般以磁性材料为主的绕线式共模滤波器，使用多层电路技术设计的共模滤波器可提供较低的差模讯号损失，此外，应用偏移线路的新架构而非完全重叠的线路来设计差模讯号线路组，可减少33%的零件厚度。

The micro-crack for sucker rod is inspected by magnetic flux leakage inspection by now, but it is not good for accuracy and sensitivity.

针对目前漏磁检测抽油杆微裂纹的精度和灵敏度不高的现状，提出一种通过拉伸抽油杆使微裂纹张开后的漏磁检测法。

The unit of magnetic flux in the centimeter-gram-second system, equal to the flux ''.

麦克斯韦尔厘米－克－秒制的''。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

We have made detailed studies of the influence of heat flux from the magnetosphere and ion flux along the magnetic field line of force on the morphology of the ionosphere. The validation of our ionospheric model is further verified. We contend to use radar data to specify the upper boundary condition in the simulation of the high-latitude ionosphere.

详细研究了磁层热流、离子沿磁力线的通量对极区电离层形态的影响，从另一角度证明了目前已建立的电离层模型的有效性，建议用雷达数据作为模型顶部边界条件开展电离层内部物理过程研究。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"