1) beat interference
差频干扰
2) high frequency interference
高频干扰
1.
Elimination of high frequency interference during the laser-arc hybrid welding;
激光-电弧复合焊接过程中高频干扰的消除
2.
Anaysis of high frequency interference in arc welding inverter and control measures;
逆变焊机的高频干扰分析及抑制方法探讨
3.
This paper enters into some technical problems about anti disturbance wire arrangement in computer controlled AC automatic TIG welding system in high frequency interference environment.
研讨了高频干扰下计算机控制交流TIG焊布线系统抗干扰问题 ,包括干扰类型分析及防止措施、高频干扰产生原因和计算机接口电路隔离措施[1～ 3] 。
3) high-frequency interference
高频干扰
1.
The paper investigates the factors affecting high-frequency interference,of which include the high-frequency interference,the length of welding cable and power line,the output resistance of signal source,the type,length and orientation of signal line,the shielding and grounding of high-frequency oscillator,power line and signal line.
本文以试验为主，研究了影响高频干扰的多种因素，如高频强度，焊接电缆和焊机输入线长度，信号源输出电阻，信号线的种类，长度和空间位置，高频振荡器、焊机输入线和信号线的屏蔽接地等。
2.
In view of the poor high-frequency interference rejection of the original second-order lead correction control strategy,an improved strategy is proposed,which reduces amplitude gain at high frequency without changing phase-frequency characteristic and smooth the phase-frequency characteristic in a broader rage.
针对原二阶超前校正环节控制策略抵抗高频干扰能力差的问题,提出了一种改进型的二阶超前校正环节的新型控制策略,在不改变相频特性的前提下,降低高频时的幅值增益,使幅频特性在较宽的范围内比较平滑。
4) Low-frequency disturb
低频干扰
5) Powerline interference
工频干扰
1.
We apply the multi-resolution analysis(MRA) of wavelet transform(WT), which was proposed by Mallat [5], to suppress the three main types of noises existing in electrocardiogram(ECG) signals: baseline wander,powerline interference and electromyographical interference.
以小波变换的多分辨率分析为基础 ,通过对体表心电信号 ( ECG)及其噪声的分析 ,对 ECG信号中存在的基线漂移、工频干扰及肌电干扰等几种噪声 ,设计了不同的小波消噪算法 ;并利用MIT/BIH国际标准数据库中的 ECG信号和程序模拟所产生的 ECG信号 ,分别对算法进行了仿真与实验验证。
6) Power-line interference
工频干扰
1.
Designs a digital trap for eliminating 50Hz power-line interference and applies it in eliminating 50Hz interference on ECG signals, based on the law for the pole-zero distribution to influence on the characteristics of frequency response.
根据零极点分布对系统频率响应特性的影响规律,设计了一个消除50Hz工频干扰的数字陷波器,并将该陷波器应用于消除心电信号中的50Hz干扰。
2.
This paper introduces the ways in both hardware and software to eliminate power-line interference in MEG detection.
介绍肌电检测中为消除工频干扰而在硬件和软件处理两个方面所采取的措施。
3.
The power-line interference and the linear birefringence effect are pointed out as the key barriers for getting the useful signal from the system,and a way based on modulated light source for depressing the power-line interference is verified,where 2 000 Hz square-wave light is considered as the optic supply.
介绍了全光纤电流互感器的结构,分析了系统输出信号的特点,指出工频干扰及线性双折射效应是影响系统稳定性的主要问题。
补充资料：差模干扰
差模干扰
differential mode interference
切.，侧l曰.日口111以.理模干扰(differential mode interferenee) 出现在电路往、返引线之间的电磁干扰。它与;信号相申联，在受端设备上形成干扰电压。产生差(扰的原因大多是磁场祸合或共模转换。磁场藕合l型电路如图.当往、返引线Ll和L:的环路所链的{磁通变化时，环路中将产生感应电动势均，-一d笋它便是外界磁场辆合引起的差模干扰。共模转换〕的差模干扰见共模干扰。翔轩腆俘/dt，瞅/·甲土甲|‘场 因差模干扰。。在电路中与源电动势(有用信号)氏相串联，使受端阻抗Z上登加一干扰分量。在测量或控制电路中，叠加在有用信号上的这种千扰分量可引起测t误差或控制误动等不良后果。为抑外界磁场祸合引起的差模干‘一源电动势;L，、场一往、返引Z一受端阻抗;声~外界磁通，均 一差模干扰比曳”制差模干扰，可采取双绞线、屏蔽电缆、光缆、滤扭浪涌抑制器等措施。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条