Excitation相关论文
基于深度学习的文本区域检测的目标是从自然场景图像中定位并框取文本区域。图像中包含丰富的信息,文本属于其中的重要信息之一,准......
The aim of this thesis about active isolation vibration system for the bed of ultra-precision turning machine is to intr......
Compared to the current eddy braking patterns using a single magnetic source,hybrid excitation rail eddy brakes have man......
This paper adopts free interface modal synthesis method to divide the whole automobile model into many sub-structures an......
Gravity dam is a typical structure that has been frequently used in the fields of water conservancy engineering, and the......
A novel red phosphor Ca2GeO4:Eu3+ was prepared by the traditional solid state reaction. X-ray powder diffraction (XRD) a......
With increasing excitation wavelength from 514 to 782 nm, a significant difference in the Raman spectra of SiC nanorods ......
Blue emitting phosphor SrZn_2(PO_4)_2:Eu~(2+) is synthesized by a high temperature solid state method,and the luminescen......
We discuss the dynamics of ultrashort pulsed laser excitation in bulk optical silica-based glasses(fused silica and boro......
The wealth of signal that are available by electron beam excitation has made theTEM an attractive tool for a complete c......
A numerical solution of the weight function for a two-electrode electromagnetic flowmeter was proposed. The solution was......
A highly efficient single-photon source based on a semiconductor quantum dot(QD) is a promising candidate in quantum inf......
TiO2 sols modified by rare earth (RE) ions (Ce4+, Eu3+, or Nd3+) were prepared by coprecipitation-peptization method. T......
Rare earth borogermanates as a group of stable compounds provided various potential properties important for modern scie......
A multi-physics hybrid numerical model,which couples electric,magnetic,thermal and flow fields,was used to investigate e......
A very low bit rate algorithm for encoding speech signals at 825 bps based on a mixed harmonic and stochastic modeling o......
The principles of G.729 algorithm are analyzed. It proposes an optimal approach of adaptive codebook search. Realized on......
The dynamic characteristics of a belt conveyor are determined to a large extent by the properties of the belt. This pape......
Based on guided wave theory and considering the grouted rock bolt as waveguide medium, we have constructed a three dimen......
由于非调速系统的直流电机背包风机及直流电机励磁控制在设计上存在缺陷，在轧机换辊及处理断带故障期间，背包冷却风机及直流电机励磁......
作为一种新型变压器产品,非晶合金变压器目前缺乏足够的异常试验数据.提出一种理论与试验相结合的方法,在试验过程中逐步排除可能......
The Chandler wobble excitation function (hereinafter, geodetic excitation) is obtained by removing the seasonal componen......
A new electrical resistance tomography (ERT) system, based on the bi-directional current pulse technique, is developed. ......
Compositional-dependent heavy metal lead borate glasses doped with Tb3+ ior were investigated.Green luminescence related......
针对含有可控串联补偿器(TCSC)设备的多机电力系统,研究了TCSC与发电机励磁的最优控制规律。首先,建立了含TCSC的多机电力系统非线......
风力发电系统具有较强的非线性和不确定性.基于云模型理论设计了云模型励磁推理器,对发电机进行励磁控制.该推理器由电压推理模块......
The problem of how the coherent structures in the wall region of a turbulent boundary layer could be excited by the dist......
在高校混合教学模式下,开展多样化的教学方式。原有的在线教学互动策略,只重新建设教师队伍,加强师生之间的互动,但该因素只是影响......
A Nonlinear Coordinated Approach to Enhance the Transient Stability of Wind Energy-Based Power Syste
This paper proposes a novel framework that enables the simultaneous coordination of the controllers of doubly fed induct......
汽轮机作为发电厂重要的生产设备之一,对电厂的稳定和持续工作具有重要作用。汽轮机启动过程中存在的不安全因素会使整个机组的响......
针对管道漏磁内检测图像化显示研究,采用磁偶极子模型建立漏磁场分布与缺陷特征之间对应关系。建立Φ219管道有限元仿真模型,研究......
励磁装置的工作电源正常与否关系到整台发电机能否安全稳定的运行,现有常用励磁系统工作电源设计方案存在一些不足,武汉市陆水自动......
兴趣是求知的内在动力。但是学习兴趣不是天生的，主要源于教师如何引导学生，充分调动学生对学习的积极性和主动性，进而能创造性地学，最......
结合Backstepping方法和滑模控制,同时考虑电力系统的参数不确定性,设计了励磁控制器实现对多机电力系统的励磁解耦控制。采用3机9......
水电站基础自动化设备在水电站的运行中占有很重要的地位,文中介绍了水电站励磁、调速器、保护、直流系统设备选型中应考虑的一些......
利用耦合系统法,我们计算了在带宽小于原子自然线宽的压缩真空驱动下的二能级原子的荧光谱和发射谱,结果发现,量子压缩真空场在发......
他励直流电机电枢并联运行时负载不能自动均衡，必须设计相应的负载均衡电路进行调节。详细分析了调节他励电机励磁的办法，解决了胜利......
提出一种新的基于LPC(线性预测编码)的BSP(二项式正弦脉冲)语音压缩编码方案,即根据语音产生的原理,以BSP作为LPC激励源,并在此基......
用Czochralsky方法和铱坩埚感应加热技术生长出了尺寸为φ35mm×40mm的掺铈硅酸镥(LSO:Ce)闪烁晶体.透射光谱表明,由于铈离子......
本文作者结合自己多年的实际工作经验,从多方面介绍了如何做好预算管理,建立预算趋准机制和考核激励机制,是企业获得最佳的生产率......
期刊
介绍了发电机励磁系统接地检测技术的原理和主要特点。以三机无刷励磁系统为例,对励磁系统接地检测技术进行了分析。......
大型发电机励磁系统的性能不仅对发电机和电力系统自动电压调节有重要的作用,对电力系统的稳定也有重要的影响。本文结合燃气机组A......
期刊
该文通过一起发电机失磁故障的原因分析,总结了失磁故障后现场检查和保护动作分析的过程及相应的防范措施,具有较好的指导意义和实......
根据宝钢电厂0号和3号发电机无功调差试验数据，计算两机调差特性，分析了发电机无功分配与机组容量不相配的问题，为此提出了对于并列运......
在发电机微机励磁调节器中，数字移相触发单元是一个重要组成部分，通过它输出不同相位的触发脉冲实现励磁调节器对励磁电压的调节。一......
建立了先进静止无功发生器（ASVG）与发电机励磁的五阶非线性状态空间数学模型，并采用多指标非线性控制（MNC）方法，设计该系统的协调控制器......
介绍了小型同步发电机的自动励磁调节系统的作用和特性,以及它的基本工作原理、线路特征及具体的电路图,并在此基础上对该自动励磁......
为改善船舶电力系统的稳定性能,提出了在具有自动电压调节器的船舶发电机励磁系统的基础上,加入电力系统稳定器的新方法。电力系统......
研究了利用音叉原理自制的激振式疲劳极限测试系统。该系统利用微机控制 ,通过硬件控制系统设计和软件设计 ,实现了曲轴疲劳极限测......
分析了发电机励磁系统动态性能的要求,阐明了发电机空载阶跃响应是检查发电机小干扰性能的主要试验方法以及阶跃量对空载阶跃试验......
