半波

• If line length is half wave at a certain frequency and both the load resistance rt and source resistance rs are higher than the characteristic impedance zo , then both the voltages at input and at load are maximum at that frequency and both the voltages at input and at load are minimum at half of that frequency
  负载端电阻及电源电阻均高于传输线特性阻抗情况下，当线长为某频率波长之半波，则输入端与负载端电压在该频率均为最高，在该频率之半时则电压均为最低。
• Many types of dynamic load can be used to analyze the problems of interaction of soils and structures with this program . and it is necessary to use effective stress method to study dynamic deformation problems of soil subgrade . for convenience , traffic load is simplified as half - sinusoidal load , and the soil of subgrade is assumed to be strain - hardening
  将交通荷载简化为半波正弦荷载，假定地基土体为硬化型土，运用本文编制的动态弹塑性有限元程序，分析了单次动力加载和循环动力加载条件下道路横截面与软土地基共同变形特性。
• In this paper , on the basis of absorption of achievements of the research on auditory physiology , an auditory model simulationg the peripheral auditory system and part of the central auditory system is set up . the model is made of the fitlters presenting the characteristics of the basilar membrane for analyzing the voice signals , the half wave rectification modeling the inner hair cells and energy transfer of nerve fiber
  在吸收听觉生理学研究成果基础上，建立了一个模拟外围听觉系统和部分中枢圣经系统功能的听觉模型。模型由表征基底膜的频率分析的带通滤波器组、内毛细胞的半波整流特性和神经纤维的能量转换特性组成，该模型可以作为前端处理来提取语音信号的自相关图谱。
• This paper introduced that how resynthesize the neural firing rate by correlogram inversion , how resume the lost information by half wave rectification inversion . and a solution of speech enhancement based on masking properties of human auditory is proposed and implemented , we can not only analyse and resynthesize speech signal , but also analyse and resynthesize speech signal in noisy entironment with the system
  介绍了如何从信号的自相关图谱中逆变换中得到信号的神经发放率函数，怎样从信号的半波整流逆变换中恢复丢失的信息等等。又根据听觉生理特点提出了抗噪声方案，使我们的语音分析重构系统不仅可以对无噪信号进行重构，而且还可以在噪声环境下的语音信号进行重构。
• New algorithms are presented for the efficient computation of the cylindrical wire kernel , thereby making it possible to achieve solution convergence for a wider class of wire antenna structures . this thesis also make a research on the current distribution and input impedance of half - wavelength antennas with different radii , as well as the radiation pattern of vertical thick antenna above lossy ground
  本文还简要介绍了一种计算粗阵子天线矩量法公式，引入新的算法使之具有良好的收敛性，文中比较了不同半径的半波阵子天线的电流分布和输入阻抗，还讨论了地面上方垂直粗天线的辐射特性。
• Based on 80c196kc single - chip microprocessor ac sample system , this paper especially analyses various factors that influence the precision of half - cycle fournier arithmetic , makes improvement on many ways such as arithmetic , frequency measure , sample step partition , sample synchronization , a / d conversion , anti - jamming and parameter calculation , and finally provides applied hardware chart and software flow chart
  摘要结合80c196kc单片机交流采样系统，著重分析了影响半波付里叶算法精度的各种因素，并在交流采样算法、测频、采样步长划分、采样同步、单片机a / d转换、抗干扰以及参数计算等方面提出了改进，给出了实用的硬件图和软件流程图。
• The bias magnetic field of the bias coil driven by bias current and small signal test current , results in the induced signal of the control coil . the terminal voltage of the control coil is detected by the test circuit . then the signal containing the information of rotor displacement is obtained , from which we can get the dc voltage signal proportional to the rotor displacement through half - wave rectification circuit and low pass circuit . this dc signal is put into a pid controller to get the control signal of the rotor displacement
  偏置测试电路向偏置线圈输入偏置电流和小信号测试电流,两者产生的偏置磁场在控制线圈产生感应信号,检测电路检测控制线圈端电压并提取含有转子位移信息的电压信号,该信号经半波整流电路和低通滤波电路后得到与转子位移成正比例的直流信号,再由pid控制器转换为转子位移的控制信号,最后控制信号输入功放电路产生控制电流,实现闭环控制。