高频电压注入,high frequency signal injection
1)high frequency signal injection高频电压注入
1.New method for PMSM rotor position detection based onhigh frequency signal injection;一种新型的基于高频电压注入的永磁同步电机转子位置观测方法
2)high-frequency voltage signal injection高频电压信号注入
英文短句/例句
1.The Study of Permanent Magnet Synchronous Motors Control System That Checks Position Using High Frequency Voltage Signal Injection;采用高频电压信号注入法检测位置的PMSM控制系统研究
2.Position Sensorless Control of Permanent Magnet Synchronous Motor Based on High-frequency Signal Injection;基于高频信号注入的永磁同步电动机无位置传感器控制
3.Study of Sensorless Drive for Permanent Magnet Synchronous Motor Based on High Frequency Signal Injection;基于高频信号注入法的永磁同步电机无传感器控制
4.Improved Injecting Variable-frequency Signal Method for Detection of Distribution Network Line-to-earth Capacitance注入变频信号检测电网对地电容的改进
5.An Application of Kalman Filter in the Method of High-frequency Signal Injection;卡尔曼滤波器在高频信号注入法中的应用
6.Research on Sensorless PMSM Control System with Fluctuating High Frequency Signal Injection基于脉振高频信号注入法的PMSM无传感器控制
7.A Study on Technique of Detecting the Initial Location of Rotor on Brushless DC Motor with High-frequency Voltage Pulses高频电压脉冲注入法检测BLDCM转子位置研究
8.Investigation of Fault Diagnosis with Frequency varying Signals for EHV Transmission Lines用变频信号进行超高压输电线路故障诊断初探
9.Experimental Study on UHF Characteristic of PD Signals in Transformer Oil电力变压器局部放电信号特高频特性的试验研究
10.Study on Fourth-Order Fractal Antenna and Signal Processing and Recogntion for UHF Monitoring of PDs in Power Transformers变压器局部放电超高频监测四阶分形天线与信号处理及识别研究
11.Impact of Oil-Paper Barrier on Detected UHF Signal of Partial Discharge in Transformer油纸屏障对变压器局部放电超高频检测信号的影响
12.Design of a high voltage radio frequency signal generator based on AD9835基于AD9835的高压射频信号源设计
13.R. M. S.Value Error for Selective Voltmeter in Measuring FM Signal选频电压表在测量调频信号时的有效值误差
14.TI ? The rate of change of the input voltage waveform during a logic transition (low-to-high or high-to-low).在逻辑转换期间，输入电压信号波形的变化率(由低到高或由高到低)。
15.A Circuit used to Test High Frequency Based on PLC;基于PLC的高频信号测试电路及其实现
16.high-frequency and modulation frequency signal generator高频调频信号发生器
17.JEDEC ? The current into an input terminal when a specified high-level voltage is applied to that input.一个规定的高电平电压信号加到一个输入端时，流进该输入端的电流。
18.band compression of facsimile signal传真信号的频带压缩
相关短句/例句
high-frequency voltage signal injection高频电压信号注入
3)fluctuating high frequency voltage signal injection脉动高频电压信号注入
1.Sensorless control of PMSM based onfluctuating high frequency voltage signal injection本文介绍了一种基于脉动高频电压信号注入法实现面装式永磁同步电机无传感器控制的方法。
4)high frequency current injection高频电流注入法
5)low frequency voltage injection低频电压注入式
1.In the paper,three field circuit ground protections withlow frequency voltage injection which have been used are introduced.文章对国内目前已经投入运行的三种低频电压注入式励磁回路接地保护进行介绍。
6)high frequency injection高频注入
延伸阅读
甚高频和超高频多普勒雷达工作在30～3000兆赫频段的气象多普勒雷达。一般具有很高的探测灵敏度。因探测高度范围可达1～100公里，所以又称为中层-平流层-对流层雷达 (MST radar)。它主要用于探测晴空大气的风、大气湍流和大气稳定度（见大气静力稳定度）等大气动力学参数的铅直分布。原理 这类雷达通过以下几类电磁波和大气的相互作用,对晴空大气进行探测:①由大气湍流运动引起的折射率不均匀结构对电磁波的散射；②稳定大气分层结构对入射电磁波的部分反射；③有时出现于中层大气的自由电子对电磁波的散射；④中层大气中的流星余迹散射。散射体积内空气的运动，使雷达回波具有多普勒频偏。结构 MST 雷达的结构和气象多普勒雷达大致相同。其特点在于：它们一般配备了大型天线（天线阵），有些甚高频段雷达的天线阵，尺度达 30～200米，采用半波振子阵或八木天线振子阵，以相控方式实现波束扫描。超高频段雷达采用直径几十米的可动抛物面天线，这类雷达的发射功率在几百千瓦至 2兆瓦之间，发射功率和天线面积的乘积值在106～1010瓦·米2之间。此外，为获得高灵敏度和高空间分辨率，在脉冲发射体制和回波数据处理方面，也采取一些技术措施。用途 利用回波的多普勒频谱可以进行下述各项测量：①探测大气风场的铅直分布。同一仰角，空间分辨率约为 150～1000米，采用脉冲压缩技术后，分辨率已可达到15米。②探测大气湍流结构。可以给出平均折射率湍流结构常数(C厒)的铅直分布。再引入一些大气湍流模式后，可以推算出湍流耗散率的铅直分布。③探测对流层顶高度及逆温层的高度和厚度。目前，甚高频和超高频多普勒雷达还只能测定上述气象要素的铅直廓线及其时间变化，而不能给出三维空间分布资料。参考书目K.S.Gage，B.B.Balsley,Doppler Radar Probing of the Clear Atmosphere,Bulletin of American MeteorologicalSociety,Vol.59，No.9，pp.1074～1093，1978.
