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- zero crossing current detector 零交叉电流检测器
- The display system "looks" for the zero crossing of the sync pulse. 终端显示系统将识别这个同步脉冲的过零跳变。
- Electrical life: 50000Primary Characteristic: cross current single veloc... 电器寿命: 50000主要特征: 交流单速开关;带自锁.
- The BEMF zero crossing comparators are disabled during open-loop sped-up until the target velocity is reached. 反电动势的过零检测开始是没有被使能的，直到电机转子的速度达到了一定的速度。
- LFMCW radar nonlinear residual frequency errors zero crossing detection periodogram. 标 签 LFMCW雷达 非线性剩余频差 过零检测 周期图.
- A current measuring device comprising a current detector (10) and a photoelectric converter (20). 一种电流测量装置包括电流检测器(10)和光电转换器(20)。
- Wavelet transform zero crossing detection method can be used for the coding and recognition of human iris. 使用小波变换过零检测算法可实现人眼虹膜图像的编码和识别。
- The problems of low space resolution and low time resolution in the current detector system of Positron Emission Tomography (PET) were studied. 摘要研究了正电子发射层析照相(PET)探测器系统所存在的空间分辨率和时间分辨率低的问题。
- May include some or all of the following: SAG and Peak detections, Peak level recording, Line Period measurement and Zero Crossing Detection. 可能包括下列功能中的部分功能或者全部功能:SAG及峰值检测,峰值记录,周期测量及过零检测。
- JONATHAN S.PHIPPS.Some mechanistic insights for using the streaming current detector to measure wet-end charge.TAPPI JOURNAL,1999(8). 戴红旗;毕松林;李忠正.;漂白麦草浆湿部电荷的测量
- And it searches much further for the unvoiced frame according to the ZCR(zero crossing rate),which is differ from unvoiced frame to background frame. 根据背景音和静音过零率的不同,进一步搜索符合要求的静音帧;
- It can be used as the current detector in the experiment of bridge measurement, thermoelectricity field, electromagnetic, photoemission. 如用作电桥测量、温差电场、电磁感应及光电效应等实验中的检流计。
- When the target velocity is reached, the BEMF zero crossing comparators are enabled before leaving the open-loop speed-up subroutine. 到这时，反电动势过零比较电路才开始工作直到电机启动结束。
- The conventional back-EMF zero crossing method was restricted by hardware and control method,and to improve the detecting circuit reduce the influence. 常规反电势过零检测电路由于受到硬件及控制方法的影响,过零点信息不够准确而且有较大的滞后,通过对检测电路的改进来减小这种影响。
- The work requirement,composition and usage method of roll eddy current detector were introduced.By using the detector,the crapped roll and wearing roll can be decreased. 介绍了轧辊涡流检测仪的工作要求、设备组成和使用方法,指出对轧辊进行涡流检测可防止爆辊,减少轧辊磨削量。
- A number of detected electric elements are series and an electronic detective circuits are adopted in the critical current detector for JRT thermal overload protector. JRT型热过载保护器临界电流检测仪采用多受检器件串联及电子变换检测线路,提高了保护器大规模生产的效率和检测的准确度。
- With Brushless DC(BLDC) motor to control special MCU, and ?the technology of zero crossing of back-electromotive force (BEMF),it achieves the control of BLDC's sensorless. 采用专用的无刷直流电机控制单片机，应用反电动势过零检测技术,实现无刷直流电机无位置传感器的控制。
- The zero crossing signal of the true phase back EMF can be directly obtained from the motor terminal voltage by properly choosing the PWM and switch control strategy. 该方法不需要引出电机中性点,通过选择PWM和导通控制策略,就能直接从电机端电压获得反电势过零点信号。
- SUONAN Jia-le,GE Yao-zhong,WANG Ding-an,et al.A new frequency measurement algorithm uninfluenced by zero crossing of voltage[J].Proceedings of the EPSA,1996,8(4): 19-21. [1]索南加乐;葛耀中;王定安;等.;一种不受电压过零点影响的新型频率测量方法[J]
- The current detector (10) comprises a first Faraday element (13), a light-transmitting double refraction element (14), a first optical fiber (15), a second optical fiber (16), and a lens (17). 电流检测器(10)包括第一法拉第元件(13)、光透射双折射元件(14)、第一光纤(15)、第二光纤(16)和透镜(17)。
