The features of the frequency spectrum of the voltage waveform induced in a search coil placed in the stator slots of the brushless ac exciter are used in pattern recognition. 然后进行快速付里叶变换,计算感应电势波形的幅频特性作为模式识别的特征提取。
The Methods of Determining Earth Conductivity by Search Coil 大地导电率的线圈测试法
NQR and EMI signals can be obtained with the same pulser and search coil. It detects explosives and metal objects at the same time, solves the problem to detect the explosives with metal cases and is of high application value. 它利用一个脉冲激励源和探测线圈,可同时获得NQR和EMI信号,即可同时探测炸药和金属物体,解决了NQR技术不能探测金属外壳未爆弹药的问题,具有较高的实际应用价值。
Again, apply the iterative search optimization method to analyze and research the optimization of voice coil motor structure size using the maximum ratio of output force to the total movement part mass as the target under a certain volume. 再次,应用迭代搜索优化方法,分析研究在一定的容积下以最大化输出力与运动部件总质量比为目标优化音圈电机结构尺寸。
Based on literature search, the dissertation summarized the characteristics and application of GMM, and analyzed the research status of the thermal management, thermal structure design of the driving coil, system identification and control strategies of the GMM smart component. 本文首先通过文献调研,概述了超磁致伸缩材料的特性及应用,对超磁致伸缩智能构件热控制技术、线圈热优化设计、模型辨识及控制策略的研究现状进行了分析。