CAJ | 학술논문

提出了基于希尔伯特黄变换的直流电机换向电流分析新方法. 首先,运用经验模态分解将直流电机空载起动时的电枢电流分解为系列固有模态函数( IMF). 然后组合不同的IMF分量可得到滤除噪声后的电枢电流、换向电流和直流成分. 最后对换向电流进行Hilbert谱分析,可获取换向电流的幅值/能量时间频率的三维关系图. 相关仿真和试验结果表明了所提方法的正确性.
제출료기우희이백특황변환적직류전궤환향전류분석신방법. 수선,운용경험모태분해장직류전궤공재기동시적전추전류분해위계렬고유모태함수( IMF). 연후조합불동적IMF분량가득도려제조성후적전추전류、환향전류화직류성분. 최후대환향전류진행Hilbert보분석,가획취환향전류적폭치/능량 시간빈솔적삼유관계도. 상관방진화시험결과표명료소제방법적정학성.
A new method of analyzing DC motor commutation current was presented based on HHT. Firstly, the shortcomings of the armature current signal DC motor no-load starting was decomposed into a series of intrinsic mode functions by EMD. Second, denoising of the armature current, commutation current and DC component were obtained based on a combination of intrinsic mode functions. Last, the Hilbert spectrum of commutation current was obtained by Hilbert Transform. Simulation and experimental results demonstrated the correctness of the method.