基于自适应数字滤波的旋转机械动平衡边缘计算

为了提高机械设备不平衡故障的判断准确率,针对目前振动信号检测分析计算均在服务器云平台进行的现状,设计一种在边缘计算端实现的方式.通过自适应数字滤波方法分析出旋转机械不平衡故障,利用中心频率自适应带通数字滤波器实现噪声去除,并且将算法固化到嵌入式单片机上.通过中心频率带通滤波器,利用数字化滤波器传递函数,对采集的信号数据...

Dynamic balance edge calculation of rotating machinery based on adaptive digital filter

In order to improve the accuracy of unbalanced fault judgment of mechanical equipment, in view of the current situation that the calculation of vibration signal detection and analysis is based on the server cloud platform, a method implemented at the edge computing end was proposed. The unbalance fault of rotating machinery was analyzed by adaptive digital filter, and the algorithm of adaptive band-pass digital filter based on center frequency was applied to embedded Microcomputer Unit(MCU) platform to remove the noise. The collected signal was passed through the center frequency band-pass filter, and the digital filter transfer function was used to calculate and analyze the data. At the same time, the MCU was used to collect the speed signal, so that the center frequency of the filter changed with the fundamental frequency of the rotor, noise was removed, and the unbalanced vibration signal was obtained. Through the unbalanced vibration signal obtained by calculation, the fault frequency was extracted by FFT, and the dynamic balance fault of rotating machinery was obtained.