The group proposes a singular value decomposition filtering method for rotational speed estimation in response to the problems of the frequency band not easy to be determined and the large amount of calculation in the algorithm of rotational speed information extraction of vibration signals without hardware measurement equipment.Therefore,this paper proposed a novel approach to estimate the rotational speed based on the singular value decomposition filtering.At first,the acceleration signal is subjected to reconstruct Hankel matrix.Followed by singular value decomposition,the reconstructed component is determined with the differential singular spectrum criterion.Then,the signal of each component is reconstructed using the method of determining a frequency component from two consecutive singular components.Finally,spectral analysis is performed on the reconstructed components to estimate the current rotational speed.The experiments show that singular value decomposition filtering can effectively extract frequency components from signals,and thus extract speed information from vibration acceleration signals.The comparative experiments proved that the proposed method has the advantages of frequency band adaptation,ease of implementation,and high accuracy.
关键词
转速估计/旋转装备/振动加速度信号/奇异值分解
Key words
rotational speed estimation/rotation equipment/vibration acceleration signal/singular value decomposition
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