Research on Measurement Method of Turntable Angle Velocity Based on Hilbert-Huang Transform
In this paper,the angular velocity measurement method based on Hilbert-Huang transform principle was studied,which overcame the disadvantages of traditional turntable angular velocity measurement methods,such as method-M and method-T.Based on the analysis of Moiré signal characteristics,the HHT method for Moiré signal characteristics was elaborated in detail.The FPGA-based angular velocity measurement circuit was designed,and the EMD design method in the circuit was explained in detail.A rotating speed measurement experimental platform was built to verify the effect of angular velocity method based on HHT.The experimental results show that the angular velocity measurement method is superior to the traditional methods,and the experimental results of multiple speeds within 120(°)/s show that the rotating speed measurement error of the HHT method is less than 0.9×10-3,and the rotating speed measurement stability is better than 0.5×10-4.
NETL
NSTL
万方数据
维普
