Noise Reduction of Automotive Pressure Sensor Signal by Wavelet Transform Under Shock Excitation Calibration
The estimation result of frequency response function of automobile pressure sensor signal processed by shock excitation calibration is greatly affected by noise.Therefore,wavelet transform is selected for signal de-noising.The threshold value should be referred to in actual denoising to ensure the best noise reduction effect.The results show that compared with the wavelet transform method,the SNR method in this paper has higher lifting am-plitude and higher signal response control precision.The output signal noise of the pressure sensor can be effective-ly eliminated by the method presented in this paper,and the output signal of the sensor can be significantly re-duced,and the smoothness can be greatly increased.This research is helpful to improve the detection accuracy of automobile engine oil pressure and ensure smooth driving.
万方数据
维普
