Adaptive filtering method for fluid pressure by using wavelet transform

作者：Gu Lichen^*; Yan Xiaole; Liu Zehua

来源：Journal of Vibration, Measurement & Diagnosis, 2009, 29(2): 205-208.

• Adaptive filtering algorithms
• Different scale
• Filter processing
• Fluid pressures
• Hydraulic system
• Pressure signal
• Signal filtering

In order to suppress noises in fluid pressure signals, an adaptive filtering algorithm by using wavelet transform was proposed. The fluid pressure signal and the noise both have different features after wavelet transform on different scales, which lay a foundation for the algorithm. Firstly, the signal was decomposed with wavelet on multi-scales, and then a variety of signal filtering parameters were determined for different scaled signals. Finally, an adaptive filter processing was conducted. The filtering result of the pressure signal obtained in the hydraulic system shows the method is more effective than others.

• 出版日期2009