Based on stm32discovery kit was designed device for vibro-acoustic control. For receive of vibro-acoustic signal used piezoelectric accelerometer, which connected to ADC of microcontroller stm32f4vgt6. For Processing data use personal computer with software, which was developed in visual programming language LabVIEW Data from microcontroller to personal computer transmitter with use USB to UART. Culling depend from results of comparison, reference spectrum and current spectrum by values of the correlation coefficient
Keywords: STM32F4 Discovery, ADC, VISA Serial, LabVIEW, adapter USB to UART, vibro-acoustic control, spectrum, reference, signal processing, correlation coefficient
The article compares the S- and SD-methods of sifting IMF. Was considered an example with a test signal and analysed the effectiveness of decomposition.
Keywords: empirical mode decomposition, error of decomposition, intrinsic mode functions, S-method, SD-method, normalized squared difference, operation of sifting, LabView, Hilbert-Huang transform