Research On Extraction Of Characteristic Parameters Of Voltage Wave Based On Tensor Multi-modal Algorithm

With the development of modern electronic science and technology,the electromagnetic environment of electronic system is becoming more and more complex.In the design structure of the precision instrument,the actual electronic system is packed in an airtight metal vessel and connected to the outside through wires.The external electromagnetic wave is coupled to the interior through the small hole and induces a transient current.Then it produces destructive interference to the electronic system.Electromagnetic coupling is a transient electromagnetic field phenomenon.Analyzing it directly is too complicated and goes against the practical application.For this reason,American scholar Baum put forward an indirect analytical method which can extract characteristic parameters of electromagnetic coupling.By extracting the characteristic parameters of the voltage wave under the excitation source,the analysis of the anti-interference ability of the electronic system is realized.Therefore,studying the characteristic parameters of the voltage wave is of great significance to improve the antiinterference ability of the equipment.In the study of characteristic parameters of voltage wave,the traditional method is to use Fourier transform or matrix beam algorithm to extract the characteristics of the response waveform.The realization process is complicated and cannot reflect the law of transient response.Therefore,a new research algorithm is needed to extract characteristic parameters of the voltage wave so as to improve the accuracy of the extraction of characteristic parameters and ensure the effectiveness of practical research on the simulator.As a new research field of signal process,tensor multimodal algorithm is more suitable for the extraction of complex signal characteristic parameters than traditional decomposition methods.It can accurately reflect the authentic characteristics of the system itself through measured responses.In this paper,a voltage wave simulator is used as an experimental platform to generate the voltage pulses which are closed to the nuclear explosion.According to the actual needs,build a simulator platform to obtain the responsive waveforms of transient voltage pulse.Combined with the electromagnetic field theory,the tensor multi-modal algorithm is adopted to extract and study the characteristic parameters of the actual measured voltage waveform.Based on the study of tensor multimodal algorithm theory,the measured waveform data is modeled according to the exponential fitting method and the Hankel tensor on the basis of the tensor model is proposed.The traditional high-order orthogonal iterative algorithm of tensor decomposition is improved and a fast HOOI algorithm appropriate for Hankel tensor is presented to complete the extraction of characteristic parameters of the voltage wave.The data comparison between the reconstructed waveform and the actual output voltage waveform shows that the characteristic parameters extracted by this method can effectively describe the change rule of the transient voltage wave and provide a theoretical basis for future research on electromagnetic coupling phenomena.