Abstract
This paper presents a unified description of a new approach for contactless detection, identification, and diagnostics of electrical connections and describes an idea and principles of using modal probing for these tasks. Simulation and experimental results on pulsed signal propagation through flat cables demonstrate the modal decomposition of a pulsed signal, which varies depending on the state of the probed wire. It is shown that the presented tasks can be solved by modal probing. The article also considers the analysis of modal distortions in frequency domain and gives the formula for its practical use. This formula can be useful when the pulse duration time is longer than the minimum of mode delay difference. In conclusion, we present further development ideas of the modal probing.
Highlights
To provide error-free and stable performance of electronic and electrical systems it is important to control their functioning
This paper presents a unified description of a new approach for contactless detection, identification, and diagnostics of electrical connections and describes an idea and principles of using modal probing for these tasks
We use the algorithm based on this approach and permitting to calculate the voltage at any node of the network and at any point along any conductor of multiconductor transmission lines. (The algorithm details and various applications are not described here for the sake of brevity but can be found in [22,23,24].) It is the approach that is used in our research, and voltages in the time domain are obtained by applying the inverse fast Fourier transform
Summary
To provide error-free and stable performance of electronic and electrical systems it is important to control their functioning In this case, detection, identification, and diagnostics of electrical connections become urgent [1], especially for such areas as aeronautics and aerospace [2]. The obtained results have demonstrated the possibility of developing new devices fordetecting, identifying, and diagnosing electrical connections. The first steps of modal distortion analysis in frequency domain for contactless diagnostic of electrical connections have already been described [16]. A generalized description of possible applications of modal phenomena for contactless detection, identification, and diagnostics of electrical connections is given for the first time.
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