Abstract
In this paper, a new offset measurement method for underwater rod-shaped high-speed moving body has been presented. Based on the principle of electromagnetic induction, the offset test reference model of the underwater detection sensor was developed to analyze the influence of offset on the induced electromotive force of the underwater inductive sensor. Moreover, simulations by MATLAB was carried out to analyze the influence of offset on the induced electromotive force of the measurement system while underwater high-speed moving body passing through the induction coil in different direction. Two important factors correlated closely with the offset were obtained, which are the amplitude and the width between the adjacent peak and peak-valley of the induced electromotive force caused by the high-speed moving body through the induction coil. And most importantly, an offset measurement experiment of underwater high-speed moving body based on single induction coil was conducted to validate the simulation results obtained above. By comparing the experiment results with the simulation data, the new offset measurement method put forward in this work was proved to be feasible.
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