Dynamic real-time correction method and system under multi-physics coupling

Abstract

The application discloses a dynamic real-time correction method and system under multi-physical field coupling, and the method comprises the following steps: S100, an integrated double-cavity sensor containing a strain sensing cavity and an environmental reference cavity is constructed, so that the reference cavity only outputs a coupling signal of water pressure and temperature; S200, a variational modal decomposition is performed on a measurement signal and a reference signal, a false modal component is identified and removed, and an observation signal and an environmental fingerprint signal are reconstructed; S300, a high-dimensional phase space vector is constructed, a trajectory feature thereof is analyzed, and a hysteresis loop state of the sensor is identified; S400, a multi-core correlation vector machine regression model is established, and preliminary corrected structural deformation data are obtained; and S500, a long-period trend item in the signal is extracted, a pure equipment drift amount is calculated and removed, and a final deformation value is output. The multi-source interference coupling problems of water pressure, temperature, turbulent noise and equipment creep in the underwater environment are solved, and the adaptability, anti-interference ability and data reliability of the underwater measurement scene are improved.

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