Gas-liquid two-phase flow state monitoring method based on multi-modal dynamic nuclear analysis
A gas-liquid two-phase flow, multi-modal technology, used in electrical testing/monitoring, testing/monitoring control systems, instruments, etc., can solve the time lag l is not fully considered, and the flow state of gas-liquid two-phase flow has not yet been seen Monitoring research and application issues to achieve the effect of improving accuracy
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[0055] A method for monitoring the flow state of gas-liquid two-phase flow based on MDKPCA and sliding window technology of the present invention will be described with reference to the accompanying drawings and specific examples.
[0056] A gas-liquid two-phase flow flow state monitoring method of the present invention obtains flow state test data through multi-sensor signal acquisition and processing, uses dynamic autocorrelation and cross-correlation methods to extract the dynamic characteristics of the gas-liquid two-phase flow flow process, and uses kernel The method extracts nonlinear characteristics, combines principal component analysis to establish state models of different flow processes, and combines sliding window technology, the choice of time delay l and window width l' considers the flow characteristics of gas-liquid two-phase flow, realizing the Phase flow state monitoring.
[0057] Such as figure 2 As shown, the flow state test data is obtained by using mult...
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