Digital normalization interval analysis method and device for steady-state response of feedwater pump rotor
By employing a digital normalized interval analysis method, nonlinear response analysis of the water pump rotor is performed. The normalized rotational speed is mapped to a three-dimensional space and then ultimately to a two-dimensional space. This solves the problem of insufficient uncertainty quantification in traditional methods for multi-solution problems, and achieves accurate uncertainty analysis and elimination of spurious resonance peaks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NO 719 RES INST CHINA SHIPBUILDING IND
- Filing Date
- 2022-08-23
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional methods for quantifying the uncertainty of the nonlinear steady-state response of water pump rotors fail to effectively consider uncertainty factors, leading to failure under multi-solution problems. This results in the inability to accurately quantify the dynamic characteristics and affects the safety and reliability of the power system.
The digital normalized interval analysis method is adopted. By performing nonlinear response analysis on sparse sample space, the characteristic points of the steady-state response curve are marked. The curve is mapped to three-dimensional space using normalized rotation speed to determine the steady-state response boundary, and finally mapped to two-dimensional space to realize uncertainty quantification.
It expands the application scope of traditional interval methods, eliminates spurious resonance peaks, improves analysis efficiency, and ensures the accuracy and reliability of uncertainty quantification.
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Figure CN115455757B_ABST