Equipment operation condition transmission path parameter calculation method and system

Abstract

The invention discloses an equipment operation condition transmission path parameter calculation method and system, and the method comprises the steps: determining the position of an excitation sourceand a transmission path according to the mechanical structure features of a to-be-tested object, determining the number of reference points and the optimal installation position through employing a reference point optimization method, and guaranteeing the linear irrelevance of different conditions under test condition parameters, acquiring vibration response signals of the final reference point installation position and the target point installation position under stable excitation of the test working condition parameters, and performing crosstalk removal processing on the acquired vibrationresponse signals; the vibration response signals after crosstalk removal processing are used for carrying out least square support vector regression training on the operation condition transmission path analysis model to obtain a transmission function matrix, the problem of matrix morbidity of a traditional operation condition transmission path analysis method is avoided, condition data can be completely reserved. And good generalization performance can still be maintained in a test environment with a complex environment.

Description

technical field [0001] The invention belongs to the field of vibration reduction and noise reduction of mechanical equipment, and in particular relates to a method and system for calculating transmission path parameters of equipment operating conditions. Background technique [0002] High-end equipment such as gas turbines have the characteristics of numerous internal parts and complex coupling connections. The vibration generated by the active parts during operation will be transmitted to the entire equipment through the connecting parts, resulting in deformation of the mechanical structure and increased wear of the main components, which in turn affects the equipment. Therefore, it is imperative to carry out active vibration control measures for high-end equipment such as gas turbines. Vibration active control strategies can be divided into vibration source control and transmission path control. Among them, vibration source control requires design optimization of active co...

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Problems solved by technology

When analyzing the transmission path of operating conditions for high-end equipment such as gas turbines, due to its large size and complex mechanical structure, it requires a large number of reference points, which can easily lead to serious ill-posed problems in the input matrix

The traditional method uses regularization to reduce the ill-conditioned degree of the matrix, which leads to discarding part of the working condition information in the solution process, and the result cannot fully reflect the real contribution of each transmission path, which affects the control accuracy of the transmission path, and cannot effectively improve the active vibration of high-end equipment such as gas turbines. control precision

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