Stage-by-stage Measurement, Regulation and Distribution Method for Dynamic Characteristics of Multi-Stage Components of Large-Scale High-Speed Rotary Equipment Based on Multi-Biased Error Synchronous Compensation

摘要

The present invention provides a stage-by-stage measurement, regulation and distribution method for dynamic characteristics of multi-stage components of large-scale high-speed rotary equipment based on multi-biased error synchronous compensation and belongs to the technical field of mechanical assembly. Firstly, a single-stage rotor five-parameter circular contour measurement model is established, and the five-parameter circular contour measurement model is simplified by using a distance from an ith sampling point of an ellipse to a geometry center to obtain a simplified five-parameter circular contour measurement model. Then, actually measured circular contour data is taken into the simplified five-parameter circular contour measurement model to determine a relationship between dynamic response parameters after rotor assembly and eccentricity errors as well as the amount of unbalance of all stages of rotors. Finally, a rotor speed is set according to the relationship between the dynamic response parameters after rotor assembly and the eccentricity errors as well as the amount of unbalance of all stages of rotors to obtain a critical speed parameter objective function. The high-speed response critical speed parameters for n rotors assembly are optimized by adjusting assembly phases of all stages of rotors, so that a high-speed response to a multi-stage rotor of an aero-engine can be optimized.