Rotor nonlinear kinetic characteristic simulation experiment device under multi-field coupling action

Abstract

The invention provides a rotor nonlinear kinetic characteristic simulation experiment device under a multi-field coupling action. A gas radial bearing, a gas thrust bearing and a gas radial-thrust joint bearing are utilized for simulating a function of a gas flow field; a permanent magnetic rotor and a stator coil are utilized for simulating a function of a magnetic field force; a flexible design of the permanent magnetic rotor is utilized for simulating a rotor elastic deformation function; an exciter is utilized for simulating exciting loads in different forms; an active control rubber vibration isolator is utilized for simulating varied and flexible conditions of an experiment table. The device provided by the invention can be used for simulating a rotor nonlinear kinetic characteristic of a micro gas turbine and high speed permanent magnet motor rotor system under a gas bearing supporting action, a gas-elasticity coupling action, a gas-elasticity-magnetism multi-field coupling action, a multi-exciting force action, and varied and flexible conditions, so that the accuracy of the micro gas turbine and high speed permanent magnet motor rotor system kinetic analysis is improved, and an experiment reference base is provided for simulating calculation.

Description

technical field [0001] The invention relates to a rotor dynamic characteristic simulation experiment system, in particular to a rotor nonlinear dynamic characteristic simulation experiment device under multi-field coupling action. Background technique [0002] In recent years, in the turbine power systems in the fields of aerospace, vehicle-mounted ships, and distributed energy, it is common to focus on increasing the operating speed of the shafting, so that the power plant gradually develops to high speed, high power ratio, high thrust-to-weight ratio and micro The trend of development in the direction of globalization, integration, functionality and intelligence. With the continuous increase of the shafting speed, the light structure and large flexibility of the system are gradually highlighted, which makes the rotor more prone to nonlinear kinematic coupling instability. Therefore, how to reveal the nonlinear dynamic response mechanism of the rotor and effectively contro...

AI Technical Summary

Problems solved by technology

Its typical feature is that it is supported by gas bearings and operates under supercritical, strong magnetic field coupling, variable maneuvering states, and multi-vibration source interference. Therefore, its dynamic problems are particularly complicated and prominent, especially when using gas bearings to achieve high-speed operation of the rotor , the whirl and flexible deformation of the rotating shaft and the coupling effects of bearings, magnetic fields, and variable motor conditions will make the dynamic behavior and stability of the system extremely complicated.

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