A multifunctional double-disc rotor test rig for operating modal identification of rotating machinery

By designing a multi-functional dual-disc rotor test bench, integrating a variable speed drive system and multiple types of sensors, the limitations of existing rotor test benches in operating condition simulation and signal acquisition are solved. This enables high-precision, multi-scenario operating mode identification, improving the accuracy of experimental data and the reliability of fault diagnosis.

CN224535355UActive Publication Date: 2026-07-21ZHENGZHOU UNIV
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHENGZHOU UNIV
Filing Date
2025-10-22
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing rotor test benches have limitations in terms of operating condition simulation and signal acquisition, making it difficult to meet the requirements of high-precision, multi-scenario application operating mode identification, especially in complex operating conditions where they cannot truly reproduce the dynamic characteristics of the rotor system.

Method used

A multifunctional dual-disc rotor test bench was designed, which integrates a variable speed drive system, a magnetic powder brake and an electromagnetic vibrator. Equipped with multiple types of sensors, it can simulate complex working conditions such as variable speed, variable load and external excitation, and simultaneously collect multi-dimensional signals, including speed, torque, vibration, displacement and shaft center trajectory.

Benefits of technology

It enables accurate simulation of complex working conditions and high-precision signal acquisition, improves the accuracy and comprehensiveness of modal identification data, provides a reliable experimental platform for the dynamic characteristic analysis of rotating machinery, and improves the reliability and experimental efficiency of fault diagnosis.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224535355U_ABST
    Figure CN224535355U_ABST
Patent Text Reader

Abstract

The utility model discloses a multifunctional double-disc rotor test bed for rotating machinery operation modal identification. The test bed is based on a workbench with T-shaped grooves, and integrates a rotor assembly, a driving motor, a magnetic powder brake, an electromagnetic exciter and multiple types of sensors. The rotor assembly includes a main shaft and a double-disc structure, and an excitation bearing is arranged between the two discs. The driving motor drives the rotor through a transmission shaft, the magnetic powder brake is detachably connected to the main shaft to realize load adjustment, and the electromagnetic exciter applies external excitation to the excitation bearing. The multiple sensors synchronously collect speed, torque, vibration, displacement and shaft center trajectory signals. The multifunctional double-disc rotor test bed for rotating machinery operation modal identification of the utility model is convenient for component adjustment through modular T-shaped groove design, the double-disc structure is close to engineering practice, multiple systems are cooperated to realize multi-working condition simulation, multi-dimensional signal collection ensures accurate identification, the overall structure is compact and stable, and the utility model can provide a reliable experimental platform for rotating machinery operation modal identification and dynamic characteristic analysis.
Need to check novelty before this filing date? Find Prior Art