scholarly journals Experiment of the Influence of Dynamic Balancing Precision on Rotor Dynamic Behavior of 75KW Oil-free Turbo Blower

2021 ◽  
Vol 1081 (1) ◽  
pp. 012049
Author(s):  
Zeda Dong ◽  
Liukai Hou ◽  
Bo He ◽  
Fangcheng Xu
Keyword(s):  
Dynamic Behavior ◽  
Dynamic Balancing ◽  
Turbo Blower ◽  
Rotor Dynamic

scholarly journals Rotor dynamic balancing control method based on fuzzy auto-tuning single neuron PID

2017 ◽  
Vol 14 (10) ◽  
pp. 20170130-20170130 ◽  
Author(s):  
Juan Xu ◽  
Yang Zhao ◽  
Zhiyuan Jia ◽  
Jianjun Zhang
Keyword(s):  
Single Neuron ◽  
Control Method ◽  
Dynamic Balancing ◽  
Auto Tuning ◽  
Single Neuron Pid ◽  
Balancing Control ◽  
Rotor Dynamic

Evaluation of bearing’s cavitation effects on the rotor dynamic behavior

2020 ◽  
Vol 77 ◽  
pp. 49-65 ◽  
Author(s):  
Douglas Jhon Ramos ◽  
Gregory Bregion Daniel
Keyword(s):  
Dynamic Behavior ◽  
Rotor Dynamic

scholarly journals Dry Gas Seal Developments and Contamination Prevention

1996 ◽  
Author(s):  
Stan O. Uptigrove ◽  
Paul S. Eakins ◽  
John E. Sears
Keyword(s):  
Dynamic Behavior ◽  
Preventive Measures ◽  
Operating Experience ◽  
Advanced Materials ◽  
Dry Gas Seal ◽  
Industry Standard ◽  
Gas Compression ◽  
Gas Seals ◽  
Materials Used ◽  
Rotor Dynamic

Dry gas seals have become the pipeline industry standard for sealing of centrifugal gas compression equipment. Recent applications have pushed the limits of materials used in their construction from exposure to ever increasing levels of pressure, speed and temperature. This provides the focus for a discussion of recent advances with the use of advanced materials, higher pressure, speed and temperature applications and bidirectional designs. Operating experience has been very favourable, enough to make dry gas seals a preferred standard, but the failures that have occurred raise two fundamental questions. The first concerns the resistance of gas seals to contamination and the second is their influence upon rotor dynamic behavior. Both of these predominant issues are reviewed along with advancements and preventive measures now available to address these concerns.

scholarly journals Synchronous Dynamics of a Coupled Shaft/Bearing/Housing System With Auxiliary Support From a Clearance Bearing: Analysis and Experiment

1997 ◽  
Vol 119 (2) ◽  
pp. 430-435 ◽  
Author(s):  
J. L. Lawen ◽  
G. T. Flowers
Keyword(s):  
Dynamic Behavior ◽  
Magnetic Bearing ◽  
Dynamic Responses ◽  
Housing System ◽  
Vibration Modes ◽  
Simulation Studies ◽  
Flexible Rotor ◽  
Shaft Vibration ◽  
Rotor Dynamic ◽  
Bearing Analysis

This study examines the response of a flexible rotor supported by load sharing between linear bearings and an auxiliary clearance bearing. The objective of the work is to develop a better understanding of the dynamic behavior of a magnetic bearing supported rotor system interacting with auxiliary bearings during a critical operating condition. Of particular interest is the effect of coupling between the bearing/housing and shaft vibration on the rotor-dynamic responses. A simulation model is developed and a number of studies are performed for various parametric configurations. An experimental investigation is also conducted to compare and verify the rotor-dynamic behavior predicted by the simulation studies. A strategy for reducing sychronous shaft vibration through appropriate design of coupled shaft/bearing/housing vibration modes is identified. The results are presented and discussed.

scholarly journals Dynamical Behavior Analysis of Rubbing Rotor System under Asymmetric Oil Film Force

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Youfu Tang ◽  
Feng Lin ◽  
Qian Zou
Keyword(s):  
Dynamic Behavior ◽  
Dynamic Models ◽  
Journal Bearing ◽  
Dynamic Theory ◽  
Dynamical Behavior ◽  
Rotor System ◽  
System Response ◽  
Oil Film ◽  
Rotor Structure ◽  
Rotor Dynamic

Rubbing is one of the most common and significant faults that exist in the rotor system. It exhibits extremely complicated dynamic behavior. Existing dynamic models are primarily based on the symmetrical rotor structure, in which the oil film forces at both ends of support are considered identical. However, in practice, the oil film force may be differently affected by multiple factors (e.g., viscosity of lubricants, the thickness of oil film, and clearance of journal bearing). In this study, a novel dynamic model of the rubbing rotor system under asymmetric oil film force was developed. Furthermore, based on the nonlinear rotor dynamic theory, its dynamic behavior with different parameters was analyzed, and the corresponding chaotic features were extracted. The results indicated that the evolution law of chaotic motion was more complicated, and the chaotic region of system response was obviously wider under the asymmetric oil film force than the symmetrical oil film force.

A Method of Measuring Rotational Speed for a High-Speed Rotator Based on DSP

2012 ◽  
Vol 233 ◽  
pp. 270-273
Author(s):  
Hao Peng ◽  
Ze Lun Li
Keyword(s):  
Signal Processing ◽  
Rotational Speed ◽  
High Speed ◽  
Reference Signal ◽  
Digital Signal ◽  
High Accuracy ◽  
Measuring System ◽  
Measuring Time ◽  
Dynamic Balancing ◽  
Rotor Dynamic

Requirements for the device of measuring rotational speed is high-accuracy, stabilization, credibility, and shorter measuring time during the dynamic-balancing process. This paper studies a way of measuring rotator reference signal based on DSP(digital signal processing). The way of picking-up rotator reference signal, measuring rotator speed are introduced. This new way of measuring rotational speed in high-speed rotor dynamic-balancing measuring system based on DSP is accurate, simple and convenient.

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