A transient characteristic-based balancing method of rotor system without trail weights

Zhao, Shibo; Ren, Xiaomin; Deng, Wangqun; Lu, Kuan; Yong, Yang; Fu, Chao

doi:10.1016/j.ymssp.2020.107117

Cited by 34 publications

(19 citation statements)

References 30 publications

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“…Then, the unbalance parameters are identified by calculating the transient excitation force structures with characteristic points. The details are illustrated in Zhao et al 26 It can be expressed as the following form:…”

Section: Dynamic Balancing Methodsmentioning

confidence: 99%

“…EI-Shafei et al 25 proposed a trial-free balancing method using complex modes and measuring complex vibrations to balance the flexible rotor. Zhao et al 26 proposed a transient characteristic-based balancing method (TCBM), the effectiveness of TCBM method is verified by experimental comparison. The transient high-speed dynamic balancing method without trial weight is a new high-speed dynamic balancing method which takes the measured rotor acceleration transient response information as input and combines the rotor natural mode information to identify the rotor unbalance.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on transient dynamic balancing of the power turbine rotor and its application

Deng

Tong

Zheng

et al. 2021

Advances in Mechanical Engineering

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In the dynamic balancing procedure of the rotor system, the unbalance is determined as a principal parameter which should be identified firstly. In actual engineering, the interference of external noise on the rotor is usually the main factor influencing the identification. In this paper, we focus on the unbalance identification of the power turbine rotor while the vibration response is influenced by signal interference during the balancing process in actual engineering. Fast Fourier Transform (FFT) and wavelet transform are used to analyze the collected original signal. Butterworth filter and Chebyshev type I filter are employed to test signal processing. The transient dynamic balancing method and the single plane influence coefficient method are used to balance the three balancing bosses of the rotor, and the balance efficiency is compared. The results show that, the signal fluctuation of boss 3 in high-frequency band is less than boss 1 and boss 2. Butterworth filter is more effective than Chebyshev type I filter in filtering the transient response data. The transient dynamic balancing method requires one test run without any trial-weights. More importantly, compared with the influence coefficient method, the transient dynamic balancing method has a better balancing effect.

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Section: Dynamic Balancing Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on transient dynamic balancing of the power turbine rotor and its application

Deng

Tong

Zheng

et al. 2021

Advances in Mechanical Engineering

Self Cite

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“…Rotor balancing methods have been developed from various perspectives including algorithm modification and introduction of advanced technology, for example, Bin et al [21,22] investigated and balanced a kind of multirotor turbomachinery shaft system with N + 1 supports analytically and experimentally. Zhao et al [23] proposed a transient characteristic-based balancing method (TCBM) combined with dynamic load identification (DLI) technique to identify the unbalance parameters of the general rotor system. Li et al [24] proposed a novel modal balancing technique without trial weights by combining the modal balancing method with finite elements method.…”

Section: Related Workmentioning

confidence: 99%

A Novel Balancing Method for Rotor Using Unsupervised Deep Learning

Zhong

Chen

et al. 2021

Shock and Vibration

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A novel balancing method for rotor based on unsupervised deep learning is proposed in this paper. The architecture of the proposed deep network is described. In the proposed network, compared to the supervised deep network, additional convolution layers are applied not only for the learning of the inverse mapping but also for identifying the unbalanced force without labeled data. The equivalent value and position of imbalances in two correction planes are obtained. A case study of a rotor with two discs supported by sliding bearings is conducted. Preset imbalances are balanced well by the proposed method. And, using the state values at different time intervals, no extra weight trails are needed. The results show that the proposed balancing method gives consideration to both cost and accuracy.

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“…The rotor system is the core component of rotating machinery. To optimize and improve the dynamic performance, the dual-disk rotor system is widely employed in modern aero-engines [1,2]. It is more complicated than single-rotor systems in both the structural and dynamical regimes [3,4].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Dual-Disk Rotor System with Uncertainties Based on Chebyshev Convex Method

et al. 2021

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In this paper, a non-probabilistic Chebyshev convex method (CCM) for the transient dynamics of a dual-disk rotor system with uncertain parameters is proposed. The dynamic equation of the dual-disk rotor system is derived by the finite element method (FEM), and the deterministic response is obtained. Then the CCM is used to obtain the uncertain transient responses of the dual-disk rotor system. The amplitude ranges and response characteristics are quite close to the calculation results of the convex Monte Carlo simulation (CMCS), which verifies the accuracy and validity of the CCM. The experimental results demonstrate that the proposed method has good performance in the uncertainty analysis of the rotor system. More importantly, the results will be helpful to understand the dynamic behavior of dual-disk rotor systems with uncertainties and provide guidance for robust design and analysis.

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A transient characteristic-based balancing method of rotor system without trail weights

Cited by 34 publications

References 30 publications

Investigation on transient dynamic balancing of the power turbine rotor and its application

Investigation on transient dynamic balancing of the power turbine rotor and its application

A Novel Balancing Method for Rotor Using Unsupervised Deep Learning

Dynamic Response of Dual-Disk Rotor System with Uncertainties Based on Chebyshev Convex Method

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