Using the AR–SVR–CPSO hybrid model to forecast vibration signals in a high-speed train transmission system

Liu, Yumei; Qiao, Ningguo; Zhao, Congcong; Zhuang, Jiaojiao; Tian, Guangdong

doi:10.1177/0954409718804908

Cited by 8 publications

(2 citation statements)

References 30 publications

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“…21,22 Nevertheless, the kernel parameters have a greater impact on SVR-based prognosis model. Genetic algorithm 23 and particle swarm algorithm 24 were used to optimize the kernel parameters and penalty factors to improve the prognosis accuracy. However, the prognosis model based on SVR also has the deficiency that the continuity and correlation between data points of time series is not fully considered.…”

Section: Introductionmentioning

confidence: 99%

System-level performance prognosis based on data augmentation for air brake systems of in-service trains

Ding,

Zuo

2023

Advances in Mechanical Engineering

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In order to prognose the performance for air brake systems of in-service trains, a data augmentation method based on correlation analysis and improved multivariate support vector regression was proposed in this paper. By using black box theory and correlation analysis, brake cylinder pressure was extracted as the performance identification signal of air brake system, and the input and output signals were used as the auxiliary signals to construct the black box model of air brake system. Meanwhile, in order to make full use of the obtained data information, a data augmentation prognosis model based on improved multivariate support vector regression was established. Moreover, the optimal parameters of prognosis model were selected by means of particle swarm optimization algorithm, and RMSE and MAE were used as evaluation indicators. Finally, case studies on test-rig performance experiment data of air brake system were conducted. The prognosis model was trained and verified by using the service 1-7N and emergency, service full brake-relief and stage brake-relief experiment data, respectively, and the modeling and calibration error at pressure-holding stage were both in the order of ±5 kPa, which demonstrated the proposed method to be quite accurate and effective.

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Section: Introductionmentioning

confidence: 99%

System-level performance prognosis based on data augmentation for air brake systems of in-service trains

Ding,

Zuo

2023

Advances in Mechanical Engineering

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“…Wang et al [1][2][3] modeled a gear unit and calculated the vibrations and stresses acting on the gearbox, taking into account the driving torque and the vibration transmitted from the wheel. Liu et al 4 proposed a hybrid model that combined the autoregression and support vector regression models to predict vibration time series data, then verified the model with experimental results of vibrations in gear units of high-speed trains. These studies have made it possible to predict the vibration of the entire gear unit, including the bearings.…”

Section: Introductionmentioning

confidence: 99%

Comparison of performance between tapered and cylindrical roller bearings for pinion of gear unit subjected to rotation test

Takahashi,

Suzuki,

Kikawa

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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Tapered roller bearings are often used to support pinions in gear units of electric trains. On the other hand, recently, the application of cylindrical roller bearings with ribs has also been proposed, in which the internal clearance changes little depending on the operating conditions. This study aims to elucidate the effect of differences in just these two types of pinion bearings on the performance of gear units and thereby verify the applicability of cylindrical roller bearings with ribs to railway gear units. Tapered roller bearings and cylindrical roller bearings with ribs of the same dimensions were subjected to rotational tests in the same gear unit. The results showed that the effects of the atmospheric temperature on the maximum temperature, the maximum rate of temperature rise, and the torque of the bearings were not significantly different between the tapered roller bearings and the cylindrical roller bearings with ribs. As the atmospheric temperature decreases, the maximum temperature decreases, and the maximum rate of temperature rise and the torque increase. On the other hand, the endplay values had a significant effect on these values in the tapered roller bearings, while they had little effect on the cylindrical roller bearings with ribs.

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Hybridization of hybrid structures for time series forecasting: a review

Hajirahimi

Khashei

2022

Artif Intell Rev

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Using the AR–SVR–CPSO hybrid model to forecast vibration signals in a high-speed train transmission system

Cited by 8 publications

References 30 publications

System-level performance prognosis based on data augmentation for air brake systems of in-service trains

System-level performance prognosis based on data augmentation for air brake systems of in-service trains

Comparison of performance between tapered and cylindrical roller bearings for pinion of gear unit subjected to rotation test

Hybridization of hybrid structures for time series forecasting: a review

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