Active Control for Multinode Unbalanced Vibration of Flexible Spindle Rotor System with Active Magnetic Bearing

Qiao, Xueguang; Hu, Guojun

doi:10.1155/2017/9706493

Cited by 8 publications

(8 citation statements)

References 11 publications

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“…On the basis of a 19.4% increase in balance capacity, thickness dropped from 38 mm to 28 mm, a drop of 26.3%. e volume of balanced terminal dropped from 160549 mm 3 to 83780 mm 3 with 47.8% drop ratio. e mass of balanced terminal has dropped from 562 g to 387 g with a drop ratio of 31.1%, so that the additional mass added by the balanced terminal to the spindle will be effectively reduced.…”

Section: New Integrated Balancementioning

confidence: 98%

“…So, balancing the liquid in the terminal chamber will stress the chamber due to centrifugal force. Assuming the rotational speed is 30000 rpm, the cavity of the balance terminal is filled with the weight fluid with density 0.8 g/mm 3 , and the centrifugal force produced by the weight fluid in a single cavity can be calculated by the following equation:…”

Section: New Integrated Balancementioning

confidence: 99%

“…Unbalance can cause a disastrous accident in many engineering applications [1,2]. erefore, strict offline balancing will be performed when the spindle leaves the factory [3,4]. However, the offline balance cannot compensate the unbalance mass caused by high-speed expansion, tool or grinding wheel wear, and the offline balance whose balance efficiency is low and requires the disassembly of the main shaft or grinding wheel.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on a No Trial Weight Spray Online Dynamic Balancer

Yun

Mei

Jiang

et al. 2018

Shock and Vibration

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In order to suppress the spindle vibration with high efficiency and high precision, a no without trial weight spray online balance method is proposed in this paper. By analyzing the relationship between the unbalanced excitation and the unbalanced response of the spindle, the relationship between the dynamic influence coefficient and the system model is studied. A high-speed spindle finite element analysis model was established, and the dynamic influence coefficient matrix was identified. A no trial weight spray online dynamic balancing system was developed, which has the advantages of without trial weight and high-precision loading. A new type of integrated balancing terminal that was formed using 3D printing technology was first proposed by our research group, and its advantages in various aspects are significantly higher than traditional assembly balanced terminals. The experimental verification of the without trial weight spray online dynamic balancing system was performed on a high-speed spindle test stand. Experiments show that the no trial weight spray online balancing method proposed in this paper can achieve high-efficiency and high-precision vibration suppression, greatly reducing balance time and cost of the spindle. At the same time, the online balance test also verified the reliability of the integrated balanced terminal.

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Section: New Integrated Balancementioning

confidence: 98%

Section: New Integrated Balancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on a No Trial Weight Spray Online Dynamic Balancer

Yun

Mei

Jiang

et al. 2018

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…Zhao et al, (2018) found that coupling had a greater impact on dynamic bearing forces through substructure methods and generalized finite element methods [23]. Aiming at the unbalanced vibration problem of the spindle drum device during high-speed cutting, Qiao et al, (2017) proposed a method for controlling the optimal influence coefficient of multi-node unbalanced vibration of flexible electric spindle [24]. Liu et al, (2019) proposed an innovative dynamic model for vibration analysis of flexible drum bearings [25].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Balance Method for Grading the Chain Drive Double Threshing Drum of a Combine Harvester

Tang

Liu

et al. 2020

Applied Sciences

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Although the individual threshing drum of a combine harvester was balanced on a dynamic balancing machine before it is assembled, there were still unbalances after multiple drums were assembled with the chain drive. In this paper, the double drums with a chain drive of a crawler combined harvester were selected as the research subject. The aim of this study was to develop a dynamic unbalance mode for grading chain drive double drums. Based on the dynamic unbalance characteristics of the main driven drum, the experimental research on the radial balance of the driven drum end face was carried out. It was known that the chain drive had a direct and obvious influence on the unbalanced phase of the drum. The unbalance of the drive load had an obvious effect on unbalanced amplitude of an active drum through the transfer characteristics of the chain drive. For the multi-stage transmission characteristics of a combine harvester, a step-by-step balanced grading chain drive double drum dynamic balancing method was practiced. Results showed that the unbalanced amplitude after balancing threshing drum I chain transmission mode of the combine harvester can be reduced by a maximum of 91%. Simultaneously, the unbalanced amplitude of threshing drum II can reduced by a maximum of 69.2%. The size and position of the wrap angle of the chain drive would directly affect the phase of the two equivalent unbalanced masses.

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“…Unlike conventional mechanical bearings, magnetic bearings utilize magnetic forces to support a shaft without any physical contact. It offers advantages of no friction, no lubrication, and long lifespan [1][2][3][4][5]. One of the most promising features of magnetic bearings is that the dynamic performance of the shaft is able to be shaped to different applications.…”

Section: Introductionmentioning

confidence: 99%

Vibration Torque Suppression for Magnetically Suspended Flywheel Using Improved Synchronous Rotating Frame Transformation

Peng

Cai

Deng

et al. 2019

Shock and Vibration

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Synchronous vibration, a common issue in active magnetic bearing (AMB) system, is mainly caused by mass imbalance of the rotor. It comes with high-power consumption and serious impact on the housing base, dramatically degrading the performance of AMB. Magnetically suspended flywheel (MSFW), which owns a flat rotor and consequently shows strong gyroscopic effects even at low operating speed, requires additional attention not only for suppressing the synchronous vibration but also for maintaining the overall stability faced with the coupled dynamics. In this work, in order to suppress the vibration torques in MSFW with significant gyroscopic effects, an improved synchronous rotating frame- (SRF-) based control method is proposed. The proposed method introduces the compensation phase for stability adjustment and aims at simultaneously suppressing the synchronous components in the coupled axes. Firstly, the vibration torque model of MSFW is established, and the baseline control strategy for suspension and gyroscopic effects restrain is derived. Then, the principle and implementation of the improved SRF-based vibration torque method are analyzed, which aims at suppressing the synchronous vibration torques through attenuating synchronous components in coil currents. Moreover, the stability of the overall closed-loop system is analyzed. Finally, the effectiveness of the proposed method is verified through simulation and experimental results.

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Active Control for Multinode Unbalanced Vibration of Flexible Spindle Rotor System with Active Magnetic Bearing

Cited by 8 publications

References 11 publications

Investigation on a No Trial Weight Spray Online Dynamic Balancer

Investigation on a No Trial Weight Spray Online Dynamic Balancer

Dynamic Balance Method for Grading the Chain Drive Double Threshing Drum of a Combine Harvester

Vibration Torque Suppression for Magnetically Suspended Flywheel Using Improved Synchronous Rotating Frame Transformation

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