Development of a Measurement System for Analyzing Periodic External Forces Acting on Rotating Machineries

Yabui, Shota; Inoue, Tsuyoshi

doi:10.1115/1.4043759

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…The effectiveness of the AFC was experimentally verified in rotating machineries. Moreover, the optimized control scheme of the AFC to compensate for 1x synchronous vibration was developed in our previous study (Yabui and Inoue, 2019).…”

Section: Introductionmentioning

confidence: 99%

Control scheme of adaptive feedforward cancellation considering of Bode’s integral theorem for synchronous vibration suppression in rotating machineries

Yabui

Inoue

2020

Journal of Vibration and Control

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Synchronous vibration is a major obstacle to the stable operation of rotating machineries. In previous studies, active control methods were developed to compensate for synchronous vibration using actuators, such as an active magnetic bearing or a piezo actuator. Adaptive feedforward cancellation is another well-known control method and is used to compensate for the synchronous vibration in the actual system. The control methods can compensate for the synchronous vibration; however, the amplitude of the vibration in other frequency ranges can be increased by the waterbed effect due to Bode’s integral theorem. Therefore, there is a trade-off between the compensation of the synchronous vibration and the negative impact of other vibration. In this article, a novel control scheme for the adaptive feedforward cancellation is proposed to eliminate the negative impact due to the waterbed effect. The proposed method controlled the input signal of the adaptive algorithm in the adaptive feedforward cancellation and realized an ideal feedforward controller worked independently from the feedback loop. The effectiveness of this method was verified experimentally using a test rig.

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Section: Introductionmentioning

confidence: 99%

Control scheme of adaptive feedforward cancellation considering of Bode’s integral theorem for synchronous vibration suppression in rotating machineries

Yabui

Inoue

2020

Journal of Vibration and Control

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Visualization of gear-motor shaft whirling feature based on time-series analysis for rotary machine component condition monitoring

Minemura

Yabui

Iwata

et al. 2020

2020 IEEE International Conference on Prognostics and Health Management (ICPHM)

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Track-Following Controller Design Using an Active Magnetic Bearing for Measurement of the Rotor Dynamics Coefficient of the Annular Seal

Yabui

Inoue

2021

Journal of Dynamic Systems, Measurement, and Control

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This study introduces a track-following controller design to measure the rotor dynamics (RD) coefficient of the annular seal using active magnetic bearings. The annular seal is implemented contiguously to prevent leakage of fluid between the rotating shaft and stationary area of a rotating machine. The force caused by the seal at the contact point can cause vibrations, which should be identified for designing rotating machinery. The RD force is coupled with mechanical and fluid dynamics. Moreover, the dynamics depend on the operating conditions of the rotating machine, namely, the rotating speed and orbit of the rotating shaft. This study proposes a control system for the active magnetic bearing to measure the RD force directly at the arbitrary operating condition. The main controller is designed to satisfy a criterion of the frequency characteristics of the rotating system. In addition, the control system employs adaptive feed-forward cancellation (AFC). This can estimate and compensate for the RD force in the control system simultaneously. The experimental results indicate that the control system can achieve an arbitrary operating condition and measure the RD coefficient of the annular seal in real-time. As a result, the RD coefficient is identified based on the equation of motion.

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Development of a Measurement System for Analyzing Periodic External Forces Acting on Rotating Machineries

Cited by 4 publications

References 20 publications

Control scheme of adaptive feedforward cancellation considering of Bode’s integral theorem for synchronous vibration suppression in rotating machineries

Control scheme of adaptive feedforward cancellation considering of Bode’s integral theorem for synchronous vibration suppression in rotating machineries

Visualization of gear-motor shaft whirling feature based on time-series analysis for rotary machine component condition monitoring

Track-Following Controller Design Using an Active Magnetic Bearing for Measurement of the Rotor Dynamics Coefficient of the Annular Seal

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