Self-Tuning Adaptive Control of Forced Vibration in Rotor Systems Using an Active Journal Bearing

Sun, L.; Krodkiewski, J.M.; Cen, Yu Wan

doi:10.1006/jsvi.1997.1466

Cited by 36 publications

(21 citation statements)

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“…The e!ectiveness of the active bearing with #exible sleeves in the attenuation of vibration by means of the self-tuning adaptive control was studied in reference [8]. Authors concluded that the proposed self-tuning controller was suitable for the forced vibration control of the rotor system by incorporating the active journal bearing.…”

Section: Introductionmentioning

confidence: 97%

Experimental Investigation of Dynamic Properties of an Active Journal Bearing

Sun

Krodkiewski

2000

Journal of Sound and Vibration

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Section: Introductionmentioning

confidence: 97%

Experimental Investigation of Dynamic Properties of an Active Journal Bearing

Sun

Krodkiewski

2000

Journal of Sound and Vibration

Self Cite

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“…Direct and indirect actions of control forces onto the rotating shaft can occur either via bearing housing and bushing [19][20][21][22][23][24][25][26][27][28][29] or via bearing clearance [13][14][15][16][17][18]27]. The control actions influence fundamentally four parameters: either the bearing gap function h(θ) [21][22][23][24][25][26] and its gradient dh/dθ [23][24][25], or the fluid viscosity µ [30][31][32], or the fluid film pressure field p(θ) [13][14][15][16][17][18]27]. All four parameters are directly and explicitly written in the Reynolds and Energy equations and significantly affect the bearing properties.…”

Section: Strategies For Rendering Adaptability and Multi-functionalitmentioning

confidence: 99%

Controllable Sliding Bearings and Controllable Lubrication Principles—An Overview

Santos

2018

Lubricants

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Hydrodynamic and aerodynamic lubrication regimes in their controllable forms have been intensively investigated over the last two decades. With the aim of reducing friction and improving thermal, static, and dynamic characteristics of radial sliding bearings, different types of electro-mechanical actuators have been coupled to such bearings. Depending on (i) the actuator type; (ii) the actuation principle, i.e., hydraulic, pneumatic, piezoelectric or magnetic among others; and (iii) how such an actuator is coupled to the sliding bearings, different regulation and control actions of fluid film pressure and lubricant flow can be obtained. The most common actions are: (a) the control of the injection pressure to modify the fluid film pressure statically as well as dynamically; (b) the adjustment of the angle and direction of injection flow (mostly passive action); (c) the control of the sliding bearing gap and its preload via moveable and compliant sliding surfaces; and (d) the control of the lubricant viscosity. All four parameters, i.e., pressure, flow (velocity profiles), gap and viscosity, are explicit parameters in the modified form of Reynolds' equations for active lubrication. In this framework, this paper gives one main original contribution to the state-of-the-art of radial sliding bearings and controllable lubrication: a comprehensive overview about the different types of controllable sliding bearings and principles used by several authors. The paper ends with some conclusive remarks about advantages and drawbacks of the different design solutions for controllable sliding bearings and the main challenges to be overcome towards industrial applications.

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“…They have controlled oil flow injected into recess through servo valve control system, which possibly changes active hybrid pressure and then, is beneficial to reduce the vibration of rotor system. Sun, et al [15] provide a controller which can take self-regulatory to forced vibration of rotating system. This control algorithm can restrain rotor vibration in the case that we do not know the system parameters and distribution of unbalance oil film pressure.…”

Section: Active Control Of Hydrostatic Journal Bearingmentioning

confidence: 99%

The Stability’s Influencing Factors and Active Control of Hydrostatic Journal Bearing

Peng¹,

Lu²,

Chen³

et al. 2012

Proceedings of the 2nd International Conference on Electronic and Mechanical Engineering and Information Technology (2012)

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Abstract. The hydrostatic bearings are widely applied in the field of high-speed precision grinding machine due to high precision and high stiffness. But in order to make the hydrostatic bearings more fit for the precision machining with high speed, we have to solve the instability problem of system due to rotor vibration. The factors that have effect on the stable characteristic of hydrostatic bearings are analyzed and commented. Then the research status of active control of hydrostatic journal bearing is studied. At last we take the prospect and forecast of hydrostatic bearing's development tendencies.

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Self-Tuning Adaptive Control of Forced Vibration in Rotor Systems Using an Active Journal Bearing

Cited by 36 publications

References 0 publications

Experimental Investigation of Dynamic Properties of an Active Journal Bearing

Experimental Investigation of Dynamic Properties of an Active Journal Bearing

Controllable Sliding Bearings and Controllable Lubrication Principles—An Overview

The Stability’s Influencing Factors and Active Control of Hydrostatic Journal Bearing

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