Hardware-in-the-loop simulation on controllable hydrostatic thrust bearing

Shao, Junpeng; Han, Guo-Niu; Zhang, Yanqin; Yang, Dong; Li, Hongmei; Liu, Jiachun

doi:10.1109/ical.2008.4636314

Cited by 4 publications

References 5 publications

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Influence of the profile of longitudinal grooves of various depths on increasing static characteristics of radial gas bearings

Vishtak

Petrov

Savulyak

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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Radial gas bearings with one line for supplying compressed gas to the working gap with blind microgrooves of constant width and variable depth of the different profiles are considered. Such as with constant depth microgrooves; triangular or stepwise with decreasing depth of grooves along the course of compressed gas. For them, the radial lifting force, the recovery moment for angular displacements of shaft in the range of constancy of radial and angular stiffness and consumption of compressed gas for the bearing’s work are found. Calculations and studies have shown that a radial bearing with longitudinal microgrooves whose depth decreases linearly in the direction of gas flow has a large radial lifting force and a recovery moment for angular displacements of shaft compared to a bearing with microgrooves of constant depth. Bearings with stepped longitudinal microgrooves with greater depth at the entrance to working gap are operable in the range of practical use of bearings and have greater dimensionless radial and angular stiffness and are more economical compared to bearings with microgrooves of constant depth. In practical activities (when designing spindle units), it is not recommended to use gas bearings with a variable depth of microgrooves having a minimum depth at the entrance to working gap. With optimal design parameters, the flow rate of compressed gas for bearings with longitudinal microgrooves of different transverse profiles with alignment of shaft and sleeve is almost the same (the difference is about 7, 8%).

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Influence of the profile of longitudinal grooves of various depths on increasing static characteristics of radial gas bearings

Vishtak

Petrov

Savulyak

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

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Control Method of Heavy Hydrostatic Thrust Bearing

Han

Yang

et al. 2009

2009 International Conference on Intelligent Human-Machine Systems and Cybernetics

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Recess Design and Dynamic Control of an Active Compensating Hydrostatic Bearing

Shih

Shie

2013

JAMDSM

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This paper describes the optimum design of recess shape for the proposed hydrostatic bearing, and dynamic control of oil film thickness for an active compensating hydrostatic bearing by using a servo valve and a proposed controller. First of all, this study is theoretical study concerning static performance of a hydrostatic bearing having recess of optimal shape parameters. Because of the recess of the traditional hydrostatic bearing only has one oil outlet that is easy to concentrate the pressure of the recess at the outlet, leading to non-uniform pressure distribution. Hence, the objectives of this study are to design a hydrostatic bearing with high load capacity, high stiffness, low flow rate and uniform pressure distribution by using HTGA/Gray optimal approach. In addition, this study integrates servo control technology to compensate the pressure of the bearing with an intelligent nonlinear controller to maintain a constant oil film thickness. However, the hydrostatic bearing is a nonlinear system and is affected by numerous uncertainties; that is, the parameters can be changed by factors, such as temperature, leakage, and disturbance. Therefore, the proposed controller proposes a self-tuning mechanism to modify the output scaling factor, and adds a dead zone compensator to avoid the insensitive area of a servo valve. Finally, the experimental results are used to verify the feasibility and practicality of this study.

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Hardware-in-the-loop simulation on controllable hydrostatic thrust bearing

Cited by 4 publications

References 5 publications

Influence of the profile of longitudinal grooves of various depths on increasing static characteristics of radial gas bearings

Influence of the profile of longitudinal grooves of various depths on increasing static characteristics of radial gas bearings

Control Method of Heavy Hydrostatic Thrust Bearing

Recess Design and Dynamic Control of an Active Compensating Hydrostatic Bearing

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