Performances Comparison for a Rotating Shaft Suspended by 4-Axis Radial Active Magnetic Bearings via μ-Synthesis, Loop-Shaping Design, and Sub(H)∞with Uncertainties
Joint Authors
Barbaraci, G.
Virzi' Mariotti, G.
Source
Modelling and Simulation in Engineering
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-07-09
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The control systems applied on active magnetic bearing are several.
A perfect levitation is characterized by maintaining the operating point condition that is characterized by the center of stator coincident with the geometric center of shaft.
The first controller implemented for this purpose is PID controller that is characterized by an algorithm that leads the amplifier to produce control current until the operating point condition is not reached, this is obtained by an integration operator.
The effect of an integrator is essential but not necessary for a centered levitation for example in the robust control characterized by a dynamic model depended on plant of system so that it depends on angular speed as LQR controller does.
In LQR there is not integrator so there is not a perfectly centered section of shaft with center of stator.
On contrary PID controller does not depend on angular speed and it can be easily implemented according some simple rules.
Predictive control is another interesting controller characterized by a multiple controller operating in different condition in order to get the minimum of cost function, but also in this case the angular speed is introduce for the same reason discussed before.
American Psychological Association (APA)
Barbaraci, G.& Virzi' Mariotti, G.. 2011. Performances Comparison for a Rotating Shaft Suspended by 4-Axis Radial Active Magnetic Bearings via μ-Synthesis, Loop-Shaping Design, and Sub(H)∞with Uncertainties. Modelling and Simulation in Engineering،Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-470256
Modern Language Association (MLA)
Barbaraci, G.& Virzi' Mariotti, G.. Performances Comparison for a Rotating Shaft Suspended by 4-Axis Radial Active Magnetic Bearings via μ-Synthesis, Loop-Shaping Design, and Sub(H)∞with Uncertainties. Modelling and Simulation in Engineering No. 2011 (2011), pp.1-10.
https://search.emarefa.net/detail/BIM-470256
American Medical Association (AMA)
Barbaraci, G.& Virzi' Mariotti, G.. Performances Comparison for a Rotating Shaft Suspended by 4-Axis Radial Active Magnetic Bearings via μ-Synthesis, Loop-Shaping Design, and Sub(H)∞with Uncertainties. Modelling and Simulation in Engineering. 2011. Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-470256
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-470256