Abstract
Positive-position feedback has been presented as a suitable alternative to the negative-velocity feedback approach taken in active damping applications. This has motivated the application of Negative-Imaginary Systems theory to study the stability of controllers based on positive-position feedback. However, this theory cannot be applied in cases where low-frequency dynamics of the sensors, actuators and/or controllers hinder the application of Negative-Imaginary stability conditions. This work extends the theory of Negative-Imaginary Systems by obtaining simple analytical stability conditions when such low-frequency restrictions are present.
Original language | English |
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Pages (from-to) | 2900-2909 |
Number of pages | 10 |
Journal | Journal of Sound and Vibration |
Volume | 332 |
Issue number | 12 |
Early online date | 4 Feb 2013 |
DOIs | |
Publication status | Published - 10 Jun 2013 |
Keywords
- vibration control
- stability