Development of Advanced Control Design Software for Researchers and Engineers

Modeling and robust Body Freedom Flutter Analysis of flexible aircraft configurations

“…Once the problem is described within the LFT framework, µ analysis enables to predict for a given speed if the set of uncertainties is capable to lead to instability. As an introduction to this final section, a very brief description of these tools is provided (see [4] and references therein).…”

“…1 Andrea Iannelli, Andres Marcos and Mark Lowenberg are with the Department of Aerospace Engineering, University of Bristol, BS8 1TR, United Kingdom andrea.iannelli/andres.marcos/ m.lowenberg@bristol.ac.uk specifically Linear Fractional Transformation (LFT) models and µ analysis [4]. The so-called flutter robust analysis [5], [6] aims to quantify the gap between the prediction of the nominal stability analysis (i.e.…”

Model Reduction Software in the SLICOT Library

“…These matrices are computed from two orthogonal matrices whose columns span the right and left eigenspaces of the product P Q corresponding to the first r largest eigenvalues σ 2 1 , . .…”

“…There are several model reduction tools in the µ-Analysis and Synthesis Toolbox, Version 3.0 [2], which cover similar model reduction problems as sysred. The square-root BTA method is implemented in the functions sysbal and the optimal HNA method is implemented in hankmr.…”

Advanced Motion Control: An Industrial Perspective

“…11) and evaluated as a cumulative power spectrum: the steeper the slope, the more energy content at that frequency; a an H,-controller is calculated [3] using robustness (W,) and performance weightings (W,) at specified frequencies to not amplib, respectively suppress certain disturbances; e the H, controller is implemented on the setup; and 0 the error spectrum is measured and evaluated; a when the performance does not satisfy, the weightings are adjusted, or extra weightings are added, and again a controller is calculated; 0 the implementation, measurement and controller calculation steps are repeated until no further improvements are achieved.…”