107 Improvement of robust stability and control performance for helicopter using H_2/H_∞ mixed control design method

2010 ◽  
Vol 2010.59 (0) ◽  
pp. 15-16
Author(s):  
Kenta NAGASAKA ◽  
Isao TAKAMI
Keyword(s):  
Robust Stability ◽  
Design Method ◽  
Control Design ◽  
Control Performance ◽  
Stability And Control ◽  
Mixed Control ◽  
And Control

scholarly journals Method for designing multi-input system identification signals using a compact time-frequency representation

2021 ◽  
Author(s):  
Mathias Stefan Roeser ◽  
Nicolas Fezans
Keyword(s):  
System Identification ◽  
Design Method ◽  
Flight Test ◽  
Compact Representation ◽  
Time Frequency ◽  
Stability And Control ◽  
Frequency Representation ◽  
Aerodynamic Parameters ◽  
Definition Of ◽  
And Control

AbstractA flight test campaign for system identification is a costly and time-consuming task. Models derived from wind tunnel experiments and CFD calculations must be validated and/or updated with flight data to match the real aircraft stability and control characteristics. Classical maneuvers for system identification are mostly one-surface-at-a-time inputs and need to be performed several times at each flight condition. Various methods for defining very rich multi-axis maneuvers, for instance based on multisine/sum of sines signals, already exist. A new design method based on the wavelet transform allowing the definition of multi-axis inputs in the time-frequency domain has been developed. The compact representation chosen allows the user to define fairly complex maneuvers with very few parameters. This method is demonstrated using simulated flight test data from a high-quality Airbus A320 dynamic model. System identification is then performed with this data, and the results show that aerodynamic parameters can still be accurately estimated from these fairly simple multi-axis maneuvers.

Stability and Control Performance Analysis of Double EWMA Controller With Metrology Delay

2016 ◽  
Vol 29 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Qing-Song Gong ◽  
Gen-Ke Yang ◽  
Chang-Chun Pan ◽  
Moon-Sang Lee
Keyword(s):  
Performance Analysis ◽  
Control Performance ◽  
Stability And Control ◽  
And Control

Robust stability and control for uncertain neutral time delay systems

2012 ◽  
Vol 85 (4) ◽  
pp. 373-383 ◽  
Author(s):  
R. Sakthivel ◽  
K. Mathiyalagan ◽  
S. Marshal Anthoni
Keyword(s):  
Time Delay ◽  
Robust Stability ◽  
Delay Systems ◽  
Time Delay Systems ◽  
Stability And Control ◽  
And Control

Hybrid Dynamical Systems: Robust Stability and Control

2006 ◽  
Author(s):  
Cai Chaohong ◽  
Goebel Rafal ◽  
G. Sanfelice Ricardo ◽  
R. Teel Andrew
Keyword(s):  
Dynamical Systems ◽  
Robust Stability ◽  
Hybrid Dynamical Systems ◽  
Stability And Control ◽  
And Control
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