Robust Individual Blade Control Algorithm for a Dissimilar Rotor

2002 ◽  
Vol 25 (5) ◽  
pp. 915-923 ◽  
Author(s):  
Beatrice Roget ◽  
Inderjit Chopra
Keyword(s):  
Control Algorithm ◽  
Individual Blade Control ◽  
Blade Control

Smart Spring Impedance Control Algorithm for Helicopter Blade Harmonic Vibration Suppression

2005 ◽  
Vol 11 (4) ◽  
pp. 543-560 ◽  
Author(s):  
Yong Chen ◽  
Viresh Wickramasinghe ◽  
David Zimcik
Keyword(s):  
Control Algorithm ◽  
Vibration Suppression ◽  
Impedance Control ◽  
Reference Signal ◽  
Vibration Modes ◽  
Blade Vibration ◽  
Helicopter Blade ◽  
Individual Blade Control ◽  
Blade Section ◽  
Blade Control

In this paper, an adaptive impedance control algorithm is developed for the Smart Spring to suppress helicopter rotor vibration through individual blade control. The harmonic frequencies of the blade response were estimated using parametric methods, which were used to synthesize the reference signal. Multiple equivalent notches were formed at corresponding frequencies to selectively suppress the blade vibration modes. To improve the adaptability of the algorithm, an on-line control path identification method is presented. The algorithm was implemented on a MATLAB xPC platform using the hardware-in-the-loop concept. Closed-loop experiments, conducted using a fixed helicopter blade section in both shaker and wind tunnel tests, have achieved significant vibration suppressions. Experimental results demonstrate that the algorithm, which is able to select the blade vibration modes and track the variations in vibration due to changes in flight condition, is promising for helicopter individual blade control applications.

scholarly journals Investigation on the potential of individual blade control for lifetime extension

2018 ◽  
Vol 1037 ◽  
pp. 032006 ◽  
Author(s):  
Vasilis Pettas ◽  
Mohammad Salari ◽  
David Schlipf ◽  
Po Wen Cheng
Keyword(s):  
Individual Blade Control ◽  
Blade Control ◽  
Lifetime Extension

Rotor Hub Vibration Reduction Analysis Applying Individual Blade Control

2021 ◽  
Vol 49 (8) ◽  
pp. 649-660
Author(s):  
Taejoo Kim ◽  
Seong-Yong Wie ◽  
Minwoo Kim ◽  
Dong-geon Lee
Keyword(s):  
Vibration Reduction ◽  
Individual Blade Control ◽  
Blade Control
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