Yaw Control of an Unmanned Helicopter Using Adaptive Model Feedback and Error Compensation

2016 ◽  
Vol 29 (2) ◽  
pp. 06015002 ◽  
Author(s):  
Shouzhao Sheng ◽  
Chenwu Sun
2011 ◽  
Vol 23 (6) ◽  
pp. 1091-1099 ◽  
Author(s):  
Hiroaki Nakanishi ◽  
◽  
Sayaka Kanata ◽  
Tetsuo Sawaragi ◽  

Adaptation to environmental changes, such as wind, plays a very important role in improving the reliability of autonomous unmanned helicopters. Adaptive yaw (heading) control for an autonomous helicopter is discussed in this paper. The control structure is based on a hierarchal scheme that utilizes an inner yaw feedback control loop plus an outer feedback loop. The outer loop estimates the direction of the airspeed using roll angle and roll angular rate. Stable coupling in yaw and roll motion is induced by the proposed controller to improve the stability of the helicopter’s flight. Turning utilizing the proposed adaptive control system is discussed in particular. Results of flight experiments show that bifurcation of the helicopter’smaneuvering in turning occurs depending on airspeed. The results indicate that the autonomous unmanned helicopter can select a turning maneuver that is suitable for the environmental conditions, thus stabilizing its flight.


2004 ◽  
pp. 4-34 ◽  
Author(s):  
E. Yasin ◽  
A. Yakovlev

Having analyzed the present state of the Russian economy the authors come to the conclusion that the only reasonable goal of its modernization is achieving high competitive capacity of production. External and internal competitive capacity is analysed in detail basing on broad statistics as well as competitive capacity of institutions and their changes, the adaptive model of transition economy. According to the authors implementation of competitive capacity policy as a national idea should take into account long-term perspective.


2009 ◽  
Vol 129 (2) ◽  
pp. 315-323
Author(s):  
Kazuo Suzuki ◽  
Naoki Hoshino ◽  
Noboru Inomata ◽  
Hiroshi Kimura ◽  
Tamiya Fujiwara

2016 ◽  
Vol 9 (5) ◽  
pp. 324 ◽  
Author(s):  
Zain Retas ◽  
Lokman Abdullah ◽  
Syed Najib Syed Salim ◽  
Zamberi Jamaludin ◽  
Nur Amira Anang

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