Helicopter flight control compensator design

2017 ◽  
Author(s):  
Malika Yaici ◽  
Kamel Hariche ◽  
Tim Clarke
Keyword(s):  
Flight Control ◽  
Helicopter Flight ◽  
Compensator Design

Machine vision-based sensing for helicopter flight control

Robotica ◽  
2000 ◽  
Vol 18 (3) ◽  
pp. 299-303 ◽  
Author(s):  
Carl-Henrik Oertel
Keyword(s):  
Machine Vision ◽  
Measurement System ◽  
Flight Control ◽  
A Priori ◽  
Image Data ◽  
Two Dimensional ◽  
Position Measurement ◽  
Additional Information ◽  
Helicopter Flight ◽  
Template Tracking

Machine vision-based sensing enables automatic hover stabilization of helicopters. The evaluation of image data, which is produced by a camera looking straight to the ground, results in a drift free autonomous on-board position measurement system. No additional information about the appearance of the scenery seen by the camera (e.g. landmarks) is needed. The technique being applied is a combination of the 4D-approach with two dimensional template tracking of a priori unknown features.

scholarly journals A Novel Comprehensive Kinematic and Inverse Dynamic Model for the Flybar-Less Swashplate Mechanism: Application on a Small-Scale Unmanned Helicopter

Symmetry ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1849
Author(s):  
Jianbo Liu ◽  
Rongqiang Guan ◽  
Yongming Yao ◽  
Hui Wang ◽  
Linqiang Hu
Keyword(s):  
Dynamic Model ◽  
Flight Control ◽  
Virtual Work ◽  
Influence Factors ◽  
Parallel Manipulators ◽  
Small Scale ◽  
Unmanned Helicopter ◽  
Inverse Dynamic ◽  
Inverse Dynamic Model ◽  
Helicopter Flight

In this paper, we propose a novel kinematic and inverse dynamic model for the flybar-less (FBL) swashplate mechanism of a small-scale unmanned helicopter. The swashplate mechanism is an essential configuration of helicopter flight control systems. It is a complex, multi-loop chain mechanism that controls the main rotor. In recent years, the demand for compact swashplate designs has increased owing to the development of small-scale helicopters. The swashplate mechanism proposed in this paper is the latest architectures used for hingeless rotors without a Bell-Hiller mixer. Firstly, the kinematic analysis is derived from the parallel manipulators concepts. Then, based on the principle of virtual work, a methodology for deriving a closed-form dynamic equation of the FBL swashplate mechanism is developed. Finally, the correctness and efficiency of the presented analytical model are demonstrated by numerical examples and the influence factors of the loads acted on actuators are discussed.

Influence of high-order dynamics on helicopter flight-control systembandwidth

1986 ◽  
Vol 9 (2) ◽  
pp. 190-197 ◽  
Author(s):  
Robert T. N. Chen ◽  
William S. Hindson
Keyword(s):  
Flight Control ◽  
High Order ◽  
Helicopter Flight

Helicopter flight control using individual channel design

1995 ◽  
Vol 142 (1) ◽  
pp. 58-72 ◽  
Author(s):  
J. Liceaga-Castro ◽  
J. O'Reilly ◽  
W.E. Leithead ◽  
C. Verde
Keyword(s):  
Flight Control ◽  
Channel Design ◽  
Helicopter Flight

The Modeling and Simulation of Hydraulic Actuated Control System of Helicopter in Volumetric Speed Control

2015 ◽  
Vol 779 ◽  
pp. 169-174
Author(s):  
Feng Gu ◽  
Ji Hai Jiang ◽  
Fei Meng Diao ◽  
Quan Du ◽  
Lei Gao ◽  
...  
Keyword(s):  
Control System ◽  
Flight Control ◽  
Speed Control ◽  
Performance Curve ◽  
Generation System ◽  
Helicopter Control ◽  
Modeling Simulation ◽  
Helicopter Flight ◽  
Speed Control System ◽  
Wheel Brake

Hydraulic generation system on helicopter generally consists of flight control hydraulic actuating circuit, landing gear retraction/extension hydraulic circuit, and wheel brake circuit. This paper studies on a volumetric speed control system applied in helicopter flight control actuating system. The system performance curve, deduced from the modeling, simulation and testing of the tail-actuating system, reveals that this volumetric speed control system meets the requirements of helicopter control system actuating.

scholarly journals Survey on Flight Control Technology for Large-Scale Helicopter

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Jinshuo Hu ◽  
Hongbin Gu
Keyword(s):  
Flight Control ◽  
Large Scale ◽  
Control Technology ◽  
Flight Control System ◽  
Future Directions ◽  
Research Issues ◽  
Advantages And Disadvantages ◽  
Helicopter Flight ◽  
Challenging Research ◽  
Theoretical Developments

A literature review of flight control technology is presented for large-scale helicopter. Challenges of large-scale helicopter flight control system (FCS) design are illustrated. Following this, various flight control methodologies are described with respect to their engineering implementation and theoretical developments, whose advantages and disadvantages are also analyzed. Then, the challenging research issues on flight control technology are identified, and future directions are highlighted.

AN APPROACH TO LINGUISTIC INSTRUCTION BASED LEARNING

1993 ◽  
Vol 01 (01) ◽  
pp. 19-56 ◽  
Author(s):  
MICHIO SUGENO ◽  
GYEI-KARK PARK
Keyword(s):  
Control Problem ◽  
Learning Process ◽  
Flight Control ◽  
Fuzzy Theory ◽  
Human Learning ◽  
Fuzzy Evaluation ◽  
Helicopter Flight ◽  
Language Environment ◽  
The Given ◽  
Fuzzy Learning

In this paper, we notice the fact that a human learning process is characterized by a process under a natural language environment, and discuss an approach of learning based on indirect linguistic instructions. An instruction is interpreted through some meaning elements and each trend. Fuzzy evaluation rules are constructed for the searched meaning elements of the given instruction, and the performance of a system to be learned is improved by the evaluation rules. In this paper, we propose a framework of learning based on indirect linguistic instruction based learning using fuzzy theory: FULLINS(FUzzy-Learning based on Linguistic INStruction). The validity of FULLINS is shown by applying it to two control examples: truck backer-upper control and helicopter flight control problem.

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