Automatic landing control using H/sub ∞/ control and stable inversion

2003 ◽  
Author(s):  
Jun Che ◽  
Degang Chen
Keyword(s):  
Stable Inversion ◽  
Automatic Landing ◽  
Landing Control

scholarly journals Combining Stable Inversion and H∞ Synthesis for Trajectory Tracking and Disturbance Rejection Control of Civil Aircraft Autolanding

2020 ◽  
Vol 10 (4) ◽  
pp. 1224 ◽  
Author(s):  
Xudong Wang ◽  
Yuanjun Sang ◽  
Guangrui Zhou
Keyword(s):  
Trajectory Tracking ◽  
Dynamic Models ◽  
Wind Condition ◽  
Stable Inversion ◽  
Disturbance Rejection Control ◽  
Automatic Landing ◽  
Civil Aircraft ◽  
Trajectory Tracking Controller ◽  
Large Wind ◽  
Landing Control

The landing phase during a flight probably is the most dangerous part, as most of the accidents occur in this phase. A robust trajectory tracking controller is presented to autoland a civil aircraft subjected to severe wind disturbances to improve the aircraft’s safety. Firstly, the dynamic models of the aircraft and windshear are built. Secondly, a stable inversion (SI) based robust autolanding controller (SIRAC) is proposed. In this architecture, the SI algorithm is used to improve the output tracking precision, while the H ∞ synthesis is applied for enhancing robust stability against uncertainties caused by wind disturbances. Finally, two scenario simulations are carried out for the automatic landing control of a large civil aircraft. Significant performances on the system have been achieved without any disturbance. In addition to that, the proposed SIRAC can also track the desired autolanding trajectory with high precision, even under large wind condition.

CAT III Autoland Control Laws Design Based on Multi-Objective Optimization

2012 ◽  
Vol 452-453 ◽  
pp. 548-552 ◽  
Author(s):  
Hui Jie Li ◽  
Ling Yu Yang ◽  
Gong Zhang Shen
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Multi Objective Optimization ◽  
Control Laws ◽  
Multi Objective ◽  
Automatic Landing ◽  
Simulation Results ◽  
Free Parameters ◽  
Structure Measurement ◽  
Landing Control

The CAT III longitudinal automatic landing control laws based on multi-objective optimization is discussed. Firstly summarized the CAT III airworthiness criteria and transformed into the specifications of control system. The configuration of the longitudinal automatic landing controllers is proposed secondly and multi-objective optimization is used to tradeoff free parameters of the controllers. The Monte Carlo simulation results show the designed control laws fulfill the CAT III requirements, when there are uncertainties of structure, measurement error and disturbances.

Wind Shear Encountered Landing Control Based on CMACs

2013 ◽  
Vol 284-287 ◽  
pp. 2351-2355 ◽  
Author(s):  
Jih Gau Juang ◽  
Chung Ju Cheng ◽  
Teng Chieh Yang
Keyword(s):  
Intelligent Control ◽  
Adaptive Learning ◽  
Wind Shear ◽  
Learning Rule ◽  
Lyapunov Theory ◽  
Intelligent Control System ◽  
Automatic Landing ◽  
Control Scheme ◽  
Shear Condition ◽  
Landing Control

This paper presents an intelligent control scheme that uses different cerebellar model articulation controllers (CMACs) in aircraft automatic landing control. The proposed intelligent control system can act as an experienced pilot and guide the aircraft landed safely in wind shear condition. Lyapunov theory is applied to obtain adaptive learning rule and stability analysis is also provided. Furthermore, the proposed controllers are implemented in a DSP. The simulations by MatLab are demonstrated.

Automatic Landing Control of a Very Flexible Flying Wing

2018 ◽  
Author(s):  
Pengyuan Qi ◽  
Xiaowei Zhao ◽  
Yinan Wang ◽  
Rafael Palacios ◽  
Andrew Wynn
Keyword(s):  
Automatic Landing ◽  
Landing Control

EFFECTIVE FINITE HORIZON LINEAR-QUADRATIC CONTINUOUS TERMINAL CONTROL

2013 ◽  
Vol 10 (06) ◽  
pp. 1350038 ◽  
Author(s):  
X. XIA ◽  
Z. XU
Keyword(s):  
Matrix Method ◽  
Optimization Problem ◽  
Computation Time ◽  
Finite Horizon ◽  
Terminal Control ◽  
Linear Quadratic ◽  
Sweep Method ◽  
Crucial Point ◽  
Automatic Landing ◽  
Landing Control

An effective algorithm for the finite-horizon linear quadratic continuous terminal control is proposed. It is the combination of existing continuous soft and hard terminal control. We apply the algorithm to the automatic landing control of OH-6A helicopters. Numerical demonstration shows that, whether noise exists or not, the algorithm has less computation time and less feedback gains than existing hard terminal control while generally achieving the same terminal accuracy. The optimization problem which represents the hard terminal control can be addressed by sweep method and transit matrix method. It is also discovered that transit matrix method is a crucial point for improving terminal accuracy.

Sign in / Sign up

Export Citation Format

Share Document