L1 Adaptive Controller for a Missile longitudinal Autopilot Design

2008 ◽  
Author(s):  
Jiang Wang ◽  
Chengyu Cao ◽  
Naira Hovakimyan ◽  
Richard Hindman ◽  
D. Brett Ridgely
Keyword(s):  
Adaptive Controller ◽  
L1 Adaptive Controller

L1 Adaptive Control for Aircraft Air Management System Pressure-Regulating Bleed Valve

2017 ◽  
Vol 139 (12) ◽  
Author(s):  
John Cooper ◽  
Chengyu Cao ◽  
Jiong Tang
Keyword(s):  
Management System ◽  
Control Valve ◽  
Pressure Control ◽  
Adaptive Controller ◽  
System Model ◽  
Flow Control Valve ◽  
L1 Adaptive Control ◽  
System Pressure ◽  
L1 Adaptive Controller ◽  
Linear Controllers

This paper presents an L1 adaptive controller for pressure control using an engine bleed valve in an aircraft air management system (AMS). The air management system is composed of two pressure-regulating bleed valves, a temperature control valve, a flow control valve, and a heat exchanger/precooler. Valve hysteresis due to backlash and dry friction is included in the system model. The nonlinearities involved in the system cause oscillations under linear controllers, which decrease component life. This paper is the unique in the consideration of these uncertainties for control design. This paper presents simulation results using the adaptive controller and compares them to those using a proportional–integral (PI) controller.

Magnetic Momentum Control of a Satellite Augmented with an L1 Adaptive Controller

2013 ◽  
Author(s):  
Helena Vogel ◽  
Walter Fichter ◽  
Ronald Choe ◽  
Enric Xargay ◽  
Naira Hovakimyan
Keyword(s):  
Adaptive Controller ◽  
L1 Adaptive Controller

Automatic Aircraft Cabin Pressurization Systems

2019 ◽  
pp. 20-25
Author(s):  
Z.S. Sukhov ◽  
G.A. Timofeev
Keyword(s):  
Control Systems ◽  
Pid Controller ◽  
Pressure Control ◽  
Adaptive Controller ◽  
Testing Environment ◽  
Fuzzy Pid Controller ◽  
New Methods ◽  
Automatic Pressure ◽  
L1 Adaptive Controller ◽  
The Cost

This article presents a review of pneumatic, electro-pneumatic and digital systems for automatic pressure control in an airtight cabin and lists the types of aircraft where such systems are installed. Advanced algorithms for controlling the pressure in an airtight cabin are analyzed and literature on this topic is surveyed. The work of a Russian author that describes optimal control based on Pontryagin’s maximum principle is examined. The works of foreign authors on fuzzy PID-controller, L1-adaptive controller and other methods of adaptive pressurization are analyzed and brief results of these works are presented. The performed analysis indicates the need to use new methods and approaches to the synthesis of automatic pressure control systems for various types of aircraft. One of the most promising solutions is the use of adaptive regulators. The relevance of developing a virtual testing environment to reduce the cost of full-scale testing is shown.

Performance Evaluation of an L1 Adaptive Controller for Wing-Body Rock Suppression

2012 ◽  
Vol 35 (6) ◽  
pp. 1702-1708 ◽  
Author(s):  
Elisa Capello ◽  
Giorgio Guglieri ◽  
Daniele Sartori
Keyword(s):  
Performance Evaluation ◽  
Adaptive Controller ◽  
L1 Adaptive Controller

L1 Adaptive Controller for Tailless Unstable Aircraft

2007 ◽  
Author(s):  
Vijay V. Patel ◽  
Chengyu Cao ◽  
Naira Hovakimyan ◽  
Kevin A. Wise ◽  
Eugene Lavretsky
Keyword(s):  
Adaptive Controller ◽  
L1 Adaptive Controller
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