On the stability and control of nonlinear systems via vector Lyapunov functions

Airframe/propulsion system interactions can strongly affect the stability and control of supersonic cruise aircraft. These interactions generate forces and moments similar in magnitude to those produced by the aerodynamic controls, and can cause significant changes in vehicle damping and static stability. This in turn can lead to large aircraft excursions or high pilot workload, or both. For optimum integration of an airframe and its jet propulsion system, these phenomena may have to be taken into account.

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Advanced Modelling of KF Implemented Flying Wing

International Journal of Engineering Sciences ◽

10.36224/ijes.110404 ◽

2019 ◽

Vol 11 (4) ◽

Author(s):

Widanalage Dakshina ◽

Thiwanka Fernando

Keyword(s):

Extreme Condition ◽

Flow Conditions ◽

Ongoing Research ◽

Stability And Control ◽

Advanced Phase ◽

Landing Gears ◽

Two Phases ◽

The Stability ◽

And Control ◽

Base Design

This research carries out the advanced phase in correlation with the previous published design of KF Implemented Flying Wing. At the primary stage the basic design was considered under omission of non-static components and turbulent conditions. At this stage the simulations have taken a step ahead with improved flow conditions and advanced modeling of the design. As per the design aspects the engines, pylons, landing gears and shape improvements were done with solid modeling. Due to the computational limitations this was divided in to two phases as cruising conditions with non-static components and further studies to be carried out in Takeoff and Landing conditions with extended landing gears. Under the stability and control conditions a separate research is being carried out in achieving the optimum capability. Propfan engine selected for extreme condition evaluations. The implementations were made without disrupting the base design which was presented in phase one basic simulation carried out prior to this. The simulation results deemed to be promising for the first stage as well as the effect of new components. The secondary target areas are to be carried out in further ongoing research as well

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Introduction

Stability and Control of Large-Scale Dynamical Systems ◽

10.23943/princeton/9780691153469.003.0001 ◽

2011 ◽

Author(s):

Wassim M. Haddad ◽

Sergey G. Nersesov

Keyword(s):

Dynamical Systems ◽

Finite Time ◽

Lyapunov Functions ◽

Large Scale ◽

Interconnected Systems ◽

Large Scale Systems ◽

Vector Lyapunov Functions ◽

Finite Time Stabilization ◽

And Control ◽

Interconnected Dynamical Systems

This book develops a general stability analysis and control design framework for nonlinear large-scale interconnected dynamical systems, with an emphasis on vector Lyapunov function methods and vector dissipativity theory. It examines large-scale continuous-time interconnected dynamical systems and describes thermodynamic modeling of large-scale interconnected systems, along with the use of vector Lyapunov functions to control large-scale dynamical systems. It also discusses finite-time stabilization of large-scale systems via control vector Lyapunov functions, coordination control for multiagent interconnected systems, large-scale impulsive dynamical systems, finite-time stabilization of large-scale impulsive dynamical systems, and hybrid decentralized maximum entropy control for large-scale systems. This chapter provides a brief introduction to large-scale interconnected dynamical systems as well as an overview of the book's structure.

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