Gain Scheduled Automatic Flight Control Systems Design for a Light Commercial Helicopter Model
نویسندگان
چکیده
In this paper, nonlinear rigid body dynamics for rotorcraft mathematical model is studied. A linearization of helicopter flight dynamics is evaluated. Automatic Flight Control System (AFCS) with gain scheduled LQ optimal control is designed based on look-up tables. Stability analyses are performed and results are illustrated graphically for open and closed-loop systems. As seen from results, LQ optimal control system pushes eigenvalues to left side of imaginary axis without excessive control inputs to maintain stability of naturally unstable rotorcraft dynamics. Proposed AFCS is tested by nonlinear flight dynamics model in MatlabSimulink environment. Simulation results illustrate effectiveness of evaluated method and techniques. Key-Words: helicopter, flight dynamics, nonlinear model, simulation,
منابع مشابه
Robust Fuzzy Gain-Scheduled Control of the 3-Phase IPMSM
This article presents a fuzzy robust Mixed - Sensitivity Gain - Scheduled H controller based on the Loop -Shaping methodology for a class of MIMO uncertain nonlinear Time - Varying systems. In order to design this controller, the nonlinear parameter - dependent plant is first modeled as a set of linear subsystems by Takagi and Sugeno’s (T - S) fuzzy approach. Both Loop - Shaping methodology and...
متن کاملRobust H2 switching gain-scheduled controller design for switched uncertain LPV systems
In this article, a new approach is proposed to design robust switching gain-scheduled dynamic output feedback control for switched uncertain continuous-time linear parameter varying (LPV) systems. The proposed robust switching gain-scheduled controllers are robustly designed so that the stability and H2-gain performance of the switched closed-loop uncertain LPV system can be guaranteed even und...
متن کاملAn Affine Parameter Dependent Controller of an Helicopter for Various Forward Velocity Conditions
In this paper, we address the design of a controller that accomplishes stabilization and reference tracking at various flight conditions by using linear helicopter models. The suggested controller is in the form of an H-infinity gain-scheduler, and is used for stabilization and reference tracking for the 4 axis (heave, pitch, roll and yaw) autopilot. Based on the linear models given for the Pum...
متن کاملGain-Scheduled Higher Harmonic Control for Full Flight Envelope Vibration Reduction
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. ABSTRACT This paper investigates the dynamics of the SMART rotor, and presents a method to design a gain-scheduled controller to reduce the harmonic vibration throughout the flight envelope. The dynamics of the SMART rotor was examined at various flight conditions through nonli...
متن کاملStability Proof of Gain-Scheduling Controller for Skid-to-Turn Missile Using Kharitonov Theorem
Gain scheduling is one of the most popular nonlinear control design approaches which has been widely and successfully applied in fields ranging from aerospace to process control. Despite the wide application of gain scheduling controllers, there is a notable lack of analysis on the stability of these controllers. The most common application of these kinds of controllers is in the field of fligh...
متن کامل