Control law synthesis for an airplane with relaxed static stability
| Autor: | J. D. Blight, D. Gangsaas, T. M. Richardson |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Engineering
business.industry Applied Mathematics Airspeed Longitudinal static stability Aerospace Engineering Linear-quadratic-Gaussian control True airspeed Acceleration Flight envelope Space and Planetary Science Control and Systems Engineering Control theory Law Dynamic pressure Electrical and Electronic Engineering Phugoid business |
| Zdroj: | Journal of Guidance, Control, and Dynamics. 9:546-554 |
| ISSN: | 1533-3884 0731-5090 |
| DOI: | 10.2514/3.20145 |
| Popis: | The synthesis of a command and stability augmentation control law for a transport airplane is presented. To improve fuel efficiency, the airplane has a relatively small horizontal tail surface and therfore has unsatisfactory inherent longitudinal stability. Over a wide range of center-of-gra vity locations and the full flight envelope, the control law furnishes 1) task tailored column force gradients; 2) excellent dynamic responses for normal acceleration, pitch rate, and speed; and 3) better than f =0.5 damping for the phugoid and short period modes. The control law is based on linear quadratic Gaussian synthesis at a single operating point. The gains are scheduled as functions of dynamic pressure and airplane flap position. The control is the elevator command and the sensors are column force, normal acceleration, pitch rate, airspeed, longitudinal acceleration, and vertical speed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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