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| Constraint control of longitudinal motion for unmanned airship based on adaptive Backstepping |
| 1.Key Laboratory of OpticalElectrics Control Technology, Luoyang, Henan 471009, China; 2.College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China) |
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Abstract To solve the difficult control of longitudinal motion with disturbance for unmanned airship, a robust constrained flight control strategy based on adaptive Backstepping method was proposed. The parameter adaptation technology was adopted to effectively tackle the external timevarying disturbance of the airship. When the flight control was designed, the effect of the dissymmetrical saturation input constraints was considered. An auxiliary analysis system was introduced to analyze the constraint effect. Combined the auxiliary analysis system with Backstepping method, an adaptive constraint flight control strategy was designed. The results show that the improved constrained flight control can effectively tackle the external timevarying disturbance and the saturation input constraint of unmanned airship. The desired height can be quickly obtained to track the reference signal of the pitching angle. The proposed constrained flight control is an effective control scheme for unmanned airship.
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2011, Vol. 32 
