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This paper investigates the sub-satellite attitude stabilization control of a tethered satellite system (TSS) during deployment stage. The dynamic model of sub-satellite motion is first established using Euler equations. During the tether deployment stage, the stability characteristics of attitude motion are analyzed with dissymmetric junction points between tether and sub-satellite. Then, a fractional-order...
The Autonomous Trajectory Planning and Adaptive Control (ATPAC) architecture is proposed in this paper to achieve UCAV autonomous navigation during strike mission with unknown threats. The ATPAC architecture is consisted of a navigation module and a flight control module. The navigation module is implemented by policy-gradient learning algorithm coupled with expectant direction search (EDS) strategy...
Reduction is essential in controller design for flexible aircraft, leading to model uncertainty and modeling error. It is difficult to ensure robust stability by conventional controller. In order to resolve that problem, a robust controller, which can not only control flexible aircraft attitude but can also restrain structure vibration quickly, is designed using H∞ mixed sensitivity control method...
The principle of TECS (total energy control system) control-law is applied to the control of lateral directional axis of aircraft, utilizing the combination of bias control and total energy decoupling. Rolling mode and yawing mode are decoupled, and the control system with zero steady-state error is established. One type of aerotransport is simulated with aforementioned method. Simulation results...
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