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Trajectory tracking control of a stratospheric satellite is investigated in this paper. A simplified dynamical model for the stratospheric satellite is established based on the Lagrange equation to design its longitudinal trajectory tracking controller. From the model it is proved that the tracking problem cannot be solved by direct input-output feedback linearization control strategy, so the stratospheric...
In this paper, the flight motion model for near-space vehicle with an oblique wing is presented, and the flight control system is developed using dynamic inversion method. Firstly, based on its asymmetry configuration and special aerodynamic characteristic, the six-degree-of-freedom nonlinear equations of flight motion are derived using Newton's second law and law of inertia via considering the influence...
The ducted fan UAV was simply introduced in this paper. The dynamics characteristic was also analysed. The dynamics scalar equation of mass centre motion and surround mass centre motion of aircraft were built. The lift, drag, yawing force and pitch, drift, roll moment of UAV were analyzed through FLUENT simulation software. Simulation image with good effect was got. The dynamics characteristic of...
In this paper we report on combination control strategy with a state-dependent Riccati equation (SDRE) and Taylor series approximations nonlinear predictive control model of a powered parafoil for autonomous agile maneuvering parafoil. NMPC is an optimization based framework for learning a stabilizing control sequence that minimizes a specified cost function. The combinated controller providing an...
This paper considers modeling and simulation study of a helicopter with an under-slung external load system. Mathematical models of a single main rotor helicopter and an under-slung load are presented in this paper. Considering the two models, a mathematical model for a helicopter carrying an under-slung load is obtained. The combined system model can be used for stability analysis and controller...
More and more researchers draw attention on Robot fish and obtain considerable achievement. This paper focused on the dynamics of Robot fish's foil and established the locomotion modeling of Robot fish. This paper also investigated the relationship between the speed of Robot fish and the fish body parameter which concluded the frequency, body's wave number and amplitude of foil through simulating...
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