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This paper presents a strategy of designing a trajectory-tracking control law for unmanned aerial vehicles where an unmodifiable autopilot is incorporated in the closed-loop system. The main contributions of this paper include a novel control structure that enables an explicit design of tracking methods for a system with an unmodifiable autopilot in the loop, and a novel controller that augments the...
Oblique cross quadrotors vehicle is a variant of quadrotors, which is more suitable for take photos in the air compared to the conventional cross-shaped quadrotors and the rotary-wing state of Quad Tilt Rotor(QTR) have to take this flight mode. A lot of research work have done about the conventional cross-shaped quadrotors but little about oblique cross quadrotors vehicle. The mathematics model of...
To simplify the modeling process and to increase accuracy and stability of CVT ratio control system, CVT transmission structure and ratio changing theory were analyzed. The mathematical model every part of control system was built. Engine simulation model and CVT object ratio simulation model based on the engine optimal-economy and the optimal-power work mode were built. CVT-vehicle model according...
In order to improve vehicle riding comfort and handling stability, a PID control system was designed. Regarding electronically controlled air suspension of a coach as the research subject, the PID control theory is applied to vehicle air spring suspension system. The PID control system is built up in Matlab/Simulink based on the a-quarter-vehicle model for simulating. The RMS of the vertical vibration...
Buoyant vehicle concept provides the attractive solution to the many adverse problems. Basic objective is to operate the vehicle with a sufficient level of autonomy under extreme range of atmospheric conditions. In order to achieve these goals, a guidance and control system is needed which controls the airship attitude in the air. The accurate control system first requires an accurate model of the...
This paper introduces a generic dynamic programming function for Matlab. This function solves discrete-time optimal-control problems using Bellman's dynamic programming algorithm. The function is implemented such that the user only needs to provide the objective function and the model equations. The function includes several options for solving optimal-control problems. The model equations can include...
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