This paper presents an adaptive nonlinear controller for diving control of an autonomous underwater vehicle (AUV). So far, diving dynamics of an AUV has often been derived under various assumptions on the motion of the vehicle. Typically, the pitch angle of AUV has been assumed to be small in the diving plane. However, these kinds of assumptions may induce large modeling errors and further may ...

Abstract The configuration, local motions, and related physics processes of the terrestrial magnetotail have been well studied, playing a key role in dynamics. But characteristics electron pitch-angle distribution (PAD), formation mechanisms, at different regions flapping were not pointed out. Here, we study current sheet crossing event detected by Magnetospheric Multiscale Mission inside magne...

In this paper, a comparative assessment is made based on time domain specifications and erro r criteria between various types of controllers like conventional PID, and heuristic approaches like FA, P SO and BFO based PID and I-PD structured controllers. The dynamic modelling of pitch control system i s considered on the design of an auto pilot that controls the pitch angle. To study the effecti...

a detailed model of wind power station, including double fed induction generator, dfig is presented in this paper. two control mechanisms are included in the model. the inner control system uses stator flux oriented control for the rotor side converter and grid voltage vector control for the grid side converter. the outer control system is used for wind turbine pitch angle. pscad/emtdc is used ...

Global crisis in financial, energy, together with climate and enviromental, has motivated word community to seek for alternative energy resourses, known as the new and renewable energy source to replace conventional widely used fossil energy. Wind energy, regarded as potential candidate of the clean alternative source that may help to solve the crisis. The development of the world’s wind turbin...