A new and highly efficient algorithm developed under MATLAB for calculating the optical spectra generated by non-resonant optical parametric fluorescence is presented. This algorithm, which allows quick simulation of ...
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A new and highly efficient algorithm developed under MATLAB for calculating the optical spectra generated by non-resonant optical parametric fluorescence is presented. This algorithm, which allows quick simulation of the spectra, is shown to be much more rapid than standard ones. The ways to modify the algorithm for other environments are discussed.
In the future, it may be possible to employ large numbers of autonomous marine vehicles to perform tedious and dangerous tasks, such as minesweeping. Hypothetically, groups of vehicles may leverage their numbers by co...
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ISBN:
(纸本)0780385438
In the future, it may be possible to employ large numbers of autonomous marine vehicles to perform tedious and dangerous tasks, such as minesweeping. Hypothetically, groups of vehicles may leverage their numbers by cooperating. A fundamental form of cooperation is to perform tasks while maintaining a geometric formation. The formation behavior can then enable other cooperative behaviors. In this paper, we describe a leader-follower formation-flying control algorithm. This algorithm can be applied to one-, two-, and three-dimensional formations, and contains a degree of built-in robustness. Simulations and experiments are described that characterize the performance of the formation control algorithm. The experiments utilized surface craft that were equipped with an acoustic navigation and communication system, representative of the technologies that constrain the operation of underwater autonomous vehicles. The simulations likewise included the discrete-time nature of the communication and navigation.
Steam parameters control problem in power plants with coal fired boilers is one of the most challenging problems. The steam parameters are extreme at the boiler outlet. The large time constants and nonlinearities are ...
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ISBN:
(纸本)0780383354
Steam parameters control problem in power plants with coal fired boilers is one of the most challenging problems. The steam parameters are extreme at the boiler outlet. The large time constants and nonlinearities are involved in the process model. In this paper, it was shown that the feedback linearization method can be applied to synthesise control system for this process. The derivation of the linearizing transformation is not an easy task. It requires symbolic solutions for ordinary differential equations. The proposed method was compared with PI and proportional state feedback control algorithms. Simulation experiments were carried out in different points of operation, with different heat distribution and in presence of unmodelled dynamics.
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