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Time minimization for vehicles passing a given trajectory
Suja, Jerguš ; Mauder, Tomáš (oponent) ; Porteš, Petr (vedoucí práce)
The diploma thesis deals with vehicle movement dynamics and defining a theoretical model for software simulation of vehicle passing a given trajectory, while main aim is time minimization driving mode. Simulation (algorithm for computing speed profile) is then applicated for passing experimental vehicle along Masaryk circuit in Brno. At the end, we optimize chosen vehicle parameters with derivate-free algorithms Multilevel Coordinate Search and Particle Swarm.
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Construction of the Optimal Control Strategy for an Electric-Powered Train
Pokorný, Pavel ; Šeda, Miloš (oponent) ; Kuben, Jaromír (oponent) ; Čermák, Jan (vedoucí práce)
This thesis deals with the description of the nature of optimal driving strategy for an electric-powered train as well as the calculation of switching times of optimal driving regimes for standard types of resistance function. We apply the Pontryagin principle and related tools of optimal control theory to develop the optimal driving strategy and to derive equations for computation of switching times and the corresponding speed profiles. Besides the basic form of the energy efficient train control problem we consider also its modifications including the global speed constraint, track gradient as well as time-energy efficient train control. Moreover, we analyse also the solution with use of the theory of nonlinear parametric programming. The emphasize is put on exact forms of solutions with a minimal use of numerical methods.
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Time minimization for vehicles passing a given trajectory
Suja, Jerguš ; Mauder, Tomáš (oponent) ; Porteš, Petr (vedoucí práce)
The diploma thesis deals with vehicle movement dynamics and defining a theoretical model for software simulation of vehicle passing a given trajectory, while main aim is time minimization driving mode. Simulation (algorithm for computing speed profile) is then applicated for passing experimental vehicle along Masaryk circuit in Brno. At the end, we optimize chosen vehicle parameters with derivate-free algorithms Multilevel Coordinate Search and Particle Swarm.
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A Method For Correcting A Damaged Tacho Signal
Čala, Martin
Order analysis of vibration signals from rotary machinery typically uses tacho sensors utilizing either optical or magnetic principle for precise measurement of shaft angle position that can be calculated to the rotational speed. In some cases, the tacho signal can be distorted in numerous ways, for example, the presence of additional corrupting edges that show up as strong damage to the speed profile. This paper introduces an automatic algorithmic technique to remove corrupting edges from the tacho signal via a criterion-based approach called. The properties of the method are demonstrated on a simple theoretical example as well as on a real signal from a turbojet run-up that exhibits superior functionality even during rapid speed changes; such variations are typically problematic. The procedure also preserves a number of correct edges even when the corrupting edge is very close to the correct one.
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Construction of the Optimal Control Strategy for an Electric-Powered Train
Pokorný, Pavel ; Šeda, Miloš (oponent) ; Kuben, Jaromír (oponent) ; Čermák, Jan (vedoucí práce)
This thesis deals with the description of the nature of optimal driving strategy for an electric-powered train as well as the calculation of switching times of optimal driving regimes for standard types of resistance function. We apply the Pontryagin principle and related tools of optimal control theory to develop the optimal driving strategy and to derive equations for computation of switching times and the corresponding speed profiles. Besides the basic form of the energy efficient train control problem we consider also its modifications including the global speed constraint, track gradient as well as time-energy efficient train control. Moreover, we analyse also the solution with use of the theory of nonlinear parametric programming. The emphasize is put on exact forms of solutions with a minimal use of numerical methods.
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Influence diagrams for speed profile optimization" computational issues
Vomlel, Jiří ; Kratochvíl, Václav
Influence diagrams were applied to diverse decision problems. However, the general theory is still not sufficiently developed if the variables are continuous or hybrid and the utility functions are nonlinear. In this paper, we study computational problems related to the application of influence diagrams to vehicle speed profile optimization and suggest an approximation of the nonlinear utility functions by piecewise linear functions.
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