This paper reports the non-stationary behavior of a roof drainage during experimental measurement in the climate simulator. Many buildings use a fully or partially flat roof where it is necessary to use the roof drain...
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A flatness-based approach for motion planning for a class of boundary controlled port-Hamiltonian systems with distributed parameters is presented. The goal is to achieve open-loop output tracking or finite-time trans...
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A flatness-based approach for motion planning for a class of boundary controlled port-Hamiltonian systems with distributed parameters is presented. The goal is to achieve open-loop output tracking or finite-time transitions between steady states or operating profiles. Introducing new (fictious) boundary conditions in terms of so-called flat outputs, the port-Hamiltonian system is reformulated as a Cauchy problem in the spatial domain. The parametrization of any system variable and input by the flat output is computed using two different solution approaches. By assigning a suitable desired trajectory for the flat output, the input parametrization yields the feed forward control law to solve the motion planning task. The presented theory is applied to the wave equation with spatially varying parameters and is evaluated by numerical calculations and simulations.
The article deals with the use of modern technologies that can improve the thermal comfort in buildings. The article describes the usage of thermal energy storage device based on the phase change material (PCM). The t...
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The parameter identification problem of cell population balance models in a yeast batch process is addressed. The model is described by a partial integro-differential equation coupled with a set of ordinary differenti...
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The parameter identification problem of cell population balance models in a yeast batch process is addressed. The model is described by a partial integro-differential equation coupled with a set of ordinary differential equations. Based on the solution equivalence of the mass balance model and the first moment of the cell population balance model, the identification process is carried out in two steps. The growth related parameters are identified by only taking mass balance based measurements into account. The growth parameters are then utilized to identify the parameters related to cell division in the cell population balance model by means of optimization. The results are verified with an R2 analysis.
作者：
Schulte, HorstGerland, Patrick
Department of Engineering I Electrical Engineering and Automation Wilhelminenhofstr. 75A 12459 Berlin Germany University of Kassel
Faculty of Mechanical Engineering Measurement and Control Moenchebergstr. 7 34125 Kassel Germany
Hydrostatic transmissions, also called hydrostatic gears, have been widely used in mobile working machines and off-road vehicles such as construction and agricultural machines. This kind of transmission offers importa...
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Direct torque control (DTC) is considered as the best alternative for permanent magnet synchronous (PMSM) drives. Classic switching-table based DTC has high torque and flux ripple due to the implementation of hysteres...
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ISBN:
(纸本)9781424452231
Direct torque control (DTC) is considered as the best alternative for permanent magnet synchronous (PMSM) drives. Classic switching-table based DTC has high torque and flux ripple due to the implementation of hysteresis control. Switching frequency can be made constant by replacing hysteresis control with space vector PWM (SVM) and requires mathematical modification on SVM input. Propotional+integral control and reference flux vector calculation (RFVC) is used to improve the torque response, flux and torque ripple. These scheme still utilizing similar torque and flux estimator as introduced in classic DTC. Propotional+integral control DTC performed better in term of torque step response whilst RFVC torque and flux ripple are the best among these three schemes.
The transparent building element filled with Phase change materials (PCMs) represent an innovative solution that can achieve thermal comfort in buildings lowering the cooling and heating demand. There are many differe...
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The paper explores the effect of blinds on the workplace illuminance. The blinds are used to reduce solar load from the sunshine and decrease energy consumption for cooling in the overheated room. With blinds reducing...
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In this article is presented validation of ANSYS Fluent with IEA BESTEST Task 34. Article stars with outlook to the topic, afterward are described steady-state cases used for validation. Thereafter is mentioned implem...
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Dynamic wireless charging (DWC) systems for electric vehicles are an important solution for electric vehicles to be used more commonly in the future. However, when the electric vehicle is moving and charging in the DW...
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