The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A novel adaptive neurofuzzy H-infinity control approach to feedback control and stabilization of the nonlinear dynamical model of bioreactors used in biofuels production is developed. The form and the parameters of the differential equations that constitute the dynamic model of the bioreactor are considered to be unknown, while there is only knowledge about the order of the system. The model of the...
In order to reduce the high cost of sampling circuits, simplify commutation procedure and improve the conversion efficiency of the indirect matrix converter (IMC), a zero current commutation model predictive control (ZCC-MPC) strategy with the input voltage observation is proposed in this paper. The input voltage observer is designed by using the model of the input LC filter, hence, three sampling...
Cooling systems consume around 40% of modern data centres' total energy consumption, thus reducing the energy waste in this sector will have positive environmental impact. There exist several cooling methods appropriate for particular conditions. Since environmental conditions, such as air temperature, change on seasonal bases, no single cooling method can be claimed to be the best. In contrast, data...
This paper deals with Wind Energy Conversion System (WECS) control equipped by Doubly-Fed Induction Generator (DFIG). Based on variable speed wind turbine and aerodynamic torque estimation, high order sliding mode controller is developed to improve the dynamic performances of WECS by producing the required electromagnetic torque generator. The desired DFIG torque is directly tracked using the proposed...
A novel Finite Element Controller Map (FECM) method for the speed control of a saturated induction motor (IM) drive is presented in this paper. The newly developed algorithm is based on approximate functions in finite elements, which are expressed according to the nodal values of output response of the IM drive. The map complexity depends on the nodes assigned within a discrete element. The proposed...
DC/AC microgrid is independent control grid form of integrate distributed energy systems with utility powers systems; will powerfully understand the value and profit of the distributed energy resources. In this paper, the AC/DC micro-grid mostly contains of six parts: a solar source (P V source), Wind source, a Boost converter, BESS, a Buck-Boost converter (bidirectional), and a bi-directional DC/AC...
Predictive torque control (PTC) gains a lot of interest lately. Although the flux-weighting factor is the only tuning parameter in PTC, its selection is not a trivial task. This paper proposes an improved multi-objective fuzzy decision based method to select the best compromise voltage vector. The salient feature of the proposed approach lies in its capability to avoid high torque ripple and the need...
This paper presents monitoring as a service for networked medical cyber-physical systems in the operating room based on the recent IEEE 11073 standards for interoperable medical device communication. Runtime Verification techniques are used to allow for a formal specification and verification. Based on the specification so called monitors are automatically synthesized. At runtime, the monitors observe...
In the world is about one billion of disabled people. About one third of these people are people with mobility or movements impairments. For most part of people, high precision prosthetic devices with neural control and feedback are very expensive. Almost all average price prosthetic devices have visual feedback system, which loads user vision. To solve these two problems decided develop prosthetic...
This paper presents the design and implementation of a robust drive train torque control for rotor inertia emulation in a dynamometer test bench application. The controller is part of a hardware-in-the-loop (HiL) framework for a 50 kW small test rig that enables a real-time interaction between test rig drive train and a rotor model. The control objective is to compensate undesired dynamics of the...
Aiming at the characteristics of Senegal type wind turbine, a new type of wind wheel with horizontal structure of wind turbine is studied combined with the characteristics of vertical axis wind turbine and horizontal axis wind turbine. The structure of turbine and the distribution of the surrounding flow field are studied by using ANSYS Workbench software. Simultaneously, for generators installed...
This paper investigates research, made on semantic information models for building automation systems. It analyzes what information domains are covered to provide context, the vocabulary provided to describe building automation devices and functions, and how these models are structured. The intention is to find out good practices and try to identify trends, commonalities, differences, and possible...
There is a disadvantage of the traditional SVPWM techniques of six-phase motors, it does not consider the synthesizing vector in harmonic subspace. This thesis proposes modified SVPWM techniques based on twelve vectors. The novel techniques are simulated in Matlab/Simulink system and simulation results are given. Finally the SVPWM techniques are realized in the practical platform.
In this paper, we propose a straightforward method to select the parameters of the PI controllers in Field Oriented Control (FOC) scheme for Permanent Magnet Synchronous Motor (PMSM) based on geometric model reduction and structured H∞-synthesis. The main contribution of this paper is that, by recognizing the essential linear system structure of PMSM model and using mature robust control method, the...
This paper presents a new approach for broken rotor bars detection in induction motors. When broken rotor bar occurs, the rotor resistance will increase. Furthermore, thermal effects of rotor resistance are considered to address practical aspects. Therefore, a suitable method to detect broken rotor bar is rotor resistance estimation. An applicable method in state estimation is Cubature Kalman Filter...
In this paper the mathematical model of six-phase induction motor is established. Then the phase-fault SVPWM algorithm is put forward, and the simulation model is built in MATLAB to verify the feasibility of the algorithm. The system simulation and experiment of phase-fault of the six-phase induction machine are performed.
In this paper, a method for minimizing the fuel consumption in a diesel generator set using a wound rotor synchronous generator (WRSG) is introduced. The proposed method uses direct monitoring of fuel flow rates and generator output to actively search for an optimal stator voltage. By weakening the field of the WRSG, the overall efficiency of the system is increased. Simulation models of the diesel...
In recent years, service robots have advanced toward having to the ability to move autonomously in an environment in which they co-exist with humans. Thus, the robots must engage in obstacle avoidance to arrive at their goal point. In our previous research, we developed the artificial potential based method that the robot to plans an effective path simulating pedestrian characteristics by gently changing...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.