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Wireless Sensor Network (WSN) is an emerging technology which has been employed recently in various applications such as healthcare systems, environmental monitoring, military and industrial applications. This is due to the easy deployment and (re)configuration of the sensor nodes in the environment. It also has the potential of being integrated into the distributed manufacturing systems particularly...
In this paper, automatic separation of hybrid system models for industrial automation systems is considered. The proposed method facilitates efficient separation of systemlevel models into component-level models. Such component-level models allow for model-based diagnosis, since a close relation exists between anomalies on a component-level and fault causes. The approach is based on the concept of...
In this paper, a new online vision-based road-type classification method is proposed. The method uses video captured by a single video camera and takes into account the visual information of the whole scene by segmenting the video frames into temporally consistent frame segments. To this end, we use a video segmentation algorithm based on evolving Gaussian mixture models (GMMs). Our method consists...
The storage system in a concentrated solar plant is considered as an important concern to increase the capacity factor of the plant by producing power during the night or in cloudy days. This paper presents the analysis of a thermocline system, which consists of a single tank that typically works with molten salt and quartzite rock as storage media. A simulation model of heat charging and discharging...
This paper proposes a low voltage ride through (LVRT) scheme for the permanent magnet synchronous generator (PMSG) variable speed wind energy conversion system (WECS) at the grid faults to follow the requirements defined by the grid codes. The dc-link voltage is controlled by the machine-side converter instead of the grid-side converter. Taking into consideration the nonlinear relationship between...
Power converters have been widely used in industrial applications as parallel and series compensators, UPQCs, and STATCOMs. These electronic devices can also be utilized on weak-grid or micro-grid systems, where both the supply voltage amplitude and frequency, may vary considerably from the nominal values. Micro-grid and weak-grid systems are commonly associated to distribute non-conventional power...
Due to the complex and nonlinear nature of electric railway supply system the system is a good candidate for the resonance occurrence. Resonance can boost some voltage or current harmonic components and may cause damage to the network equipment. Therefore resonance assessment and finding the resonance frequencies in the electrified railway system is important. In order to evaluate frequency response...
This paper presents the scalar dynamic magnetic hysteresis model based on the Preisach theory. The important role in this theory played hysteresis operator states. The changes of these operators' states are not immediate in the dynamic model but they are a function of time and parameter k representing the magnetic properties of the material. In this paper the transient state of the hysteresis operator...
In the development of electrified and other vehicle systems, the modelling and simulation of the vehicle is very important. With these tools the preliminary design, as well as later detailed studies of the systems developed, allow engineers to spend less time on each phase of their projects or address them with an integrated approach. In addition, this integrated approach provides the pos sibility...
DC-DC converters are used to interconnect solar photovoltaic (PV) to a dc microgrid or to a battery. Capacitors are connected at the output of a PV terminal to minimize power pulsation. Operational life of capacitor decreases due to various electrical and environmental parameters. In this paper, a method for condition monitoring of the capacitors used in PV system is proposed. The technique combines...
The reluctance torque of an IPM motor can be effectively utilized by applying the maximum torque per ampere (MTPA) control algorithm, which improves the efficiency and the power density of the motor. However, the motor is unable to operate accurately on the MTPA curve due to the parameter mismatch caused by magnetic saturation and/or temperature variation. This paper proposes the d-axis inductance,...
Two configurable and programmable ASICs that implement piecewise-affine (PWA) functions have been designed in TSMC 90-nm technology in response to industry demands for embedded, fast response time, and low power solutions for Model Predictive Control (MPC). An automated model-based design flow can extract the parameters necessary for the configuration and the programming of both ASICs. Two application...
Wind turbines require periodic maintenance procedures to ensure reliable operation of the system. Regular servicing of the rotor demands calibration of the speed and position sensor in aggravated circumstances of the dynamic wind. This sensor is one of the most critical components for the drive reliability and the calibration greatly increases the time of repair. The main focus of the paper is to...
This paper addresses the optimization of energy flows between electric drives in conveying systems. Thereby, load peaks and the feedback of electric energy into the grid are reduced. The approach is based on the solution of a mixed integer quadratic optimization problem which incorporates models for energy flows and energy consumption of the electric drives. Models for energy flows and energy consumption...
An electro-thermal model of a Rogowski Coil sensor system is here described. A co-design methodology between VHDL-AMS and Finite Element Analysis (FEA) has been used for modeling the entire system. The proposed modeling strategy uses geometrical FEA to complete a time-dependent parametrical heat transfer model, which can be implemented in VHDL-AMS or in any other similar hardware description language...
Nowadays advanced software programs are actively used in the field for simulation and modeling. LabVIEW and MATLAB/Simulink are both graphical programming languages, allowing a more efficient method to perform and analyze control systems. Therefore, they are the most commonly used software programs for these purposes. Moreover; in some applications — like hardware in the loop systems, flight simulations...
The objective of this paper is to compare the robustness performance of continuous time periodic controller with conventional non-linear sliding mode controller (SMC) for a highly non-linear system cart-inverted pendulum. The goal is to determine which control strategy delivers better performance to pendulum's angle and cart's position. It is observed that although both the controllers are capable...
Trends in the automotive control systems are toward more comprehensive and electronic control. The objective of this paper is to study the effectiveness of Internal Model Control PID (IMC-PID) method to develop a traction control system based on engine torque control for an automobile. A plant model is developed based on the governing equations and implemented in MATLAB. This is then captured in a...
In this paper, an Adaptive PID with dynamic sliding mode control technique is proposed to control the speed of a separately excited DC motor. Speed control is done using Sliding mode control (SMC) and Dynamic sliding mode control techniques and to overcome their drawbacks the new controller is designed. The performance of the designed controller is evaluated via MATLAB simulations using linear model...
This paper deals with the experimental identifications of a decentralized control system for a web processing and transfer, where the velocity and tension are controlled at each corresponding subsystem. To satisfy the identifiability of closed-loop identification, we employed the output over-sampling method. The overlapping decentralized decomposition is effective because the identification can be...
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