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Otitis media with effusion (OME), a worldwide common ear disease, affecting adults and children when the middle ear is infected. Grommet insertion treatment leads to the development and design of a medical device allowing fast and automatic grommet insertion in an earlier work. In the medical device design, a precision motion system is used to provide the accurate movements for the precise grommet...
FPGAs have evolved from hardware accelerators to very powerful System-on-Chip platforms, mainly thanks to the availability of increasingly powerful embedded processors. The efficient integration of embedded processors with the FPGA fabric requires fast exchange of information between both sides, not to compromise the performance improvement these architectures should provide. Therefore, detailed performance...
This paper presents a real-time diagnostic algorithm for IGBT open-circuit faults in Neutral-Point-Clamped converters, generalized for the N-level case. This algorithm can thus be used in any NPC converter without adaptations, regardless of the number of levels. The algorithm is based on the estimated instant pole voltage error and requires no additional sensors, relying only on signals already available...
Electroporation phenomenon is the basis for a number of biomedical techniques. High level electroporation, in the irreversible form, has been clinically demonstrated for treatment of solid tumors. There are few experimental available systems capable of generating at the same time the required pulse shaping, power, voltage and output impedance characteristic. In contrast power pulse generators have...
In the field of the manufacturing industry, it has been often discussed that high-mix low-volume manufacturing is required to meet a variety of customer needs. In such a situation, cellular manufacturing and U shaped production lines are often adopted. Linear synchronous motors (LSMs) are appropriate to realize U shaped automation lines because of its strong features such as flexibility of layout,...
Perfectly balanced supply voltages are not possible in practice. Therefore, detection, discrimination and diagnosis of stator winding turn fault in the presence of unbalanced supply voltages for three-phase induction motors is needed. In this paper a novel approach is presented for stator winding turn incipient faults detection in the presence of different levels of voltage unbalance and at different...
A variable structure flatness based controller achieving both stabilization and energy management in a DC grid is proposed in this paper. The grid connects through undamped LC filters, a voltage source, a storage device and a reversible load. It is shown that the energy management goals along with the reversibility of the load make the grid to behave as a variable structure system and that a fixed...
A novel current control strategy for Brushless DC machines (BLDCs) is presented in this paper. It aims to increase BLDC exploitation compared to conventional current commutation (two-phase-on) and three-phase-on control approaches. The proposed current control strategy consists in injecting a suitable zero-sequence current in order to exploit the BLDC zero-sequence back-emfs. Thus, increased torque...
This paper is devoted to the development of a shared lateral control strategy for a Driver Steering Assist System (DSAS) that can share the authority with the driver. Up to now, this control issue is still an open research subject in automotive industry due to the complex interactions according to different driving situations between the Human (driver) and the Machine (DSAS). In this work, such interactions...
The ultimate goal of this study is to develop a robot that can play an alto recorder so that it sounds like a human is playing it. We have used unsteady flow rate measurements and control techniques in our research. It is particularly difficult for a robot to perform special musical effects, such as vibrato, tremolo, and tonguing. We present a method that models eight elements of the flow rate data...
This paper studies the difference between two scenes of a real time motion imitation by two persons: one scene is when the subject feels him/herself imitated and another scene is when the subject does not feel him/herself imitated. And this paper also considers that "Which body parts of the subject are frequently gazed by another person?". There has been researches focused on imitating human...
We propose an impedance voltage drop compensation method and a vibration voltage suppression control method by using feed-forward control. The filter L voltage is estimated from an inverter output current and the filter C current is estimated from by using inexact differential calculation, respectively. The design method for the proposed control is shown. In the case of linear-load and non-linear-load,...
This paper presents a methodology to evaluate and estimate the dispatch performance of a 30 MW PV power plant including a hybrid energy storage system (HESS) of various capacities. The HESS, consisting of a vanadium redox battery (VRB) and a supercapacitor bank (SCB) with a power rating ratio between the two energy storage technologies of 5:1, is connected at the point of common coupling (PCC) to...
Multiphase energy conversion systems have been recently proposed to achieve simple fault-tolerant operation with no extra hardware. When such multiphase systems are connected to the grid, efficiency is maximized by operating the system in a balanced manner with an equal distribution of the power among phases. However, the situation differs when the multiphase system is connected to different microgrids...
In order to be prepared for future challenges facing industrial production domain, Cyber-Physical Production Systems (CPPS) consisting of intelligent entities which collaborate and exchange information globally are being proclaimed as the 4th industrial revolution. In this context, the service-oriented architecture as well as agents are often proposed. Agent technologies have been studied intensively...
This paper presents guidelines for component design of the three-level three-phase T-source inverter with continuous input current under maximum boost control proposed recently. Steady state analysis under low-frequency current and voltage ripples in the dc side was made. Component sizes for both with and without low-frequency ripples are estimated and compared. Simulation results have confirmed most...
The sustainable energy based generation systems, such as photovoltaic and wind turbine generation systems, normally adopt inverters to connect to the grid. These power electronics interfaces possess characteristics of small inertia and small output impedance, which create difficulties to stabilize the voltage and frequency of a distributed micro power source. To deal with this problem, this paper...
This paper purposes a global optimization method that could be applied in parameter estimation of wind generation unit model. When complex nonlinear models, like a wind generation unit model are used, the parameter estimation based on local optimization methods, such as nonlinear least squares method or Newton's method, may not be able to find parameter values with acceptable accuracy. The global...
In this paper, a power system with an automatic generation control (AGC) in two contiguous areas are studied to demonstrate speed deviation of a generator due to photovoltaic (PV) power fluctuation in both time and frequency domains. The system is linearized and modeled in state-space representation. The change of the PV power is defined as the input of the system, and the change of speed deviation...
Simulation tools are necessary to research and develop modular multi-level converter (MMC) based HVDC systems for the future power grid. Real-time simulators offer the ability to connect to real physical equipment in a hardware-in-loop (HIL) scheme to test and design controllers, protection systems and encompass the complete operation and response of an HVDC system. The complexity of an MMC valve...
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