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Permanent Magnet Synchronous Generators (PMSGs) are increasingly considered for large, direct-drive Mega-Watt level wind energy conversion systems. Highefficiency, high-power density, low maintenance, and high reliability are some cited benefits of PMSGs making them attractive for onshore and offshore wind farms. However, as the PMSG's power level increases so would its weight and size. This research...
This paper proposes a design method of multilateral systems including system connection. To consider system connection, the proposal uses a reachability matrix. A multilateral system enables us to transmit haptic information between many human operators. If the multilateral systems consists of many master system and one slave system, many operator can share the haptic information of an environment...
Some design schemes of data-driven control methods which called model free methods have been proposed in nearly a decade. Fictitious Reference Iterative Tuning (FRIT) method which is one of the data-driven control has good advantages. This method can calculate the control parameters by the operation data which is under closed loop control. This paper provides the PID parameter calculation based on...
During the European project Local4Global a control and optimization algorithm aimed to systems of systems was designed. Along with the algorithm, a gateway-like software was developed in order to host it. This highly adaptable and extensible framework enables access and control to different device and entities that compose the system it is deployed on. Use of standards and predefined interfaces ensure...
The State-of-charge (SOC) is a critical parameter for the battery, which is a hot research in areas such as new energy vehicles, but the research on lead-acid batteries as backup power in Uninterrupted Power System in data center has rarely been done. In this paper, for the first time, a model named Poly-Nernst, which is a combination of polynomial model and Nernst battery model, is proposed to estimate...
This article presents a performance comparison between two state observers in a pole placement control (PPC). The first is a classical full order states observer and the second observer is proposed in this work, which is based on a State Variable Filter (SVF). A inverted pendulum on movable base was the system chosen to accomplish performance comparison of the state observers. Simulation results are...
This paper proposes an AC LED driver with high power factor and balanced brightness. While conventional LED driver has some problems of large size and lifespan, the proposed driver overcomes those problems by elimination of inductors and electrolyte capacitors. The proposed circuit consists of bypass MOSFETs, digital logic controller and current regulator. The bypass MOSFETs, which are connected in...
Standard solution to reduce switching ripple in power converters is to employ LC(L) output filters, with higher attenuation requiring higher switching frequency and/or larger filter size. High switching frequency can increase the converter losses, whereas large filter reduces the bandwidth and increases cost of the power converter. The alternative path of increasing the filter order is taken in this...
In this paper, the position tracking control with finite-time convergence has been studied for a class of nonliear uncertain robot manipulators. Radial basis function neural network (RBFNN) based adaptive control is designed to compensate for the effect of the unknown dynamics. To achieve the finite-time convergence of both trajectory tracking error and RBFNN learning error, barrier Lyapunov functions...
This paper addresses robust filtering for nonlinear systems with parameter uncertainties. We developed a new robust unscented Kalman filter (RUKF) which doesn't require calculating Jacobian matrix by using Unscented Statistical Linearization to consider the influence of parameter uncertainties of covariance matrices. The RUKF is more accurate than conventional UKF when the systems have parameter uncertainties...
The electricity consumption in the industry occupies considerable ratio in the gross electricity consumption compared with the consumption in other sectors e.g. residential, agriculture etc. One crucial solution to this problem is to optimize the production structure. The grand plan “Industry 4.0” provides a more adaptable and flexible perspective for the smart factory. The complexity of a manufacturing...
This work presents a method for automating the glass cutting process in a product line of a touch screen panel. The mechanical roller cutting method has been used for some time for industrial processes of glass. However, the existing mechanical glass cutting method needs workers to break the glass after the scribing process. The glass can become damaged during the breaking process because it is difficult...
Reactive production scheduling involves searching methodologies in a wide solution space. A criterion often used in the analysis of results for this type of problem is makespan. Many artificial intelligence techniques are being used in an attempt to minimize the makespan. The use of global and local search hybridization has been well referenced. Usually the each global search for a solution applies...
Microgrid increases the reliability and quality of supply of industrial and commercial buildings. The operation in islanding mode is a challenging issue due to the limited energy available and the lack of a main grid for synchronizing purposes. This paper presents both the design of a small-scale industrial microgrid and a hierarchical control strategy for islanding mode operation. The control scheme...
From the structure point of view, a repetitive controller (RC) is considerably similar to a disturbance observer. By adding a correction term to the traditional RC and considering the disturbances as states, the repetitive controller can be designed in the same way as a disturbance observer. This paper presents therefore a new simple way of tuning a repetitive controller. Simulations show that, when...
The design of networked observers has recently received much consideration. This paper is concerned with the design of distributed observers with arbitrarily large communication time delays. A traditional centralized observer assumes access to the full output the plant. In the real world situations, the output is often measured by distributed senors connected through a communication network. We propose...
Building energy management is a major R&D topic, as buildings account for about 32% of energy consumption worldwide. Design and implementation of controller for energy efficient operation in building is one of the methods to save the energy in the building. In this paper, a fuzzy logic based approach is used to design the energy management controller. Fuzzy logic has been widely used in the control...
Blood cell analysis is significant for both medical treatment and prevention. For this purpose many vital helps are provided by Automatic Hematology analyzers in layered or distributed framework which is generally composed of management systems and control systems, leading to simplified design process and more convenient maintenance and operation procedures. Users interact with the analyzer through...
Several major technical obstacles appear when moving toward more electric aircraft (MEA) architecture. First, there has been an increasing number of power electronic components used in aircraft power systems, leading to the modelling complexity. Second, the number of variables for system modelling increase significantly, leading to high computational complexity. To overcome these difficulties, this...
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