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.
This paper presents a flow distribution control algorithm for a tandem pump and an electric motor in an electric excavator system. Efficiency is the main issue for electric excavators since the main energy comes from the battery unlike the conventional hydraulic excavators. Better efficiency and longer working hours can be achieved if the main motor operates where the integrated efficiency of the...
A novel adaptive evolving Takagi-Sugeno (T-S) model identification method is investigated and integrated in a control architecture to control of nonlinear processes is investigated. The proposed system identification approach consists of two main steps: antecedent T-S fuzzy model parameters identification and consequent parameters identification. First, a new unsupervised fuzzy clustering algorithm...
Finite control set model predictive control (FS-MPC) has been shown to be a very effective approach to control of PMSM drives. FS-MPC is a very flexible tool since it can evaluate an arbitrary loss function. However, design of the appropriate loss function for the problem can be a challenge especially when the design input is visible only on the long horizon. An example where this problem becomes...
This paper presents a comparive analysis between four Maximum Power Point Tracking (MPPT) algorithms in centralized grid-tied Photovoltaic (PV) systems. The algorithms are used to control the duty cycle of a DC-DC converter in order to boost the output voltage of the PV generator and guarantee the operation of the solar panels in the Maximum Power Point (MPP). Three of the analyzed algorithms correspond...
The basic theory of video denoising is firstly systematically studied. Non-local means spatial domain filter method and its advantages compared to other traditional methods are discussed in detail. On this basis, taking the issue of temporal domain denoising into account, a novel spatio-temporal combination method for video denoising is proposed. What is more, adaptive filter strength is introduced...
In this paper, a general multirate approach is proposed for direct closed-loop identification of mechanical resonances above the Nyquist frequency without injecting any external persistently exciting (PE) signals. Based on the polynomial transformation technique, an extended least-squares (ELS) algorithm is designed to estimate parameters of the mixed-rate model, from which parameters of the fast-rate...
This paper analyses the position error compensation in quadrature analog magnetic encoders through the iterative linear search optimization algorithm of "steepest descent". In current literature, the sine/cosine signals from the encoder are compensated considering only the gain mismatch, the DC offset components and the non-orthogonality. Nevertheless, the magnetic field distortion due to...
This paper is concerned with the problem of event-triggered distributed H∞ filtering for a class of networked systems with sensor networks. First, an event-triggered scheme is introduced to select those necessary data packets to be transmitted for filter design. As a result, communication and energy resources can be significantly saved while some certain system performance can be preserved. Second,...
This paper presents a novel auction-based structure to multi-robot coalition formation problem. The structure, which is called multi-robot Coalition Structure Generation based on Credit Mechanism (CoSGCrM), contains a sub-optimal coalition member selection algorithm with an analysis of its soundness and completeness. A credit mechanism is introduced to reduce the complexity for the coalition leader...
A constant on-time (COT) single-inductor bipolar multiple-output (SIBMO) on-chip boost converter is proposed for LCD drivers in this study. The converter is designed for biasing some analog and digital circuits fabricated on glass substrates for benefits of extending the life of LCD. These circuits on glass require bipolar high voltages for drive LCDs. The converter boosts the input of 2.8V to two...
This paper proposes a numerical algorithm for drawing distribution maps of switching power-converter characteristics on parameter spaces. The concept of the proposed algorithm is that parameters satisfying the assigned conditions are derived and followed with low computation cost. Zero-Voltage-Switching (ZVS) region, output power distribution map, and contour map of power-conversion efficiency of...
In this paper is presented a novel capacitor voltage balancing algorithm for Modular Multilevel Converter. The problem in the Modular Multilevel Converter is that the DC-BUS voltage doesn't distribute equally between the capacitors producing voltages unbalances. These voltages unbalances are produced by multiple factors such asymmetries, modulation or by circulating current and influence the correctly...
Non-intrusive load monitoring (NILM) is an important topic in smart-grid and smart-home. Many energy disaggregation algorithms have been proposed to detect various individual appliances from one aggregated signal observation. However, few works studied the energy disaggregation of plug-in electric vehicle (EV) charging in the residential environment since EVs charging at home has emerged only recently...
This paper presents a new topology of hybrid AC-DC standalone system based on solar photo-voltaic (PV) array and wind turbine (WT) feeding three-phase four-wire loads. The proposed hybrid system employs two back to back converters and dc-dc boost converter to achieve maximum power point tracking (MPPT). To balance the power at the PCC, the system is reinforced by BESS (Battery Energy Storage System)...
In this work we study a new Improved Adaptive Incremental Conductance (IAIC) algorithm proposed originally by A. Morales-Acevedo for maximum power point tracking (MPPT). The maximum power point is searched by means of an adaptive correction of the DC-DC converter duty cycle which is determined by the sum of the incremental and the instantaneous conductance at a given time. The operating principle...
The efficiency of solar power systems, either concentrating or non-concentrating, can be increased by incorporating a tracking system. The tracking controller requires the position of sun in the sky which can be obtained by using a sun position algorithm that calculates sun position in a certain coordinate system. This papers presents a method to calculate the sun position which could be useful in...
This paper introduces a variable interleaving technique for photovoltaic cascaded DC-DC converters. A series rather than parallel connection of converters allows higher switch utilization and lower rating of components; however, they suffer from nonhomogeneous irradiations condition. Under partial shading conditions, the input power of all PV panel will not be the same and as a result the output voltage...
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.