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.
Artificial Immune Recognition System (AIRS) is an algorithm inspired by animal immune system in the biological world. It is specialized in solving pattern recognition problems. Heating, Ventilation and Air Conditioning (HVAC) systems are widely installed in modern buildings to provide the occupants with a satisfactory indoor environment. HVAC systems are the some of the most power consuming equipment...
Partial least squares (PLS) regression is a versatile modeling approach for high-dimensional data analysis. Recently, PLS-based variable selection has attracted great attention due to high-throughput data reduction and modeling interpretability. In this paper, a class of variable selection methods for PLS, which employs marginal screening approaches to select relevant variables, is proposed. The proposed...
Corpus annotation at discourse level requires modeling the entire structure of a discourse. The existing methods have difficulties in differentiate macro- and microstructure of a discourse. Taking account of this, discourse information theory (DIT) provides the theoretical basis for establishing discourse information annotation tagsets and practical annotation methods. Having set up an equation between...
In this paper, the forward and inverse kinematics of a robot manipulator named RV-M1 are analyzed. The forward kinematic model is based on the DH parameters, and the inverse one is derived in closed form. Then, the interactive simulation system is established using MATLAB software which is one of the most used platforms for the modeling and simulation of robot systems. Finally, the simulation results...
This paper proposes a new method of the direct torque control of permanent magnet synchronous motor (PMSM). The theory of feedback linearization is introduced, which will enable the original system to realize input-output linearization control. The analysis for conditions of the control system to realize feedback linearization was conducted and the control model of the system was given. The control...
The article deals with the calibration and simulation of the odometry based on iRobot Create. The mathematical model of robot was built and analysed. In order to calibrate the odometry and modify the parameter in the programme, we carried out UMBmark test. The accumulation of errors was simulated through Kalman filter theory.
Line loss management is an effective measure for electric power company to reduce running cost. An electric power company has collected a large amount of marketing data in recent years with the construction of information acquisition system. From the data management and analysis point of view in this paper, combining Oracle database and Matlab to create partition of marketing data and then defining...
Compared with plane fracture problem, elastic-plastic fracture problem of stiffened plate under bending has its particularity and inevitability for research, and its essence is a three-dimensional fracture mechanics problem. The aim of this paper is to develop a method to analyze bending elastic-plastic fracture of stiffened plates with crack in plate based on Dugdale model, combined with the Paris...
In this letter, the contact length (source and drain electrodes length) scaling potential in staggered organic thin-film transistors (OTFTs) was studied. We performed the effect of gate–source voltage, channel length, semiconductor film thickness, mobility, material disorder, anisotropy of mobility, and Schottky barrier between organic semiconductor and source/drain electrodes on the contact length...
In order to correct non-uniform backgrounds in thermal images of carbon fiber-reinforced polymers (CFRP), we propose a processing and analysis procedure in this paper. We apply thermographic signal reconstruction (TSR) using time-direction information to reduce noise in thermal images, followed by Whittaker smoothing (WS) to further reduce noise in two-dimensional image space. Finally, polynomial...
Doubly-fed wind power generator (DFIG) type is the mainstream model of the wind turbine at home and abroad. To study the impact of large-scale wind power grid on power system reliability, it must have accurate model parameter. In the Matlab/Simulink environment, We have set up a simulation model for the wind turbine grid and have got the measured data. The artificial neural network algorithm is applied...
Taking the DSP (TMS320LF2407) as the main control chip, the construction of the platform for electric vehicle battery management system (BMS) is completed in this paper. Then the expanded Kalman filter (EKF) algorithm is combined with the Thevenin battery model through the MATLAB simulation and with which the working status of the battery is simulated successfully. Finally through the simulated test...
The operation control for many complex industrial processes consists of two layer — loop control layer and operational control layer. The former aims at achieving the required loop control for each production unit along production line whilst the later optimizes the set-points to the control loops so that certain performance indexes (such as product quality and energy cost) is optimized when the closed...
Nonlinear hysteretic phenomena occur in many physical systems, such as electronic throttle and solenoid valves in automobiles, piezoelectric sensors, and many other mechanical actuators. In order to handle the nonlinear properties of hysteretic systems, an indirect adaptive fuzzy controller (IAFC) is proposed in this paper. However, it is a hard task to directly identify unknown hysteretic effects...
We develop a finite volume method on a geometrically refined mesh to effectively treat the boundary layer singularity of the solutions to the boundary value problem of fractional differential equations. We further exploit the structure of the stiffness matrix to develop a properly modified fast conjugate gradient method for the efficient solution of the linear algebraic system. The fast method has...
The problem of joint input and state estimation is discussed in this paper for linear discrete-time stochastic systems. By minimizing an objective function of weighted least squares estimation with respect to the states and unknown inputs, a recursive filter approach referred to as General Kalman filter with unknown inputs (GKF-UI) is obtained. It is shown that the proposed GKF-UI approach covers...
In this paper, a class of general non-Gaussian stochastic systems with disturbances are studied. Based on the disturbance observer (DO) design method, an anti-disturbance iterative learning control (ILC) algorithm is proposed by establishing the statistic information tracking control (SITC) framework. Different from the existing stochastic control methods, the driven information for control feedback...
Issues of vibrations in marine applications have become a major concern for many years. As a result, this paper investigates the flatness control of fitted equipment on marine vessels, which are subjected to disturbances from random sea wave. A back stepping control strategy is proposed to reduce the effect of disturbance simulated as random sea waves on the active marine suspension model. The control...
Predictive control based on mixed logical dynamical (MLD) model can be used as control strategy for hybrid systems effectively. Active fault tolerant control can safeguard the systems running normally, in the case of the damage of the part components in the systems. In this paper, active fault tolerant control based on MLD model is researched with actuator fault. Active fault tolerant control scheme...
The Anand constitutive model has emerged as a popular method to describe the inelastic deformation behavior of Sn-Pb solders and, more recently, to describe the behavior of lead-free solders in electronic assemblies, mainly due to its effective description of constitutive behavior and high compatibility with finite element modes. Heretofore, although plenty of experimental and theoretical works have...
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.