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This paper aims to investigate problems of multivariable controller design for Aeroengine. A design method of model reference adaptive control system was established based on the theory of super stability. By ensuring the global stability and asymptotic stability of the system, the adaptive controller of aeroengine was carried out by using this method. The tracking performance, anti-interference ability...
Due to it is difficult to predict the diffusion of city haze, based on the Gaussian plume dispersion model, at first, the paper researches the applicable conditions, and then proposed several methods to amend the model, such as surface roughness, atmospheric stability, secondary pollution and condition of breeze. On this basis, we established the Multi-source haze diffusion model, which is constituted...
A dynamic model is proposed to quantify the relationship among extracellular agonist ATP, intracellular Ca2+ dynamics and NFAT activation in stem cells. Based upon the dynamic model, the intracellular Ca2+ and NFAT dynamics in stem cells induced by different kinds of ATP stimuli are investigated through numerical simulation studies. The simulation results not only reproduce intracellular Ca2+ and...
Haptic data reduction schemes address the high packet-rate requirements of networked haptics. Perception-driven predictive coding approaches enable strong packet rate reduction while keeping the introduced distortion below human haptic perception thresholds. The performance of predictive coding is strongly influenced by factors such as human behavior, system characteristics, geometric and impedance...
This paper propose a genetic based fuzzy logic controller to regulate the speed of separately excited DC motor. The fuzzy membership function and rules are optimized based on genetic algorithm. The DC motor speed control system is modeled and simulated in MATLAB/SIMULINK. Simulation results show that the optimized fuzzy logic controller not only has no overshoot, minimum settling times and vibrations,...
Construction of UHV power grid is the fundamental guarantee to the growing demands of electricity in the future. Six phase transmission lines can evidently improve power transmission density, and many countries pay attention to it. A new method of fault location and phase selection on six-phase transmission lines was analyzed in this paper. The six sequence variables method to analyze the electrical...
In this paper, the absolute stability of a new class of Takagi-Sugeno (T-S) fuzzy Lurie control systems with multiple time-delays is investigated. By utilizing the Lyapunov stability theory and the linear matrix inequality (LMI) approach, a novel delay-dependent absolutely stable condition is derived. In addition, by using Simulink toolbox in MATLAB, a simulation example is provided to demonstrate...
In this paper, experiments of a kind of SMA wire are carried out for shape memory effect and the shape memory effect under different temperatures are discussed in detail. Then, a mathematic model of stress-strain of SMA wires is proposed and corresponding model parameters are determined. A new SMA actuator is brought forward and its design formula and control strategy are explained. The construct...
This paper describes a dynamics model of a underwater glide vehicle. And a accurate model for calculating fluid dynamics of glide hydrofoil is also incorporated into the simulation. The model is used to simulate the glide motion of the underwater glide vehicle which is propelled and controlled through changing the gravity and location of gravity. The simulation results indicate that the underwater...
Image fusion is a very important step for image mosaic. Fusion algorithms affect the visual effect and quality of the mosaic images directly. This paper presents an adaptive weighted coefficients algorithm for image fusion. The algorithm can adjust weighted coefficients adaptively along with changes of the range and shape of the overlapping regions. First, Harris operator is used to detect feature...
SELinux is a strong and flexible system with a well-defined MAC architecture. It provides a mechanism to enforce the access control based on confidentiality and integrity requirements which offers an effective protection of information security. This paper describes in what way SELinux uses various models and policies to secure the information safety which different from others, especially from a...
The bionic flapping hydrofoil propulsion, as a new propulsion mode, is different with the traditionary screw propeller, and it has attract the interest of the technologist in the aeronautics, astronautics and marine field. The underwater bionic flapping hydrofoil propeller is a system which can produce the thrust and can also produce the control force. This paper describes a hydrodynamics model of...
The ocean current is a disturb force when the autonomous underwater vehicle (AUV) navigating in the sea, it can induce the position change of the dynamic positioning AUV, so it can effect the low velocity maneuvers of the torpedo-shaped long-distance AUV. The appropriate motion math model for the torpedo- shaped long-distance AUV was built and the model for AUV’s ocean current disturb force was built...
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