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In sensor networks concerning about data, data management and representation have become a crucial issue. In this paper, sensor networks deployed to monitor wetland are built with the visualization of their data and topology. The environmental data, such as temperature, humidity, both in atmosphere and soil, illumination intensity and PH around the wetland are sent by the wireless sensor networks...
Creative endeavors "design work" are necessary to make up products like various machines. The expert who has knowledge, experience, and knowhow plays an important role to continuing enterprises. How to improve the intellectual productivity of design business is a pressing problem need to solve in manufacturing as one of onsite items. Many general-purposed CAD systems are good to support...
In order to eliminate the shortcomings of traditional neural networks in handwritten Chinese characters recognition, such as the premature convergence, a novel intelligent method is presented, which uses the particle swarm optimization (PSO) algorithm with adaptive inertia weight to train the neural networks. The main idea is that the optimum weights and thresholds of the neural networks is acquired...
Adjusting the operation mode of the nodes in wireless sensor networks can extend the networks lifetime effectively. The distributed protocol PEAS reduces the network's consumption by a method which maintains only a necessary number of nodes working and the other nodes sleeping, but in this method some of the nodes' energy will be exhausted early because of their continuous working. In response to...
This paper focuses on the electrostatics discharge immunity of frequency control system belonged to the switched reluctance drive system, especially analyzed the electrostatics discharge immunity testing technology and its implementation way. Furthermore, the paper presents the suggestion and method in order to improve the stability and immunity of the whole frequency control system.
PID and fuzzy PID controller are applied into the wind turbine with nonlinear mathematical model. PID control has simple principle and its parameters setting are rather easy. Fuzzy control need not to establish the mathematical of the control system and has strong robustness. Fuzzy PID control is combined with PID control and fuzzy control. The advantages of fuzzy PID control are simple, easy in setting...
A direct adaptive fuzzy control scheme is developed for a class of continuous-time nonlinear systems. In this scheme, using the fuzzy logic system online approximation capability, the fuzzy approximator is used to design a direct adaptive fuzzy controller, and the unknown parameters are adjusted by the time-varying dead-zone, which its size is adjusted adaptively. The proposed design scheme guarantees...
Immune genetic algorithm is to imitate the biological mechanism for the development of the system. It can be applied to solve the series-parallel system reliability optimization problems, and more optimal solution of the global will be provided. Experimental results show that the global convergence and the speed of convergence are both improved.
We design a component based grid architecture on Globus. The system can be partitioned into two parts: a component support Grid environment, and a distributed user access gateway. The component support environment is composed of component container and basic component support services. Component container provides component run environment and manages the lifecycle of components, supplies component...
In this paper, the authors research on the scheduling and control co-design of networked control systems (NCSs) to enhance the performance of control systems. Optimization of sampling period is the basic way in co-design of scheduling and control. During the study, the sampling periods of networked control systems with multiple control loops have been scheduled by rate monotonic (RM) algorithm to...
This paper discussed the parallel methods to implement the ant colony algorithm, the simulated annealing and their hybrid algorithm, established a cluster of PCs system, and tested the parallel algorithms in MPI. Based on the theoretic and practical study, the performance differences between parallel algorithms and traditional algorithms were analyzed, the feasibility of proceeding parallel algorithm...
This paper designs a integrated relay parameter detecting system based on PIC18F452 microcontroller, in accordance with the principle of the relay action, it analyses the testing method of the voltage parameters and the time parameters, introduces the hardware structure and the software process of the testing system, the serial communication of the SCM and PC as well as the PC interactive interface...
With the development of large scale integrated circuit technology and computer technology, that using a microprocessor as the core microcomputer of excitation thyristor converter will become the main development of thyristor converters in the future. This paper introduces the features of dsPIC30F6011, and focuses on the structure and function of the intelligent detection and control modules in the...
This paper considers a swarm model with a class of simple attraction and repulsion functions and delves into the question of ??soft control?? for swarms system in Euclidean space, which disturb the collective behavior of the group by adding a few controlled intelligent agents at the condition of keeping the local rules of the existing agents in the system. This paper gives a control law for controlled...
Video surveillance images are always contaminated by noise. In order to improve the quality of the images for further processing, it is necessary to denoise. The paper takes advantages of the characteristics of wavelet and Wiener filtering, proposes a kind of image de-noising algorithm. Compared with wavelet threshold de-noising algorithm and spatial Wiener filtering, it can improve PSNR efficiently...
Introduce Switched Reluctance Motor Speed Control System and Operation Control.. Because of the need to drag the large inertia loads, So that instability in the braking process. Therefore analysis the basis of characteristics of SRD and control, proposed that we used iterative learning algorithm to control the current method, composed of dual Closed-loop control system. And MATLAB simulation for Switched...
Due to the rapid spreading nature of Internet worms, it is necessary to implement automatic mitigation on the Internet. Inspired by worm vaccinations, we propose a novel epidemic model which combines both vaccinations and dynamic quarantine methods, referred to as SEIQV model. Using SEIQV model, we obtain the basic reproduction number that governs whether or not a worm is extinct. The impact of different...
Endless rolling multi-drive control system is the position servo control system whose information flow is based on Fieldbus, actuators AC motors, control and amplification devices frequency converters. According to experimental method to establish mathematical models of endless rolling simulation test platform, considering some of the special requirements, the LQR control algorithm based on fuzzy...
In this paper, a designing system of low-voltage AC contactor parts is developed by using the techniques of development for Pro/ENGINEER. Industry standard and expertise are added into the designing process, parameter-driven technology is used to realize product parts' parametric design, at the same time, ADO technology is adopted to build the database of low-voltage AC contactor's designing knowledge...
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