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The following topics are dealt with: advanced control strategies; multimedia system; computer network; wireless network; communication systems; database system; robotics; automation; decision making; information retrieval; data analysis and signal processing.
The optimal disturbance Suppressing problem for MIMO systems affected by external sinusoidal disturbances based on stability degree constraint is presented in this paper. The purpose is to find an LQR optimal controller, by which the cost function minimum and the state with the optimal having a higher mean-square convergence rate can be obtained. A LQR control law is derive from a Riccati equation...
A new TCN-network modeling method is presented for performance analysis in this paper. We describe the periodic scheduling algorithm of the bus administrator using OPNET Modeler. The time distribution occupied by master frame and slave frame is obtained in order to verify the reliability of the algorithm. Packet throughput and time latency characteristics are simulated and analyzed under different...
In Orthogonal Frequency Division Multiplexing (OFDM) system, Carrier frequency offsets (CFOs) between the transmitter and the receiver destroy the orthogonality between carriers and degrade the system performance significantly. On the basis of traditional frequency offset estimation algorithm, an improved carrier frequency offset estimation algorithm is presented in this paper, which uses one complex...
The principle and testing method of waste wood based panel connectors detecting system based on X-ray are introduced in this paper. In order to fix the shortcomings of small rightness, low contrast, slow gray change and serious noise pollution which X-ray image suffers from, the detecting image of waste wood-based panel connectors was processed by using the method of mathematical morphology. In this...
A universal active filter design method is proposed for the shortcomings of multi-components, bulk mass, complex debugging, cumbersome design and bad filtering characteristics of the conventional active filter. The system which mainly contains MAX275, Surplus MCU SPCE061A and digital potentiometer can implement 2nd-, 4th-, 6th- and 8th-order band pass or low pass filter response, such as Butterworth,...
Combined the advantage of Hopfield neural network and filled function method, a dynamic filled algorithm will be presented for constrainted global optimization of nonlinear programming. The algorithm contains two phases. The dynamic minimizing phase in which the dynamic minimizing system is used to find the local minimizer of the global optimization. And in the dynamic filled phase, a new initial...
To reduce negative influence of topology change on performance of Ad hoc network and decrease broadcasting overhead in the network, an MAC Relay On-demand Routing Protocol (MRODRP) was presented. It can rapidly access neighbor information within two hops utilizing neighbors' information among nodes, so that MAC may select next hop forwarding node based on neighbor states. Meanwhile, MAC controlled...
In the aviation in-situ eddy current non-destructive testing (ECNDT), there are increasing requirements for speediness, intelligence and integration. The signal conditioning bridge ciruit is one of the most important parts for realizing the requirements. This work proposes an approach to develop a novel digitally controlled bridge (DCB), which is based on relay arrays. It is used for impedance signal...
A Wireless Multimedia Sensor Network (WMSN) is a network of wirelessly interconnected devices i.e. sensor nodes that are able to retrieve data from environment in the form of audio/video streams, still images and scalar sensor data. Secure routing in WMSNs faces more challenges than those in traditional sensor networks because of multiple sink nodes and their mobility. In this paper a new method has...
In this paper, we study the consensus for multi-agent systems under continuous time-varying network. By introducing the concept of consensus, we draw the sufficient condition of second-order multi-agent system under provided connected networks. It guarantees that the multi-agent system achieves consensus in an exponential rate. Finally, a simulation example of three agents with different states verify...
In order to reduce image blur caused by the degradation phenomenon in the imaging process, the acquired images of the space remote sensing camera are restored. First, the frequency-domain notch filter is adopted to remove strip noises in the images. Then degradation function, which is referred to as the point spread function (PSF) of the imaging system is estimated using the knife-edge method. To...
In this paper, we focus on the problem of Unmanned Aircraft System (UAS) boundary detection, one of the most important intermediate steps to intelligent acquisition and processing, and proposed a wavelet transform optimization scheme for the purpose of improving traditional edge detect operators performance. The experimental evidence on Global Hawk unmanned system boundary extraction indicates the...
Global positioning system (GPS) is being actively employed in a variety of vehicular monitoring systems such as automated car navigation, emergency assistance, fleet management and automotive assistance. Nowadays easily observed many passengers footed at the Bus stations waiting for their desired bus. This paper considers performance issues in Public transport monitoring system that utilize GPS and...
Coverage optimization is a critical issue in 802.11 Wireless LANs planning problems. In this paper an immune network algorithm named opt-aiNet is studied in order to automatize the planning process by optimizing the BS's (Base Station) sites. Compared the results of opt-aiNet and genetic algorithms(GA) which have been used in radio coverage optimization before, we found that opt-aiNet could find the...
The paper presents an enhanced dead reckoning system that fuses data coming from odometry and gyroscope for a more reliable position estimate. Taking into account noise and drift properties of both odometry and gyroscope, and employing some rule-based algorithm, the system improves local self-localization by reducing the effect of non-systematic odometric errors caused by unpredictable bumps or uncertainty...
Facing the fierce market competition, industrial batch production enterprise needs to have the ability to manage huge amounts of recipes and satisfy dynamic market needs. Traditionally, many industrial batch processes are operated according to rigid recipes, in spite of the fact that production would benefit from flexible recipes that are efficiently adapted to changes in feedstock, product requirements,...
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