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In this paper, equivalent circuit of short wave length coplanar waveguide employing Periodic Ground Structure on Silicon (PGSS) were investigated using theoretical analysis. Equivalent circuits for the PGSS cell were extracted, and all lumped circuit parameters were expressed by closed form equation. A fairly good agreement between calculated and measured results were observed from 0 to 25 GHz. Above...
The faults of rolling bearings frequently occur in rotary machinery, therefore the rolling bearings fault diagnosis is a very important research project. In this paper, a method of pattern recognition for fault diagnosis of rolling bearing is proposed, which is based on wavelet packet transformation combined with Statistics. Firstly, the wavelet packet analysis is utilized to divide the dynamic signal...
The main reason for the deterioration of electrical equipment insulation is the high- voltage discharge. So, real-time monitoring of electrical equipment discharge is the key to ensure the safe operation of equipment. Using the UV signal in solar blind area as characteristic parameter, this paper designs the Optical Fiber Sensor and analyze its spectral response characteristics. The lens coupling...
Robust kidney segmentation from MR images is a very difficult task due to the especially gray level similarity of adjacent organs, partial volume effects and injection of contrast media. In addition to different image characteristics with different MR scanners, the variations of the kidney shapes, gray levels and positions make the identification and segmentation task even harder. In this paper, we...
A power controller for the Lundell automotive alternator is proposed with load current sensing. The power controller determines exactly how much power the alternator will need to generate, based on the actual load current measurement and the programmable battery charging profile. To validate the effectiveness of the proposed power controller, experiments are performed under the conditions that the...
An improvement has been done in the sub-pixel interpolation algorithm proposed by Quine et al. by using iterative technique to obtain an accurate solution. Simulation results shows that the accuracy of the new iterative algorithm compared with the original one is significantly better.
Electronic sealed-bid auctions are a method to establish the price of goods through the internet while keeping the bids secret during the bidding phase. In this paper, our concern is incoercibility of an auction protocol. This paper gives the first security model of incoercible sealed-bid auctions. By using undeniable signatures and deniable encryptions as building blocks, an efficient sealed-bid...
Sensitivity is one of the most important parameters for piezoresistive pressure sensors. It is usually through superior design of the full scale output of pressure sensors to achieve high sensitivity of the devices and meet the requirement for certain application. Two kinds of methods of evaluating the full scale output of pressure sensors are discussed .Both of them are based on finite element analysis...
A acoustic cylinder array of passively omnibearing directivity is designed, including receiving element, transmission and control system, whose characters are: firstly there are N ×M signal receiving elements in the array, and N linear arrays well-proportioned arrangement, meanwhile the first element of each array lain at the top of acoustic cylinder array constitute a M elements uniform circle array;...
A multitarget passive recognition and location method which fuses SVM and blind signal processing technique is proposed in this paper. Its characters are: Sampling data via multitarget information receiving array at first; And then getting separated signal and matrix by blind signal separation (BSS) to these data; Completing classification of each separated signal by using decision tree support vector...
A novel diimine ligand 9-(N-butyl)-4,5-diazafluoren(BADF) and corresponding rhenium tricarbonyl complex Re[(BADF)(CO)3Cl] (BADF-Re) have been synthesized. Photophysical behaviors are investigated by UV-vis absorption and fluorescence spectrometry. It is found that the triplet metal-to-ligand charge-transfer dπ(Re)-π*(N-N) (3MLCT) emission of BADF-Re centered at around 563nm. Theoretical calculation...
In this paper, we propose a novel data embedding method based on the pixel segmentation strategy with minimum distortion. The well-known exploring modification direction (EMD) embedding method achieves a high image quality; however, the corresponding embedding capacity is low. Some recent works extended the embedding capacity of EMD method by using various strategies. Inspired by Lee et al.’s work,...
This paper presents the design of wireless and motor control system for Amoeba-like robot based on the radio frequency chip of nRF24L01. Atmega16 is used as a micro-controller which is in charge of configuring nRF24L01 to fulfill the wireless transmitting and receiving control information. The wireless communication module transmits the information which is collected by the robot into the upper machine...
This paper presents a chip implementation of fast frame synchronous scheme for forward error correction (FEC) layer of 10 Gb/s Ethernet frame. The fast frame synchronous methodology is achieved by changing the endian mode, the improved error trapper circuit can work in both syndrome generator mode and error trapper mode. One is the current syndrome generator; the other is the improved error trapper...
Self organizing network (SON) techniques, algorithms and eventually standards are critical steps in long term evolution (LTE) femtocell deployments. Third generation partnership project (3GPP) standardizes self-optimizing and self-organizing capabilities for LTE in order to provide the upcoming requirements of broadband mobility, development of SON, inter cell interference (ICI) elimination, fairness,...
On the basis of the OTSU methods study, the paper introduced adaptive genetic algorithm to optimize algorithm and achieve image segmentation. Experiment shows that the speed of the algorithm improves and the quality of segmentation is better. Lay the foundation for image recognition in the following.
A new adaptive sliding mode control algorithm, based on the T-S fuzzy model, is proposed to deal with the problems of uncertainty and disturbances in networked control system (NCS) . There is variable time delay occurs between controller and actuator in the NCS. Firstly, Choosing the time delay as premise variables of the fuzzy system, the system with control time delay is transformed into the one...
Focusing on the defects of traditional contactless power transfer systems with an AC-DC-AC power transition type, a high-frequency bridge type bidirectional switch AC-AC direct converter was presented to generate the high-frequency current in the primary circuit. Applying the principle of energy injection and free oscillation, the operating state of IGBTS were designed and the high frequency current...
In this paper, we study the impact of multi-radio multi-channel Wireless Mesh Networks (WMNs) characteristics on the performance of Expected Transmission Count based metrics (ETX-based). Many characteristics of multi-radio multi-channel WMNs such as channel switching, an absence of a direct connection between neighbors, and difficulty of measuring the packet loss probability in the both forward and...
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