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In this paper, a mixed-signal interface for gyroscopes is designed, proving the feasibility of interface with PI controller-based self-oscillation and bandpass sigma delta modulator. According to the simulation results, driving circuit is stably self-excited and sensing circuit functions well as a sigma delta modulator.
In this paper, we propose an enhanced QoS prediction approach to predict the missing QoS values for QoS-based selection. Compared with existing QoS prediction methods, our proposed A Smooth approach has two differences: 1) using A-cosine equation for similarity calculation to remove the impact of different QoS scale, 2) adding a data Smoothing process to improve the prediction accuracy. An extensive...
On the condition that it is difficult for small and medium enterprises (SMEs) to finance from specialized financial institutions such as banks, trade credit has become an important financing channel for SMEs. Based on evolutionary game theory and replicator dynamics equation, this paper studies the evolutionary game process of strategy choosing for bounded rational credit providers and SMEs in the...
Monopulse radar is widely used for its accurate angle measurement. However, when jamming occurs, especially in mainlobe, the performance of the monopulse technique for target estimation deteriorates greatly. In this paper, an improved method for monopulse angular tracking is proposed, which can be divided into two stages. The first one involves a digital beamforming system which is used to suppress...
During the partner selection process in a virtual enterprise, the information about the candidates and their performances are incomplete and uncertain. In this paper, vague sets theory is introduced to give comprehensive consideration to truth membership, false membership and uncertainty membership degree of the candidates to satisfy the decision-maker. On the basis of the agreement index of satisfaction...
This paper uses multi-conductor transmission line (MTL) to model transformer winding. Firstly, distributed parameters should be computed. According to capacitance, inductance and resistance parameter, transmission line equation can be solved by input terminal impedance method. Thus, voltage distribution in transformer winding can be obtained by solving MTL equation. In this paper, only voltage distribution...
Aiming at the difficulty in evaluating the falt risk of the power plant equipment with quantitative method, fuzzy comprehensive evaluation method based on analytic hierarchy process (AHP) is proposed with the help of the theory of fuzzy mathematics. With this method the mathematical model is constructed, and the weight coefficient of each factor is suggested as well as the calculation process. The...
Nowadays X-ray Nondestructive Testing ( NDT ) has played an important role in defect inspection but the X-ray image contains all the information the rays passed by, therefore, it is hard to inspect the inner defect of PCB correctly. The correct inspect is rely on an image reconstruction system. In this study, a X-ray image reconstruction algorism to inspect the defect in a Printed Circuit Board (...
The efficiency of induction motors for electric vehicles must be researched deeply over the entire operating speed region. Up to now, the calculation models of the efficiency of the induction motor for electric vehicles are less accurate over some operating regions, such as owing to omitting the variations of the motor parameters with frequency. The paper puts forward a calculation model of the induction...
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