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In this paper, a fluid-thermal coupled finite element model is established to calculate the temperature field of dry type air core reactor, the inner structure of reactor is built both considering the calculation accuracy and computation time. According to simulation results, the detailed temperature distribution regularity are given both with and without the rain cover, and it can be achieved that...
A novel 4H-SiC metal semiconductor field effect transistor with localized high-doped P-buffer layer is proposed in this paper. Compared with conventional structure, because of the higher doped concentration in the P-buffer layer between the gate and the drain, greater depletion layer generates and extends to the channel, which reduces the concentration of channel carrier and modulates electric field...
Dual-mode multielectrode recordings have become routine in rodent neuroscience research. However, robust and reliable application of acute, multielectrode recording methods in brain especially for in vivo research remains a challenge. In patients with Parkinson's disease (PD), the efficacy of L-dopa therapy depends on its ability to restore Dopamine (DA) neurotransmission in the striatum. In this...
This paper presents a neural adaptive controller for a class of nonlinear system in the presence of input saturation and arbitrary unknown information by integrating the design framework of neural networks (NNs) with the dynamic surface control (DSC) and backstepping technique. NNs are directly used to deal with unknown nonlinear terms. By introducing a well-defined smooth function and a Nussbaum...
When power system is subjected to severe disturbances and then will be out of step. The interconnected power grid should be split into several islands to avoid blackout. The controlled islanding is an active control technique based on the information from Wide Area Measurement System (WAMS) to accomplish the islanding task. This paper proposes a fast islanding strategy for large power networks. Firstly,...
With the scale of interconnected power grid expanding, the topology of fault network and admittance parameters become unavailable, which makes it difficult for line personnel in power system to do transient stability analyses. Aiming to solve the problem, this paper proposed the multivariate linear regression algorithm (multiple linear regression, the MLR) to identify the node admittance parameters...
This paper represents the control and simulation of cable-driven parallel robots (CDPRs) that applied in offshore cargo handling. Two control methods are introduced based on the dynamic equation of the CDPR, which are computed torque control and sliding mode control. The co-simulation model is established in Matlab/Simulink and Adams. Simulation results demonstrate that sliding mode control performs...
To meet the requirements of OSGi distributed processing capabilities from enterprise computing, this paper proposes a convenient way which adds distributed computing capability to OSGi framework and supports interoperation between OSGi and legacy CORBA applications. This is achieved by using CORBA dynamic technology which implements the remote service invocation capability and CORBA naming service...
Requirements of ATP ( Acquisition, Tracking, Pointing ) system for laser communication are expounded. According to the needs, the working of spot-detecting camera in ATP system is put forward, and the advantages of selecting CMOS sensor are explained. But the nonuniformity from CMOS sensor greatly limits the image quality of spot-detecting camera. So the nonuniformity must be corrected before image...
Patients suffering from facial paralysis are on the hazard of disfigurement and loss of vision due to loss of blink function. Functional-electrical stimulation (FES) is one possible way of restoring blink and other functions in these patients. A blink restoration system for uni-lateral facial paralyzed patients is described in this paper. The system achieves restoration of synchronized blink through...
The effect of power frequency electric field to human's living condition is being paid more attention; especially the abnormally large measurement data of power frequency electric field have caused public concern in high humidity conditions. To illustrate the abnormally large measurement data is caused by humidity which changed electrical performance of measurement equipment and its support, instead...
In this paper, we have employed density functional theory to investigate the adsorption mechanisms of one lithium atom on sidewalls of H-adsorbed (3, 3) single-walled carbon nanotubes (SWCNTs) which have vacancy defects. An understanding of influence of hydrogen adsorption and vacancy defects on lithium adsorption is obtained.
Measurement of business synergy is one of the major directions in research on business strategy. This paper first reviews the development of researches on measurement of business synergy. It then uses grey system methodology to develop an econometrics model for measuring the degree of synergy between different businesses in a company, based on synergy theory. It divided a business system into subsystems...
Evaluation method of service quality of restaurant is studied in this paper. Based on SERVQUAL, Evaluation system for restaurant is established. And empirical study is done for a restaurant in Mianyang,china. Service quality of the restaurant is evaluated by the restaurant's service quality evaluation method based on SERVQUAL. Then according to current service quality level of the restaurant, quality...
Production system is a highly complex, discrete event dynamic system, so it is difficult to build mathematic model of it, and simulation has become one of good method for studying it. Flexsim, which has been widely used in manufacturing, logistics, transportation, service system and so on, is a DEDS simulation software based on Object-oriented idea. UML is a object-oriented modeling language, which...
Anchoring effect of pre-stressed anchor cable's mechanism is complicated, the factors that influence pre-stressed anchoring effects are numerous. The anchoring load loss has close relations with rock and soil properties, material character, quality of anchor clamp, construction technology, operate and management level and so on, but the nature of anchored rock and soil properties is one of the most...
Enterprise project management is enterprise development innovation source power. By analyzing the influential factors of enterprise project management, then established enterprise project management capability evaluation index system,which including the enterprise strategy, project management team, the project management organization, project process control, multi-Project management and project management...
In order to improve the machining efficiency and precision of steam turbine blade, the accurate mathematics model of complex blade is built with non-uniform rational B-spline. An ameliorative adaptive feed speed interpolation algorithm for an non-uniform rational B-spline curve is proposed aim at blade curvature radius great change. The faster feed speed is adopt to increase the machining efficiency...
Signal processing is studied for Sagnac fiber distributed sensors. Wavelet denoising and wavelet decomposition are comparatively used to analyze signals in frequency domain to give smoothed frequency spectra, based on which null frequencies of the spectra are found more accurately. The analysis is helpful to more accurately locate the disturbance.
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