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Magnetically controlled shape memory alloy (MSMA) which has fast response, high energy density and other excellent characteristics, have a broad application prospects as a potential intelligent sensor materials. However, the unclear correlation between the environment temperature and the sensing characteristics limits the application of MSMA in the sensor field. According to the sensing characteristics...
With the rapid development of Internet technology, related departments such as the party and government offices, enterprise organizations and national defenses will deal with a large number of digital archive information, some important data classified need transmit through the network. Study how to ensure the safety of the archives preservation and transmission is a matter of individual, collective...
In the application of megawatt(MW) rated railway traction drives, as switching frequency is only several hundred hertz, the bandwidth of current loop is usually limited. Instead of instantaneous current feedback control, indirect current control (ICC) is widely used in the front-end four-quadrant converters. Suffering from the low-speed dynamic response and cross-coupling between active and reactive...
In allusion to the fact that the heavy and inaccuracy workload as well as the problems which are lack of accuracy and practical applicability of model based on conventional component-based approach load modeling, this paper applies the theory of fuzzy C means clustering and pattern recognition, with full use of the power information from consumer side collected by the load control system in power...
Micro-grid is a brand new concept of power grid, which can provide the possibility for large-scale distributional power access. Micro-grid, connected to the main network when absorbing or supplying energy, breaks from the master network and turns into isolated network operation status if the primary network fails. Only through coordinated control of micro-power and energy storage devices can micro-grid...
As a dominant distributed generation (DG), wind power turbines are expanding in the grid. However, when large-scale wind farms integrated with the weak grid, it will change the power flow distribution, voltage profile which results in profound influence on transient stability of the power grid. It is important to study the dynamic response characteristics of the wind power generator in the case of...
A new methodology based on support vector machines (SVM) for the industry load proportion forecasting of a substation is presented to solve the problem that parameters of substation composite load model are randomly time-varying. The SVM algorithm is used to forecast a substation daily load curve and extract characteristic quantities of the substation daily load. Based on this, typical characteristic...
This paper discusses a simple approach to design the robust controllers of PID for certain parameters of variable pitch fan control system will change at low-temperature environment. As for interval plant with variable interval parameters, a new approach is presented which is based on the Generalization of Kharitonov Theorem and a Generalization of Hermite-Biehler Theorem via Interval Polynomial Stabilization...
The traditional information retrieval technology can not satisfy the personalized queries. To solve this problem, we have researched and improved the standard BP algorithm to find user's potential demands, and finally an improved BP neural network algorithm based on personalized search method is proposed. The experiment shows that the algorithm can effectively enhance BP algorithm convergent speed...
Microtubules, microfilaments, and neurofilaments are cytoskeletal elements that affect cell morphology, cellular processes, and mechanical structures in neural cells. The objective of the current study was to investigate the contribution of each type of cytoskeletal element to the mechanical properties of axons of dorsal root and sympathetic ganglia cells in chick embryos. Microtubules, microfilaments,...
Primary blast injury (PBI) is a common injury associated with present military conflicts and leads to significant neurological deficits. In order to prevent and treat this injury, an appropriate understanding of the biological response is required. A blast wave generator was created as an experimental model to elucidate this response by creating a repeatable blast injury on ex-vivo guinea pig spinal...
The repetitive control technology is a high cost-performance waveform control technology widely used in the control of inverter. Compensator as the key parts of repetitive controller is usually adopted as the combination of notch filter with second-order filter. The process of designing and debugging of the repetitive controller, which needs more experiences, is very tedious. In this paper, FIR (finite...
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