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The optimal planning of distributed photovoltaic system is conducive to reducing the adverse impact of high-permeability random access on power distribution systems. In this paper, a optimization planning model of locating and sizing of distributed photovoltaic power generation system is established to improve the permeability of PV system on the premise of the safe operation of the power system,...
Requirement on accuracy of geometrical size of axis parts is very high. By adopting traditional contact measuring methods may scratch the work piece, and it has disadvantages like high cost and low efficiency. Axis part meter of light curtain style has adopted optics non-contact measurement, so it has perfectly solved problems like this. In the paper, in-depth analysis of image de-noising principle...
Cyber-physical system (CPS) is a system featuring a tight combination and coordination between the system's computational and physical resources. As a CPS representative, the Weather Monitoring and Train Traffic Control Simulation System (WMT2CS2) includes two subsystems: the wireless sensor network front end and the train traffic control simulation subsystem. The sensing front end collects the real-time...
Multi-hop time synchronization in wireless sensor networks (WSNs) is often time-consuming and error-prone due to random time-stamp delays for MAC layer access and unstable clocks of intermediate nodes. Constructive interference (CI), a recently discovered physical layer phenomenon, allows multiple nodes transmit and forward an identical packet simultaneously. By leveraging CI, we propose direct multihop...
Exploiting constructive interference in wireless networks is an emerging trend for it allows multiple senders transmit an identical packet simultaneously. Constructive interference based flooding can realize millisecond network flooding latency and sub-microsecond time synchronization accuracy, require no network state information and adapt to topology changes. However, constructive interference has...
In order to solve the problem of real-time and accuracy for collecting the traction battery evaluation parameters, including battery voltage, battery current and battery temperature, the data acquisition system based on Field Programmable Gate Array(FPGA) and Universal Serial Bus Protocol (USB2.0) is designed. In this paper, FPGA is used as the microcontroller to control analog to digital(A/D) conversion...
In recent years, electric vehicle is coming into a new fast developing period. PMSM as one of the representatives of new technologies and products has been used in the area of controlling of motor's drive successfully. On account of its advanced control strategy and differences from conventional Vector Control of motor, DTC of PMSM has becoming a hotspot for resolving. This paper gives us an introduction...
Energy saving in urban residential buildings is one of the essential means for implementing and promoting low carbon living environment and sustainable urban development. Therefore, adopting effective energy saving measures in operating building is very important. In line with the worldwide promotion for saving natural resources and protecting the environment, significance progress has been made in...
Cyberspace has become a promising research topic in recent years. One of the key problems to be solved is to evaluate the robustness of the networked nodes, that is, how the network enhance the system performance and how to measure the contribution quantitatively, which plays a crucial role in both network plan and security sectors. In this article, we proposed two methods to measure network robustness...
Self-cancellation schemes have received a lot of attention due to their simple implementation and high efficiency to suppress intercarrier interference (ICI) in Orthogonal Frequency Division Multiplexing (OFDM) systems. Among those ICI self-cancellation methods, Symmetric Conjugate Symbol Repetition (SCSR) has been proven to have the best bit error ratio (BER) performance for phase noise suppression...
As an effective method, the generation-based heuristic algorithm gets information from the history search at one generation, and then uses this information to generate some other solutions as the next generation so that a near optimum solution can be found. To do this effectively, how to represent a solution is a fundamental problem. After providing a new representation for a solution, a hybrid algorithm...
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