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In this paper, a miniaturized, low-profile, self-actuated radome is designed for achieving field intensity dependent electromagnetic (EM) protection in a working frequency band. The radome is periodic with each unit loaded with four microwave diodes. The demension of the unit is in size of λ/12 and is ultrathin. A full-wave simulation is carried out for obtaining the transmission characteristic of...
In this paper, a miniaturized self-actuated bandpass protection structure with filtering and limiting functions is presented. Based on energy low-pass mechanism, this protection structure is sensitive to the power density or field intensity of incident wave. The unit cell dimensions and periodicities are sub-wavelength which is in the order of λ/15. Mechanism of operation, structural design, and full-wave...
Aside from the benefits it brings, 3D-IC technology inevitably exacerbates the difficulty of power delivery with volumetrically increasing power consumption. Recent work managed to “recycle” current within the 3D stack by linking the different layers' supply/ground nets into a series connection. This charge-recycled (also known as voltage-stacked, or V-S) scheme provides a scalable solution for 3D-IC's...
The network resource allocation in SDN for control applications is becoming a key problem in the near future because of the conflict between the need of the flow-level flexibility control and the limited capacity of flow table. Based on the analysis of the difference of the definition of network resource between SDN and traditional IP network, the idea of the integrated allocation of link bandwidth...
Iterative decoding structure is the main feature of Turbo code decoding. It can improve the performance of Turbo decoding, but also increase the decoding complexity, time delay and power consumption. This paper proposes a parallel decoding structure of Turbo code based on double prediction control, i.e., using double prediction control module instead of two iterative decoding algorithms. Since the...
The linear induction motor (LIM) drives using conventional direct thrust control (DTC) schemes have drawbacks of large thrust ripples in low speed range and so on. In this paper, the thrust ripples of the DTC-based LEVI drives are theoretically analyzed. A novel switching scheme using synthesized voltage vector and magnitude modulation method is proposed to replace the conventional switching table...
This paper studies the switching sequences for Neutral-Point-Clamped SVPWM. Generalizes the combinations of three-segment switching state sequences, rules for minimizing the switching losses, and for the avoidance of 2-level phase voltage change are given. The PWM scheme using these rules is devised for eliminating even order harmonics in asymmetrical uniform sampling. Simulation results prove the...
A novel real time simulation (RTS) system for high power rail traction is developed. It includes simulation models of high power back-to-back converter and a synchronous motor (SM). The system runs on a dSPACE based platform connected to real converter and motor controllers by actual hardware interface. An algorithm of decoupling discrete event of converters and continuous time systems of SM is proposed...
The security and trustworthiness of enterprise networks have been a major concern in the research and practice of Intranet security. The security of endpoints and their network access are inevitably two important factors regarding enterprise network security. In this paper we present a novel architecture to enforce controls on endpoint application execution and network access, in which the policy...
This paper presents an improved decoding structure of turbo code based on parallel prediction control. The SISO module could be equivalent to a linear module established by the values of the former exterior information of the component decoder. The value of No (n+1) exterior information could be predicted by the linear module. Compared to the traditional decoding algorithm, the computation quantity...
An improved decoding structure of LPCA-turbo (linear prediction control algorithm, turbo code) is presented in this paper. A linear module established by the values of the former exterior information of the component decoder could be equivalent to the SISO module. By the linear module the value of No (n + 1) exterior information could be predicted. The computation quantity and time of the LPCA will...
DC-DC converters are required to supply various levels of voltages from batteries to different systems. In order to extend the lifetime of battery, it is very important to optimize the efficiency of the DC-DC converter, especially the light load efficiency. In this paper, considerations of the efficiency variation of a PWM synchronous buck-boost converter are made to minimize the power loss. Several...
This paper introduces an optimized sync switching method of spring operating mechanism based vacuum circuit breaker (VCB), and the development of an actual control system using TI 2812 DSP. This optimized method could efficiently reduce the switching surges caused by VCB operation. In this paper, factors that drift operating times including control voltage and count of operations are analyzed. An...
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