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The post fault transient stability of the power system is assessed in this paper using Maximum Lyapunov Exponent (MLE). The phase angles, reported by the PMUs at the generator buses are used for estimating the MLE of the system. The sign and the magnitude of the MLE serve as indicators to the stability of the system. The method utilized for estimation of the MLE is independent of the system model...
Cognitive Radio (CR) technology constitutes a new paradigm where wireless devices can access the spectrum left unused by licensed or primary users in an opportunistic way. At the same time, these unlicensed secondary users (SUs) must reliably detect the presence of licensed primary transmission to avoid interfering with them. Information about primary users (PUs) locations are very important in Cognitive...
National Physical Laboratory, New Delhi (NPLI) has been maintaining time scale UTC (NPLI) with only one cesium atomic clock. NPLI has recently developed an automatic intercomparison system for the development of better time scale combining all its five clocks. A new algorithm has also been developed for this purpose. Using this algorithm, the analysis has been done based on the preliminary measurement...
This paper introduces a design and implementation of Hybrid approaches to control a wings valve using BLDC motor for a Aircraft. The control architecture consists of two layers of control, namely the opening and close speed associated control and the torque assist control. This has been realized by torque sensor and sensor interfaced in the DSP. A disturbance observer (DOB) based controller using...
Optical burst switching (OBS) that combines the advantages of OCS and OPS is an emerging technology to exploit the potential benefits of optical communication, that allow variable burst sizes and has gained much attention from both academic and industry. Low delay and also to reduce burst overlap in the electronic domain of an ingress node and hence to reduce burst loss improves quality of service...
This paper describes a behavioral synthesis tool called AccelFPGA which reads in high-level descriptions of digital signal processing (DSP) applications written in MATLAB, and automatically generates synthesizable register transfer level (RTL) models and simulation testbenches in VHDL or Verilog. The RTL models can be synthesized using commercial logic synthesis tools and place and route tools onto...
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