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This paper addresses collective rotating motions of second-order multi-agent systems in three-dimensional space (3D). Two distributed control protocols are proposed and sufficient conditions are derived under which all agents rotate around a common point with a specified formation structure. Simulation results are provided to illustrate the effectiveness of(More)
A new modulated hopping Discrete Fourier Transform (mHDFT) algorithm which is characterized by its merits of high accuracy and constant stability is presented. The proposed algorithm, which is based on the circular frequency shift property of DFT, directly moves the k-th DFT bin to the position of k = 0, and computes the DFT by incorporating the successive(More)
Based on enhanced interpolation DFT, a novel parameter estimation algorithm for the exponential signal is presented. The proposed two-step solution consists of a preprocessing unit which constructs a new signal sequence by continuously cycle shifting sample points and summing up N buffered exponential signal sample sequences, then an interpolation DFT(More)
This paper first reviews the application of computing technology in electric power system, with emphasis on the evolution of the software architecture. And then proposes a software architecture to implement power system operation and computing. As power systems have become more complicated, software tools and simulations have played a more important role.(More)
In this paper, we modify the modulated wideband converter (MWC), which is a compressive sensing-based sub-Nyquist sampling system, to acquire signals with time-varying spectral support. We begin by introducing a rectangular window function into MWC. Then, we study how the window function affects MWC. Theoretical analysis shows that after incorporating(More)
This paper presents a high-efficiency blind carrier frequency estimation algorithm. The proposed algorithm is based on the power spectrum symmetry of the modulation signal, utilizes the moving averaged power spectrum to iteratively identify the carrier frequency in according to the power difference between the upper sideband and lower sideband, which is(More)