- 推荐网络例句
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Sure enough, as we turned into the inners alleys ofWuXin Street, it wasn't long before we came upon a hardware store just closing.
的确，当我们开车转进吴兴街的巷子里，没有多久时间，迎面就看到一家正要打烊的五金行。
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Generally a very good agreement was observed between experimental and simulated results , not only in terms of source spectra and overall sound levels, but also in terms of the noise source distribution in the rotor plane as a function of frequency and observer position.
一份非常利益协定通常被观察了在实验性和被模仿的结果之间，不仅根据来源光谱和整体声音强度，而且根据噪声源发行在电动子飞机作为频率和观察员位置功能。
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In order to make the new recursive method convergence fast, the RLS-like forgetting factor is introduced to construct the new data Hankel matrices. In the framework of subspace methods, the gradient type subspace tracking method is used to implement the update of the state subspace, which results the unbiased estimate. Different from traditional offline method, the system matrices are recursively computed using RLS method. The convergence analysis of the proposed method is given and finally, the efficiency of this method is illustrated with a simulation example.A new closed-loop identification method is proposed to implement consistency estimation of closed-loop subspace identification.
引入RLS-like遗忘因子机制构造新的数据矩阵，更好地跟踪系统时变信息，提高递推算法的收敛速度；在子空间辨识框架内，采用梯度型子空间跟踪算法实现对状态子空间的更新，避免了子空间近似带来的估计有偏性；与传统的离线算法不同，在得到系统状态子空间后，基于递推最小二乘方法提出新的算法，实现对系统矩阵的递推估计；并给出递推子空间辨识算法的收敛性分析；最后通过仿真实例验证算法的有效性。
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