该模型通过对图像梯度的分析，在梯度变化剧烈区域和梯度变化微小区域利用二阶模型去噪以提高去噪效率；
Through analyzing the image gradient, this model used second order model to denoise at the region with obvious gradient change and the region with tiny gradient change.
对于可以用延时二阶模型来拟合的过程，使用一种智能采样技术，结合阶跃下降法，实现了对实时过程的在线模拟。
An intelligent sampling technique coupled with the steepest descent method is implemented for on-line estimation of the process, which can be approximated by a second-order model with time delay.
本文运用实际系统向二阶模型逼近的方法，导出了求解调节器参数的矩阵方程，并编制了相应的计算机辅助设计的程序。
In this paper, a matrix equation for solving regulator parameters is derived, based on approximating the practical system to a typical two-order model. Corresponding CAD program is provided.
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