...
首页> 外文期刊>IEEE Transactions on Automatic Control >Discrete Fourier transform and H/sub infinity / approximation
【24h】

Discrete Fourier transform and H/sub infinity / approximation

机译:离散傅立叶变换和H / sub无限大/逼近

获取原文
获取原文并翻译 | 示例
           

摘要

It is shown that uniform rational approximation of nonrational transfer functions can always be obtained by means of the discrete Fourier transform (DFT) as long as such approximants exist. Based on this fact, it is permissible to apply the fast Fourier transform (FFT) algorithm in carrying out rational approximations without being apprehensive of convergence. The DFT is used to obtain traditional approximations for transfer functions of infinite-dimensional systems. Justification is provided for using the DFT in such approximations. It is established that whenever a stable transfer function can be approximated uniformly on the right half-plane by a rational function, its approximants can always be recognized by means of a DFT.
机译:结果表明,只要存在这样的近似值,就可以始终通过离散傅里叶变换(DFT)获得非有理传递函数的一致有理逼近。基于这一事实,可以在不担心收敛的情况下,将快速傅里叶变换(FFT)算法应用于有理逼近。 DFT用于获得无穷维系统传递函数的传统近似值。提供了在这种近似中使用DFT的理由。可以确定的是,只要稳定的传递函数可以通过有理函数在右半平面上均匀地近似,就可以始终通过DFT识别其近似值。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号