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Feedforward and Feedback Control Performance Assessment for Nonlinear Systems

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  • Zhiguo Wang
  • Jun Chen

Abstract

A performance assessment method for nonlinear feedforward and feedback control systems is proposed in this paper. First, the existence of minimum variance performance bound for two nonlinear systems with different structures is analyzed, and the closed-loop model of nonlinear system is obtained with the help of iterative orthogonal least squares identification method. Then, the technology of variance analysis is introduced to establish the variance contributions due to both disturbances and controller. A nonlinear performance index for the feedforward and feedback control systems is estimated using an ANOVA-like variance decomposition method. Finally, a meaningful example is simulated to show the effectiveness of our method.

Suggested Citation

  • Zhiguo Wang & Jun Chen, 2014. "Feedforward and Feedback Control Performance Assessment for Nonlinear Systems," Abstract and Applied Analysis, Hindawi, vol. 2014, pages 1-12, April.
    • Handle: RePEc:hin:jnlaaa:597805
    DOI: 10.1155/2014/597805
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