• Title/Summary/Keyword: hammerstein nonlinear process

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A new identification method for MIMO Hammerstein nonlinear precesses

  • Lee, Yong-Joon;Sung, Su-Whan;Park, Sunwon
    • 제어로봇시스템학회:학술대회논문집
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    • 2002.10a
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    • pp.61.5-61
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    • 2002
  • 1. Introduction 2. Development of the Proposed Identification Method 2.1 MlMO Hammerstein nonlinear process 2.2 Process activation 2.3 Identification of the linear dynamic subsystem 2.4 Identification of the nonlinear static function 3. Simulation Study 4. Conclusion. Acknowledgment. References

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Sequential Loop Closing Identification of Hammerstein Models for Multiple-Input Multiple-Output Processes (다변수 Hammerstein 공정의 순차 확인법)

  • Park Ho Cheol;Koo Doe Gyoon;Lee Moon Yong;Lee Jietae
    • Journal of Institute of Control, Robotics and Systems
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    • v.10 no.12
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    • pp.1280-1286
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    • 2004
  • A lot of industrial chemical processes contain certain input nonlinearities even though they are controlled by several linear controllers. Here we investigate a sequential loop closing identification method for MIMO Hammerstein nonlinear processes with diagonal nonlinearities. The proposed method separates the identification of the nonlinear static function from that of the linear subsystem by using a relay feedback test and a triangular type signal test. From 2 n activations for n n MIMO nonlinear processes, we sequentially identify the whole range of the nonlinear static function as well as the transfer function matrix of the linear subsystem.