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A study on The Nonlinear PID Predictive Controller
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비선형 PID 예측 제어기의 연구

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Type
Academic journal
Author
Journal
The Institute of Electronics and Information Engineers The Institute of Electronics Engineers of Korea - IE Vol.38 No.4 KCI Accredited Journals
Published
2001.12
Pages
102 - 111 (10page)

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Result
A study on The Nonlinear PID Predictive Controller
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Abstract· Keywords

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A new class of nonlinear PID controllers are derived for nonlinear systems using Nonlinear Generalised Predictive Control(NGPC) approach. First the disturbance decoupling ability of the nonlinear generalised predictive controller is discussed. For a nonlinear system where the disturbance cannot be decoupled, a nonlinear observer is designed to estimate the offset. By selecting the nonlinear gain function in the observer, it is shown that the closed-loop system under optimal generalised predictive control with the nonlinear observer is asymptotically stable. It is pointed out that this composite controller is equivalent to a nonlinear controller with integral action. As a special case, for a nonlinear system with a low relative degree, the proposed nonlinear controller reduces to a nonlinear PID predictive controller, which consists of a nonlinear PID controller and a prediction controller. The design method is illustrated by an example nonlinear mechanical system

Contents

1. 서론

2. 외란을 갖는 비선형 GPC

3. 외란 관측기

4. 적분동작을 갖는 제어기 구조

5. NGPC에 의해 제어되는 폐루프 시스템의 안정도

6. 비선형 PID 예측 제어기

7. 실험 및 고찰

8. 결론

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