### Abstract

The authors study tracking and disturbance rejection of a class of nonlinear time-invariant systems with proportional plus integral (PI) compensator. The basic assumptions on the plant--exponential stability and monotonicity of the dc steady-state input-output map--are satisfied by typical chemical process (with appropriate choices of inputs and outputs). It is shown that, for a large class of nonlinear plants, a simple PI controller (which is commonly used in process control) can be used to achieve a stable unity-feedback closed-loop system which asymptotically tracks reference inputs that tend to constant vectors and asymptotically rejects disturbances which tend to constant vectors.

Original language | English |
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Pages (from-to) | 1596-1599 |

Number of pages | 4 |

Journal | Proceedings of the American Control Conference |

DOIs | |

State | Published - 1 Dec 1985 |

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## Cite this

*Proceedings of the American Control Conference*, 1596-1599. https://doi.org/10.23919/ACC.1985.4788869