A New Differential State Estimator and Controller for Nonlinear Stochastic System

QI Guo-yuan; CHEN Zeng-qiang; Xue Wei; YUAN Zhu-zhi

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A New Differential State Estimator and Controller for Nonlinear Stochastic System

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- A New Differential State Estimator and Controller for Nonlinear Stochastic System
- Acta Electronica Sinica Vol. 32, Issue 4, Pages: 693-696(2004)
- 作者机构：
  
  1. 天津科技大学自动化系,天津,300222
  2. 南开大学自动化系,天津,300071
  3. 天津科技大学自动化系天津,300222
  4. 南开大学自动化系天津,300071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP273
- Published：2004
- 稿件说明：
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QI Guo-yuan, CHEN Zeng-qiang, Xue Wei, et al. A New Differential State Estimator and Controller for Nonlinear Stochastic System[J]. Acta Electronica Sinica, 2004, 32(4): 693-696.
DOI：

QI Guo-yuan, CHEN Zeng-qiang, Xue Wei, et al. A New Differential State Estimator and Controller for Nonlinear Stochastic System[J]. Acta Electronica Sinica, 2004, 32(4): 693-696. DOI：

摘要

本文提出一类不依赖被估计系统模型微分状态估计器

参数少、精度高

通过分析其根轨迹和极点要求配置合适的参数;给出了完整的稳定性和收敛性证明;频率特性分析表明

该估计器具有较好的滤波特性.另外

基于所提出的估计器

本文设计了不依赖非线性系统模型的高阶微分反馈控制器.该控制器稳定性好

鲁棒性强.最后

通过几个仿真例子验证了所提出理论的正确性.

Abstract

This paper presents a new differential state estimator

which does not rely on the model of the estimated system and has higher accuracy with a few parameters.Its parameters are distributed through root-locus and pole requirements.Stability and convergence of the estimator are proved.Frequency characteristic analysis shows its high quality filtering property. Further more

based on the estimator a high order differential feedback controller is designed

which does not rely on the model of the nonlinear system

and has well stability and robustness.Lastly

to illustrate

two simulation examples are given.

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