一类含有有色噪声的鲁棒非线性扩展状态估计
A Class of Robust Non-linear Extended State Estimation with Colored Noise
师卫国 1朱可欣 1董燕飞 1祁林 1贺伟 1侯宁1
作者信息
- 1. 河南城建学院电气与控制工程学院,河南 平顶山 467036
- 折叠
摘要
针对含有有色噪声和通信带宽受限的网络化系统,设计了鲁棒非线性扩展状态估计算法.采用测量信息逐差法降低噪声相关性对系统造成的影响,再利用对数量化器进行测量信息处理,克服通信容量限制,创新地将不确定非线性项作为扩展系统的一个状态解决非线性问题,在此基础上设计了一种鲁棒非线性扩展状态估计器.运用Young's不等式和矩阵分析求解Riccati方程,得到估计器的误差协方差上界,实现增益的实时优化.该估计算法处理非线性系统更加方便,能够克服非线性函数处理时的保守性,且估计性能优异.
Abstract
A robust non-linear extended state estimation algorithm is designed for networked sys-tems containing coloured noise and limited communication bandwidth.The measurement information method of differences is used to reduce the influence of noise correlation on the system,and then the logarithmic quantizer is used to process the measurement information to overcome the communication capacity limitation,the uncertain non-linear item is innovatively regarded as a state of extended state to solve the non-linear problems.On the basis,a robust nonlinear extended state estimator is designed.Using Young's inequality and matrix analysis are applied to solve the Riccati equation,the upper bound of the error covariance of the estimator is obtained,and the real-time optimization of the gain is real-ized.The estimation algorithm is more convenient to deal with non-linear systems,and it can overcome the conservativenessin the treatment of non-linear functions,and has excellent estimation performance.
关键词
状态估计/非线性时变系统/扩展状态/量化处理/鲁棒控制Key words
state estimation/non-linear time-varying system/extended state/quantization process/robust control引用本文复制引用
基金项目
河南省高等学校重点科研项目(21B510002)
河南省科技攻关计划(212102310301)
河南省高等学校青年骨干教师培养计划(2020GGJS219)
河南城建学院青年骨干教师项目(YCJQNGGJS201906)
出版年
2024
国家科技期刊平台
NSTL
万方数据