LU X K, JIAO L, LU C.Sub-iteration updating multi-innovation gradient estimation algorithm for Hammerstein system[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(4):130-139.

doi:10.16186/j.cnki.1673-9787.2021080086

Received:2021/08/24

Revised:2021/12/12

Published:2023/07/25

Sub-iteration updating multi-innovation gradient estimation algorithm for Hammerstein system

LU Xikun, JIAO Long, LU Chao

School of Electronic Information and Electrical Engineering，Anyang Institute of Technology，Anyang 455000，Henan，China

Abstract:To solve the unknown order of Hammerstein and multi innovation length constraint，a sub-iteration updating multi innovation gradient identification algorithm was proposed.By using the sub-decomposition technology，the identification model with parameter separation was constructed.To facilitate the parameter identification，a determinant ratio algorithm was designed to obtain the system degree information.Based on the multiple iterative updating theory，the given multi innovation was decomposed into sub innovation，in which the identification performance was improved.The convergence performance of the proposed scheme was strictly analyzed theoretically by using the martingale difference convergence theorem.Finally，the advantage of the proposed algorithm was validated by comparing existing identification schemes.

Key words:parameter identification;multi-innovation idea;reference model;Hammerstein system;sub-iteration updating

Hammerstein系统...迭代更新多新息梯度估计方案_鲁西坤.pdf