Modelling of Lime Kiln Using Subspace Method with New Order Selection Criterion

Author:

Zhang Li1ORCID,Zhang Chengjin1,Xu Qingyang1,Wang Chaoyang2

Affiliation:

1. School of Mechanical, Electrical and Information Engineering, Shandong University, Weihai 264209, China

2. College of Mathematics and System Science, Shandong University of Science and Technology, Qingdao 266590, China

Abstract

This paper is taking actual control demand of rotary kiln as background and builds a calcining belt state space model using PO-Moesp subspace method. A novel order-delay double parameters error criterion (ODC) is presented to reduce the modeling order. The proposed subspace order identification method takes into account the influence of order and delay on model error criterion simultaneously. For the introduction of the delay factors, the order is reduced dramatically in the system modeling. Also, in the data processing part sliding-window method is adopted for stripping delay factor from historical data. For this, the parameters can be changed flexibly. Some practical problems in industrial kiln process modeling are also solved. Finally, it is applied to an industrial kiln case.

Publisher

Hindawi Limited

Subject

General Engineering,General Mathematics

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