State space model identification of multirate processes with time-delay using the expectation maximization |
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| Authors: | Ya Gu Jicheng Liu Xiangli Li Yongxin Chou Yan Ji |
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| Institution: | 1. School of Electrical Engineering and Automation, Changshu Institute of Technology, Changshu 215500, Jiangsu, PR China;2. College of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China |
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| Abstract: | This paper presents the problems of state space model identification of multirate processes with unknown time delay. The aim is to identify a multirate state space model to approximate the parameter-varying time-delay system. The identification problems are formulated under the framework of the expectation maximization algorithm. Through introducing two hidden variables, a new expectation maximization algorithm is derived to estimate the unknown model parameters and the time-delays simultaneously. The effectiveness of the proposed algorithm is validated by a simulation example. |
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| Keywords: | Corresponding author |
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