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| Identification of FIR systems under difference-driven scheduled quantized observations |
| DongLiang1,2,RuizheJia1,2,FengweiJing3,YongSong3,JinGuo1,2 |
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| (1 School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China
2 Key Laboratory of Knowledge Automation for Industrial Processes, Ministry of Education, Beijing 100083, China;3 National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, University of Science and Technology Beijing, Beijing 100083, China) |
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| 摘要: |
| In networked system identification, how to effectively use communication resources and improve convergence speed is
the focus of attention. However, there is an inherent contradiction between the two tasks. In this paper, the event-driven
communication is used to save communication resources for the identification of finite impulse response systems, and the
input design is carried out to meet the requirements of convergence speed. First, a difference-driven communication is proposed.
Then, the performance of the communication mechanism is analyzed, and the calculation method of its communication rate is
given. After that, according to the communication rate and the convergence rate of the identification algorithm, the input design
problem is transformed into a constrained optimization problem, and the algorithm for finding the optimal solution is given. In
addition, considering the case that the output is quantized by multiple thresholds, the way to calculate its communication rate
is given and the influence of threshold number on communication rate is discussed. Finally, the effectiveness of the algorithm
is verified by simulation. |
| 关键词: System identification · FIR system · Difference-driven · Quantized observation |
| DOI：https://doi.org/10.1007/s11768-023-00149-8 |
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| 基金项目:This research was supported in part by the National Natural Science Foundation of China (No. 62173030) and in part by the Beijing Natural Science Foundation (No. 4222050). |
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| Identification of FIR systems under difference-driven scheduled quantized observations |
| Dong Liang1,2,Ruizhe Jia1,2,Fengwei Jing3,Yong Song3,Jin Guo1,2 |
| (1 School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China
2 Key Laboratory of Knowledge Automation for Industrial Processes, Ministry of Education, Beijing 100083, China;3 National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, University of Science and Technology Beijing, Beijing 100083, China) |
| Abstract: |
| In networked system identification, how to effectively use communication resources and improve convergence speed is
the focus of attention. However, there is an inherent contradiction between the two tasks. In this paper, the event-driven
communication is used to save communication resources for the identification of finite impulse response systems, and the
input design is carried out to meet the requirements of convergence speed. First, a difference-driven communication is proposed.
Then, the performance of the communication mechanism is analyzed, and the calculation method of its communication rate is
given. After that, according to the communication rate and the convergence rate of the identification algorithm, the input design
problem is transformed into a constrained optimization problem, and the algorithm for finding the optimal solution is given. In
addition, considering the case that the output is quantized by multiple thresholds, the way to calculate its communication rate
is given and the influence of threshold number on communication rate is discussed. Finally, the effectiveness of the algorithm
is verified by simulation. |
| Key words: System identification · FIR system · Difference-driven · Quantized observation |
