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| Predictor-based sampled-data output-feedback control for feedforward nonlinear time-delay systems |
| WenjieZhang1,WeihaoPan1,XianfuZhang1,QingrongLiu2 |
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| (1 School of Control Science and Engineering, Shandong University, Jinan 250061, Shandong, China
2 School of Mathematics and Quantitative Economics, Shandong University of Finance and Economics, Jinan 250014, Shandong, China) |
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| 摘要: |
| This paper studies global stabilization via predictor-based sampled-data output feedback for a class of feedforward nonlinear
time-delay systems. Note that the traditional sampled-data observer via zero-order holder may result in the performance
degradation of the observer. In this paper, an improved predictor-based observer is designed to compensate for the influence
of the unmeasurable states, sampling errors and output delay. In addition, a sampled-data output-feedback controller is also
constructed using the gain scaling technique. By the Lyapunov–Krasovskii functional method, the global exponential stability
of the resulting closed-loop system can be guaranteed under some sufficient conditions. The simulation results are provided
to demonstrate the main results. |
| 关键词: Feedforward nonlinear systems · Time delay · Predictor-based observer · Sampled-data output-feedback controller |
| DOI：https://doi.org/10.1007/s11768-024-00237-3 |
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| 基金项目:This work was supported by the Autonomous Innovation Team Foundation for “20 Items of the New University” of Jinan City (202228087) and the National Natural Science Foundation of China (62073190). |
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| Predictor-based sampled-data output-feedback control for feedforward nonlinear time-delay systems |
| Wenjie Zhang1,Weihao Pan1,Xianfu Zhang1,Qingrong Liu2 |
| (1 School of Control Science and Engineering, Shandong University, Jinan 250061, Shandong, China
2 School of Mathematics and Quantitative Economics, Shandong University of Finance and Economics, Jinan 250014, Shandong, China) |
| Abstract: |
| This paper studies global stabilization via predictor-based sampled-data output feedback for a class of feedforward nonlinear
time-delay systems. Note that the traditional sampled-data observer via zero-order holder may result in the performance
degradation of the observer. In this paper, an improved predictor-based observer is designed to compensate for the influence
of the unmeasurable states, sampling errors and output delay. In addition, a sampled-data output-feedback controller is also
constructed using the gain scaling technique. By the Lyapunov–Krasovskii functional method, the global exponential stability
of the resulting closed-loop system can be guaranteed under some sufficient conditions. The simulation results are provided
to demonstrate the main results. |
| Key words: Feedforward nonlinear systems · Time delay · Predictor-based observer · Sampled-data output-feedback controller |
