[1]WANG Yongshuai,CHEN Zengqiang,SUN Mingwei,et al.Smith prediction and active disturbance rejection control for first-order inertial systems with long time-delay[J].CAAI Transactions on Intelligent Systems,2018,13(4):500-508.[doi:10.11992/tis.201705031]
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Smith prediction and active disturbance rejection control for first-order inertial systems with long time-delay
CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
13
Number of periods:
2018 4
Page number:
500-508
Column:
学术论文—人工智能基础
Public date:
2018-07-05
- Title:
- Smith prediction and active disturbance rejection control for first-order inertial systems with long time-delay
- Keywords:
- systems with long time-delay; first-order inertial systems; LADRC; Smith predictor; stability margin; Routh criterion; stability analysis; stable region
- CLC:
- TP272
- DOI:
- 10.11992/tis.201705031
- Abstract:
- A system with long time-delay is a typical difficulty experienced in industrial process control. When an advanced control method is applied to such a system, an ideal control effect can be obtained only by combining it with a traditional Smith predictor. In this paper, we address first-order inertial systems with long time-delay, investigate the combined design of a Smith predictor with the linear active disturbance rejection control (LADRC) technique, and discuss the system stability conditions and parameter perturbations. We prove that the closed-loop control system is stable when the parameters of the controlled object are identical to the Smith predictor parameters. Moreover, we deduce a sufficient condition for maintaining the stability of the control system when these parameters differ. In addition, using numerical simulation, we analyze the impacts of perturbation of the system and control parameters on the transient performance, stability margin, and disturbance rejection ability. These results can be used to tune the parameters of the Smith predictor and LADRC controller.
- References:
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Last Update:
2018-08-25