Stability of sampled-data linear active disturbance rejection control: A classical control approach

Stability of continuous-time and sampled-data LADRC is investigated with classical control approach. For the second-order uncertain LTI plant, the LADRC is described as an interconnection structure. Then sufficient conditions to guarantee continuous-time and sampled-data LADRC stabilizing the plant...

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Bibliographic Details
Main Authors: Huiyu Jin, Lili Liu, Weiyao Lan, Jianping Zeng
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
bandwidth method
Euler approximation
linear active disturbance rejection control
Linear systems
Observers
Robust control
Sampled data systems
sampled-data
stability
Stability analysis
Tuning
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Summary:Stability of continuous-time and sampled-data LADRC is investigated with classical control approach. For the second-order uncertain LTI plant, the LADRC is described as an interconnection structure. Then sufficient conditions to guarantee continuous-time and sampled-data LADRC stabilizing the plant are proved respectively, while in proving the main theoretical tool is Nyquist diagram. With these results, a continuous-time controller designed with bandwidth tuning approach can be used as sampled-data controller after Euler approximation with a small sampling period.
ISSN:1948-3457
DOI:10.1109/ICCA.2017.8003080