Outlier-Resistant Observer-Based Control for a Class of Networked Systems Under Encoding–Decoding Mechanism

This article is concerned with a new outlier-resistant observer-based control problem for class of networked systems (NSs) under the encoding–decoding communication mechanism (EDCM). In order to lighten burden and enhance data security, EDCM introduced in observer-to-controller channel. case measurement outliers, specific saturation function adopted observer structure restrain abnormal innovations so as mitigate side effects brought from outliers. The aim this design an controller, such that presence closed-loop NS achieves input-to-state stability (ISS) EDCM. By means uniform quantization technique, criterion first established terms sizes encoding alphabet period ensure detectability NS, requirement also given on capacity channel at each time instant. Then, help ISS theory, desired controller obtained its gain matrix parameterized by solution certain inequality can be solved via standard software packages. Finally, effectiveness derived theoretical results verified through three numerical simulation examples.