Frequency conditions for stable networked controllers with time-delay. (English) Zbl 1416.93180
Summary: The paper analyses a networked control system consisting of a linear time-invariant system with a static feedback nonlinearity, subject to large delays in the feedback loop. This model is valid for example in wireless data flow control, where a saturation occurs since the flow is one-directional. The present paper extends previous results by proving necessity, in case the loop gain is uniformly less than one. The results are validated and illustrated in a simulation study.
MSC:
| 93D25 | Input-output approaches in control theory |
| 93B52 | Feedback control |
| 93C10 | Nonlinear systems in control theory |
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