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Mixed Time-/Event-Triggered Quantization Strategy Design for Linear Systems
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DOI：10.1109/TAC.2025.3639864.png)
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Abstract
En 中文
This technical note investigates the stabilization of a continuous-time linear system, whose feedback loop is closed over a digital communication network with bit rate constraints and network delay. To reduce the required bit rate for the stabilization of the concerned system, we propose a novel quantization strategy, which can utilize both the quantization bits and the time information to encode the system state. The time information is carried by event-triggering time instants and transmission time instants and can provide extra state information to the controller without consuming any bit rate. The proposed strategy schedules multiple data transmissions in a time-triggered manner after a triggered event. By appropriately co-designing transmission time instants and the corresponding quantization scheme, our time information can produce more state information than existing approaches. We derive a sufficient bit rate condition to guarantee the input-to-state stability of the concerned system, which depends on the unstable eigenvalues of the system matrix and the upper bound of network delay. The derived stabilizing bit rate can be lower than the current minimum stabilizing bit rates due to our enhanced time information. Numerical examples are provided to confirm the effectiveness of the proposed strategy.
Keywords:
Bit rate
input-to-state stability (ISS)
mixed time-/event-triggered
networked control systems (NCSs)
quantization
Journal
IF:
7
Papers:
1.3W
Citations:
6.7W