Stability analysis of networked control systems subject to packet-dropouts and finite-level quantization

作者：Ishido Yumiko^*; Takaba Kiyotsugu; Quevedo Daniel E

来源：Systems & Control Letters, 2011, 60(5): 325-332.

DOI：10.1016/j.sysconle.2011.02.008

• Networked control systems
• Finite-level quantization
• Packet-dropouts
• Stability analysis
• Buffering

This paper is concerned with the stability analysis of a networked control system, wherein communication from the controller to the plant input is through a digital channel subject to packet-dropouts and finite-level quantization. No acknowledgments of receipt are available to the controller. To alleviate the effect of packet-dropouts, the controller transmits tentative plant input sequences. Within this setup, we derive a sufficient condition for small E signal l(infinity) stability of the networked control system. This condition requires the maximum number of consecutive packet-dropouts to be bounded. We also elucidate the trade-off which exists between the disturbance attenuation and the step size of the quantizer and the maximum number of consecutive packet-dropouts.

• 出版日期2011-5