Gain-Scheduling Multi-Bit Delta-Modulator for Networked Controlled System

Ivan Lopez (1) , C. T. Abdalla (1) , Carlos Canudas de Wit (2)

1 ECE Department - Department of Electrical and Computer Engineering [Albuquerque]
2 NECS - Networked Controlled Systems

We analyze in this paper stabilization issues for a Networked Control System that uses a Delta-Modulator Scheme within the encoder/decoder structures. We also analyze the packet-loss issue, and determine a maximum allowable number of consecutive bits lost while keeping stability. We then design a compensation scheme for re-synchronizing the encoder and decoder, after a bit is lost in a network without acknowledgment signals. We finally present a compensation scheme that ensures stability after a pre-determined number of bits is lost. Examples and simulations are provided to demonstrate the results.

Domaines: Automatique / Robotique

Ivan Lopez, C. T. Abdalla, Carlos Canudas de Wit. Gain-Scheduling Multi-Bit Delta-Modulator for Networked Controlled System. ECC 2007 - European Control Conference, Jul 2007, Kos, Greece. pp.s/n. ⟨hal-00201789⟩