Control and Stability Analysis for the Vdd-hopping Mechanism

Carolina Albea-Sanchez (1, 2) , Carlos Canudas de Wit (1) , Francisco Gordillo (2)

1 NECS - Networked Controlled Systems
2 ISA - Departamento de Ingenieria de Sistemas y Automatica [Sevilla]

In low-power electronics, achieving a high energy efficiency has great relevance. Nowadays, Global Asynchronous Local Synchronous Systems enables to use a Local Dynamic Voltage Scaling architecture. This technique allows to reach a high energy efficiency. Moreover, Local Dynamic Voltage Scaling can be implemented using different approaches. One of them is the Vdd-Hopping technique. In this paper, we propose an innovative control approach which aims for minimizing the energy dissipated during the Vdd-Hopping transients. In addition, our control also includes the ability to limit the current peaks during such transients. Stability of the closed-loop system is analyzed. A discrete version of this controller is obtained, which coincides with ENergy-AwaRe Control (ENARC) that is patent pending. And a comparison of this last one with another published is done.

Domaines: Automatique

Carolina Albea-Sanchez, Carlos Canudas de Wit, Francisco Gordillo. Control and Stability Analysis for the Vdd-hopping Mechanism. MSC 2009 - CCA 2009 - 3rd IEEE Multi-conference on Systems and Control - 18th IEEE International Conference on Control Applications, Jul 2009, Saint-Petersburg, Russia. pp.320--325. ⟨hal-00399972v2⟩