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Georgia Tech CPS and Embedded Systems Lab Projects

Security

We proposed the use of dynamic voltage and frequency scaling (DVFS) as a countermeasure for power attacks. DVFS can be used to scramble power signatures at very low cost.

      Shengqi Yang, Pallav Gupta, Marilyn Wolf, Dimitrios Serpanos, Vijaykrishnan Narayanan, and Yuan Xie, “Power analysis attack resistance engineering by dynamic voltage and frequency scaling,” ACM Transactions on Embedded Computing Systems, 11(3), September 2012.

CPS Architecture and Methodology

We used Design of Experiments (DoE) to analyze the performance of real-time software. Two factors make it difficult to use traditional worst-case execution time (WCET) analysis: algorithms with complex control flow and complex processor architectures. DoE allows us to measure the effects of interacting features. We also proposed a new performance metric for real-time software: time-to-completion.

      A. Abdallah, E. M. Feron, G. Hellestrand, P. Koopman, and M. Wolf, “Hardware/software codesign of aerospace and auitomotive systems,” Proceedings of the IEEE, 98(4), April 2010, pp. 584-602.

We discussed the challenges inherent in distributed control of jet engines.

      Medhrad Pakmehr, Manuj Dhingra, Nathan Fitzgerald and James D. Paduano, Marilyn Wolf, Eric Feron, and Alireza Behbahani, “Distributed architectures integrated with high-temperature electronics for engine monitoring and control,” in 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 31 July-3 Aug 2011, San Diego CA.

We developed a model-driven approach to the design of an irrigation system.

      Muhammad Umer Tariq, Hasan Arshad Nasir, Abubakr Muhammad and Marilyn Wolf, “Model-driven performance analysis of large scale irrigation networks,” in Proceedings, ICCPS 2012, IEEE, 2012.

Error-Aware Computation

We proposed a new, transition-based model for errors in low-voltage digital circuits. Based on that model, we proposed new approaches to error-aware image processing.

      Se Hun Kim, Saibal Mukhopadhyay, “Modeling and analysis of image dependence and its implications for energy savings in error tolerant image processing,” IEEE Transactions on CAD/ICAS, 30(8), August 2011, pp. 1163-1172.

      Se Hun Kim, Saibal Mukhopodhyay, and Marilyn Wolf, “System-level energy optimization for error-tolerant image compression,” IEEE Embedded System Letters, 2(3), September 2010, pp. 81-84.

Smart Energy Grids

We developed a new distributed architecture for the control of smart energy grids.

      Muhammad Umer Tariq, Santiago Grijalva and Marilyn Wolf, “Towards a distributed, service-oriented control infrastructure for smart grid,” in Proceedings, ICCPS ’11, 2011, ACM Press.

Last revised on September 4, 2013