A study on emerging electronics for systems accepting soft errors
2016 (English)Licentiate thesis, monograph (Other academic)
Moore’s law has until today mostly relied on shrinkage of the size of the devices inintegrated circuits. However, soon the granularity of the atoms will set a limit together with increased error probability of the devices. How can Moore’s law continue in thefuture? To overcome the increased error rate, we need to introduce redundancy. Applyingmethods from biology may be a way forward, using some of the strategies that transformsan egg into a fetus, but with electronic cells.
A redundant system is less sensitive to failing components. We define electronic clayas a massive redundancy system of interchangeable and unified subsystems. We show how a mean voter, which is simpler than a majority voter, impact a redundant systemand how optimization can be formalized to minimize the impact of failing subsystems.The performance at given yield can be estimated with a first order model, without the need for Monte-Carlo simulations. The methods are applied and verified on a redundant finite-impulse response filter.
The elementary circuit behavior of the memristor, ”the missing circuit element”, is investigated for fundamental understanding and how it can be used in applications. Different available simulation models are presented and the linear drift model is simulated with Joglekar-Wolf and Biolek window functions. Driven by a sinusoidal current, the memristor is a frequency dependent component with a cut-off frequency. The memristor can be densely packed and used in structures that both stores and compute in the same circuit, as neurons do. Surrounding circuit has to affect (write) and react (read) to the memristor with the same two terminals.
We looked at artificial neural network for pattern recognition, but also for self organization in electronic cell array. Finally we look at wireless sensor network and how such system can adopt to the environment. This is also a massive redundant clay-like system.
Future electronic systems will be massively redundant and adaptive. Moore’s law will continue, not based on shrinking device sizes, but on cheaper, numerous, unified and interchangeable subsystems.
Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2016. , 88 p.
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1745
Electronic clay, Redundant systems, Memristor, Wireless sensor networks
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-126333DOI: 10.3384/lic.diva-126333ISBN: 978-91-7685-787-8 (Print)OAI: oai:DiVA.org:liu-126333DiVA: diva2:913654
2016-04-18, Transformen, B-huset, Campus Valla, Linköping, 13:15 (Swedish)
Nilsson, Emil, Dr.
Wikner, J. Jacob, Dr.