Evolvable hardware: from on-chip circuit synthesis to evolvablespace systems
Stoica, A.
Multiple-Valued Logic, 2000. (ISMVL 2000) Proceedings. 30th IEEE International Symposium on
Volume , Issue , 2000 Page(s):161 - 169
Digital Object Identifier 10.1109/ISMVL.2000.848615
Summary:Evolvable Hardware (EHW) refers to HW design and
self-reconfiguration using evolutionary/genetic mechanisms. The paper
presents an overview of some key concepts of EHW, comments on selected
applications, and presents a perspective on the development of the
field. A fine-grained Field Programmable Transistor Array (FPTA)
architecture for reconfigurable hardware is presented as an example of
an initial effort toward evolution-oriented devices. Evolutionary
experiments in simulations and with a FPTA chip in-the-loop demonstrate
automatic synthesis of electronic circuits. Unconventional circuits, for
which there are no textbook design guidelines, are particularly
appealing to evolvable hardware. To illustrate this situation, one
demonstrates here the evolution of circuits implementing parametrical
connectives for fuzzy logics. In addition to synthesizing circuits for
new functions, evolvable hardware can be used to preserve existing
functions and achieve fault-tolerance, determining circuit
configurations that circumvent the faults. These characteristics are
extremely important for enabling spacecraft to survive harsh
environments and to have long life. Expanding reconfiguration to other
types of spacecraft hardcore (i.e. optics, MEMS, etc.) could lead to
evolvable space systems
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