Repair of analog circuits: extrinsic and intrinsic evolutionary techniques

This paper proposes evolutionary techniques to repair and adapt analog circuits. Such class of techniques is suitable for systems that need to perform for a long time in harsh environments such as those employed in space exploration missions and for situations in which sending a technician would not be possible. As each evolution's objective has a different influence and importance in the resulting repaired circuit, it is necessary to distinguish their importance's weight during the evaluation of the circuits. The methods proposed are for extrinsic and intrinsic evolutionary repair.