Before revision: From this consideration many errors from classical digital control were identified and solved and new methods were proposed: Marcelo Tredinnick and Marcelo Souza and their new type of analog-digital URL Yutaka Yamamoto and his "lifting function space URL Alexander Sesekin and his studies about impulsive systems.
After revision: From this consideration many errors from classical digital control were identified and solved and new methods were proposed: Marcelo Tredinnick and Marcelo Souza and their new type of analog-digital model" Yutaka Yamamoto and his "lifting function space URL Alexander Sesekin and his studies about impulsive systems.