Formal Design and Verification of N-M Switching Control System
  Production factories in which stable voltage is critical, e.g., electro-plating factory, require constantly stable voltage to minimize loss by adjusting incoming voltage in real time, even if low-quality electricity is supplied from outside. To solve such problem often being raised from the factories located in the area with unstable electricity supply, we designed N-M switching control system and verified its correctness using LTL model checking technique. 
Changil Choe, Hyejong Hong, Kukhwan Kim
cs.LO