EMI analysis and improvement of fuel quantity indication system on board

摘要

Fuel quantity indication system (FQIS) is one of the most sensitive electronic equipments, and it has seriously affects aircrafts' tasks, such as flight control, air combat, navigation and command, etc. According to the EMC problems of FQIS, the paper analyses how FQIS works in details, finds out the reasons about EMC problems. Some improvement measures of Anti-interference are also presented and verified with hardware in the loop simulation (HILS).