This　paper　designs　an　intelligent　control　module　with　STM32F103　microcontroller　as　the　core,　aiming　at　the　400A　unipolar　electromagnetic　switch　developed　by　our　research　team.　This　module　has　realized　the　joint　optimization　of　bounce　suppression　of　the　closing　process,　adaptive　adjustment　of　closing　time,　collaborative　optimization　of　the　holding　process　reliability　and　energy-saving　operation.　Firstly,　the　step　control　strategy　is　adopted　to　effectively　shorten　the　contact　bounce　time.　Secondly,　the　dynamic　iron　displacement　observer　is　constructed　to　successfully　realize　the　adaptive　switching　of　closing　and　holding　processes.　In　addition,　a　collaborative　optimization　strategy　based　on　the　change　of　current　slope　is　proposed　for　the　characteristic　difference　of　different　reaction　spring.　This　strategy　optimizes　the　electromagnetic　suction　force　by　automatically　adjusting　the　holding　current,　realizing　reliable　and　energy-saving　operation.　Experimental　verification　confirms　the　effectiveness　of　bounce　suppression　and　collaborative　optimization　strategies.