The　process　of　electromagnetic　contactor　actuation　was　studied,　aiming　to　improve　the　actuation　reliability　of　electromagnetic　contactors　in　different　working　environment　and　full　life　cycle　through　control　algorithm,　and　avoid　the　complex　physical　modeling　process　of　contactor.　Firstly,　under　the　current　closed-loop　control　concept,　the　time-lag　effect　of　contact　motion　in　the　actuation　process　of　electromagnetic　contactor　was　analyzed,　and　the　current　closed-loop　control　sequence　of　the　actuation　process,　which　takes　into　account　both　quick　actuation　and　bounce　suppression,　was　designed.　Then,　the　characteristics　of　the　electromagnetic　contactor　under　the　actual　working　conditions　were　studied　to　find　the　direct　relationship　between　coil　current　and　operating　time,　and　the　model-free　adaptive　control　(MFAC)　scheme　was　introduced　for　the　first　time　to　realize　the　real-time　and　online　optimization　of　the　actuation　process　of　the　electromagnetic　mechanism　and　suppress　the　dispersive　action.　The　control　strategy　does　not　depend　on　any　structural　parameters　of　the　controlled　object.　It　does　not　need　to　establish　a　physical　model　of　the　contact　instrument　or　add　sensors　in　advance.　It　only　optimizes　the　control　strategy　of　the　actuation　process　of　the　electromagnetic　mechanism　based　on　online　data　in　real　time,　which　can　intelligently　and　rapidly　adapt　to　the　change　of　the　external　working　environment　and　wear　and　tear　of　the　switch＇s　own　mechanical　structure.　The　rapid　control　prototype　system　based　on　FPGA　was　built　to　verify　the　actual　effect　of　the　control　strategy.　The　control　strategy　can　effectively　suppress　the　contact　bounce　and　actuation　time　dispersity　of　different　types　of　electromagnetic　contactors　under　different　input　voltage,　which　is　of　general　significance　to　improve　the　performance　of　electromagnetic　switch　actuation.　©　2020　Chin.　Soc.　for　Elec.　Eng.