The　problem　of　high-frequency　holding　noise　caused　by　electromagnetic　switch　under　PWM　closed-loop　control　is　studied,　and　an　adaptive　control　strategy　for　electromagnetic　switch　high-frequency　holding　noise　is　proposed　in　this　paper.　Firstly,　the　mechanism　of　electromagnetic　switch　high-frequency　closed-loop　noise　is　analyzed,　and　three　measures　are　proposed　to　suppress　the　high-frequency　noise.　Secondly,　according　to　the　actual　operation　characteristics　of　electromagnetic　switch,　an　adaptive　suppression　strategy　of　electromagnetic　switch　high-frequency　holding　noise　based　on　fuzzy　control　is　designed.　By　integrating　the　advantages　of　on/off　control,　self-tuning　PID　control　and　pseudo　open-loop　control,　the　noise　suppression　measures　are　implemented.　Finally,　the　electromagnetic　switch　co-simulation　model　is　constructed,　and　the　rapid　control　prototype　verification　system　of　electromagnetic　switch　based　on　CompactRIO　is　developed.　The　frequency　domain　analysis　of　electromagnetic　switch　noise　and　vibration　signal　is　carried　out,　and　the　control　strategy　is　verified.　Simulation　and　experimental　results　show　that　the　proposed　control　strategy　can　effectively　suppress　the　high-frequency　holding　noise　of　electromagnetic　switch.　©　2022,　Electrical　Technology　Press　Co.　Ltd.　All　right　reserved.