The　basis　of　intelligent　control　of　contactor　is　mostly　realized　by　DC　control　and　high-frequency　PWM　control.　In　order　to　further　optimize　the　control　algorithm　for　problems　such　as　bounce　and　contact　arc,　parameter　identification　of　electromagnetic　mechanism　is　essential,　and　parameter　mismatch　directly　affects　the　control　accuracy　of　the　algorithm.　Based　on　the　control　rate　accelerator　CLA　(Control　Law　Accelerator)　module　of　digital　signal　processor　DSP　chip　TMS320F28069,　the　parameters　of　electromagnetic　mechanism　controlled　by　intelligent　closed-loop　control　algorithm　of　contactor　are　identified　in　real　time,　which　greatly　reduces　the　calculation　burden　of　the　chip　under　high　frequency　control.　The　identification　results　are　output　through　SPI　protocol　and　DAC　module,　which　verifies　the　effectiveness　of　the　parameter　identification　system.　©　2024　IEEE.