The　proposed　study　introduces　a　novel　structural　design　for　the　control　system　of　permanent　magnet　synchronous　motor,　which　incorporates　an　equivalent　input　interference　estimator.　The　control　strategy　employed　by　the　controller　is　the　PI　control　method,　while　the　estimator　utilizes　a　hybrid　approach　that　combines　a　state　observer　with　a　low　pass　filter.　Under　this　framework,　both　the　controller　and　the　estimator　may　be　designed　in　a　way　that　complies　with　the　separation　principle.　The　voltage　and　current　values　that　were　obtained　on　the　stator　side　were　used　as　inputs　in　the　development　of　a　motor　speed　estimator　that　was　on　the　basis　of　an　extended　Kalman　filter　(EKF).　This　was　done　so　that　the　motor　speed　could　be　estimated　in　real　time.　The　findings　of　the　simulation　indicate　that　the　estimator　exhibits　a　high　degree　of　estimation　accuracy　across　a　broad　spectrum　of　speed.　Additionally,　the　controller　effectively　mitigates　unknown　interference　and　improve　the　performance　of　permanent　magnet　synchronous　motor.　Finally,　the　method　under　consideration　was　subjected　to　experimental　validation　on　dSPACE,　thereby　exhibiting　its　precision.　　©　2023　IEEE.