An　improved　control　strategy　combining　feedforward　control　and　deadbeat　control　is　adopted　to　solve　the　problem　of　steady-state　error　and　severe　chattering　caused　by　parameter　perturbation　in　the　deadbeat　current　predictive　control　system　of　permanent　magnet　synchronous　motor　(PMSM)　and　to　reduce　the　current　and　torque　pulsation　caused　by　parameter　perturbation.　A　fast　dynamical　response　strategy　combining　sliding-mode　disturbance　observer　and　fractional　integral　compensation　is　proposed　to　solve　the　problem　of　steady-state　error　increasing　caused　by　introducing　ordinary　feed-forward　control　strategy.　The　second-order　sliding　mode　approach　law　based　on　the　sgn　function　is　adopted　to　the　sliding　mode　surface　of　the　observer　to　further　suppress　the　interference　terms　except　for　the　parameter　disturbance.　The　traditional　deadbeat　current　predictive　control　model,　the　improved　current　predictive　model　with　the　common　feedforward　control　strategy,　and　the　improved　prediction　model　with　the　sliding　mode　disturbance　observer　in　the　feedforward　path　and　the　fractional　order　integral　compensation　strategy　are　simulated　and　compared.　Simulation　results　show　that　the　effectiveness　of　the　proposed　model　in　eliminating　the　steady-state　error　caused　by　parameter　disturbances　and　in　reducing　the　current　pulsation　is　verified　under　various　working　conditions,　and　both　the　robustness　and　the　dynamic　performance　of　the　PMSM　speed　regulation　system　are　effectively　improved.　©　2021,　Editorial　Office　of　Journal　of　Xi＇an　Jiaotong　University.　All　right　reserved.