PMSM-ball　screw　actuator　used　in　active　suspensions　has　a　promise　of　high　energy　efficiency,　large　transmission　ratio,　and　compact　structure;　however,　the　nonlinear　damping　and　the　overlarge　equivalent　inertial　mass　of　the　actuator　have　impeded　development　of　the　active　suspension.　In　this　study,　a　dual　vibration　reduction　structure　according　to　the　stiffness　and　the　damping　enhancement　is　proposed　to　configure　a　self-powered　featured　active　suspension.　First,　mechanics　and　energy　regeneration　of　the　proposed　actuator　are　tested　based　on　the　varying　charge　voltage　method.　Subsequently,　the　dual　vibration　reduction　structure　is　developed　by　adding　the　extra　spring　and　damper　between　the　unsprung　mass　and　the　conventional　vibration　reduction　device.　To　regulate　the　proposed　active　suspension　system,　an　improved　H-2/H-infinity　is　developed　based　on　a　new　soft　constraint　involved　objective　function　to　generate　the　applicable　ideal　active　force　via　feedforward　and　feedback　linearization　modeling.　Moreover,　the　dual　vibration　reduction　structure　is　optimized　through　genetic　algorithms　according　to　the　novel　fitness　function.　Finally,　the　comparisons　are　carried　out　by　evaluating　the　proposed　active　suspension,　the　ideal　active　suspension　and　the　passive　suspension.　The　results　demonstrate　that　the　proposed　active　suspension　regulated　by　the　improved　H-2/H-infinity　control　is　self-powered　to　achieve　a　near-ideal　performance.　(C)　2020　Elsevier　Ltd.　All　rights　reserved.