直流电动机起动 ..............\psbdcmotor.mdl ..............\sepdcmotor.mdl ..............\serdcmotor.mdl ..............\shuntdcmotor.mdl ..............\直接起动 ..............\........\sepdcmotor.mdl ..............\........\seriesdcmotor.mdl ..............\........\shuntdcmotor.mdl ..............\降压软起动 ..............\..........\sepdcmotor.mdl ..............\..........\seriesdcmotor.mdl ..............\..........\shunddcmotor.mdl