Brushless dc motor controll is composed of the main body of the motor and drive, it is a kind of synchronous motor controller, rotor speed of motor controller that is motor controller speed rotating campus magneticus statoris et polus rotor (P) Oportet omnes parametros principales de fabrica moderatoris, non admodum intelligendi, sequentia contenta singillatim exponere vult. 1, initus intentionis: una pars vel tres gradus ac 220 v ac 380 v + 10%; 2, in output campi currentis: 2 a, 5 a (10A 20A…); 3, rotor clausus valoris currentis: 1. 3 times current aestimatus; 4, in output current aestimatus: armatura 25 a, 50 a, Plus quam 5, intellegere potest signum analogicum input, moderatoris motoris, coniunctio cum PLC, 6, output voltage: dc armatura 0 -110 v vel 0220 v vel 440 v, differentiatio 110 v vel 440 v, differentiatio 110 v vel 440 v; control of the Brushless dc motor controller: Cum ratio erroris eiusque mutationis semper tardus est superare quam erroris mutationis, magna inertia ratio componentis est vel (Et)Sunt lag component.