Commonly used dc motor are: the permanent magnet dc motor controller,Slotted, slotless, cup type, printing winding), dc motor controller, the hybrid excitation type brushless dc motor controller, dc motor controller, dc torque motor controller, dc: feed servo system of permanent magnet dc motor controller type slotted armature of permanent magnet dc motor controller,Ordinary)。 Spindle servo motor controller: dc excitation type dc motor controller type separately excited dc motor controller in the performance magnetis permanentis dc servo motoris moderatoris: 1. Inertia magna 2. Torque magna 3. Satus torques 4. Magnae celeritatis cursus, operatio stabilis in celeritate humili, volutatio torques parvae dc servo motoris vitiorum moderatoris: 1. Peniculum et commutatorem facile gerunt. 2. Motor moderatoris limitis celeritatis summae, limitis 3 applicationis ambitus. Complicata structura, difficultas fabricandi et sumptus magnos
