Three phase motor oscillatory servo control

摘要: The rotor of a brushless DC motor is monitored continuously, and successive positions thereof are encoded in the form digital counts. count continuously converted to analog form, compared with an reference signal, determine position error, hence speed or relative desired constant reference. error differential suitably back provide power/drive amplifiers sufficient electrical drive for degree correction which must be made. from counter also coupled memory, maintains storage representations position, torque characteristics motor. Hence, based on these stored quantities upon actual parameters as exemplified by present memory issues control signals, that timing directional commands speed.