METHOD FOR CONTROLLING AN ELECTRONICALLY COMMUTATED POLYPHASE DC MOTOR

摘要

The invention relates to a method for controlling an electronically commutated polyphase DC motor (BLDC motor) (1) with a pole number = 2 and with a winding system (2) having a plurality of winding phases, in particular three winding phases, comprising a rotor, a stator and a position sensor (3) detecting the position of the rotor and a logic circuit (10) for generating the phase voltages of the winding system (2) depending on the electrical phase angle of the rotor. According to the invention, provision is made for the logic circuit (10) to have a storage means (11) with a lookup table, in which the associated drive values depending on the electrical phase angle of the rotor for generating phase voltages (VU, VV, VW) for the winding system (2) are stored so as to implement commutation with block-shaped, trapezoidal, sinusoidal or sine-based signal forms or with signal forms which are suitable for commutation, a control unit (30) for producing configuration data for the logic circuit (10) is provided, wherein the configuration data determine at least the commutation form and, depending on the determined commutation form, the associated drive values depending on the electrical phase angle of the rotor determined by means of the quadrature sensor (3) are supplied from the storage means (11) to a PWM generator (15) for generating PWM control signals (VU, VV, VW), with which the phase currents in the winding system (2) can be controlled. In addition, an apparatus for implementing the method according to the invention is provided.