METHOD FOR OPERATING AN ELECTRONICALLY COMMUTATED ELECTRIC MOTOR

The invention relates to a method for operating an electronically commutated electric motor (10), in which method, during ongoing operation of the electric motor (10), in order to achieve an optimal operating point of the electric motor (10), a pre-commutation angle (14) provided by a control device (12) is regulated. According to the invention, during an operation of the electric motor (10), a period signal (16) is modulated to the pre-commutation angle (14) and a state parameter (18) of the electric motor (10) correlating with an efficiency of the electric motor (10) is detected. 本发明涉及一种用于运行电子换向的电动机（10）的方法，其中，在所述电动机（10）的持续运行期间，为了达到所述电动机（10）的最佳运行点，对由调节装置（12）提供的预换向角度（14）进行调节。提出，在所述电动机（10）的运行期间，将周期性信号（16）调制到所述预换向角度（14）上并且检测所述电动机（10）的与该电动机（10）的效率相关的状态特征参量（18）。