| 摘要 |
<p>The invention relates to a method for operating an electrical motor apparatus (1) having a microprocessor (16) an working memory (17) and an electrically commutable electrical motor (2) which has a plurality of motor phases (3,4,5) each of which are connected to an actuator (7,8 ,9) which is activated by a pulse width modulation apparatus (19) in modulation periods wherein the pulse width modulation apparatus (19) activates the respective actuator (7,8,9) during each modulation period based on a target pulse duty factor allocated to the respective motor phase (3,4,5). According to the invention the microprocessor (16) writes at least one table (27,27,27',27' ) having a plurality of successive specified pulse duty factors (26,26,26',26' ) to the working memory (17) and one of the specified pulse duty factors (26,26,26',26' ) is periodically read from the table (27,27,27',27' ) by means of a direct memory access circumventing the microprocessor (16) for each motor phase (3, 4,5) and supplied to the pulse width modulation apparatus (19) as a target pulse duty factor. The invention furthermore relates to an electrical motor apparatus (1).</p> |
