21-06-2018 дата публикации
Номер: US20180175753A1
Принадлежит:
An actuating apparatus for a polyphase motor includes five phase terminals for connecting of in each case one phase of the polyphase motor, a high terminal for applying a supply voltage (U), a low terminal for applying a reference potential of the supply voltage (U), a control device, wherein the control device is adapted, in four of the five phase terminals, to impress a pulse-width-modulated voltage pattern by connecting the phase terminals to the high terminal or the low terminal so that in the first phase terminal, an evaluation signal which is dependent on the angle of rotation of the polyphase motor is produced, and wherein the control device is adapted to determine the angle of rotation and/or a commutation condition of the polyphase motor from the evaluation signal. 1. An actuating apparatus for a polyphase motor , comprising:five phase terminals for connecting in each case a phase of the polyphase motor;{'sub': 'B', 'a high terminal for applying a supply voltage (U);'}{'sub': 'B', 'a low terminal for applying a reference potential of the supply voltage (U);'}a control device;wherein the control device is adapted, in four of the five phase terminals, to impress a pulse-width-modulated voltage pattern by connecting the phase terminals to the high terminal or the low terminal so that in the first phase terminal, an evaluation signal which is dependent on the angle of rotation of the polyphase motor is produced; andwherein the control device is adapted to determine the angle of rotation and/or a commutation condition of the polyphase motor from the evaluation signal.2. The actuating apparatus according to claim 1 , further comprising a plurality of bridge branches claim 1 , wherein each bridge branch is connected to precisely one of the five phase terminals in order to impress the pulse-width-modulated voltage pattern in the four of the five phase terminals.3. The actuating apparatus according to claim 2 , wherein each of the bridge branches comprises a series ...
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