 |
|
|
|
ABTASTAUSLÖSEVERFAHREN, MIKROPROZESSOR, MOTORREGLER UND ELEKTRISCHES FAHRZEUG
| Patentnummer: | EP3937366B1 |
|---|
| IPC Hauptklasse: | G01D5/20 |
|---|
| Anmelder: | HUAWEI DIGITAL POWER TECH CO LTD (1)
HUAWEI TECH CO LTD (1) |
|---|
| Erfinder: | KONG XUEJUAN (1)
LIU YING (1)
ZOU LIXIA (1) |
|---|
| Anmeldung: | 28.05.20 |
|---|
| Patenterteilung: | 22.02.23 |
|---|
| Einspruch bis: | 22.11.23 |
|---|
Abstract / Hauptanspruch |
| This application relates to a motor controller applied to an electric vehicle, a microprocessor in the motor controller, and a sampling trigger method applied to the microprocessor. The microprocessor is connected to a drive motor by using a resolver, and is configured to sample a resolver feedback signal that is of an electrical angle of the drive motor and that is output by the resolver. The sampling trigger method includes: a signal generation module generates an exciting fundamental wave signal to drive the resolver to work; a signal processing module determines an exciting symbol based on the exciting fundamental wave signal, where the exciting symbol includes alternate high-level signals and low-level signals, and the signal processing module further determines a zero crossing point signal of the exciting fundamental wave signal based on the exciting symbol; and a phase shift processing module performs phase shift processing on the zero crossing point signal to obtain a sampling trigger signal, to trigger the microprocessor to sample the resolver feedback signal. In this solution, fewer peripheral circuits of a chip are used, thereby saving an area of a printed circuit board and improving a product integration degree. |
|
Kommentare zu diesem Patent schicken Sie bitte an 
|
|
