| 发明名称 |
Sensorless BEMF measurement in current-controlled brushless motors |
| 摘要 |
A method for determining a reserve torque in an electronically-switched drive mechanism, specifically a pulse motor for a headlamp beam adjustment system, based upon a parameter in an essentially linear relationship to a back electromotive force of the drive mechanism. Whereby, for the determination of the back electromotive force-related parameter, the variation in the drive current is determined in relation to a change interval. |
| 申请公布号 |
US9484849(B2) |
申请公布日期 |
2016.11.01 |
| 申请号 |
US201514722349 |
申请日期 |
2015.05.27 |
| 申请人 |
Continental Automotive GmbH |
发明人 |
Stoeger Christian |
| 分类号 |
H02P6/18;H02P8/34;B60Q1/076;B60Q11/00;H02P29/02 |
主分类号 |
H02P6/18 |
| 代理机构 |
|
代理人 |
Greenberg Laurence A.;Stemer Werner H.;Locher Ralph E. |
| 主权项 |
1. A method for determining a reserve torque in an electronically-switched drive mechanism based upon a parameter in a generally linear relationship to a back electromotive force of the electronically-switched drive mechanism, which comprises the steps of:
determining a current variation in a drive current in relation to a change interval for determining the parameter being a back electromotive force-related parameter; determining the back electromotive force-related parameter from the change interval for a predetermined current variation; and determining the change interval by summing time measurements with a specific degree of resolution. |
| 地址 |
Hannover DE |
