Unknown input observer for a novel sensorless drive of brushless DC motors

被引：0

作者：

Kim, TS ^{[1
]}

Ryu, JS

Hyun, DS

机构：

[1] Hanyang Univ, Dept Elect Engn, 17,Haengdangdong, Seoul 133791, South Korea

[2] Hanyang Univ, Dept Elect Engn, 17,Haengdangdong, Seoul 133791, South Korea

[3] Hanyang Univ, Dept Elect Engn, 17,Haengdangdong, Seoul 133791, South Korea

来源：

APEC 2006: TWENTY-FIRST ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, VOLS 1-3 | 2006年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a novel motor control method is proposed to improve the performance of sensorless drive of BLDC motors. In the terminal voltage sensing method, which is a great portion of sensorless control, a precise rotor position cannot be obtained when excessive input is applied to the drive during synchronous operation mode. Especially in the transient state, the response characteristic decreases. To cope with this problem, the unknown input (back-EMF) is modelled as the additional state of system in this paper. Taking into account the disturbance adopted by the back-EMF, the observer can be obtained by an equation of the augmented system. An algorithm to detect the back-EMF of a BLDC motor using the state observer is constructed. As a result, a novel sensorless drive of BLDC motors that can strictly estimate rotor position and speed is proposed.

引用

页码：679 / 684

页数：6

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