http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Sensorless PMSM Control with Sliding Mode Observer Based on Sigmoid Function
Ren Ningning,Fan Le,Zhang Zan 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.2
It is impossible to install or apply position sensors appropriately in some special applications of PMSM. Sensorless PMSM control is an appropriate choice to solve some problems in the control of PMSM. It is necessary to acquire an estimated position precisely and avoid the chattering phenomenon for sensorless PMSM control. This paper proposes an algorithm for estimating position with sliding mode observer (SMO) based on sigmoid function, and a suffi cient condition that leads SMO into a sliding surface is acquired using Lyapunov stabilization analysis. The outcome of this study shows that SMO based on sigmoid function for sensorless PMSM control can estimate position with high precision and avoid chattering phenomenon under the condition of diff erent velocity and load. However, the estimated position needs to be compensated for according to load, and the compensating value is in proportion to the value of the current.