The amplitude and phase is estimated respectively through a doubleintegrator close-loop, in stead of vector of flux, with angular and speed as feedback.
此方案以估计出的位置角为反馈量，采用闭环双积分结构，分别估计了定子磁链的幅值和相位。
2
The stability of the system is analyzed by small-signal, the results shows that the doubleintegrator close-loop is a Phase-Locked-Loop (PLL) essentially.
采用小信号的方法对其稳定性进行分析。分析结果表明这种结构本质上具有锁相环的功能。
3
Based on the doubleintegrator model, a control strategy is designed by using potential function which is proposed from the perspective of electric potential.