无传感器温度辨识
sensor-less identification temperature
无机械传感器控制
mechanical sensorless control
无传感器测速
sensorless speed estimation
无色散移位的光纤
NDSF Non – Dispersion Shifted Fiber
NDSF Non C Dispersion Shifted Fiber
无传感器矢量控制
sensorless vector control
vector control without sensor
无传感器位置控制
sensorless position control
无传感器位置检测
position sensorless detection
indirect position detecting