摘要
通过测量定子每相的电压和电流值,推测出速度是实现无速度传感器矢量控制的一条途径,其中磁链的精度是速度推算的重要环节。通过构造全维状态观测器来提高转子电流和磁链的推算精度,同时使用速度自适应辩识和R s自适应辩识来进一步提高电流和磁链的推算精度,并完成速度推算,从而可以对感应电机实现高性能的矢量控制。
By measuring the voltage and current value of each phase stator to guess speed is one way to speed sensorless vector control, the accuracy rate of flux is an important part of projection. Constructing the entire dimension state observer can improve the estimation accuracy of rotor current and rotor flux, Meanwhile Adaptive Identification speed and Rs can further enhance the accuracy of current and flux, and finish the speed estimation, to realize the highperformance vector control of the induction machine.
出处
《仪表技术》
2007年第5期39-40,43,共3页
Instrumentation Technology
关键词
无速度传感器
速度推算
全维状态观测器
sensorless drives
speed estimation
the entire dimension state observer
