1Depenbrock M. Direct - self control of inverter - fed induction machine [ J ]. Power Electron, 1988,13 (4) :420 - 429.
2Cheng Zhicao, Bo Zhou, Min Li, Jing Du. Digital Implementation of DTC Based on PSO for Induction Motors [ C ]. Proceed- ings of the 6th World Congress on Intelligent Control and Automation, 2006.
3Schauder Colin. Adaptive speed identification for vector control of induction motors without Rotational transducers [ J]. IEEE Trans. On Industry Applications, 1992,28 (5) : 1054 - 1061.
4Shyhjier Huang. Sensor less speed identification of vector - controlled induction drives via neural network based estimation [ J ]. Elsevier Electric Power Systems Research, 1998,48 : 1 - 10.
