1. Civilian, R., & Stupak, D. (1995). Disk drive employing multi-mode spindle drive system. U. S. patent 5471353, Oct 3.
2. Jang, G. H., & Kim, M. G. (2005). A bipolar-starting and unipolar-running method to drive an HDD spindle motor at high speed with large starting. IEEE Transactions on Magnetics, 41(2), 750–755.
3. Kim, T. H., & Ehsani, M. (2003). An error analysis of the sensorless position estimation for BLDC motors 3. In IEEE Conference of Industry Applications Conference, 38th IAS Annual Meeting (Vol.1, pp. 611–617).
4. Hui, T. S., et al. (2003). Permanent Magnet Brushless motor control techniques. In National Power and Energy Conference (PECon) 2003 Proceeding. Bangi Malaysia.
5. Bianchi, N., et al. (2006). Comparison of PM motor structure and sensor less control techniques for zero-speed rotor position detection. IEEE Transaction on Power Electronics, 22(6), 2466–2475.