1. Shi, h.: Synchronous Control for Electric Drives with Several Units. Journal of Southern Yangtze University 2(4), 371–373 (2003)
2. Wang, g.: Study on strategy of multi-motor synchronization control based on Fuzzy PID compensator, Dissertation, pp. 1–48. Northeastern University (2006)
3. Song, h.: Analysis of Tuning of PID parameters. Modern Measuring Instruments and Techniques 1l, 56–80 (2003)
4. Yu, l.: Base on Fuzzy of Synchronic Control of Multi-motor Drivers. Industrial Control Computer, 51–53 (January 2001)
5. Long, y.: Design of fuzzy controller based on PLC. Micro-Computer Information 22(1), 21–23 (2006)