Submitted on: 12 November 1999.
Revised on: 05 January 2000.
Accepted on: 15 February 2000.
___________________IEEE Industrial Electronics Magazine
Submitted on: 14 August 2023.
Revised on: 14 October 2023.
Accepted on: 13 November 2023.
___________________IEEE Industrial Electronics Magazine
Submitted on: 26 December 2002.
Revised on: 20 March 2003.
Accepted on: 12 April 2003.
___________________IEEE Industrial Electronics Magazine
http://reply.papertrans.cn/2/118/11783/11783-34.png
http://reply.papertrans.cn/2/118/11783/11783-35.png
http://reply.papertrans.cn/2/118/11783/11783-36.png