SchoolofInformationScienceandEngineering;
CentralSouthUniverfity;
ChangshaHunan;
410083;
China//Zhuz.houInstituteofTechnology;
Zhuz.houHunan412008;
China;
SchoolofInformationScienceandEngineering;
CentralSouthUniversity;
ChangshaHunan;
410083;
China;
ZhuzhouInstituteofTechnology;
ZhuzhouHunan412008;
China//DepartrnentofControlScienceandEn~neenng;
HuazhongUniversityofScienceandTechnology;
WuhanHubei430074;
China;