1. State Key Lab of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510640, P.R. China
2. The Advanced Manufacturing Technology Research Centre, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
3. Faculty of Electromechanical EngineeringGuangdong University of Technology, Guangzhou 510090, P.R. China