1. Control Science and Engineering, Research Institute of Intelligent Control and Systems, Harbin Institute of TechnologyHarbinHeilongjiang150001People's Republic of China
2. Department of Electrical and Computer Engineering, Faculty of EngineeringKing Abdulaziz UniversityPO Box 80204Jeddah21589Saudi Arabia
3. Department of MathematicsQuaid‐I‐Azam UniversityIslamabad45320Pakistan