1. T Stone Robotics Institute,The Chinese University of Hong Kong,Department of Mechanical and Automation Engineering,Hong Kong
2. Shanghai Jiao Tong University,Department of Automation,China
3. University of Cambridge,Department of Computer Science and Technology,United Kingdom
4. Carnegie Mellon University
5. Insititue of Medical Robotics, Key Laboratory of System Control and Information Processing of Ministry of Education, Key Laboratory of Marine Intelligent Equipment and System of Ministry of Education, Shanghai Jiao Tong University,Department of Automation,Shanghai,China,200240