1. Space Control and Inertial Technology Research Center, Harbin Institute of TechnologyHarbinHeilongjiang150001People's Republic of China
2. Department of Engineering, Faculty of Technology and ScienceUniversity of AgderN‐4898GrimstadNorway
3. Department of Mechanical EngineeringUniversity of VictoriaPO BOX 3055, STN CSCVictoriaBCV8W 3P6Canada