？？BAYLE B, FOURQUET J Y, RENAUD M. Kinematic modelling of wheeled mobile manipulators[A].Proceedings of the 2003 IEEE International Conference on Robotics & Automation[C].Taipei, Taiwan:IEEE,2003.69-74.
[2]
？？YOO W S, KIM J D, NA S J. A study on a mobile platform-manipulator welding system for horizontal fillet joints[J].Journal of Mechatronics,2001,11(7)：853-868.
[3]
？？SHIN D H, HAMNER B S, SINGH S, et al. Motion planning for a mobile manipulator with imprecise locomotion[A].Proceedings of 2003 IEEE/RSJ Intl.Conference on Intelligent Robots and Systems[C].Las Vegas,NV,USA：Omni Press, 2003.847-853.
[4]
？？REEDS J A, SHEPP R A.Optimal paths for a car that goes both forward and backwards[J].Pacific Journal of Mathematics, 1990,145(2)：367-393.
[5]
？？MOHRI A, FURUNO S, IWAMURA M, et al. Sub-optimal traje ctory planning of mobile manipulator[A].Prceedings of the 2001 IEEE International conference on robotics & automation[C].Seoul, Korea： Kyung Hee Information Printing Co. Ltd., 2001.1271-1276.
[6]
？？PAPADOPOULOS E, POULAKAKIS I, PAPADIMITRIOU I. On path planning and obstacle avoidance for nonholonomic platforms with manipulators： a polynomial approach [J].International Journal of Robotics Research, 2002, 21(4)： 367-383.
[7]
？？KAVRAKI L E. Probabilistic roadmaps for path planning in high-dimensinal configuration spaces[J].IEEE Transactions on Robotics and Automation, 1996,12(4)： 556-580.
[8]
？？SONG G,AMATO N M.Randomized motion planning for car-like robots with C-PRM[A].Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems[C].Maui,HI,USA:IEEE, 2001.37-42.
