Nonlinear dynamics and bifurcation control of underwater supercavitating vehicles

摘要：

　　Numerical investigations and analytical into the dynamics and control of supercavitating vehicles are presented.A four-dimensional dynamic model for supercavitating vehicles is studied.Dominant nonlinearities of this system is due to the planing force acting on the vehicle.The ranges of control law and cavitation number for the stable motion are determined by distribution diagram of stable equilibrium points.The bifurcation analysis with variable control laws is conducted.Which indicates that the motion of supercavitating vehicles is found to have complex nonlinear physical phenomena,such as Hopf bifurcation, periodic window and chaos.And the use of bifurcation control to suppress or delay the onsets of Hopf bifurcation is presented.The robustness and stability of underwater supercavitating vehicles can be improved by adjusting the control law reasonably.

关键词： Supercavitating vehicles Nonlinear dynamics Bifurcation control Control law

作者: Yi-pin LV Tian-hong XIONG Wen-jun YI Kang-jian WANG

作者单位: National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu, China

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 639-643

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）