Dynamic Modeling and Simulation of Sight-stabilizing Mechanism
Sight-stabilizing system composed of mechanical devices and control system is an important subordinate system of devices loaded by a helicopter. The performances of sight-stabilizing system depend on the characteristics of kinematics and dynamics of the system in a great extent. There are various external moments acting on the rod of the manipulator, such as those moments caused by damper, positioning spring, and restoration spring. According to the structure form and motion peculiarity, the rod can be equivalent to a rigid body turning around a fix point. Through the application of the multi-rigid body system theory and Lagranges equations based on the analysis of moments and kinetic energy, a method used for the dynamics modeling and analysis of sight-stabilizing system is presented in the paper. Simulation results reveal that the moment of the restoration spring to the rod is proportional to the angular displacement, and that the moment is the most prominent factor influencing the operating performances among all these moments. Through reasonable adjustments of structural parameters of the restoration spring, the performances of the sight-stabilizing system can be improved greatly; the analysis method provides a basis for guiding the design of concerned structural parameters of sight-stabilizing system.
Sight-stabilizing Dynamics modeling damper
Hong Lin Wang Guozhang
School of Mechanical Engineering, Tianjin University of Commerce, Tianjin300134, China
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
1037-1040
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）