火箭游动发动机伺服控制中的摩擦阻尼特性研究  

Study on the Characteristics of Friction Damping in the Servo Control for a Rocket Vernier Engine

作　　者：孙毅[1] 李昌[1] 刘慧[1] 王剑[1] 曲颖[1] Sun Yi;Li Chang;Liu Hui;Wang Jian;Qu Ying(Beijing Institute of Precision Mechatronics and Controls,Beijing,100076)

机构地区：[1]北京精密机电控制设备研究所,北京100076

出　　处：《导弹与航天运载技术》2018年第3期69-72,共4页Missiles and Space Vehicles

基　　金：国家科技支撑计划资助项目(2015BAF32B01)

摘　　要：分析了火箭游动发动机摩擦阻尼特性对伺服控制稳定性的影响。通过伺服控制模型仿真分析,说明了等效游动发动机特性的二阶振荡环节阻尼比大小对伺服控制回路稳定裕度的显著影响。试验研究确认了某游动发动机摇摆轴摩擦力矩对稳定性的影响,得到了摩擦力矩与等效二阶环节阻尼比之间的定量关系。研究结果对于火箭游动发动机的装配力矩的量化控制和伺服机构的控制算法设计有指导意义。The effect of the friction damping characteristics of rocket vernier engines on the stability of the servo control loop is analyzed. It is showed by servo control model simulation that the stability margin was distinctly influenced by the magnitude of damping ratio of the equivalent 2 nd-order oscillation function. It is validated by experiments that the control stability was impacted by the friction torque of the gambling axle of a vernier engine. The quantitative relation between the friction torque and the equivalent damping ratio is obtained. The result has a guiding significance to quantitative control for the assembling torque and the control algorithm for the servo actuators.

关 键 词：游动发动机 摩擦 阻尼 稳定性 伺服机构 

分 类 号：V433[航空宇航科学与技术—航空宇航推进理论与工程]