基于机电伺服系统动结合部的刚度特性解析建模研究  

Research on Analytical Modeling of Stiffness Characteristics Based on Dynamic Joint of Electromechanical Servo Syste

作　　者：马雷 李宝玉[1] 师娇[1] 冷德新[1] 裘群海 MA Lei;LI Baoyu;SHI Jiao;LENG Dexin;QIU Qunhai(China Academy of Launch Vehicle Technology,Beijing 100076)

机构地区：[1]中国运载火箭技术研究院,北京100076

出　　处：《现代制造技术与装备》2020年第8期105-108,共4页Modern Manufacturing Technology and Equipment

摘　　要：机电伺服系统在航天应用中已初具规模,航天装备的特殊性决定了航天机电伺服系统对其体积、重量、可靠性、环境适应性的要求极为严苛,客观上对机电伺服技术发展提出了更高要求。在航天机电伺服系统研制的工程实践中,产生了具有自身鲜明特点的分析、设计理论和方法,推动着机电伺服技术的发展。其中,机电伺服系统的动态特性对伺服系统本身及飞行器的控制精度和振动等特性具有重要影响。针对机电伺服系统理论建模中结合部刚度难以确定的问题,以典型机电伺服系统结构为研究对象,根据机电伺服系统结合部的特点,提出基于Hertz接触理论的伺服系统动结合部刚度计算方法。所提方法为机电伺服系统动结合部刚度的识别提供了参考,研究结论可为机电伺服系统的改进设计和动态性能优化提供依据。The electromechanical servo system has begun to take shape in aerospace applications.The particularity of aerospace equipment determines that the aerospace electromechanical servo system has extremely strict requirements on its volume,weight,reliability,and environmental adaptability.Objectively,it has proposed more changes in the development of electromechanical servo technology.In the engineering practice of the research and development of aerospace electromechanical servo system,a series of analysis,design theories and methods with distinct characteristics have been produced,which promote the development of electromechanical servo technology[1].The dynamic characteristics of the electromechanical servo system have an important influence on the servo system itself and the control accuracy and vibration characteristics of the aircraft.In view of the problem that the joint stiffness is difficult to be determined in the theoretical modeling of electromechanical servo system,taking the typical structure of electromechanical servo system as the research object,according to the characteristics of the joint of electromechanical servo system,a method for calculating the dynamic joint stiffness of servo system based on Hertz contact theory is proposed.The proposed method provides a reference for the identification of the dynamic joint stiffness of the electromechanical servo system,and the research conclusion provides a basis for the improvement design and dynamic performance optimization of the electromechanical servo system.

关 键 词：机电伺服系统 动结合部 刚度特性 HERTZ接触理论 

分 类 号：V44[航空宇航科学与技术—飞行器设计]