摘要
为了实现大扭矩液压制动器的精确控制,首先研究了双喷嘴挡板伺服阀的结构及工作原理,建立了其力学、电磁学及流体力学的平衡方程,并根据被控负载的特性最终推导出摩擦制动器的闭环传递函数;然后,采用系统辨识的方法推导出闭环传递函数模型的结构参数,得出摩擦制动器的精确模型;最后,搭建了摩擦制动器惯性试验台架,并通过样机试验验证了模型的正确性。
The twin flapper-nozzle electro-hydraulic servo valve is analyzed in details.Moreover,the equilibrium equation of mechanics,electromagnetism and hydromechanics is built on the basis of the load characteristic.Finally,the closed loop transfer function of the friction brake is deduced.The coefficients of the established model are derived by means of system identification,and the accurate model of the friction brake is obtained.For validating the results of the proposed model,a large capacity friction brake inertia test platform is built.The static and dynamic prototype experiments are carried out and analyzed,which also proves that the high order transfer function model is highly consistent with real prototype friction brake machine.Therefore,the article lays a foundation for the proper use of large capacity friction brake in the domain of large machinery and equipment.
作者
李鹏飞
汪光森
马名中
张向明
欧阳斌
LI Peng-fei;WANG Guang-sen;MA Ming-zhong;ZHANG Xiang-ming;OUYANG Bin(National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval Univ.of Engineering,Wuhan 430033,China)
出处
《海军工程大学学报》
CAS
北大核心
2018年第6期23-29,共7页
Journal of Naval University of Engineering
基金
国家自然科学基金资助项目(51477179
51407190)
关键词
摩擦制动器
系统辨识
高阶模型
频率响应
friction brake
system identification
high order model
frequency response
