三自由度弹簧质量系统的建模及性能分析  

The Modeling and Performance Analysis of the Three Degrees Spring-mass System

作　　者：左林昌 尹志宏[1] 

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500

出　　处：《新技术新工艺》2015年第10期24-27,共4页New Technology & New Process

摘　　要：基于现代控制理论、机械振动与结构振动相关理论,以无阻尼三自由度质量弹簧系统为对象。以第一牛顿定律为理论基础分析了物体的受力,从控制的角度绘制了系统的模拟结构图,反应了系统全部独立变量的变化及其相互间的关系,揭示了系统的内部特征,并分析判断了系统既能控又能观,进一步认识了系统的内在性质。采用主振型法研究了系统的动态特性,计算了系统的固有频率,主振型及位移响应。Use modern control theory, machine dynamics and structural vibration theory to study a mass spring system of three degrees. Use Newton＇s first law of the theoretical to analyze the object by force, drawn the simulation system chart from the control perspective reflecting the independent variables and their inter reveals the internal relationship between the change in the system and reveal the characteristics of the system. We also analyze and prove that the system can not only be controlled but also be observed, then understand the inherent nature of the system further. To the dynamic characteristic of the system, we use the main formation method to calculate the natural frequency, the main formation and displacement re- sponse of the system.

关 键 词：受力分析 能控能观性 状态空间 位移响应 

分 类 号：TH13[机械工程—机械制造及自动化]