一种新型三轴加速度过载模拟系统  

A New 3-Axial Acceleration Overload Simulation System

作　　者：欧峰[1] 陈洪[1] 陈胜来[1] OU Feng CHEN Hong CHEN Shenglai(Institute of Systems Mechanics, China Academy of Engineering Physics, Mianyang 621900 ,China)

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《自动化仪表》2017年第3期5-8,共4页Process Automation Instrumentation

基　　金：国防科技工业局技术基础基金资助项目(JSHS2014212B001)

摘　　要：针对飞行过程中飞行器机体承受的轴向、法向、切向三个方向的加速度过载存在耦合性强、变化速率快、模拟难度大的特点,提出了一种以离心机为平台的三轴加速度过载同步模拟系统。给出了飞行器坐标系和飞行器三轴加速度过载的定义,介绍了该模拟系统的整体结构和模拟过程的具体实现方法,分析了三轴加速度过载投影原理和三轴加速度解耦控制算法,建立了基于Pro/Engineer和MATLAB的三轴加速度过载模拟系统的机构运动模型,实现了联合仿真。仿真结果表明,该系统可有效模拟飞行器飞行过程中三轴加速度过载的同步变化,同步性好、精度高、实时性强。该系统可以作为飞行器或机载设备的地面环境试验测试平台,有助于科研人员及时发现结构设计中的缺陷,从而改善飞行器的性能,具有重要的科研意义和广阔的应用前景。During flight of aircraft,the body of aircraft withstands the acceleration overload from three directions, i. e. , the axial acceleration, the normal acceleration, and the tangential acceleration;while these acceleration overloads are coupling strongly, and changing quickly, thus they are difficult to be simulated. Aiming at these features, a new 3 - axial acceleration overload synchronous simulator with the centrifuge as the plafformis proposed. The coordinate system of the aircraft and the definition of 3 - axial acceleration overload for the aircraftare given. The overall structure of the simulator and the specific implementing method of the simulation process are introduced ; the projection principle of 3 - axial acceleration overload and the decoupling control arithmetic are analyzed;the mechanics motion model of the 3 - axial acceleration overload simulation system is setup based on Pro/Engineer and MATLAB, thus combined simulation is realized. The results of simulation show that the system is good for effective simulating the synchronous variation of 3 - axial acceleration overload, it features high synchronization, high precision and high real - time performance. The system can be used as a ground environment test platform for aircraft or airborne equipment ;it helps the researchers to find out the design disfigurement on structure, and improves the aircraft performance, and has great scientific significance and broad application prospects.

关 键 词：离心机 电机 可靠性 加速度 耦合效应 

分 类 号：TH39[机械工程—机械制造及自动化]