摘要
实现高指向精度是单级控制指向系统的主要技术难题,消除指向机构的位置浮动环节可提高其指向精度,为此提出一种单级控制的高精度指向系统。采用一种无位置浮动环节的RPS-SPS并联指向机构,通过研究其传动模型和误差消除算法,验证所提指向系统原理的正确性,进行了原型机研制和实验测试。测试结果表明:在加载和空载两种状态下,原型机的单轴指向误差均不大于0.004°,其合成指向误差均优于0.006°,其指向稳定时间均小于100 ms,原型机具备了两轴的指向功能,其工作空间可达到两轴±9°。理论和实验研究均证明了该指向系统的可行性和有效性,研究成果为该单级控制的高精度指向系统的工程应用奠定了技术基础。
Achieving high-pointing accuracy is a primary technical challenge for a single-stage control pointing system.Eliminating the position-floating link of the pointing mechanism can significantly enhance pointing accuracy.A pointing system is proposed in the paper,which uses an RPS-SPS parallel mechanism without the floating position.The transmission theory and error elimination algorithm of this pointing mechanism validate its efficacy.A prototype is built and tested,and the test results show that the uniaxial error of the prototype is not greater than 0.004°,the synthetic pointing error is not greater than 0.006°,and the stability time is not greater than 100 ms both under loaded and no-loaded conditions.The prototype has the pointing function in two axes,with a working space of±9°in both axes.The theoretical model and test results confirm the feasibility and effectiveness of the system.The research lays a foundation for the engineering application of a high-precision pointing system with single-stage control.
作者
杜永刚
王雪松
王禺林
DU Yonggang;WANG Xuesong;WANG Yuling(Lanzhou Institute of Physics,China Academy of Space Technology,Lanzhou 730000,Gansu,China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2023年第8期2477-2485,共9页
Acta Armamentarii
关键词
指向系统
高精度
单级控制
并联机构
误差消除
pointing system
high-precision
single-stage control
parallel mechanism
error elimination
