限束器 meaning in English
beam defining clipper
Examples
- X - ray collimator subsystem is the important part of x - ray machine , and its main function is confine the scope of x - ray beam , to reduce the radiation harm to patients ; another function is realizing the multi - scope exposure on one film working with the film motion and shielding system
X光机限束器子系统作为x光机的重要组成部分,其主要用于对x光束的照射范围进行限定,以减少对患者的辐射,以及配合点片系统实现对x光胶片的多分片功能。 - Firstly , we compared the domestic with the foreign products , analyzed the advantages and disadvantages of existing domestic products ; to reduce patients ray radiation , facilitate the operation and enhance the level of automation , at the same time , considering the goal of the sets , we made function goal of collimator subsystem
首先,在对比国内外产品的的基础上,对国内的现有产品的优缺点进行了分析,结合整机的设计目标,以减少对患者的辐射、便于医护人员操作和提高自动化水平为目标,确定了限束器子系统的功能目标。 - The control of beam halo - chaos becomes a critical problem in the development of high intensity accelerator . efforts to remove the halo by collimation have been largely unsuccessful since the halos almost always regenerate . the mechanisms of halos are complex , such as nonlinear resonances and chaotic behavior etc . considering this , professor fang jin - qing who works in china institute of atomic energy pointed out that the theory of chaos control can be used to control beam halos . he presented the method to control halos by using nonlinear functions , which means nonlinear function g is added to the right of ion radial self - edlctric force equation and some nonlinear function are selected to control beam halos in simulations . in paper [ 69 ] , controllerg = - 0 . 15sin ( rmax - am ) 2 was used and the halo intensity was decreased to 0 . 1078 , the halos are removed partly
束晕?混沌的控制是新一代强流加速器研制的关键问题，随着强流离子束应用前景的日趋广阔而日益成为研究的热点。传统机械限束器因无法解决束晕的再生而收效甚微，因为束晕的形成有着其内在动力学机制?非线性共振以及混沌等。基于此，中国原子能科学院研究员方锦清将混沌控制的理论和方法开创性的运用于束晕?混沌的控制上，提出了控制束晕?混沌的非线性控制策略，即在粒子径向所受束自生场力方程的右边加上非线性控制函数g ：并选取一些非线性函数如等进行了控制的模拟研究，将束晕强度控制在0 . 1078左右，取得了初步的控制效果。 - A micro - controller based on 89c52 and lm629 , lmd18200 is presented in the paper . with the help of the motion controller it not only simplifies the design of the hardware and the software of the control system but also enhances its reliability and performance . it is help to shorten responsive time , upgrade precision , and easy to realize automation and digital control
给出了以89c52为核心,辅以lm629 、 lmd18200等芯片构成的限束器运动控制子系统,不仅简化了子系统软硬件设计,提高了系统可靠性,减轻了设计工作量,而且提高了子系统性能,使得控制系统反应快,控制精度高,容易实现自动化、数字化控制。