balloon frame

balloon frame的基本解释

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轻捷型构架

与balloon frame相关的网络例句 [注：此内容来源于网络，仅供参考]

During hollow spindle spinning, the yarn package rotates at a high speed, yarn untwists from the package and forms a balloon. The yarn balloon phenomenon exists commonly in spinning processes. The shape of yarn balloon is a general displacement of the forces acts on the balloon yarn. There is a close relationship between the yarn balloon shape and the forces acts on the balloon. The balloon shape is decided by the spinning force, on the contrary, we can find the value of the spinning force according to the yarn balloon shape. To a great extent, the spinning tension impacts the yarn structure and quality.

空心锭子纺纱过程中，纱线卷装随锭子高速转动并退绕，因而产生了气圈现象，气圈是纺纱过程中比较普遍的现象，气圈的形态是纺纱过程中气圈纱线受力的综合体现，纱线张力与气圈形态密切相关，纱线张力决定了气圈形态，反之则可根据气圈形态算出纱线张力，纺纱张力在很大程度上会影响成纱的结构和质量，而纺纱张力不便直接测量，因此通过观察气圈形态来估计纺纱张力是十分可行的。

The main jobs of this paper are as followed: 1 The reuse of the frame design technology for aircraft assembly fixtures is researched. a frame line part library is built with the templet driven technology, the reuse of the frame line part come true by the tools for instantiation and instance modification. The design resources are effectively used, some repeating work is cut. 2 Two methods to obtain the assembly feature are proposed: the straight way by the Enumeration method and the indirect way by project features to the assembly plane. All of the assembly features of the frame and the adjustable bearings are obtained by these two methods which makes the frame automatic assembly technology for aircraft assembly fixtures come true. 3 The frame automatic assembly technology aircraft assembly fixtures based on assembly features is researched. A binary tree assembly model is used to express the assembly information of the frame for aircraft assembly fixtures, the automatic assembly between the frame, the aircraft and the adjustable bearing is completed within the three steps: distribute, obtain and evaluate assembly feature. Finally, the efficiency of the frame assembly design is proved. 4The frame interpart modeling technology for aircraft assembly fixtures is researched, the intersection methods are concluded and the arithmetic of the single-cut, double-cut and inter-cut intersection is proposed, the interpart fast modeling of the frame design for aircraft assembly fixture come true. 5Based on the researches mentioned before, a sub-system of frame fast design for aircraft assembly fixture is developed on CATIA. The sub-system is used to design the aircraft assembly fixtures in a large aeronautics corporation and make a good- effect.

论文的主要工作如下： 1研究了飞机装配型架骨架设计重用技术，在总结归纳骨架线框结构类型的基础上，应用模板驱动的方法建立了骨架线框库，通过骨架线框零件的实例化和离线编辑实现骨架线框的重用，有效利用设计资源，减少重复劳动； 2提出穷举几何对象的装配特征直接获取方法，遍历零件模型的几何对象，从中捕捉所需装配特征，该方法简捷、高效；提出向装配面投影的装配特征间接获取方法，该方法在现有特征基础上生成装配特征，解决了部分装配特征难以直接获取的问题； 3研究了基于装配特征的飞机装配型架骨架自动装配技术，采用一种二叉树装配模型表达骨架的装配关系，并通过装配特征的分配、获取和赋值三个步骤，实现了骨架分别与飞机产品和可调支承的自动装配，避免了繁琐的人工交互操作，提高了骨架设计的效率和规范化程度； 4研究了飞机装配型架骨架零件间建模技术，在总结归纳骨架元件相贯处理方式的基础上，提出了骨架元件单剪切相贯、双剪切相贯和互剪切相贯的实现算法，简化了骨架相贯处理的过程； 5基于以上研究，在CATIA平台上开发了飞机装配型架骨架快速设计子系统，并应用于某大型航空企业的装配型架设计，提高了设计效率和设计质量。

On moving base, a new initial alignment algorithm for strapdown inertial navigation system is proposed. In the algorithm, two special inertial frames, the initial-time inertial frame (i0 frame) and the initial-time SINS body inertial frame (ib0 frame), are defined and are selected as calculation reference frames, then, the calculation of initial alignment direction cosine matrix is expanded into three parts:(1) the DCM between i0 frame and the navigation frame will be easily obtained via local geographical coordinates and initial alignment time;(2) attitude updating using gyro samples gets the DCM between SINS frame and ib0 frame;(3) by explaining SINS specific force equation in SINS body frame, the relation between velocity log, accelerometer measurement and gravity acceleration is established to achieve the constant DCM from ib0 frame to i0 frame.

在运载体运动情况下，提出了一种适用于捷联惯导系初始对准的新算法，该算法以惯性空间为参考基准，即建立了初始时刻惯性坐标系（i0系）和初始时刻捷联惯组惯性坐标系（ib0系）两个惯性坐标系，将初始对准姿态矩阵的实现分解为三部分：（1）通过地理位置和初始对准时间求解i0系至导航坐标系的变换矩阵；（2）使用姿态更新算法实时计算捷联惯组相对于ib0系的变换矩阵；（3）通过惯导比力方程变形，获得测速仪辅助测量、加速度计输出和重力加速度之间的关系，从中可以求解出从ib0系至i0系的常值变换矩阵。

与balloon frame相关的网络解释 [注：此内容来源于网络，仅供参考]

balloon frame：轻型骨架

balloon densimeter 囊式比密度计 | balloon frame 轻型骨架 | ball-passing test 通球试验

balloon frame construction：轻捷骨架结构

ballast pit 碎石料坑 | balloon frame construction 轻捷骨架结构 | baluster 栏杆柱

balloon frame house：轻捷构架房屋

balloon former ==> 汇总三角板 | balloon frame house ==> 轻捷构架房屋 | balloon framed construction ==> 轻捷骨架构造

wood balloon frame construction：轻捷木骨架构造

wood alcohol 木醇 | wood balloon frame construction 轻捷木骨架构造 | wood base composite panel 木基复合材料板

balloon frame co truction：轻捷骨架结构

ballast pit 碎石料坑 | balloon frame co truction 轻捷骨架结构 | baluster 栏杆柱