微小系统

And linking the principle of choosing computer visual inspection system hardware, the paper constructs hardware structure of visual inspection system, and develops measure software of thread geometry parameter and applies all above research results to quantificationally measure geometry parameters such as half angle of thread, coning and pitch of conical joint screw thread of graphite electrode, at last educes influencing expressions of the shelter of lead angle to half angle of thread change, it establishes theory base for error amendment.

论述了微小零件尺寸及形状误差的常用测量方法，提出了将视觉检测技术应用到微小零件尺寸及形状误差的测量中，构建了视觉检测系统的硬件结构，开发了相应的测量软件，应用第三章介绍的各种边缘检测方法对传动用滚子链链板进行了边缘检测对比实验，找出适合的边缘检测方法，并应用上述各章的研究结果对传动用滚子链链板节距以及圆形零件的圆度误差进行了测量。

Chaotic system has a determinate description equation, a tiny change on its initial condition would cause unpredictable changes of system trajectories.

20世纪60年代人们发现了一种称之为"混沌"的非线性系统，描述系统的方程是确定的，但系统初值有极微小地变化，将引起系统轨迹在未来不可预测的改变。

The hexapod stiffness, which is moveable platform stiffness relative to fixed base frame, generally, is a non-symmetric matrix. It can map the infinitesimal increments in the displacement and in the applied forces , representing the characteristics of forces/displacements in incremental form and relating to machine head displacements when subjects to externally applied force system. It is no doubt that the displacements will affect machine accuracy, especially with the tool under changeable load system.

六杆机构加工中心的刚度意味着输出端移动平台相对于固定基础平台的刚度，一般地，它是一个非对称的刚度矩阵，它将位移微小增量转换成微小力增量，表现了增量形式的力/位特征，关系到机床加工头受有外载荷系统时的位移，直接影响到加工精度，特别是变载荷系统下的加工精度。

When the power system load in a small disturbance, the system itself to maintain the stability of the power transmission capacity, the use of automatic excitation regulator device may reduce the reactance of the generator, and then further to maintain the transformer high-voltage bus voltage constant, so compensation not only its own reactor, but also compensation for the step-up transformer reactance, thus greatly improving the power limits of generators, which greatly increased the static stability of power system.

当电力系统的负载发生微小的扰动时，系统本身保持稳定送电的能力，使用自动励磁调节装置，则可减小发电机的电抗，再进一步维持变压器高压母线的电压恒定，这样不仅完全补偿了自身的电抗，而且还补偿了升压变压器的电抗，这样就大大提高了发电机的极限功率，即大大地提高了电力系统的静态稳定。

According to the Stereometry Mapping Micro Satellite research of Harbin Institute of Technology, a systematic and deep study on fine attitude determination and control technique is made in this dissertation, which is funded by the National 863 Aerospace Advanced Technology Plan (863-2-5-1-8) and the National"211" Education Program.

本学位论文结合国家"863"航天高技术计划的"微小卫星一体化系统总体技术"（863-2-5-1-8）预研课题，以哈尔滨工业大学立体测绘微小卫星的研制项目为背景，同时得到国家"211"重点学科建设计划的资助，对现代小卫星姿态控制系统设计中高精度姿态确定与控制技术进行系统而深入的研究。

The method is to choose the structure and parameter of fuzzy logic control system properly, so as to make the controller's output equal to the value determined by prior experience absolutely or approximatively, which can make the system output exist in a tiny neighborhood of the given value.

其基本思想是：合理确定模型逻辑控制系统的结构和参数，使系统处于稳态时控制器的输出等于或近似等于某个先验知识确定的值，该值能将系统输出维持在设定值的一个微小领域内。

Intelligent Microzone Wireless Coverage System is a Microzone Wireless Coverage System dynamic, self-allocated traffic and carrier-frequency resource.

智能微小区覆盖系统是一种可动态的、自主调配话务和载频资源的微小区覆盖系统。

After introducing the conception of the balance of the forward link and reverse link,the relationship between the soft handover add threshold in marcocell system and the load factor in microcell system,and the relationship between the soft handover add threshold in marcocell and the ratio of the interfere of other cells users to the microcell users are analyzed quantitatively and simulated according to their corresponding performance.

在引入小区前反向链路平衡概念的基础上，重点对宏小区系统的软切换增加门限与微小区系统负载因子的关系，以及宏小区系统的软切换增加门限与其它小区干扰对微小区用户干扰之比的关系进行了定量分析和相应的性能仿真。

Up to now there are a few articles published whether domestically or internationally on the investigation of small-scale ejectors, which are to be used in solar steam jet refrigeration systems. The results of this study have provided something new of the basic knowledge for the optimal design of such sort of ejectors.

目前，国内外对应用于太阳能蒸汽喷射式制冷系统中的微小型喷射器的研究很少，本文所做的工作为以后同类喷射器的设计和优化提供了一定的依据，对改进微小型喷射器的性能、提高喷射器的效率具有一定的指导性。

This paper has designed a self-Locating system based on computer vision, which is using Image processing method to realize the micro parts high accuracy locating.

本文设计了一种微小零件自主定位系统，该系统采用计算机视频技术和图像处理技术，借助单片机、步进电机和高精度丝杠等设备，完成对微小零件的精密定位。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。