自动控制系统

In this work, three certified milk powder materials with different PCDD/Fs levels were Soxhlet-extracted and then cleaned up using Power-Prep system automatically. PCDD/Fs and planar PCBs were determined using isotope dilution and high resolution gas chromatography-high resolution mass spectrometry.

自动样品前处理在乳品中二恶英和共平面多氯联苯同时测定中的应用张磊，李敬光，吴永宁，赵云峰(中国疾病预防控制中心营养与食品安全所，北京 100050)摘要：采用索氏提取及自动净化处理系统对乳品进行提取和净化，在高分辨气相色谱-高分辨双聚焦质谱仪上进行定性和定量检测。

In order to measure the passive network's conduction automatically, a network conduction instrumentation based on FPGA technology was designed and implemented according to the design principle of Virtual Instrument. System adopted FPGA technology building a digital flat-top to imitatively produce the high quality sine signal. Under the control of C8051MCU, measurement, calculation and display of the port network's conduction were automatic implementation. Furthermore, the system has the function of frequency step measurement.

摘 要：为了实现对无源端口网络的导纳进行自动测量，根据虚拟仪器设计思想，设计实现了基于FPGA的网络导纳测量仪，系统以FPGA作为数字平台模拟产生优质的正弦信号，在单片机C8051的控制和处理下，自动实现端口网络导纳值的测量、计算、显示，同时具有频率步进测量功能。

Most of the parameters are set by manual input, no automatic-timing control, insulation monitoring function.

目前我国粮食主要以包粮运输的方式来进行，这种方式与国外采用的散粮运输方式相比，存在很大的差距和不足，导致系统的自动化程度很低，而且参数设定大多由人工输入，没有自动定时控制、绝缘自动监测功能。

Based on a thorough analysis in software auto-generating technology and monitor-control program in industry area, improves the formal definition and minimization algorithm of automata theory, designs an system environment of auto-generating monitor-control program.

在对软件自动生成技术和工业控制领域的测控程序实例进行深入分析的基础上，改进有限自动机理论中有限自动机的形式化定义及其化简算法，通过研究，设计实现了一个自动生成测控程序的系统平台。

The present invention discloses a combinable mobile container detection system, including movable shielding chamber, automatic scanning cariage and remote control device, and is characterized by that the movable shielding chamber can be disassembled and assembled, the automatic scanning carriage is equipped with door-frame type frame formed from horizontal arm and vertical arm with detectors, radiation source and trailer frame capable of two-way moving.

本发明公开了一种可组合移动的集装箱检测系统，它包括活动屏蔽间、自动扫描车和远程控制装置。其特点是，活动屏蔽间可拆卸拼装，自动扫描车上装有带探测器的水平臂和垂直臂组成的门框架、辐射源及可双向行走的拖车架。

The methods of theory analyses and digital simulation have been used in this thesis and several schemes of strapdown guidance law based on analyzing the performance of several classical guidance laws have also been present according to the characteristics of strapdown Anti-Radiation homing seeker. The stapdown guidance systems were built for a certain Anti-Radiation missile, adopting acceleration autopilot and the attitude autopilot, and the paper has focus on analyzing the performance of low frequency strapdown Anti-Radiation homing seeker. The Approaches of lead correction and dead-zone relay control were given to improve the guidance precision, and also the increasable observability law was attempt and validate.

本文采用理论分析和仿真实验相结合的方法，在对经典制导律进行理论分析和验证的基础上，针对捷联反辐射导引头的特点，提出了捷联制导律多种设计方案，并以某型反辐射导弹为应用背景，分别采用姿态角反馈自动驾驶仪和过载反馈自动驾驶仪构造了捷联制导系统，重点基于反辐射导引头的低频端特性，开展了捷联制导律的导引性能对比分析工作，提出了应用超前校正和带死区继电控制提高制导精度的方法，并对提高可观测性的捷联制导算法的实现思路进行了尝试和验证。

Based on the RFID technology's air materials management system management system, through the RFID technology, the computer information technology, the networking and so on many technologies, builds the air materials company unified information platform, can realize the Airline various Functional departments's information sharing, the service conformity; Through the RFID technology, the monitoring technology, the entrance guard technology, realize to the air materials warehouse personnel and the cargo digitized management, comes in and goes out the management including the personnel, the cargo leaves the warehousing management, the automatic audit treasury or ware house, the storehouse position automatic assignment, the visualization warehousing management, consumes the material fine refinement management, when the long-lived management, the application course track; Realizes reasonably to the air materials, scientific, the highly effective management function, and had guaranteed the air materials manages each link information acquisition the speed and the accuracy, guaranteed that the Airline grasps the air material inventory accurately promptly the real data, maintains with reasonably the control air material inventory situation.

基于RFID技术的航材管理系统，通过RFID技术、计算机信息技术、网络技术等多项技术，建立航材公司统一的信息平台，能够实现航空公司各职能部门的信息共享，业务整合；通过RFID技术、监控技术、门禁技术，实现对航材仓库人员及货物的数字化管理，包括人员出入管理，货物出入库管理、自动盘库、库位自动分配、可视化仓储管理、耗材精细化管理、时寿件管理、应用历程跟踪；实现对航材合理、科学、高效的管理功能，并且保证了航材管理各个环节信息采集的速度和准确性，确保航空公司及时准确地掌握航材库存的真实数据，合理保持和控制航材库存情况。

Based on the analysis about Motoloras SmartNet trunked radio system, the authors point out some key techniques to realize the system. Those are how to distinguish control signal and voice for establishing stable GPS data link and balance channel load etc.

作者在研究Motolora智慧网的基础上，分析了实现自动车辆定位调度系统需要解决的几个技术难题：识辨和提取控制信令和话音信息，自动建立GPS数据链路以及信道负载平衡等，并给出了解决方案。

ABSTRACT The paper mainly studies the variable structure adaptive control theory for uncertain systems, and applicated the theory into the designs of bank-to-turn missile autopilots. The main contributions of the paper are as follows:(1) Under the condition that all the matched or mismatched parameter, input and disturbance uncertainties exist, a complete set of variable structure control system design and analysis method is proposed and investigated, which brecks throush the serious confines of variable structure invariance conditions theoretically and widen the application area of the VSC theory greatly.

本文着重研究了不确定性系统的变结构自适应控制理论，解决了目前变结构控制理论和自适应控制理论中存在且亟待解决的四个方面的问题，将获得的理论研究成果直接应用于倾斜转弯导弹的自动驾驶仪设计中，取得了很好的结果。

The perturbation methods are the common analyzing method for studying thevibratory response of the mistuned bladed disk, but different perturbation methodshave their own relying conditions on the system parameters. In this dissertation, threekey perturbation methods are studied for their application conditions. Their relyingconditions on the system parameters are summarized.

本文对三种常用摄动法的构造特点及其适用性进行了研究，总结了它们在分析失谐叶盘系统振动响应时对于系统参数的适用条件；针对自适应摄动法在分析失谐叶盘系统振动响应时，对于基系统模态的选择难以控制的问题，提出了一种模态自动选择法。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。