系统控制接口

With the rapid development of computer ,micro-electronics and network, embedded system has been widely applied in the national defence, industry, medical treatment,etc.lt is very meaningful and important to develop a general platform, which is an integrated production of embedded control, signal processing and network communication, and provide a programmable hardware interface and a friendly interface, which can improve networking flexibility, system reliability and developability.

随着计算机技术、微电子技术和网络技术的飞速发展，嵌入式系统在国防、工业、医疗等诸多领域的应用越来越广泛。研制一个集嵌入式控制、信息处理和网络通信于一体，且提供可编程的硬件接口和友好的软件开发界面的通用平台，对于提高分布式测控系统的组网灵活性、系统可靠性和可开发性都具有重要的意义。

According to actual condition, a model of wall thickness of rotary kiln is established. The constant coefficients in the model, including thermal conductivity, heat transfer coefficient, Fourier coefficient and contact resistance, are closely calculated. A formula of contact resistance is draw from a great deal of data of surface and inner temperature of rotary kiln. The wall thickness of rotary kiln is simulated by MATLAB. The simulation result is transmitted from MATLAB to DELPHI through a group of interface functions compiled by VC++. The basic graphs-circle and line are analyzed by the means of the technique of Visualization in Scientific Computing and the Bresenham arithmetic, and are realized the visualization of the wall thickness. The contents of communication between master computer and slaver computer are designed and the error control technique, the idea of multi-thread and the embedded assembly language are applied to realize the temperature data transmission and graph transmission, which largely improved the speed of transmission and the reliability and stability of system.

建立了符合现场实际的回转窑壁厚数学模型；结合现场采用红外测温仪测量所得的温度数据和回转窑的实际结构数据，确定出适合该模型的定常系数(包括导热系数、换热系数、傅立叶系数、接触热阻等)，并得出与回转窑工况的相近的接触热阻公式ln=T~(0.5154)-36.7868；利用MATLAB软件仿真出回转窑壁厚，并将运算结果通过在VC++的编译环境下编译出MATLAB和DELPHI的接口函数传输到该监测系统中，实现了温度数据的转换和交换；运用科学计算可视化技术和Bresenham扫描转换算法对基本图形——圆和直线进行分析，从而实现了仿真后的壁厚数据可视化；在研究异步串行通信方式的基础上，设计了该系统上下位机功能和通信内容，并运用差错控制技术、多线程思想以及嵌入式汇编语言实现了温度数据和图形数据在上下位机之间的远程传输，提高了数据传输的速率和系统的可靠性、稳定性。

Some techniques, such as multiprocessor organization, pipeline, virtual memory, ring-protection of main memory, multiple memory modules with address interleaving, cache, RAS and 1/O standard interface, have been employed in the system. A simple form of single-arm-latch has been adopted. Operating system used in HDS-9 is symmetric to each processor.

此机在系统结构上采用多重处理机结构，流水线控制技术，虚拟存储器技术，存储器环状保护技术，存储器多模交叉访问，高速缓冲技术，RAS技术，统一标准接口的I/O系统；在工艺技术方面采用高密度组装技术，用SSI-TTL电路组成单臂门闩触发器系统；在系统软件方面采用匀称或平等的操作系统来处理多重处理机关系。

Some techniques, such as multiprocessor organization, pipeline, virtual memory, ring-protection of main memory, multiple memory modules with address interleaving, cache, RAS and 1/O standard interface , have been employed in the system. A simple form of single-arm-latch has been adopted.

此机在系统结构上采用多重处理机结构，流水线控制技术，虚拟存储器技术，存储器环状保护技术，存储器多模交叉访问，高速缓冲技术，RAS技术，统一标准接口的I/O系统；在工艺技术方面采用高密度组装技术，用SSI-TTL电路组成单臂门闩触发器系统；在系统软件方面采用匀称或平等的操作系统来处理多重处理机关系。

To prepare studying hierarchical intelligent control system of material flows in mineral processing plant further, picturing, transition rulers, analytic methods, relevance matrix and dynamic equation, defect in applying of Petri network, fall short of orient object models applying are discussed after technology of formalization model built, non-formalization built and compound model. And Petri network system with time attribute is expanded opening network system with interface of input and output. The network system expanded with all attributes of basic Petri network model has hierarchy and recursiveness, can be analyzed with mathematical tools of network system and can deal with concurrent and asynchronously also.

为了对选矿厂生产物流递阶智能控制系统的进一步研究奠定基础，本文在讨论了形式化建模技术、非形式化建模技术和复合模型的基础上，研究和分析了Petri网的图形表示、变迁规则、分析方法、关联矩阵与动态方程、Petri网模型应用中的缺陷、面向对象模型应用中的不足，并把采用赋时的Petri网系统扩展成为对外界有输入和输出接口的开放网系统，扩展后的Petri网具有递阶性和递归性，同时保持基本Petri网的所有性质，使模型仍可采用网系统数学工具进行分析，并可处理生产物流系统中的并发性和异步性。

The working principle of a novel short st roke linear DC motor wit h permanent magnet s is presented. Mixed digital - analog cont rol approach based on DSP ( TMS320L F2407A) is proposed. Displacement detecting and cont rol technique are discussed. Displacement detecting circuit s , digital - to - analog converter (DAC7641) expanded circuit s and cont rol software are given.

阐述了一种新研制的短行程永磁直流直线电机的工作原理，提出了基于DSP ( TMS320L F2407A)的短行程直流直线电机数、模混合伺服控制系统方案，重点对直线电机的位置检测及控制技术进行了研究，给出了DSP 控制器的位置检测接口电路、16 位双极性数模转换器(DAC7641)的扩展电路和控制软件的实现方法。

The system fits the MIL-STD-1553B interface, made up of PIU, CDU, dual DTD connected with 1553B bus.

这种系统可以与MIL-STD-1553B接口匹配，由处理机接口装置、控制显示装置和双套与1553B数据总线联接的数据传输装置构成。

All business logic components are based on DCOM. It provides the Business Process Reengineering function, and output/input interfaces based on XML in order to exchange data with different operating system and platform. The system adopts dual encryption with software and hardware: Encapsulating the function of CryptoAPI of Microsoft provides file enciphering interface and file deciphering interface.

本系统采用软加密和硬加密结合的方式来保护软件：封装微软加密库，形成加密、解密组件，提供加密接口和解密接口函数；采用Access库的安全机制，对数据库建立SqServer.mdb三级安全机制；将用户数量写入硬件加密狗中，控制客户端的数量。

The system adopts dual encryption with software and hardware: Encapsulating the function of CryptoAPI of Microsoft provides file enciphering interface and file deciphering interface.

本系统采用软加密和硬加密结合的方式来保护软件：封装微软加密库，形成加密、解密组件，提供加密接口和解密接口函数；采用Access库的安全机制，对数据库建立SqServer.mdb三级安全机制；将用户数量写入硬件加密狗中，控制客户端的数量。

Moreover, it provides the uses with a keypad and can receive the Geographic coordinate by GPS module. Secondly, we finish the driver which based on Windows CE stream driver module and expose all the hardware resource to applications.

论文基于终端系统的硬件构成，以Windows CE的流接口驱动模型为框架，开发了满足系统要求的驱动程序，为系统应用程序控制系统硬件资源提供支持。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。