【作者】 张爱民；

【导师】 吴友宇；

【作者基本信息】 武汉理工大学 ， 通信与信息系统， 2004， 硕士

【摘要】 本论文来源于863项目摩托车排放净化关键技术及产业化(2002AA643010)的子项目——低污染摩托车净化转化系统的建立与匹配设计。 论文介绍了系统设计原理和硬件电路设计，包括信号处理、信号采集、LM3524输出PWM和隔离驱动MOSFET的模拟电路等；再详细介绍了模糊控制的原理、模糊控制器的设计以及系统其它软件程序设计；为了确保系统的可靠性，系统采用了相应的硬件和软件可靠性措施，文中对这部分内容也进行了介绍。 本论文的主要工作是解决测功机的控制、实时数据显示以及单片机和监控计算机的数据通信问题。在论文项目中将测功机的控制纳入自研系统中，提高发动机测试系统的自动化程度，减轻了实验人员的劳动强度，同时也改善了实验数据的精确度。 在自动化的检测和控制系统中，监控计算机和控制单元之间需要进行数据的交换，以便以更好的人机交互方式实现对设备的控制。由于串行通信是实现两端设备交换数据的主要手段，并遵循统一的标准因而得到广泛的应用。本系统由监控计算机和以单片机为核心的检测设备组成，包括主从单片机和A/D转换器等，实现监控计算机和单片机之间的通信。监控计算机可以处理单片机送来的数据，同时也可以通过条件的判断对单片机发出指令。由于使用环境的恶劣，在通信中数据易丢失、出错，在物理层无法完成数据的校验，因而在数据链路层采取了一定的措施，最主要的就是使用了基于HDLC数据链路层协议制定的协议。 本论文实现了对测试平台中的测功机的控制。设计了用于扭矩信号、转速信号等模拟数据向数字信号转换的数据转换卡的驱动程序。驱动程序的设计进行了两种方案的比较，选定了最优的方案，并在实验中实现。完成了单片机与监控计算机之间的数据通信，针对特定的环境，设计了基于HDLC的数据链路层协议，利用VB语言的字节处理能力，实现了该协议。建立了一套传感器的使用和信号处理方法，设计了一套测功机控制单元硬件，并实现了采用模糊控制策略对测功机的实时控制。更多还原

【Abstract】 This paper is rooted in the sub-project of No 863 that of key technologies for motors’ contamination purification and its industrialization (2002AA643010) : the setup of low-polluting motors’ purifying conversion system and its matching designs. The main purpose is to set up the engine platform measure and control system is its aim.The theory of Fuzzy Control structures and principles of every part in the system the design of the Fuzzy Controller are to be introduced. The paper elaborates the circuit design including sensors, signal processing, data acquiring, PWM control and insulated driving, etc.It introduces the software on master PC. For insuring the reliability of the system, the reliability of the circuit and software are also discussed.The task of this paper includes dynamometer control, real time data display and the data communication between SCW and computer. In this paper, the dynamometer control becomes a part of system. It advances the automatization degree of test system , alleviates the work intension of lab assistant and improves the precision of test data.In automatic detecting test and control system, the computer exchange data with the controlling unit in order to realize the control by a better person-and- machine alterative approach of equipments. The serial communication is prevailing in application, as it is the main approach to exchange data between two equipments under the unified standards. This system consists of PC and the detecting settings cored by single unit controller, including main & accessorial SCW and A/D switcher, to attempt the communication between PC and SCW. PC can deal with the data carried by SCW the same time send the instruction to SCW through the condition decision. The data are likely to lose and error so as to it can no be checked and revised in physical layer due to the notorious using environment. According to this point some measures are adopted in data-chain layer and the commonest way is to adopt the protocol base on HDLC data-chain layer protocol.In this paper, the control of dynamometer, part of testplatform is accomplished and the driver of data collection card is designed. The data collection card is used to gather the rotate speed information. Two projects are compared in designing the driver. Better project is selected and accomplished. The data communication between SCM and computer is done. Due to the given condition, the protocol based on HDLC is designed. The protocol is realized by using the capability of VB language’ s dealing with byte data. The way to use sensor of the system and the means to deal with sensor signal are set up. A set of hardware is designed. The real time control of dynamometer is accomplished by using fuzzy control tactic.更多还原