新型双齿条齿轮大功率大扭矩扭振振动台（摆振控制、参数测量及数据处理系统设计及软件编制）（本科毕业论文.doc

摘 要

新型双齿条齿轮大功率大扭矩扭振振动台是用来对零件进行疲劳试验、动态刚度、动态阻力等性能测试的多功能试验平台。它可以为零件的设计提供准确而且完备的设计依据，并对最终产品的性能予以评估。对机械零件的性能、寿命进行测试和分析,可以为产品设计与质量评价提供可靠的科学依据,缩短产品的开发周期和提高产品质量。
本文结合课题“新型双齿条齿轮大功率大扭矩扭振振动台的设计”，以虚拟仪器理论和计算机控制理论为指导完成系统的设计与实现，制造一个集机、电、液和计算机为一体的现代测控系统。其测控系统主要由角位移传感器、扭矩传感器，电液伺服阀，功率放大器，数据采集卡和计算机组成。该试验台具有输入扭矩可控可调，输入频率可控可调，输出的扭振转角可控可调，能够输出扭矩和时间，摆角和时间以及扭矩和角度之间的曲线关系，并能够进行实验数据存储等功能。具有较高的工作效率，测试精度和智能化水平。
本文的主要内容包括：论述了虚拟仪器设计思想和计算机控制技术在测控系统中的应用、数字控制器在系统中的设计和实现以及系统各硬件的选型、安装和调试。
研究并分析了与上述方案相关的伺服控制系统、动态链接库、转速扭矩传感器，C++串口通信等技术，并结合这些技术及本试验台的实际情况开发出了界面友好、功能完备的试验台测控软件。测控系统软件是在目前最为通用的Windows操作系统下利用VB开发的，采用面向对象和可视化的设计方法，提高了开发效率。操作界面直观，使用方便。


关键字：传感器，摆振控制，参数测量，数据处理，软件编制














ABSTRACT

A new vibration generator of Two-rack gear high power and torsion moment is a comprehensive experimental platform used to test fatigue, stiffness, resistance and so on. It can provide precise and general gists for the parts’ design and verify the performance of the final products. The testing and analysis of mechanical transmission system’s performance and life provides reliable scientific evidence for product design. Besides, quality eva luation shortens product development cycles and upgrades product quality. So the test bed technology related research is of great significance.
In this thesis, a computer control and test system is designed and brought about successfully in the direction of the theory of virtual instrument and computer control. To make a modern test and control system, which includes mechanic, electronic, hydraulic and computer. The improvement system is made up of the angular displacement sensors, torque sensors, electro-hydraulic proportional flow control valve, power amplifier, data gathering board and computer. This test platform has various functions, for example, the input torque ,the input frequency and the output torsional vibration cornerare are controllable and adjustable. it also can output the curves which shows the relationship between time and torque, the relationship between angle and time and the relationship between torque and angle. it can still stores the experimental data. The test accuracy, the test efficiency and the intelligent level of hydraulic experimentation has been greatly improved.
The main content of this thesis includes the application of computer control and virtual instrument in the system, the design of the digital controller, the selection of the hardware, the installation and debugging of the system,
The technology of servo control system, dynamic link library, speed torque sensor, C++ serial communications related to the above scheme is researched and analyzed. A friendly interface, complete functional test-bed control software is developed integrated these technologies and the actual situation test bed. The control software based on the currently most common operating system-Windows is developed by C++ Builder 6.0.With the object-oriented and visual design methods, improve the efficiency of the development. The interface of the system is intuitive and easy to use.

Keyword: sensors, vibration control, measurement, data processing, software preparation







目 录


中文摘要--------------------------------------------------------------------------Ⅰ
ABSTRACT-----------------------------------------------------------------------Ⅱ
1绪论-------------------------------------------------------------------------------1
1.1本课题研究的目的，内容，意义--------------------------------------------1
1.2 本课题研究的具体任务----------------------------------------------------1
1.3系统设计----------------------------------------------------------------2
1.4本章小结----------------------------------------------------------------3

2 虚拟仪器和计算机控制技术
2.1 虚拟仪器技术初探-------------------------------------------------------------------------4
2.1.1 虚拟仪器的概念-----------------------------------------------------4
2.1.2 虚拟仪器的组成与分类-----------------------------------------------5
2.1.3 虚拟仪器的软件开发环境---------------------------------------------6
2.1.4 虚拟仪器的特点-----------------------------------------------------6
2.1.5 虚拟仪器技术在扭振振动试验台计算机测控系统中的应用--------..