【摘要】 介绍了防抱制动分析系统的虚拟仪器设计 ,从硬件和软件两方面对该虚拟仪器的构成及设计给予了详细的描述。该虚拟仪器除将传统仪器所包含的信号采集与控制、分析处理和结果显示全部在个人计算机中实现外 ,还可以方便地改变防抱制动系统的控制方法 ,以研究比较不同控制方法防抱制动系统的控制效能、系统滞后特性和控制精度等性能的优劣 ,文中给出了应用实例更多还原

【Abstract】 Virtual Instrumentation (VI) is becoming a popular tool in measurement, test and automation due to a fast development of personal computer. In this paper, a VI used for data sampling and analyzing in anti lock braking system experiments is introduced. The software and the hardware designs of the VI are described in detail. The VI can be used to measure and analyze the five main parameters of ABS and vehicle, they are the velocity of wheel, the velocity of body (the velocity of rolling drum), the brake force produced by the road surface, and the state of the ABS performer (the state of the applied pressure valve and the released pressure valve). Besides that the functions of sampling, controlling, analyzing and displaying are all achieved by a PC computer, the control logic of ABS can be changed conveniently by PC in the VI to study the characters of the ABS in different control logic, such as control efficiency, delay of the brake system and control precision. The parameters, such as the state of control valve, the time for braking, the time of locking, wheel slip and the acceleration of the wheel, can be displayed on the screen in the form of figures.更多还原