Design And Development Of The Measuring And Controlling System On The Monorail Vehicle Air-hydraulic Converter Testing Equipment

Monorail transportation is completely brought in China, there is not current standard available at home. The braking system is a core braking component of monorail transportation, which relates to the safety of monorail transportation's vehicles, Air-hydraulic converter as the core of braking system, its performance also directly relates to the safety and punctuality of vehicle. This project is going to develop a test bench for Air-hydraulic Converter, which is a key detection and maintenance equipment with independent intellectual property rights, to promote the development of the monorail train transportation industry of China.This paper introduces that how to use the computer control technology to design the measuring and controlling system of monorail vehicle Air-hydraulic Converter. The system presents the characteristics of high automation and high precision.First of all, the paper analyzes the contents of the tests for the Air-hydraulic Converter, and then design the overall program based on the design requirements. The key technology of this test equipment is the study of static state and dynamic state for Air-hydraulic Converter. That is the impact mechanism of the pneumatic source pressure, environmental temperature and volume has gained.As the complex structure of the Air-hydraulic Converter, and inherent compressibility of air, and the flow of air through the value port is nonlinear, and the larger friction of cylinder make the system into a typical nonlinear system, this paper proposes fuzzy-PID combined control to control the pressure of system, this method resolve the shortcoming of classic PID control, it can achieve fast, stable and accurate control of the pressure.The paper choose IPC-based control system as the system control program, which has high flexibility, high accuracy, data storage and processing convenience, cost-effective and many other advantages, it can completely meet the design requirements of the system. The measuring and controlling software of system is based on Visual C++ 6.0, which has good man-machine interface, modular programming ideas, and good stability.