Optimiztion Design And Perfection Of Software For High Temperature Superconductior Magnetic Levitation Measurement System

In order to develop high temperature superconduction magnetically levitated train, the superconduction laboratory of Southwest Jiaotong University developed a high temperature superconduction measurement system. This measurement system is consists of numerical control equipment, sensor, numerical control computer driving control, data collecting and processing and system software.In the course of using this measurement system, users found some problems which are in the dire need of resolve, such as it can' t measure levitation force and guidance force at the same time. While these problems can be solved without changing the original hardware equipment. For ultilizing the equipment sufficiently.it' s required to optimize this measurement system and perfect its function.This paper optimized the software of high temperature superconduction measurement system and perfected its functions based on analyzing the hardware and software' s structure of this measurement system and its work principle. Such problems have been optimized:(l)The system' s initialization is called after main program has run, so that users can call the system' s initialization when they need. (2)Measuring levitation force and guidance force at one time with multithread, so that we can study the relation between levitation force and guidance force. (3)Add a function of keeping from mistaken handle. (4)Optimized memory' s allocation and data' s storage format. Perfected function include such aspects: (1)It can measure with little loop in big loop measurement when measure levitation force or guidance force. (2)When scan magnetic field, it store the collected data to disk. (3)Add the function of graphical interfaces' output.The software is developed under LabWindows/CVI. It controls servo electromotor and stepper eletromoters by communicating with PMAC, andcollects data. Data processing is realized by programing.