A Study Of The Test System Of Aviation Engine Test On Ground Test-Bed

In view of the important role of aero engine ground test system in the aviation field, this paper on the stability, sensitivity, and can be the operation and other aspects of research, trying to study and discuss the correct way of system structure to build a standard and open, in order to achieve strong applicability, flexibility and maneuverability, aero engine ground test system is suitable for various models of engine, and ultimately achieve procedures, standards of aviation engine ground test.According to the aviation engine ground test requirements, the overall design of the first, and then from two aspects of hardware design and software development, and systematic study of the general method of application and development of aero engine ground test system, focuses on the realization technology of key technology in the process of software development and the core module. Research on several core modules of software anti interference of the system of data acquisition and sensor calibration and software method..The aero engine ground test system, driven by data acquisition and instrument on the various types of sensors and scanning valve relates to the test, and the test site environment, vibration and noise are very large, so the whole test system must adapt to the strong. The system in this case is the VXI technology, the system has three layers structure of C/S bus technology, standardization, modularization, generalization is the mainstream of the test automation technology in the world, can guarantee the system accuracy and flexibility and reliability requirements.In order to ensure the stability of the software, operability, universality, maintainability, networked test system structure of the system is distributed, the development and the principle of modular development of hierarchical software. The system has a huge database support and sensitive detection performance, and on the engine performance, measured by the state for the implementation of the engine performance parameters and calculate the two parameters. For the detection of abnormal data in the process, the system will automatically alarm or stop signal; at the same time, this system is able to determine the linear relationship between the variables according to the information and data collected between consumption and the actual physical quantities; because it has the powerful function of data storage, if a staff in the detection process to implementation of data query and playback, playback after detection, testing process and data, can be an easy job to achieve.Because the system has good performance and can be shielded or weakened the interference with the system stability is good, and the operation is very simple and convenient, the settings of the various technical indicators can meet the practical application, therefore, the system is widely used in the aviation industry, including large enterprises have adopted the system of scientific research.This paper mainly discussed the realization method of the test system of aviation engine ground test. Some aircraft engine ground test station test system as the research object, discuss and analyze the structure of how to establish a standard and open, strong applicability, high flexibility and maneuverability, aviation engine ground test system is suitable for various models of engine, testing standards of aviation engine ground test.According to the requirements of the aviation engine ground test, the overall design of the first, and then from two aspects of hardware design and software development, and systematic study of the general method of application and development of aero engine ground test system, focuses on the realization technology of key technology in the process of software development and the core module. Focuses on the calibration of sensor, data acquisition, database technology, software anti interference methods of several software modules.The aero engine ground test system, driven by data acquisition and instrument on the various types of sensors and scanning valve relates to the test, and the test site environment, vibration and noise are very large, so the whole test system must adapt to the strong. VXI bus technology is the main trend of automatic test technology are currently in the aspects of standardization, modularization, generalization, so the data acquisition system uses VXI data acquisition system American VXI technology company, with three layer C/S structure, to ensure the accuracy, flexibility and reliability of the system.The system uses the distributed networked test system structure, software is developed according to the principle of modular development, enhance the software versatility, stability, operability, maintainability etc.. The system can real-time measure the performance parameters of the engine, and according to the automatic calculation of two parameter formula; real time detection parameters are more limited, alarm or protective stop signal; flexibility to achieve linear between collecting power and the actual physical or multiple scaling relations; database management system based on the standard, the parameters setting and commissioning the data are saved to the database, you can easily achieve the test data query and playback; test process and test data can be viewed on any computer in the Ian.At present, the system has been put into use in AVIC flight test center. The system is high precision, strong anti-interference ability, good stability, reliable work, convenient operation, the technical indicators are able to meet the requirements of aviation engine ground test, and has a certain universality, and meet the design expectations.