Study And Application On The General Purpose Automated Test System For Rocket Engine Ground Test

The current development and application of the automated test system(ATS) in rocket engine ground test (REGT) is introduced, and some problems of automated test system are analyzed. Based on inland and the international research achievements, the general purpose ATS for the rocket engine ground test is built by means of model establishment, engineering implement and experimental validation to resolving those problems in the system.Before the establishment of the general purpose ATS, several common types of bus technology in the market are studied and compared, and then the bus technology meeting the needs of the test is adopted in the paper.On the part of model establishment and engineering implement,the building process of the general purpose ATS hardware is introduced. The design idea of integrating the standard configurable modules to building the general purpose ATS of rocket engine ground test is proposed. The hardware configurable principle of the general purpose ATS and the signal transmitting manners in the system are presented.In the process of hardware implement, a new type of differential pressure flowmeter is designed to solve the problem of gas mass flow measure.In the paper, the entire and partial designs of the general purpose ATS are presented, the system software model and database model are established, and then the general purpose ATS software based on the Windows operating system and Microsoft Access database is developed by using virtual instruments software development tool LabVIEW.The general purpose ATS is used in the flowmeter calibrating test and injector cold test. By hundreds of tests, the general purpose ATS satifies the needs of test, achieves the anticipated design target. The experiment validates that the general purpose ATS is reliable, universal and easy-used.