外文翻译航空发动机状态监测系统设计研究.docx

1、外文翻译航空发动机状态监测系统设计研究Aeroengine condition monitoring system design studyDesign research abstract: the aircraft engine condition monitoring system for a certain type of aircraft engine as the research object, discussed the engine state monitoring system design and implementation, this paper mainly disc

2、usses the status monitoring system of the overall design, system software and hardware development and testing and redundancy design, and in the design of engine state monitoring system, introduced the embedded PC / 104 modules.In order to make the state monitoring system has a better scalability an

3、d adaptability, the system designed can work in three ways: airborne operation mode, data playback mode and ground test run mode, through these way for automatic monitoring of engine state parameter, for the state of the engine trend analysis, fault diagnosis, and as to provide scientific basis for

4、maintenance.Key words: the engine condition monitoring;PC / 104;Redundant design.1. The introduction As the power source of the airplane flight, aircraft engine research is a very complex process, the aircraft engine test as the development of the three pillars (calculation, manufacture and test), o

5、ne of its importance is self-evident, it turns out, mainly consisted of engine test, rather than by calculation and analysis.For the development of an aircraft engine group, is flat, how we can decide the how developed horizontal engine.For aircraft engine manufacture, condition monitoring is an imp

6、ortant examination method of engine performance, by condition monitoring and testing work is to adjust the engine performance and break-in, check the manufacturing or overhaul quality, finally gives the engine factory performance report purpose, therefore the accurate and reliable test method for st

7、ate monitoring to ensure the quality of the engine has the vital significance.As we all know, the engine vibration and high noise in the process of work and the strong jamming signal, all parameters to the variety of the monitoring system puts forward higher requirements.Especially with the improvem

8、ent of engine performance, real-time monitoring of the parameters needed for condition monitoring is becoming more and more people continue to explore new testing technology for many years, to adapt to the increasingly development of engine test technology requirements.1. The condition monitoring sy

9、stem overall design The condition monitoring system is designed for a certain type of turbofan engine, the engine monitoring system of the input signal is part of a total of 17 analog, 3 road 16 way switch frequency and quantity, including 17 analog, 3 road frequency quantity through the signal cond

10、itioning circuit into a standard signal conditioning, to lower place machine;Under 16 way switch quantity after adopting the light into a machine.In the data processing part of the need for continuous monitoring of state parameters of the engine, so in the need for signal processing, storage and tra

11、nsmission, the upper machine at the same time, according to the need to receive the signal in real time and if samples values more than its upper and lower give alarm, including buzzer lower place machine and superordination machine screen alarm; PC the data display mode including curve display, dig

12、ital display, simulation table display and record the browsing;The data communication between upper machine and lower machine way using serial communication.In order to improve the extensibility and adaptability of engine state monitoring system, the system designed can work in three ways: airborne

13、operation mode, data playback mode and ground test mode, including airborne operation mode can be PC / 104 modules separately in the form of the airborne launch during the real flight test, because of the PC / 104 modules, small volume, high reliability, high temperature resistance and resistance to

14、 adverse conditions, well adapted to the flight environment, to the parts of the flight state and parameters in the flight details and accurate acquisition, data processing and at the same time, all the data are stored in the solid plate, in order to perform data playback and analysis of engine perf

15、ormance in the future;Data playback mode can be kept in a flight test data sent to the PC via a serial port communication, PC receives the data real-time display, including using digital watch display the data in the form of clear, at the same time also to simulate image, in the form of table of dat

16、a, and in addition you can also choose to use display mode with the curve will be testing the state parameter of dynamic display, and finally to the received data stored in hard disk;Ground test methods organic combination of the airborne playback mode, operation mode and data will be collected in the process of engine test parameters are processed, then real-time transmitting them via a serial port to the PC 4, PC can display the data in real time again at the same time to save