Real-Time Electronic Engine Control (EEC) Microprocessor Software Productivity

1984 ◽  
Author(s):  
P. F. Salamon
Keyword(s):  
Real Time ◽  
Engine Control ◽  
Software Productivity ◽  
Electronic Engine Control

scholarly journals Design of the Electronic Engine Control Unit Performance Test System of Aircraft

Aerospace ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 158
Author(s):  
Seonghee Kho ◽  
Hyunbum Park
Keyword(s):  
Real Time ◽  
Performance Test ◽  
Test Bench ◽  
Control Unit ◽  
Test System ◽  
Engine Control Unit ◽  
Engine Control ◽  
Control Logic ◽  
Engine Model ◽  
Electronic Engine Control

In this study, a real-time engine model and a test bench were developed to verify the performance of the EECU (electronic engine control unit) of a turbofan engine. The target engine is a DGEN 380 developed by the Price Induction company. The functional verification of the test bench was carried out using the developed test bench. An interface and interworking test between the test bench and the developed EECU was carried out. After establishing the verification test environments, the startup phase control logic of the developed EECU was verified using the real-time engine model which modeled the startup phase test data with SIMULINK. Finally, it was confirmed that the developed EECU can be used as a real-time engine model for the starting section of performance verification.

Fault Detection and Accommodation in Real Time Embedded Full Authority Digital Electronic Engine Controls

1998 ◽  
Author(s):  
Angelo Martucci
Keyword(s):  
Fault Detection ◽  
Real Time ◽  
Engine Control ◽  
System Failures ◽  
Application Program ◽  
Software Application ◽  
Dual Channel ◽  
Basic Fault ◽  
Communication Devices ◽  
Electronic Engine Control

Fault Detection and Accommodation Logic easily occupies at least fifty percent of the real time embedded software application program in the contemporary Full Authority Digital Electronic Engine Control (FADEC). Indeed, if a layman were to look at the logic distribution in a FADEC he might think the main purpose of the FADEC was to detect failures! This, of course, is not the case. It is true, however, that real world applications must be programmed to deal with the inevitable fact that system failures will occur. The success of the application program then depends not only on how well it controls the engine, but how well it detects, isolates and accommodates failures. In other words, the fault tolerance of an application is just as important as the robustness of the control algorithms. Over the past two decades many basic Fault Detection and Accommodation (FDA) techniques have been developed and have become commonplace in FADECs. These techniques have been developed in such a way as to maximize an application’s Built In Test (BIT) effectiveness for both “hard”, “soft”, and intermittent failures, while minimizing failure annunciation due to “false alarm” events. These techniques have been implemented in both hardware and software. This paper will present and discuss these basic FDA techniques for input signals, output signals, processors, memory devices and communication devices. Many of the newer FDA techniques will also be discussed. An overview of the key components of FDA, and the established “norms” for effective FDA will be added for completeness. Since the structure of FDA is dependent upon system architecture, the system under consideration is chosen as the Dual-Channel Full Authority Digital Electronic Engine Control. This is the configuration that is most commonly used in commercial and military engine control applications.

Turbine Blade Tip Clearance Measurement Instrumentation

2007 ◽  
Author(s):  
Eric B. Holmquist ◽  
Peter L. Jalbert
Keyword(s):  
Control System ◽  
Real Time ◽  
Tip Clearance ◽  
Engine Control ◽  
Operating Characteristics ◽  
Static Structure ◽  
Engine Operation ◽  
Area Of Interest ◽  
Blade Tip ◽  
Blade Tip Clearance

New and future gas turbine engines are being required to provide greater thrust with improved efficiency, while simultaneously reducing life cycle operating costs. Improved component capabilities enable active control methods to provide better control of engine operation with reduced margin. One area of interest is a means to assess the relative position of rotating machinery in real-time, in particular hot section turbo machinery. To this end, Hamilton Sundstrand is working to develop a real-time means to monitor blade position relative to the engine static structure. This approach may yield other engine operating characteristics useful in assessing component health, specifically measuring blade tip clearance, time-of-arrival, and other parameters. UTC is leveraging its many years of experience with engine control systems to develop a microwave-based sensing device, applicable to both military and commercial engines. The presentation will discuss a hot section engine demonstration of a blade position monitoring system and the control system implications posed by a microwave-based solution. Considerations necessary to implement such a system and the challenges associated with integrating a microwave-based sensor system into an engine control system are discussed.

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