Challenges for Implementing a Distributed-Control System for Turbine Engines

2010 ◽  
Author(s):  
Andrew W. Berner
Keyword(s):  
Control System ◽  
High Temperature ◽  
Gas Turbine ◽  
Distributed Control ◽  
Power Distribution ◽  
Distributed Control System ◽  
Turbine Engine ◽  
Advantages And Disadvantages ◽  
Technical Challenges ◽  
Near Term

For several years, the potential benefits of implementing a distributed-control system on an airborne gas-turbine engine have been discussed and analyzed. However, after many years of trade studies and lab demonstrations, it appears that the airborne gas-turbine community is no closer to implementing this type of distributed architecture. The NASA-sponsored Distributed Engine Control Working Group is attempting to unify the efforts of engine manufacturers, their system integrators, and sub-tier suppliers. In order to collectively move forward, it is necessary to understand the issues that have impeded the progress of this approach. In so doing, the industry can focus on the near-term work required to develop programs that would create the necessary infrastructure to make airborne turbine-engine-based distributed-control systems a reality. This paper will present some proposed distributed-control architectures, advantages and disadvantages of some of these approaches, and will discuss the major technical challenges that have, to date, prevented these architectures from becoming viable. Some of the architectural approaches range from a fully distributed system (one distributed-control module per actuator loop) to a “hybridized” system that has a data concentrator and a reduced FADEC. The technical challenges that will be discussed include: high-temperature electronics, robust serial-communication bus in a high-temperature environment, power distribution, and certification.

Paper 16: Case for the Single-Shaft Vehicular Gas Turbine Engine

1968 ◽  
Vol 183 (14) ◽  
pp. 156-176 ◽  
Author(s):  
A. F. McLean
Keyword(s):  
High Temperature ◽  
Gas Turbine ◽  
Fuel Consumption ◽  
Fuel Economy ◽  
Lower Cost ◽  
Turbine Engine ◽  
Advantages And Disadvantages ◽  
Initial Cost ◽  
Variable Transmission ◽  
Infinitely Variable Transmission

This paper reviews gas turbine cycles most favoured for vehicular use. It suggests the single-shaft turbine engine as a possible contender for a lower cost approach, where fuel economy requirements are not met by complexity of cycle but by operation at higher turbine inlet temperatures. The question, ‘Where does the engine end and the transmission begin?’ is discussed, and an example of an infinitely variable transmission is explored as a means for overcoming the performance deficiencies of the single-shaft machine. The paper examines the advantages and disadvantages of this type of turbine engine with respect to acceleration and torque characteristics, fuel consumption, engine braking, initial cost, and design for simplicity and high temperature.

Development of a Smart Actuator for Turbine Engine Applications

1998 ◽  
Author(s):  
William Lorenz
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Credit Card ◽  
High Reliability ◽  
Minimum Size ◽  
Distributed Control System ◽  
Turbine Engine ◽  
Term Operation ◽  
Data Bus ◽  
Smart Actuator

The application of distributed control systems to turbine engine controls offers the potential for major reductions in development time and costs for the engine control and the engine. Once the data bus and power bus are standardized for elements of a distributed control system, the industry will have a group of sensors, actuators, and controllers that could be interchangeable between applications. Software and hardware will still require modification to fit the specific application, however, great strides will have been made toward a “plug and play” capability between sensors, actuators, and controllers all tied together on the same data bus. The main controller in a distributed control system, except for software, would be interchangeable from engine to engine. This paper describes the design and development of the electronics for a smart actuator and discusses the design considerations which were used to guide the requirements. Requirements unique to turbine engine applications include temperature environments to 30° C, a severe vibration environment, minimum size and weight, and very high reliability. The electronics developed for the smart actuator were packaged on credit card sized printed wiring board modules. Two of these modules were packaged in a housing approximately 23×3.4×1.1 inches. The electronics operate from 28 volt DC power and communicate with the rest of the control system via the MEL-STD-1553B data bus. Although a hydraulic actuator was chosen as the demonstration vehicle, the electronic module is adaptable to any servo application and can be expanded to read any of the common engine sensors and operate solenoids. The chosen actuator was intended as a development tool to expose the design problems of distributed systems. Therefore, this first demonstration unit was designed using electronic components rated for 125° C operation. AlliedSignal is currently a member of a consortium of companies under DARPA sponsorship developing a family of SOI (silicon-on-insulator) integrated circuits rated for 200° C operation. Our current 125° C design is compatible with the new devices being developed. A 200° C unit is planned for 1998. Further improvements in the metalization used in the SOI devices will allow reliable long term operation to about 300° C. Devices for this higher temperature range are expected to be available in 1999.

scholarly journals Gas Turbine Performance Digital Twin for Real-Time Embedded Systems

2020 ◽  
Author(s):  
V. Panov ◽  
S. Cruz-Manzo
Keyword(s):  
Control System ◽  
Real Time ◽  
Gas Turbine ◽  
Distributed Control ◽  
Gas Turbines ◽  
Distributed Control System ◽  
Remote Monitoring System ◽  
Digital Twin ◽  
Turbine Performance ◽  
Automation Systems

Abstract This contribution reports on the development of Performance Digital Twin for industrial Small Gas Turbines. The objective of this study was the development of automation systems with control and monitoring functionalities, capable of addressing the requirements of future gas turbine plants for increased availability and reliability by use of Digital Twin technology. The project explored development of Performance Digital Twin based on Real-Time Embedded computing, which can be leveraged with Internet-of-Things (IOT) Cloud Platforms. The proposed solution was provided in a form of modular software for a range of hardware platforms, with corresponding functionalities to support advanced control, monitoring, tracking and diagnostics strategies. The developed Digital Twin was designed to be used in offline mode to assist the software commissioning process and in on-line mode to enable early detection of degradation and fault modes typical for gas path components. The Performance Digital Twin is based on a dynamic gas turbine model which was augmented with a Kalman tuner to enable performance tracking of physical assets. To support heterogeneity of gas turbine Distributed Control Systems (DCS), this project explored deployment of Digital Twin on multiple platforms. In the paper, we discuss model-based design techniques and tools specific for continuous, discrete and hybrid systems. The hybrid solution was deployed on PC-based platform and integrated with engine Distributed Control System in the field. Monitoring of gas turbine Performance Digital Twin functionalities has been established via Remote Monitoring System (STA-RMS). Assessment of deployed solution has been carried out and we present results from the field trial in this paper. The discrete solution was deployed on a range of Programable Logical Controller (PLC) platforms and has been tested by integrating Digital Twin in virtual engine Distributed Control System network. The Performance Digital Twin was embedded in Single Master PLC and Master-Slave PLC configurations, and we present results from the system testing using virtual gas turbine assets. The IoT Platform MindSphere was integrated within virtual engine network, and in this contribution, we explore expansion of the developed system with Cloud based applications and services.

TIMETAL 551

Alloy Digest ◽  
2006 ◽  
Vol 55 (5) ◽  
Keyword(s):  
Shear Strength ◽  
High Temperature ◽  
Physical Properties ◽  
Gas Turbine ◽  
Heat Treating ◽  
Nominal Composition ◽  
Turbine Engine ◽  
Temperature Performance ◽  
Beta Alloy ◽  
Alpha Beta

Abstract Timetal 551 is an improved-strength version of Timetal 550 alloy that retains good forging characteristics. The alpha-beta alloy has a nominal composition of Ti-4Al-4Mo-4Sn-0.5 Si, and it is used in gas turbine engine parts. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and shear strength as well as creep. It also includes information on high temperature performance as well as forming and heat treating. Filing Code: TI-138. Producer or source: Timet.

Capture Strategy Based on a Distributed Control System for a Large-scale Space End-Effector

ROBOT ◽  
2011 ◽  
Vol 33 (4) ◽  
pp. 434-439 ◽  
Author(s):  
Dangyang JIE ◽  
Fenglei NI ◽  
Yisong TAN ◽  
Hong LIU ◽  
Hegao CAI
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Large Scale ◽  
Scale Space ◽  
Distributed Control System ◽  
End Effector

scholarly journals Structure of distributed control system in Seimei telescope

2021 ◽  
pp. 1-8
Author(s):  
Ichiro Jikuya ◽  
Daichi Uchida ◽  
Masaru Kino ◽  
Mikio Kurita ◽  
Katsuhiko Yamada
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Distributed Control System
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