scholarly journals Design and Test Evaluation of Full Authority Digital Electronic Control System for an Auxiliary Power Unit

2018 ◽  
Vol 36 (6) ◽  
pp. 1102-1107
Author(s):  
Kai Peng ◽  
Fan Yang ◽  
Ding Fan ◽  
Linfeng Gou ◽  
Hongliang Xiao ◽  
...  
Keyword(s):  
Control System ◽  
Power Unit ◽  
Digital Control ◽  
Electronic Control ◽  
Digital Control System ◽  
Control Laws ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Electronic Control System ◽  
Key Techniques

A helicopter auxiliary power unit (APU) is initially equipped with a hydro-mechanical control system (HMC). Because HMC's complex structure is difficult to be modified to realize sophisticated control algorithms and the APU is faced with the need for performance improvement, it is urgently necessary to carry out digital control modification of HMC. Based on the analysis of control laws of the original HMC and differences between HMC and digital control system, key techniques involved in the digital control system are studied, such as overall structure, control laws and fuel system based on electric fuel pump, and finally a full authority digital electronic control system (FADEC) is developed for APU. Functions, performances and key techniques of the FADEC system are evaluated on test rig, and the test results show functions of original control system are enhanced and performances of APU are improved more effectively under the control of the designed FADEC compared with the original HMC.

Design of 80000N·m Torsion Testing Machine

2014 ◽  
Vol 607 ◽  
pp. 350-353
Author(s):  
Wei Li Yu
Keyword(s):  
Control System ◽  
Power Unit ◽  
Testing Machine ◽  
Electronic Control ◽  
Control Manner ◽  
Torsion Testing ◽  
Mechanical Structure ◽  
Electronic Control System

The article introduce the mechanical structure and the principles of 80000 N·m torsion testing machine, the structure and the principles of checking power unit of this kind of testing machines and the control manner and the principles of the electronic control system, than expound the benefits of the equipment and its application.

A New System of Failure Warning and Monitoring Control System for Gas Turbine Compressor (GTC)/Auxiliary Power Unit (APU) of Aircrafts and a Sample Study

2012 ◽  
Vol 503-504 ◽  
pp. 1633-1638 ◽  
Author(s):  
Melih Cemal Kushan ◽  
Zhong Xiao Peng ◽  
Shu Zhi Peng
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Power Unit ◽  
Aviation Industry ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Gas Turbine Compressor ◽  
New System

One of the key elements of servicing the aviation industry is the provision and maintenance of first class equipment. In order to ensure a secure and effective flight of aircrafts in aviation, the ground supporting equipment which enables the planes to get off the ground without delaying the flight plans, has to be kept ready at all times [1].

Modeling and Simulation of the Auxiliary Power System in Extended Range Electric Vehicle

2013 ◽  
Vol 397-400 ◽  
pp. 1858-1862 ◽  
Author(s):  
Ling Shan Chen ◽  
Xiao Le Wang ◽  
Xiang Er Huang ◽  
Pin Gan ◽  
Wei Cheng
Keyword(s):  
Control System ◽  
Electric Vehicle ◽  
Power Unit ◽  
Engine Speed ◽  
Torque Control ◽  
Decoupling Control ◽  
Vehicle Simulation ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Extended Range

To study the performance of auxiliary power unit in extended range electric vehicle, simulation model of auxiliary power unit and its control system are established with MATLAB/Simulink. The method of decoupling control achieved engine speed control and generator torque control. Finally actual power responds change of required power quickly.

scholarly journals Research on the Design Method of the Starting Process of Main Fuel Control system for Aviation Auxiliary Power Unit

2018 ◽  
Vol 227 ◽  
pp. 01004
Author(s):  
Yanan Guo ◽  
Ding Fan ◽  
Kai Peng ◽  
Fang Tian
Keyword(s):  
Control System ◽  
Power Unit ◽  
Design Method ◽  
System Control ◽  
Future Design ◽  
Auxiliary Power Unit ◽  
Fuel Flow ◽  
Auxiliary Power ◽  
Starting Process ◽  
And Control

This paper analyzed the main fuel control system of the auxiliary power unit (APU), explored the starting process of the main fuel flow control system control law and control algorithm. Focus on analyzing the interpolation table that is involved in the controller of the starting process, restoring its physical meaning. The design method of the main fuel flow controller for the starting process of the APU is summarized. It’s a valuable reference for the future design of the control system of both aero-engine and auxiliary power unit.

The Study on 45KW Range Extended Electric Vehicle Auxiliary Power Unit

2014 ◽  
Vol 556-562 ◽  
pp. 2128-2132
Author(s):  
Yun Long Guo ◽  
Xu Dong Wang ◽  
Jiang Long
Keyword(s):  
Control System ◽  
Electric Vehicle ◽  
Power Unit ◽  
Smooth Transition ◽  
Constant Current ◽  
Single Chip ◽  
Control Plan ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Communication Module

Range Extended Electric Vehicle (REEV) is a vehicle in smooth transition to pure electric vehicle. According to the functional analysis to REEV, propose the overall design of auxiliary power unit, develop an APU control system. This control system is based on infineon XC164CS Single Chip Microcomputer, use modular method, design and develops the data acquisition module, IGBT driver module, CAN communication module and conducts bench experiment to the system. The bench testing shows the system has high sampling precision, fast speed, good stability and easy to debug. Basic APU strategy control plan is designed to ensure electricity generation with first constant current, then constant voltage work mode, and can perform the fault diagnosis function, meet practical requirements, and achieve the expected control purpose.

Investigation of Transient Performance of an Auxiliary Power Unit Microturbine Engine

2006 ◽  
Author(s):  
SooYong Kim ◽  
JunYoung Park ◽  
Victor L. Goldenberg
Keyword(s):  
Control System ◽  
Power Unit ◽  
Transient Process ◽  
Pressure Ratio ◽  
Load Condition ◽  
Design Stage ◽  
Turbine Engine ◽  
Auxiliary Power Unit ◽  
Air Volume ◽  
Auxiliary Power

Prevention of compressor surge is one of the most important tasks in operation of gas turbine engine. The easiest way to see the phenomena is to show the static and dynamic operation characteristic on the map. Its operation zone will be restricted by the surge limit and, static and transient process must have some margin for it. Surge margin of a static regime is normally chosen during its design stage. Safe operation during part load condition without facing the surge is an indispensable task for control system design and a swift response from the engine is required to avoid it. Effect of rotor moment of inertia, air/gas volumes and heat transfer are factors to cause the transition from the static line. In case a large volume such as heat exchanger exists in the system it will exert a substantial influence to dynamic characteristics. In the present paper, influence of air volume bled from the compressor exit on transient process is investigated with an example of an auxiliary power unit micro-turbine engine. A typical compressor characteristic with scaling was used for the calculation. Turbine mass, pressure ratio, rotation speed, power and moment are calculated based on mass and work conservation. Result from the present study can give a guidance to design the control system. A computer program is developed to calculate the dynamic process using the MathCAD commercial software. Air volume is changed from 0.02 to 6 m3.

Approximation of Payback Period of Fuel Cell Auxiliary Power Unit for Large Trucks

2009 ◽  
Vol 129 (2) ◽  
pp. 228-229
Author(s):  
Noboru Katayama ◽  
Hideyuki Kamiyama ◽  
Yusuke Kudo ◽  
Sumio Kogoshi ◽  
Takafumi Fukada
Keyword(s):  
Fuel Cell ◽  
Power Unit ◽  
Payback Period ◽  
Auxiliary Power Unit ◽  
Auxiliary Power
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