Adaptive Combustion Control System Design of Diesel Engine via ASPR Based Adaptive Output Feedback with a PFC

2016 ◽  
Vol 28 (5) ◽  
pp. 664-673 ◽  
Author(s):  
Ikuro Mizumoto ◽  
◽  
Seiya Fujii ◽  
Jyunpei Tsunematsu
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
Diesel Engine ◽  
Output Feedback ◽  
Combustion Model ◽  
Control System Design ◽  
Combustion Control ◽  
Adaptive Control System ◽  
Controlled System ◽  
Engine Combustion

[abstFig src='/00280005/07.jpg' width='300' text='Adaptive engine combustion control system' ] This paper deals with a combustion control system design problem of diesel engine. For a combustion model of diesel engine, which has been provided for on-board control, an adaptive control system based on an adaptive output feedback control with a simple adaptive feedforward input will be proposed based on the “almost strictly positive real-ness” (ASPR-ness) of the controlled system. A simple parallel feedforward compensator (PFC) design scheme, which renders the resulting augmented controlled system ASPR, will also be proposed based on basic combustion model properties to design stable adaptive control system for the diesel engine combustion control. The effectiveness of our proposal is confirmed through numerical simulation.

Performance-Driven Adaptive Output Feedback Control with Direct Design of PFC

2015 ◽  
Vol 27 (5) ◽  
pp. 461-468 ◽  
Author(s):  
Taro Takagi ◽  
◽  
Ikuro Mizumoto ◽  
Junpei Tsunematsu ◽  
◽  
...  
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
Feedback Control ◽  
Output Feedback ◽  
Output Feedback Control ◽  
Adaptive Control System ◽  
Controlled System ◽  
Direct Design ◽  
Adaptive Output Feedback Control ◽  
A Performance

<div class=""abs_img""> <img src=""[disp_template_path]/JRM/abst-image/00270005/01.jpg"" width=""300"" /> Block diagram of proposed control</div> An adaptive control system is configured simply by output feedback when the controlled system is almost strictly positive real (ASPR). ASPR conditions are, however, very severe restrictions for actual systems. The parallel feedforward compensator (PFC), which is designed for making augmented controlled system ASPR, has been proposed to solve this problem. We propose a performance-driven adaptive output feedback control system with a PFC designed via direct design. Our proposed adaptive control system is to be used for systems whose properties change during operation. Our PFC’s direct design uses the system’s input/output data and readjusts output feedback gain based on a performance index. The effectiveness of the proposed method is confirmed through experiments using liquid level control for the two-tank process system. </span>

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