scholarly journals Design of $H_\infty$ Output Feedback Controller for Gas Turbine Engine Distributed Control With Random Packet Dropouts

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 1030-1039
Author(s):  
Qiang Pan ◽  
Zheyuan Zhang ◽  
Xiaofeng Liu
Keyword(s):  
Gas Turbine ◽  
Distributed Control ◽  
Output Feedback ◽  
Gas Turbine Engine ◽  
Feedback Controller ◽  
Turbine Engine ◽  
Packet Dropouts ◽  
Output Feedback Controller

Integrated Design of Feedback Controller and UIO: An LMI Solution

2013 ◽  
Vol 302 ◽  
pp. 723-728
Author(s):  
Yue Liu ◽  
Ai He ◽  
Bin Wang ◽  
Xi Wang
Keyword(s):  
Gas Turbine ◽  
Integrated Design ◽  
Gas Turbine Engine ◽  
Feedback Controller ◽  
System Stability ◽  
Linear Matrix ◽  
Design Algorithm ◽  
Turbine Engine ◽  
Engine Control System ◽  
Integrated Design Process

Fault diagnosis in a closed-loop gas turbine engine control system poses a great challenge since that the involved controller is to keep system stability, which desensitizes fault diagnostic performance. In this paper, a design algorithm that integrates various feedback controllers and unknown input observer (UIO) has been proposed. In this method, the controller has been considered as the state of an augmented model by combining the controller and the gas turbine model. Then the UIOs for fault detecting and isolating has been designed for this augmented model to obtain the parameters of the concerned controller and UIOs simultaneously. Moreover, this integrated design process has been formulated as linear matrix inequalities (LMIs). One notable feature of this algorithm is that the integrated design can weaken the effect of a feedback controller on output residual generator and maximize the robustness of UIO against unknown disturbances. Experimental results on a gas turbine engine illustrate the effectiveness and applicability of the proposed algorithm.

scholarly journals Global Stabilization of Nonlinear Networked Control System with System Delays and Packet Dropouts via Dynamic Output Feedback Controller

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Kheir Eddine Bouazza
Keyword(s):  
State Space ◽  
Output Feedback ◽  
Sufficient Conditions ◽  
Feedback Controller ◽  
Networked Control ◽  
Dynamic Output Feedback ◽  
Packet Dropouts ◽  
Output Feedback Controller ◽  
Dynamic Output ◽  
Dynamic Output Feedback Controller

The stabilization problem is investigated for a class of nonlinear discrete-time networked control systems (NCSs). Nonideal network Quality of Services (QoS) are considered, more specifically data packet dropouts and network-induced delays. A state feedback controller for a class of NCSs is proposed. Subsequently, an observer is designed to estimate the state space. Based on the Lyapunov-Krasovskii functional, sufficient conditions (expressed in terms of LMIs) for the existence of a dynamic output feedback controller are derived. The stabilization is achieved without mathematical transformations or fuzzy logic approximations and without state space augmentation. Finally, illustrative examples are provided to show the effectiveness of the proposed method.

scholarly journals Modeling and Output Feedback Control of Networked Control Systems with Both Time Delays; and Packet Dropouts

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Li Qiu ◽  
Qin Luo ◽  
Shanbin Li ◽  
Bugong Xu
Keyword(s):  
Control Systems ◽  
Output Feedback ◽  
Time Delays ◽  
Controller Design ◽  
Networked Control Systems ◽  
Feedback Controller ◽  
Networked Control ◽  
Random Time ◽  
Packet Dropouts ◽  
Output Feedback Controller

This paper is concerned with the problem of modeling and output feedback controller design for a class of discrete-time networked control systems (NCSs) with time delays and packet dropouts. A Markovian jumping method is proposed to deal with random time delays and packet dropouts. Different from the previous studies on the issue, the characteristics of networked communication delays and packet dropouts can be truly reflected by the unified model; namely, both sensor-to-controller (S-C) and controller-to-actuator (C-A) time delays, and packet dropouts are modeled and their history behavior is described by multiple Markov chains. The resulting closed-loop system is described by a new Markovian jump linear system (MJLS) with Markov delays model. Based on Lyapunov stability theory and linear matrix inequality (LMI) method, sufficient conditions of the stochastic stability and output feedback controller design method for NCSs with random time delays and packet dropouts are presented. A numerical example is given to illustrate the effectiveness of the proposed method.

Multivariable Aeroengine PID Control With Amplitude Saturation: An LMI Solution

2010 ◽  
Author(s):  
Daoliang Tan ◽  
Ai He ◽  
Xi Wang ◽  
Yun Liu
Keyword(s):  
Gas Turbine ◽  
Output Feedback ◽  
Pid Controller ◽  
Controller Design ◽  
Gas Turbine Engine ◽  
Linear Matrix ◽  
Static Output Feedback ◽  
Engine Control ◽  
Turbine Engine ◽  
Static Output

This paper presents an approach to automatic tuning of the parameters of a PID controller for the multivariable gas turbine engine control, taking into account amplitude saturation and model nonstrict-properness. First of all, we illustrate that the PID controller design problem can be transformed into seeking a static output feedback controller for some augmented state-space model. Then we compute an initial stabilizable parameters of the involved PID controller in the strictly proper case, using a well-known static output feedback algorithm. As far as a non-strictly proper model is concerned, this paper uses a degenerate linear transformation to change its output equation into a strictly proper form. The drawback of the initially computed PID controller lies in its high gains (triggering amplitude saturation) that prevent it from being applicable to practical gas turbine engine control. In this paper, we build on a linear matrix inequality (LMI) based antiwindup scheme to address the constraints from amplitude saturation. Both of these problems are formulated in the LMI framework and can be efficiently solved using off-the-shelf software. Experimental results show the promising performance of the proposed method.

Robust H2 Output Feedback Controller Design for Damping Power System Oscillations

2017 ◽  
Vol 6 (10) ◽  
pp. 8
Author(s):  
Kho Hie Kwee ◽  
Hardiansyah .
Keyword(s):  
Power System ◽  
Output Feedback ◽  
Controller Design ◽  
Sufficient Conditions ◽  
Feedback Controller ◽  
Linear Matrix ◽  
Parameter Uncertainties ◽  
Worst Case ◽  
Output Feedback Controller ◽  
Power System Oscillations

This paper addresses the design problem of robust H2 output feedback controller design for damping power system oscillations. Sufficient conditions for the existence of output feedback controllers with norm-bounded parameter uncertainties are given in terms of linear matrix inequalities (LMIs). Furthermore, a convex optimization problem with LMI constraints is formulated to design the output feedback controller which minimizes an upper bound on the worst-case H2 norm for a range of admissible plant perturbations. The technique is illustrated with applications to the design of stabilizer for a single-machine infinite-bus (SMIB) power system. The LMI based control ensures adequate damping for widely varying system operating.

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