Model-based Nonlinear Control of Aeroengines

Preface
Contents
Symbols
List of Figures
List of Tables
1 Introduction to Aeroengine Controls
	1.1 Introduction to Model-Based Designs
	1.2 Introduction to Model-Based Controls
	1.3 Model-Based Nonlinear Controls: State-of-the-Art
		1.3.1 Bumpless Transfer
		1.3.2 Linear Parametric Varying
		1.3.3 Full Flight Envelope Control
		1.3.4 Remark on Adaptive Control
	1.4 Contents and Contributions of the Monograph
	References
2 Aeroengine Nonlinear Modeling
	2.1 Aeroengine Component-Level Models
		2.1.1 Aeroengine Components Dynamics
		2.1.2 Aeroengine Working Equations
		2.1.3 Solving Engine Working Equations
		2.1.4 Aeroengine Performance Equations
		2.1.5 Aeroengine Performance Simulations
	2.2 Aeroengine Linear Identification Models
	2.3 Aeroengine Nonlinear Identification Models for Advanced Control
	2.4 Aeroengine Hammerstein-Wiener Modeling
		2.4.1 Introduction to Hammerstein-Wiener Systems
		2.4.2 Feasibility Analysis
		2.4.3 Model Identification over a Limited Flight Envelope
		2.4.4 Model Identification over Extended Flight Envelope
		2.4.5 Summary for Hammerstein-Wiener Aeroengine Modeling
	2.5 Aeroengine Back Propagation Neural Network Modeling
	2.6 Aeroengine Improved Back Propagation Neural Network Modeling
	2.7 Aeroengine Nonlinear Auto-Regressive with Exogenous Input Modeling
	2.8 Comparison for Aeroengine Nonlinear Identification Models
	2.9 Summary
	References
3 Model-Based Aeroengine Nonlinear Set Point Control
	3.1 Generalized Gronwall-Bellman Lemma Approach for Set Point Control
		3.1.1 Preliminaries
		3.1.2 Nonlinear Set Point Control of Aeroengines: Theoretical Results
		3.1.3 Nonlinear Set Point Control of Aeroengines: Numerical Study
		3.1.4 Summary for Generalized Gronwall-Bellman Lemma Based Design
	3.2 Control Lyapunov Function-Based Set Point Designs
		3.2.1 Preliminaries
		3.2.2 Set Point Control Using Lyapunov Method
		3.2.3 Nonlinear Aeroengine Design Using Lyapunov Method: Numerical Example
		3.2.4 Set Point PID Control with Lyapunov Functions
		3.2.5 Summary for Lyapunov-based Design
	3.3 Joint Design with Generalized GB Lemma and Lyapunov Function
	3.4 Restricted Control Lyapunov Function Method
		3.4.1 Problem Formulation
		3.4.2 Main Results on Restricted Control Design
		3.4.3 Restricted Design with Bounded Disturbance
		3.4.4 Nonlinear Set Point Control of Aeroengines: Restricted Design
		3.4.5 Summary for Restricted Lyapunov-based Design
	3.5 Finite Time Set Point Control of Aeroengines
		3.5.1 Preliminary on Finite Time Control and Problem Formulation
		3.5.2 Finite Time Set Point Designs
		3.5.3 Disturbance Attenuation and Robustness
		3.5.4 Finite Time Set Point Control of Aeroengines
		3.5.5 Summary and Discussion for Finite Time Set Point Control of Aeroengines
	3.6 Summary
	References
4 Model-Based Aeroengine Nonlinear Transient Control
	4.1 Nonlinear Generalized Minimum Variance Based Aeroengine Transient Control
		4.1.1 Optimal Controller Design
		4.1.2 Optimal Controller Implementation
		4.1.3 Fuel Flow Control of Turbofan Engines for Acceleration: Numerical Study
		4.1.4 Summary for Nonlinear Generalized Minimum Variance-based Aeroengine Control
	4.2 Nonlinear Aeroengine Transient Control with NARX Model Representation
		4.2.1 Aeroengine Modeling with NARX Representation
		4.2.2 Nonlinear Aeroengine Transient Control for Benchmarking
		4.2.3 Summary for NGMV Control of NARX Model Representation
	4.3 Nonlinear Predictive Generalized Minimum Variance-Based Aeroengine Transient Control
		4.3.1 Aeroengine Representation and Signal Listing
		4.3.2 Aeroengine Performance Index Selection and Optimization
		4.3.3 Aeroengine Optimal Control Law Design & Implementation
		4.3.4 Constraint Handling, Robustness and Small Control
		4.3.5 Nonlinear Predictive GMV-Based Aeroengine Transient Control
		4.3.6 Summary for Nonlinear Predictive GMV Control of Aeroengines
	4.4 Nonlinear Aeroengine Transient Control with Online Tuning
		4.4.1 Formulation of Online Tuning Optimal Control: Use of Anti-Causal Operator
		4.4.2 Constraint Handling for Input Saturation and Stability Issues
		4.4.3 Nonlinear Transient Control with Online Tuning
		4.4.4 Summary for Nonlinear Aeroengine Transient Control with Online Tuning
	4.5 Switching-Based Aeroengine Transient Control
		4.5.1 Switching for Fast Transient Control: Design Methods
		4.5.2 Switching for Fast Transient Control: Numerical Study
		4.5.3 Switching for Fast Transient Control: Numerical Study
	4.6 Summary
	References
5 Optimization-Based Aeroengine Nonlinear Control Integration
	5.1 Sequential Quadratic Optimization-Based Transient and Limit Protection Control
		5.1.1 Performance Index Selection
		5.1.2 Derivation of Optimal Operation
		5.1.3 Optimal Transient and Limit Protection Control: Numerical Study
		5.1.4 Control Integration Over Full Flight Envelope
		5.1.5 Conclusion & Discussions for SQP Method to Control Integration
	5.2 Active Set Method for Transient and Limit Protection Control
		5.2.1 Nonlinear Control with Active Set Optimization
		5.2.2 Numerical Investigation: Analysis & Discussion
		5.2.3 Active Set Method for Large Envelope Control: A Comparison
		5.2.4 Summary for Active Set Method for Control Integration
	5.3 A Comparative Study for Optimization-Based Engine Transient Control
		5.3.1 Aeroengine Model and Optimization Algorithms
		5.3.2 Objective Function and Constraint Function
		5.3.3 Results and Analysis
		5.3.4 Conclusions for Comparative Study for Optimization-Based Designs
	5.4 Summary
	References
6 Conclusions and Further Developments
	6.1 Conclusions
	6.2 Further Developments
		6.2.1 From Modeling to Digital Twin
		6.2.2 From Optimal Control to Performance Limit Excavation
		6.2.3 From Fault-Tolerance Control to Predictive Maintenance