Control Design for a Non-minimum Phase Hypersonic Vehicle Model

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ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (948 download)

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Book Synopsis Control Design for a Non-minimum Phase Hypersonic Vehicle Model by : Thomas McKenna

Download or read book Control Design for a Non-minimum Phase Hypersonic Vehicle Model written by Thomas McKenna and published by . This book was released on 2016 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air-breathing hypersonic vehicles are emerging as a method for cost-efficient access to space. Great strides have recently been made in the field of hypersonic vehicles, however the unique dynamics of the vehicles present challenges for control design. In this thesis, a nonlinear controller for a hypersonic vehicle model is designed using the Indirect Manifold Construction approach. The high fidelity hypersonic vehicle model considered in this thesis includes many of the challenging effects of hypersonic flight. The main challenge to control design is the vehicle's unstable internal dynamics. This non-minimum phase behavior prevents the use of many standard forms of nonlinear control techniques. The nonlinear controller developed in this thesis following the Indirect Manifold Construction approach uses a hierarchical control design to force outputs to commanded values while ensuring the internal dynamics of the system remain stable. The nonlinear controller is shown to be effective in simulation. The closed loop system is also shown to be stable through a Lyapunov based stability analysis.

Control Relevant Modeling and Design of Scramjet-powered Hypersonic Vehicles

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ISBN 13 :
Total Pages : 169 pages
Book Rating : 4.:/5 (834 download)

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Book Synopsis Control Relevant Modeling and Design of Scramjet-powered Hypersonic Vehicles by : Jeffrey James Dickeson

Download or read book Control Relevant Modeling and Design of Scramjet-powered Hypersonic Vehicles written by Jeffrey James Dickeson and published by . This book was released on 2012 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides an overview of scramjet-powered hypersonic vehicle modeling and control challenges. Such vehicles are characterized by unstable non-minimum phase dynamics with significant coupling and low thrust margins. Recent trends in hypersonic vehicle research are summarized. To illustrate control relevant design issues and tradeoffs, a generic nonlinear 3DOF longitudinal dynamics model capturing aero-elastic-propulsive interactions for wedge-shaped vehicle is used. Limitations of the model are discussed and numerous modifications have been made to address control relevant needs. Two different baseline configurations are examined over a two-stage to orbit ascent trajectory. The report highlights how vehicle level-flight static (trim) and dynamic properties change over the trajectory. Thermal choking constraints are imposed on control system design as a direct consequence of having a finite FER margin. The implication of this state-dependent nonlinear FER margin constraint, the right half plane (RHP) zero, and lightly damped flexible modes, on control system bandwidth (BW) and FPA tracking has been discussed. A control methodology has been proposed that addresses the above dynamics while providing some robustness to modeling uncertainty. Vehicle closure (the ability to fly a trajectory segment subject to constraints) is provided through a proposed vehicle design methodology. The design method attempts to use open loop metrics whenever possible to design the vehicle. The design method is applied to a vehicle/control law closed loop nonlinear simulation for validation. The 3DOF longitudinal modeling results are validated against a newly released NASA 6DOF code.

Schlachtordnung der Kayserlichen Armee, zur Attaque der Verschanzungen von Breslau, 1757

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ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (314 download)

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Book Synopsis Schlachtordnung der Kayserlichen Armee, zur Attaque der Verschanzungen von Breslau, 1757 by :

Download or read book Schlachtordnung der Kayserlichen Armee, zur Attaque der Verschanzungen von Breslau, 1757 written by and published by . This book was released on 1757 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Control Oriented Modelling and Nonlinear Control Design for an Air-breathing Hypersonic Vehicle

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ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (838 download)

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Book Synopsis Control Oriented Modelling and Nonlinear Control Design for an Air-breathing Hypersonic Vehicle by : Jason Terry Parker

Download or read book Control Oriented Modelling and Nonlinear Control Design for an Air-breathing Hypersonic Vehicle written by Jason Terry Parker and published by . This book was released on 2006 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This thesis describes control oriented modelling, i.e. the development of a model which is amenable to control design, of an air-breathing hypersonic vehicle and nonlinear control design based on the constructed model. The full simulation model, or truth model, includes intricate couplings between the engine dynamics and the flight dynamics, along with complex interplay between the flexible and rigid modes of the vehicle. Furthermore, this model is found to be unstable and non-minimum phase with respect to the variables to be controlled. By replacing the complex force and moment functions with curve fitted approximations, neglecting certain weaker couplings, resorting to dynamic extension at the input side, and neglecting slower portions of the system dynamics, a control oriented model with full vector relative degree with respect to the regulated output is obtained. Standard dynamic inversion can then be applied to this model, resulting in approximate linearization of the input/output map of the truth model. A robust outer loop control is then designed using LQR with integral augmentation in a model reference scheme. Simulation results demonstrate that this technique achieves excellent tracking performance even in the presence of small plant parameter variations. The fidelity of the truth model is then increased by including additional flexible effects which render the original control design ineffective. A more elaborate control approach with an additional actuator is then employed to compensate for these new flexible effects, and simulation results which include mild plant parameter variations are presented.

Nonlinear Adaptive Controller Design for Air-breathing Hypersonic Vehicles

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ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (681 download)

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Book Synopsis Nonlinear Adaptive Controller Design for Air-breathing Hypersonic Vehicles by : Lisa Fiorentini

Download or read book Nonlinear Adaptive Controller Design for Air-breathing Hypersonic Vehicles written by Lisa Fiorentini and published by . This book was released on 2010 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This dissertation presents the design of two nonlinear robust controllers for an air-breathing hypersonic vehicle model capable of providing stable tracking of velocity and altitude (or flight-path angle) reference trajectories. To overcome the analytical intractability of a dynamical model derived from first principles, a simplified control-oriented model is used for control design. The control-oriented model retains the most important features of the model from which it was derived, including the non-minimum phase characteristic of the flight-path angle dynamics and strong couplings between the engine and flight dynamics. The first control design considers as control inputs the fuel equivalence ratio and the elevator and canard deflections. A combination of nonlinear sequential loop-closure and adaptive dynamic inversion has been adopted for the design of a dynamic state-feedback controller. An important contribution given by this work is the complete characterization of the internal dynamics of the model has been derived for Lyapunov-based stability analysis of the closed-loop system, which includes the structural dynamics. The results obtained address the issue of stability robustness with respect to both parametric model uncertainty, which naturally arises in adopting reduced-complexity models for control design, and dynamic perturbations due to the flexible dynamics. In the second control design a first step has been taken in extending those results in the case in which only two control inputs are available, namely the fuel equivalence ratio and the elevator deflection. The extension of these results to this new framework is not trivial since several issues arise. First of all, the vehicle dynamics are characterized by exponentially unstable zero-dynamics when longitudinal velocity and flight-path angle are selected as regulated output. This non-minimum phase behavior arises as a consequence of elevator-to-lift coupling. In the previous design the canard was strategically used to adaptively decouple lift from elevator command, thus rendering the system minimum phase. Moreover, the canard input was also employed to enforce the equilibrium at the desired trim condition and to provide a supplementary stabilizing action. As a result, when this control input is not assumed to be available, the fact that the system needs to be augmented with an integrator (to reconstruct the desired equilibrium) and the non-minimum phase behavior have a strong impact on the control design. In these preliminary results the flexible effects are not taken into account in the stability analysis but are considered as a perturbation and included in the simulation model. The approach considered utilizes a combination of adaptive and robust design methods based on both classical and recently developed nonlinear design tools. As a result, the issue of robustness with respect to parameter uncertainties is addressed also in this control design. Simulation results on the full nonlinear model show the effectiveness of both controllers.

Adaptive Control of Nonminimum Phase Aerospace Vehicles

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (17 download)

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Book Synopsis Adaptive Control of Nonminimum Phase Aerospace Vehicles by : Anusha Mannava

Download or read book Adaptive Control of Nonminimum Phase Aerospace Vehicles written by Anusha Mannava and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the second part, control design for HSV is attempted through a weaker coupling, i.e. by lift control. An internal model is used for redefining tracking errors and forming a loop interconnection with pitch angle and pitch-rate. This loop generates zero dynamics which must be stabilized. The pitch dynamics are steered towards a command input by selecting the input to the internal model. The internal model is stabilized by the selection of the command input to the pitch dynamics. This successive redefinition of the regulated outputs between the nested zero dynamics is the critical design element for overall system stability. The loop interconnection between the internal model and the pitch dynamics is stabilized by a small-gain analysis. In this design, coefficients of all three-lift,drag and moment coefficients are estimated by adaptive update laws. The main contribution of this dissertation is a demonstration of adaptive control design for nonlinear nonminimum phase systems using only thrust and elevator deflection as control inputs with the air-breathing hypersonic vehicle as a case study.

Issues in Systems Engineering: 2013 Edition

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Publisher : ScholarlyEditions
ISBN 13 : 1490110860
Total Pages : 569 pages
Book Rating : 4.4/5 (91 download)

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Book Synopsis Issues in Systems Engineering: 2013 Edition by :

Download or read book Issues in Systems Engineering: 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Systems Engineering / 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Systems and Control Engineering. The editors have built Issues in Systems Engineering: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Systems and Control Engineering in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Systems Engineering: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Autonomous Safety Control of Flight Vehicles

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Publisher : CRC Press
ISBN 13 : 1000346129
Total Pages : 200 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Autonomous Safety Control of Flight Vehicles by : Xiang Yu

Download or read book Autonomous Safety Control of Flight Vehicles written by Xiang Yu and published by CRC Press. This book was released on 2021-02-12 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerospace vehicles are by their very nature a crucial environment for safety-critical systems. By virtue of an effective safety control system, the aerospace vehicle can maintain high performance despite the risk of component malfunction and multiple disturbances, thereby enhancing aircraft safety and the probability of success for a mission. Autonomous Safety Control of Flight Vehicles presents a systematic methodology for improving the safety of aerospace vehicles in the face of the following occurrences: a loss of control effectiveness of actuators and control surface impairments; the disturbance of observer-based control against multiple disturbances; actuator faults and model uncertainties in hypersonic gliding vehicles; and faults arising from actuator faults and sensor faults. Several fundamental issues related to safety are explicitly analyzed according to aerospace engineering system characteristics; while focusing on these safety issues, the safety control design problems of aircraft are studied and elaborated on in detail using systematic design methods. The research results illustrate the superiority of the safety control approaches put forward. The expected reader group for this book includes undergraduate and graduate students but also industry practitioners and researchers. About the Authors: Xiang Yu is a Professor with the School of Automation Science and Electrical Engineering, Beihang University, Beijing, China. His research interests include safety control of aerospace engineering systems, guidance, navigation, and control of unmanned aerial vehicles. Lei Guo, appointed as "Chang Jiang Scholar Chair Professor", is a Professor with the School of Automation Science and Electrical Engineering, Beihang University, Beijing, China. His research interests include anti-disturbance control and filtering, stochastic control, and fault detection with their applications to aerospace systems. Youmin Zhang is a Professor in the Department of Mechanical, Industrial and Aerospace Engineering, Concordia University, Montreal, Québec, Canada. His research interests include fault diagnosis and fault-tolerant control, and cooperative guidance, navigation, and control (GNC) of unmanned aerial/space/ground/surface vehicles. Jin Jiang is a Professor in the Department of Electrical & Computer Engineering, Western University, London, Ontario, Canada. His research interests include fault-tolerant control of safety-critical systems, advanced control of power plants containing non-traditional energy resources, and instrumentation and control for nuclear power plants.

Bio-inspired Computation in Unmanned Aerial Vehicles

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Publisher : Springer Science & Business Media
ISBN 13 : 3642411967
Total Pages : 285 pages
Book Rating : 4.6/5 (424 download)

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Book Synopsis Bio-inspired Computation in Unmanned Aerial Vehicles by : Haibin Duan

Download or read book Bio-inspired Computation in Unmanned Aerial Vehicles written by Haibin Duan and published by Springer Science & Business Media. This book was released on 2014-01-02 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bio-inspired Computation in Unmanned Aerial Vehicles focuses on the aspects of path planning, formation control, heterogeneous cooperative control and vision-based surveillance and navigation in Unmanned Aerial Vehicles (UAVs) from the perspective of bio-inspired computation. It helps readers to gain a comprehensive understanding of control-related problems in UAVs, presenting the latest advances in bio-inspired computation. By combining bio-inspired computation and UAV control problems, key questions are explored in depth, and each piece is content-rich while remaining accessible. With abundant illustrations of simulation work, this book links theory, algorithms and implementation procedures, demonstrating the simulation results with graphics that are intuitive without sacrificing academic rigor. Further, it pays due attention to both the conceptual framework and the implementation procedures. The book offers a valuable resource for scientists, researchers and graduate students in the field of Control, Aerospace Technology and Astronautics, especially those interested in artificial intelligence and Unmanned Aerial Vehicles. Professor Haibin Duan and Dr. Pei Li, both work at Beihang University (formerly Beijing University of Aeronautics & Astronautics, BUAA). Prof Duan's academic website is: http://hbduan.buaa.edu.cn

Control and Dynamic Systems V57: Multidisciplinary Engineering Systems: Design and Optimization Techniques and Their Application

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Publisher : Academic Press
ISBN 13 : 0323163092
Total Pages : 508 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis Control and Dynamic Systems V57: Multidisciplinary Engineering Systems: Design and Optimization Techniques and Their Application by : C.T. Leonides

Download or read book Control and Dynamic Systems V57: Multidisciplinary Engineering Systems: Design and Optimization Techniques and Their Application written by C.T. Leonides and published by Academic Press. This book was released on 2012-12-02 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control and Dynamic Systems: Advances in Theory and Applications, Volume 57: Multidisciplinary Engineering Systems: Design and Optimization Techniques and their Application deals with techniques used in the design and optimization of future engineering systems. Comprised of 11 chapters, this book covers techniques for improving product design quality in multidisciplinary systems. These techniques include decomposition techniques for synthesis process; optimization for aircraft systems; actuator and sensor placement; and robust techniques in system design and control process. Students, research workers, and practising engineers will find this book invaluable.

Output Feedback Control and Sensor Placement for a Hypersonic Vehicle Model

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ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Output Feedback Control and Sensor Placement for a Hypersonic Vehicle Model by : Pete Jankovsky

Download or read book Output Feedback Control and Sensor Placement for a Hypersonic Vehicle Model written by Pete Jankovsky and published by . This book was released on 2006 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper addresses issues related to output feedback control, including sensor placement, for a model of an air-breathing hypersonic vehicle. The model presents a number of control challenges, in particular because of strong couplings between the propulsive and aerodynamic forces. Because of the vehicle's low weight, slenderness, and length, the vehicle's flexibility has a large impact on stability and control of the vehicle. Two output feedback control methods are developed. One applies reconstruction of the flexible body system states, toward applications of state feedback control. The other uses a robust design that does not rely on an observer to ensure stabilization and performance throughout a given flight envelope. A rate gyroscope and an accelerometer have been modeled, incorporating the flexible effects, and strategies for sensor placement have been developed for the hypersonic vehicle model to enhance observability or to preserve certain system structures that are favorable for robust control design. Simulation results are provided to demonstrate the sensor placement strategies and output feedback control performances.

Computational and Experimental Simulations in Engineering

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Publisher : Springer Nature
ISBN 13 : 3031425154
Total Pages : 1358 pages
Book Rating : 4.0/5 (314 download)

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Book Synopsis Computational and Experimental Simulations in Engineering by : Shaofan Li

Download or read book Computational and Experimental Simulations in Engineering written by Shaofan Li and published by Springer Nature. This book was released on with total page 1358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hypersonic Vehicle Model and Control Law Development Using H(infinity) and Micron Synthesis

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ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Hypersonic Vehicle Model and Control Law Development Using H(infinity) and Micron Synthesis by :

Download or read book Hypersonic Vehicle Model and Control Law Development Using H(infinity) and Micron Synthesis written by and published by . This book was released on 1994 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Robust Autonomous Guidance

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Publisher : Springer Science & Business Media
ISBN 13 : 1447100115
Total Pages : 243 pages
Book Rating : 4.4/5 (471 download)

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Book Synopsis Robust Autonomous Guidance by : Alberto Isidori

Download or read book Robust Autonomous Guidance written by Alberto Isidori and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the reviews: "The book is an excellent combination of theory and real-world applications. Each application not only demonstrates the power of the theoretical results but also is important on its own behalf." IEEE Control Systems Magazine

Proceedings of 2016 Chinese Intelligent Systems Conference

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Publisher : Springer
ISBN 13 : 9811023352
Total Pages : 615 pages
Book Rating : 4.8/5 (11 download)

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Book Synopsis Proceedings of 2016 Chinese Intelligent Systems Conference by : Yingmin Jia

Download or read book Proceedings of 2016 Chinese Intelligent Systems Conference written by Yingmin Jia and published by Springer. This book was released on 2016-09-20 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings present selected research papers from CISC’16, held in Xiamen, China. The topics include Multi-agent system, Evolutionary Computation, Artificial Intelligence, Complex systems, Computation intelligence and soft computing, Intelligent control, Advanced control technology, Robotics and applications, Intelligent information processing, Iterative learning control, Machine Learning, and etc. Engineers and researchers from academia, industry, and government can get an insight view of the solutions combining ideas from multiple disciplines in the field of intelligent systems.

Multivariable Control of Fixed Wing Aircrafts

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ISBN 13 :
Total Pages : 265 pages
Book Rating : 4.:/5 (915 download)

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Book Synopsis Multivariable Control of Fixed Wing Aircrafts by : Kaustav Mondal

Download or read book Multivariable Control of Fixed Wing Aircrafts written by Kaustav Mondal and published by . This book was released on 2015 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses control design for fixed-wing air-breathing aircraft. Four aircraft with distinct dynamical properties are considered: a scram-jet powered hypersonic (100foot long, X-43 like, wedge shaped) aircraft with flexible modes operating near Mach 8, 85k ft, a NASA HiMAT (Highly Maneuverable Aircraft Technology) F-18 aircraft, a McDonnell Douglas AV-8A Harrier aircraft, and a Vought F-8 Crusader aircraft. A two-input two-output (TITO) longitudinal LTI (linear time invariant) dynamical model is used for each aircraft. Control design trade studies are conducted for each of the aircraft. Emphasis is placed on the hypersonic vehicle because of its complex nonlinear (unstable, non-minimum phase, flexible) dynamics and uncertainty associated with hypersonic flight (Mach $>$ 5, shocks and high temperatures on leading edges). Two plume models are used for the hypersonic vehicle an old plume model and a new plume model. The old plume model is simple and assumes a typical decaying pressure distribution for aft nozzle. The new plume model uses Newtonian impact theory and a nonlinear solver to compute the aft nozzle pressure distribution. Multivariable controllers were generated using standard weighted $H_{\inf}$ mixed-sensitivity optimization as well as a new input disturbance weighted mixed-sensitivity framework that attempts to achieve good multivariable properties at both the controls (plant inputs) as well as the errors (plant outputs). Classical inner-outer (PD-PI) structures (partially centralized and decentralized) were also used. It is shown that while these classical (sometimes partially centralized PD-PI) structures could be used to generate comparable results to the multivariable controllers (e.g. for the hypersonic vehicle, Harrier, F-8), considerable tuning (iterative optimization) is often essential. This is especially true for the highly coupled hypersonic vehicle thus justifying the need for a good multivariable control design tool. Fundamental control design tradeoffs for each aircraft are presented comprehensively for the hypersonic aircraft. In short, the thesis attempts to shed light on when complex controllers are essential and when simple structures are sufficient for achieving control designs with good multivariable loop properties at both the errors (plant outputs) and the controls (plant inputs).

Scientific and Technical Aerospace Reports

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Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: