Methodologies For The Direct Digital Control Of Highly Flexible Vehicles
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Methodologies For The Direct Digital Control Of Highly Flexible Vehicles
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Author : Duane T. McRuer
language : en
Publisher:
Release Date : 1985
Methodologies For The Direct Digital Control Of Highly Flexible Vehicles written by Duane T. McRuer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Large space structures (Astronautics) categories.
This report presents methodologies for the direct digital control of vehicles with flexible modes. The techniques yield robust control system designs with modest or minimal requirements on the number of sensors and control actuators. the digital system techniques used include primarily the w-transforms for direct design and stability assessment, and the 'hybrid' frequency response, for assessment and understanding of digital system peculiarities. The 'sawtooth Bode' is used as the basic control system design concept. These three elements are applied to several examples, including a comprehensive case study for a fighter aircraft flight and flexible mode control system. Both continuous and discrete system designs are considered and the continuous system characteristics are contrasted with an optimal control design. This comparison pinpoints some of the features needed to make optimal control procedures more practical and mature for flexible vehicle control applications. An important step is taken in this direction by determining the nature of performance criteria which yield, for an example case, a highly robust, extremely simple controller derived from an optimal control procedure.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1994
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aeronautics categories.
Methodologies For The Direct Digital Control Of Highly Flexible Vehicles
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Author :
language : en
Publisher:
Release Date : 1985
Methodologies For The Direct Digital Control Of Highly Flexible Vehicles written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
This report presents methodologies for the direct digital control of vehicles with flexible modes. The techniques yield robust control system designs with modest or minimal requirements on the number of sensors and control actuators. the digital system techniques used include primarily the w-transforms for direct design and stability assessment, and the 'hybrid' frequency response, for assessment and understanding of digital system peculiarities. The 'sawtooth Bode' is used as the basic control system design concept. These three elements are applied to several examples, including a comprehensive case study for a fighter aircraft flight and flexible mode control system. Both continuous and discrete system designs are considered and the continuous system characteristics are contrasted with an optimal control design. This comparison pinpoints some of the features needed to make optimal control procedures more practical and mature for flexible vehicle control applications. An important step is taken in this direction by determining the nature of performance criteria which yield, for an example case, a highly robust, extremely simple controller derived from an optimal control procedure. Keywords: Digital flight control systems; W- transforms; Hybrid frequency response; Flexible vehicle control; Large space structures; Comparisons of optimal and classical control.
Nasa Sp
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Author :
language : en
Publisher:
Release Date : 1991
Nasa Sp written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aeronautics categories.
Proceedings Of The American Control Conference
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Author :
language : en
Publisher:
Release Date : 1986
Proceedings Of The American Control Conference written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Automatic control categories.
Aeronautical Engineering
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Author :
language : en
Publisher:
Release Date : 1991
Aeronautical Engineering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aeronautics categories.
Proceedings Of The 1986 American Control Conference
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Author :
language : en
Publisher:
Release Date : 1986
Proceedings Of The 1986 American Control Conference written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Automatic control categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1985
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Science categories.
Digital Control Of Highly Augmented Combat Rotorcraft
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Author : Mark B. Tischler
language : en
Publisher:
Release Date : 1987
Digital Control Of Highly Augmented Combat Rotorcraft written by Mark B. Tischler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Automatic pilot (Helicopters) categories.
Digital Control Of Highly Augmented Combat Rotorcraft
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Author :
language : en
Publisher:
Release Date : 1987
Digital Control Of Highly Augmented Combat Rotorcraft written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Proposed concepts for the next generation of combat (scout/attack) helicopters are to be embodied in a complex, highly maneuverable, multiroled vehicle with avionics systems which are as important to mission success as the airframe itself. Single pilot and nap-of-the-Earth operations require handling qualities which minimize the involvement of the pilot in basic stabilization tasks. To meet these requirements will demand a full authority, high-gain, multimode, multiply-redundant, digital flight-control system. The gap between these requirements and current low-authority, low-bandwidth operational rotorcraft flight-control technology is considerable. this research aims at smoothing the transition between current technology and advanced concept requirements. The report: (a) extensively reviews the state of the art of high-bandwidth digital flight-control systems; (b) illustrates the important concepts in design and analysis of high-gain, digital systems with a detailed case study involving a current rotorcraft system. Frequency-domain methods for design and analysis are stressed in this report as essential for the practical implementation of high-gain control systems for rotorcraft. Approximate and exact methods are explained and illustrated for treating the important concerns which are unique to digital systems. Proposed specifications and flight-test data concerning the handling qualities of scout/attack rotorcraft imply restrictions on the maximum effective time delay which must be carefully considered in the design process.