Name: A High-Order, Linear Time-Invariant Model for Application to Higher Harmonic Control and Flight Control System Interaction
SKU: 59690436
Price: 45.81 EUR
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Author: Cheng, Rendy P. ; Nasa Technical Reports Server (Ntrs) ; Et Al
ISBN: 9781287224242

portada A High-Order, Linear Time-Invariant Model for Application to Higher Harmonic Control and Flight Control System Interaction

A High-Order, Linear Time-Invariant Model for Application to Higher Harmonic Control and Flight Control System Interaction

Type

Physical Book

Author

Nasa Technical Reports Server (Ntrs)

Rendy P. Cheng

Publisher

Bibliogov

Language

English

Pages

200

Format

Paperback

Dimensions

24.6x18.9x1.1 cm

Weight

0.37 kg.

ISBN13

9781287224242

Synopsis "A High-Order, Linear Time-Invariant Model for Application to Higher Harmonic Control and Flight Control System Interaction"

This research describes a new methodology for the extraction of a high-order, linear time invariant model, which allows the periodicity of the helicopter response to be accurately captured. This model provides the needed level of dynamic fidelity to permit an analysis and optimization of the AFCS and HHC algorithms. The key results of this study indicate that the closed-loop HHC system has little influence on the AFCS or on the vehicle handling qualities, which indicates that the AFCS does not need modification to work with the HHC system. However, the results show that the vibration response to maneuvers must be considered during the HHC design process, and this leads to much higher required HHC loop crossover frequencies. This research also demonstrates that the transient vibration responses during maneuvers can be reduced by optimizing the closed-loop higher harmonic control algorithm using conventional control system analyses.

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A High-Order, Linear Time-Invariant Model for Application to Higher Harmonic Control and Flight Control System Interaction - Cheng, Rendy P. ; Nasa Technical Reports Server (Ntrs) ; Et Al

Synopsis "A High-Order, Linear Time-Invariant Model for Application to Higher Harmonic Control and Flight Control System Interaction"

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