NDLI: Integrator windup protection-techniques and a stovl aircraft engine controller application

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Integrator windup protection-techniques and a stovl aircraft engine controller application

Content Provider	NASA Technical Reports Server (NTRS)
Author	Narayanaswamy, S. KrishnaKumar, K.
Copyright Year	1997
Description	Integrators are included in the feedback loop of a control system to eliminate the steady state errors in the commanded variables. The integrator windup problem arises if the control actuators encounter operational limits before the steady state errors are driven to zero by the integrator. The typical effects of windup are large system oscillations, high steady state error, and a delayed system response following the windup. In this study, methods to prevent the integrator windup are examined to provide Integrator Windup Protection (IW) for an engine controller of a Short Take-Off and Vertical Landing (STOVL) aircraft. An unified performance index is defined to optimize the performance of the Conventional Anti-Windup (CAW) and the Modified Anti-Windup (MAW) methods. A modified Genetic Algorithm search procedure with stochastic parameter encoding is implemented to obtain the optimal parameters of the CAW scheme. The advantages and drawbacks of the CAW and MAW techniques are discussed and recommendations are made for the choice of the IWP scheme, given some characteristics of the system.
File Size	2432913
Page Count	99
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19970041176
Archival Resource Key	ark:/13960/t7xm37w1g
Language	English
Publisher Date	1997-06-01
Access Restriction	Open
Subject Keyword	Aircraft Propulsion And Power Controllers Stovl Aircraft Stochastic Processes Oscillations Integrators Feedback Control Aircraft Engines Flight Control Steady State Genetic Algorithms Errors Protection Fighter Aircraft Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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