Automatic tuning of gain-scheduled autopilot for computer simulations

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Authors
  1. Lestage, R.
  2. Lauzon, M.
  3. Jeffrey, A.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN)
Abstract
Missile autopilot tuning is closely related to airframe dynamic properties and to the missile flight speed and altitude. During the development of a missile model, the airframe dynamics properties (mass, moment of inertia and aerodynamic properties) are likely to evolve as design changes are made in the airframe or when the aerodynamics parameters are updated with data of improved accuracy. When these changes occur, a new tuning of the autopilot ginas is required. To facilitate this repetitive task, a procedure automating this tuning has been developed specifically to tune an utopilot with gains scheduled as functions of misisle speed and flight altitude. The procedure tunes the autopilot according to a given specification, and for the curent physical properties of the airfframe and its aerodynamics. Specific tuning procedures have been developed and are presented for two lateral acceleration autopilots and for one rool autopilot. Guidelines for choosing the tuning specification are given. Finally, the procedure is demonstrated by means of a six-degree-of-freedom air-to-air missile simulation.

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Keywords
Missile model;Autopilot;Automatic tuning;Missile simulation;Linear airfame;6DOF simulation model
Report Number
DRDC-VALCARTIER-TR-2001-230 — Technical Report
Date of publication
29 May 2002
Number of Pages
63
DSTKIM No
CA020900
CANDIS No
517629
Format(s):
Hardcopy;Document Image stored on Optical Disk

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