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http://dx.doi.org/10.5139/JKSAS.2014.42.4.317

Homing Loop Design for Missiles with Strapdown Seeker  

Hong, Ju-Hyeon (Department of Aerospace Engineering, Inha University)
Ryoo, Chang-Kyung (Department of Aerospace Engineering, Inha University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.42, no.4, 2014 , pp. 317-325 More about this Journal
Abstract
For a missile with a strapdown seeker, line-of-sight rate for guidance is obtained by compensating the look angle rate from the strapdown seeker by the body angular rate from rate gyros. However, the body angular rate from rate gyros has different signal properties when it compared to the body angular rate implicitly included in the look angle rate. Typically this discrepancy causes instability of homing loop. In this paper, we propose a design method of homing loop where seeker delay is compulsively placed in the output signal of the rate gyros for accordance of both body rates. Also, PID control loop is considered for obtaining stabilized guidance command even though uncertainties of seeker delay is associated. The stability analysis for the linear homing loop before and after the compensation has been done. The stability and performance of the designed terminal homing loop is verified through full nonlinear 6-DOF simulations.
Keywords
Strapdown seeker; Homing loop; PID controller;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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