Author/Authors :
Hassan, L. malekeashtar university of technology - Dept of Aerospace Eng, تهران, ايران , Malaeak, M.B. sharif university of technology - Dept of Aerospace Eng, تهران, ايران , Sadati, S.H. malekeashtar university of technology - Dep t of Aerospace Eng, تهران, ايران , Ashtiani, M.A. malekeashtar university of technology - Dep t of Aerospace Eng, تهران, ايران , Karimi, J. malekeashtar university of technology - Dep t of Aerospace Eng, تهران, ايران
Abstract :
Based on the idea of Continuous Fuzzy Guidance Law (CFGL), a three-phase fuzzy guidance (TFG) law is proposed for the class of surface to air homing missiles. The current approach enables the guidance law to track a maneuvering target from the beginning of the launch phase up to the terminal one while it dynamically attempts to keep miss-distance, flight time and control effort at a minimum acceptable level. The guidance law developed here depends on four factors: line-of-sight (LOS) angle, LOS rate, LOS angular acceleration, and relative distance to the target. To show the relative superiority of the approach, the performance of the new guidance law has been compared with that of proportional navigation guidance. The results confirm the validity of the idea; as for a TFG, we get quite comparable results. The current approach also shows a relatively good robustnessfor a wide variety of flight conditions.
Keywords :
Guidance , Fuzzy , Maneuver , Target
