Modified guidance law based on a sliding mode controller for a missile guidance system/Modificirani zakon navodenja utemeljen na regulatoru kliznog rezima za sustav vodenja projektila

• Published in: Tehnički vjesnik p. 639
• Main Authors: Alrawi, Ali Amer Ahmed, Graovac, Stevica, Ahmad, R. Badlishah, Rahman, Mijanur
• Format: Journal Article
• Language: English
• Published: University of Osijek 01-06-2016
• Subjects: Analysis; Guidance systems; Guided missiles; Sliding mode control; Malaysia
• ISSN: 1330-3651
• DOI: 10.17559/TV-20130625173047

In this paper, a modified guidance and control sliding mode controller (MGCSMC) method is proposed in a guided missile system. The modified sliding mode controller (MSMC) algorithm is adopted to enable the missile to reach the desired target within a short period of time. The target always makes high manoeuvres when the missile is close to it. This issue has been treated in guidance and control (G&C) by using a MSMC instead of the traditional method such as proportional navigation method (PN).Theoretical analysis is conducted to reduce the miss-distance and chattering phenomenon in SMC. Simulation of MGCSMC compared with PN method shows an improvement of about 80 %, 47 % and 20 % for the chattering, miss-distance and finite time, respectively. Furthermore, for the high-altitude target, the MGCSMC improves the acceleration and flight angle of the missile by approximately 65 %, and achieves 100 % accuracy, whereas in PN method only 60 % accuracy is achieved under the same conditions.