Model identification and closed-loop Confirmation for opto-electronic platform of seeker

A mathematical model of seeker opto-electronic platform is the basis for researching performance, designing a servo control system and simulating. Focusing on high frequencies of mechanical resonant, restriction of gimbaled axis rotation, a new model identification method was proposed under the pseudo-random invert-M-sequences. The testing signal, data acquisition, the calculating of frequency response, and least square identification were investigated. The realized steps are explicitly illustrated, and the testing example is given in this paper, the results confirm that the proposed method is effective and practical.