{'fraction_non_alphanumeric': 0.017804154302670624, 'fraction_numerical': 0.005934718100890208, 'mean_word_length': 5.192660550458716, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Composite axis control system development of airborne electro-optical platform

In this paper, the composite axis control system is developed to solve the pointing jitter problem of the electro-optical platform in complex airborne vibration environment. The proposed composite axis control system consists of the gimbaled mirror and piezoelectric fast steering mirror. Robust H∞ control is employed to enhance the control performance. The pointing and scanning accuracy of the system are verified by experiments. The experiment results show that the pointing jitter of the optical axis is attenuated by 93% and the scanning error is less than 3.7% of the scanning amplitude.