CAJ | 학술논문

航空相机执行机构的核心是像面扫描系统，要求高扫描精度、高扫描频率、体积小、结构简单，否则成像模糊、成像帧频低。国内外低精度的扫描机构采用旋转电机外加凸轮、齿轮、涡轮蜗杆等机械传动机构将旋转运动变为直线扫描运动，搭建的像面扫描系统体积大、结构复杂、智能化程度低与未来相机的发展趋势不吻合。设计的新型高频高速像面扫描结构，直线往复扫描运动执行机构选用音圈电机，像面扫描方式为矩形扫描方式。为满足指标要求，采用音圈电机持续力控制和滞后超前控制相结合的控制策略。实验表明，线速度103 mm/s，线性行程0.2 mm时，实现了扫描频率15 Hz，稳速精度±0.2%，满足了工程要求。
항공상궤집행궤구적핵심시상면소묘계통，요구고소묘정도、고소묘빈솔、체적소、결구간단，부칙성상모호、성상정빈저。국내외저정도적소묘궤구채용선전전궤외가철륜、치륜、와륜와간등궤계전동궤구장선전운동변위직선소묘운동，탑건적상면소묘계통체적대、결구복잡、지능화정도저여미래상궤적발전추세불문합。설계적신형고빈고속상면소묘결구，직선왕복소묘운동집행궤구선용음권전궤，상면소묘방식위구형소묘방식。위만족지표요구，채용음권전궤지속력공제화체후초전공제상결합적공제책략。실험표명，선속도103 mm/s，선성행정0.2 mm시，실현료소묘빈솔15 Hz，은속정도±0.2%，만족료공정요구。
Image scanning system is the core sub-system of aerial camera. It requires high scanning accuracy, high scanning frequency, small size, simple structure, otherwise, the image is blur and image frame rate is low. Low-precision scanning mechanism abroad changes the rotary motion into linear scanning movement using rotary motor plus cams, gears, worm and other mechanical transmission mechanism. The image plane scanning system is bulky, has complex structure and low intelligence. It does not match the trends of future camera. Voice coil motor is chosen to produce linear reciprocating motion for the new design high-frequency and high-speed image scanning structure. Image scanning mode was rectangular scanning. In order to achieve high control accuracy and high repetition rate, intelligent control method with continuous force control of VCM was introduced. Image scanning frequency can reach 15 Hz, scanning speed accuracy can be in 0.2%, the linear travel was at least 0.2 mm, linear scanning speed is 103 mm/s. The experimental results shows that it is stronger in robustness, better in adaptability, the quality and effect of control are satisfactory. This result can meet the specific requirements of the project.