This paper expatiates on applying the light electricity fixed position technique to correct error margin of stepping motor changing direction, and according to aero maneuverability reasonably choosing aero flight speed adopting kind period and stepping motor starting threshold, availably increasing speed-time control accuracy of automatic parachute opener in ejection seat.
阐述了应用光电定位技术对步进电动机的换向误差进行校正,并根据飞机的机动性能合理地选择飞机的速度采样周期和步进电动机的启动门限,有效地提高了飞机弹射座椅双态自动开锁器的速度一时间控制精度。