论文部分内容阅读
针对探测器在小天体表面的弹跳式运动特点,提出一种表面运动控制方法。首先基于简化的运动模型,计算出探测器进行弹跳式转移所需的初始速度;然后通过对轨道方程的线性化,基于线性时变系统的求解方程,采用脉冲控制对每次弹跳的运动轨迹进行修正,增加控制精度;并分析转移距离与弹跳次数的关系;最后,以小行星1620 Geographos作为目标小天体进行仿真分析,验证了控制算法的有效性。结果表明,该控制方法可以应用于探测器在附着到小天体表面后的弹跳转移,也适用于弱引力环境下探测器的弹跳式探测。
Aiming at the characteristics of the detector’s bouncing movement on the surface of a small celestial body, a surface movement control method is proposed. Firstly, based on the simplified motion model, the initial velocity of the detector for bounce transfer is calculated. Then, the trajectory of each bounce is controlled by pulse control based on the linearization of the orbit equation and the solving equation of the linear time-varying system Correct and increase the control precision. The relationship between the transfer distance and the number of bounces is analyzed. Finally, the simulation of the asteroid 1620 Geographos is performed to verify the effectiveness of the control algorithm. The results show that this control method can be applied to the bounce transfer of the detector after it is attached to the surface of a small celestial body. It is also suitable for the bouncing detection of a detector in a weak gravitation environment.