Guiding method for fixed time of power descending section of tethered lander and processing and storing device

The invention relates to a tethered lander power descending section fixed time guidance method and a processing and storage device. The method comprises the following steps: firstly, establishing a dynamic model of a tethered lander power descending section; on the basis, a nonsingular terminal sliding mode surface is designed; in order to eliminate the influence of unknown interference, an adaptive law is designed, and accurate guidance under external interference is realized; in addition, in order to prevent the lander from colliding with the surface of the planet to realize soft landing, a synchronous time convergence method is adopted. According to the method, sliding mode control, a self-adaptive technology and a synchronization time convergence method are combined, accurate guidance under interference is guaranteed, the lander can be prevented from colliding, and the fixed-time soft landing effect of the planet surface is achieved. 本发明涉及一种绳系着陆器动力下降段固定时间制导方法及处理和存储器，首先建立了绳系着陆器动力下降段的动力学模型；在此基础上，设计了非奇异终端滑模面