An energy optimization method for soft landing and obstacle avoidance of small celestial bodies
A technology of energy optimization and small celestial bodies, applied in the field of deep space exploration, to achieve the effect of ensuring safe implementation, reducing energy consumption, and large energy margin
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[0063] In order to verify the feasibility and beneficial effect of the method of the present invention, this embodiment takes the landing small celestial body Eros 433 as an example.
[0064] An energy optimization method for soft landing and obstacle avoidance of small celestial bodies disclosed in this embodiment includes the following steps:
[0065] Step 1: Determine the form of the energy-optimal guidance law for the soft landing of the small celestial body.
[0066] In the small celestial body inertial coordinate system, the dynamic model of the lander is
[0067]
[0068] where r=[x,y,z] T and v=[v x ,v y ,v z ] T are the position and velocity vectors, respectively;
[0069] a=[T x , T y , T z ] T are the three-axis components of the detector control force acceleration in the inertial system;
[0070] Respectively, the vector expression of gravitational acceleration of small celestial body is ω=[0 0 ω] T , take the rotation angular velocity of Eros 433 ...
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