TY - GEN
T1 - Autonomous guidance and control with hazard avoidance for a Lunar lander
AU - Curti, Fabio
AU - Torre, Francesco
AU - Ansalone, Luigi
PY - 2015
Y1 - 2015
N2 - This work deals with an algorithm based on a linear programming approach to establish the guidance and the control of a Lunar Lander in its final descent phase. The linear programming problem is described and set; in our method the soft-landing manoeuvre depends on the initial state of the lander, the desired landing site and the time of flight needed to complete the manoeuvre. Then, the Pulse Width Modulation is used to make the control sequence obtained exertable by a non-throttleable engine and a strategy is proposed to modify the results of the Pulse Width Modulation in order to achieve a safe landing. A method is shown to take into account the variation of mass of the lander during the descent and a proposal for an algorithm for the estimation of the time of flight is presented. The proposed guidance and control algorithm is tested to evaluate its performances, including cases when a retargeting is needed.
AB - This work deals with an algorithm based on a linear programming approach to establish the guidance and the control of a Lunar Lander in its final descent phase. The linear programming problem is described and set; in our method the soft-landing manoeuvre depends on the initial state of the lander, the desired landing site and the time of flight needed to complete the manoeuvre. Then, the Pulse Width Modulation is used to make the control sequence obtained exertable by a non-throttleable engine and a strategy is proposed to modify the results of the Pulse Width Modulation in order to achieve a safe landing. A method is shown to take into account the variation of mass of the lander during the descent and a proposal for an algorithm for the estimation of the time of flight is presented. The proposed guidance and control algorithm is tested to evaluate its performances, including cases when a retargeting is needed.
UR - https://www.scopus.com/pages/publications/84994201323
UR - https://www.scopus.com/pages/publications/84994201323#tab=citedBy
M3 - Conference contribution
AN - SCOPUS:84994201323
T3 - Proceedings of the International Astronautical Congress, IAC
SP - 5801
EP - 5816
BT - 66th International Astronautical Congress 2015, IAC 2015
PB - International Astronautical Federation, IAF
T2 - 66th International Astronautical Congress 2015: Space - The Gateway for Mankind's Future, IAC 2015
Y2 - 12 October 2015 through 16 October 2015
ER -