Lunar lander trajectory controller based on orthogonal collocation optimization

• Main Authors: LIU XINGGAO, LIU PING
• Format: Patent
• Language: Chinese; English
• Published: 06.04.2018
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention discloses a lunar lander trajectory controller based on orthogonal collocation optimization. The controller is composed of a lunar lander height measurement sensor, a lunar lander speedmeasurement sensor, a lunar lander micro control unit (MCU) and an anti-propulsion engine controller. The lunar lander MCU automatically performs an internal orthogonal collocation optimization algorithm according to set height and speed parameters to obtain a trajectory optimal control strategy which enables a lunar lander to meet a specified landing condition and minimizes the fuel consumption of the anti-propulsion engine of the lander. The lunar lander MCU converts the obtained control strategy into a control instruction of the anti-propulsion engine and sends the control instruction to the controller. The trajectory optimal control strategy can be quickly obtained according to the landing height and speed states of the lunar lander. It can be ensured that the lunar lander meets a specified landing condition a