| In 2013, the Chinese lunar exploration phase two project, Change Project started. The lunar lander carrying the unmanned lunar rover named Rabbitcame to the lunar surface with soft landingfor scientific exploration. After the Change Project, developinga manned lunar rover which can efficiently carry astronauts and accomplisha variety of detection task turned into China’s lunar exploration project’snext research priorities.According to the technical requirement of the manned lunar rover vehicle and design requirement of the suspension system, referencing for other lunar rover suspension type, a new kind of energy regenerative suspension system for manned moon landing is proposed in this paper which is based on the goal of improving the speed and recovery of vibration energy. The structure configuration of the new energy regenerative suspension system is introduced, the main components in detail design are calculated, and the working principle of energy regenerative suspension actuator is explained in detail.The 3d model of the new suspension isestablished in PROE software, the simulation analysis of statics and dynamics characteristic is carried out using the finite element analysis software ANSYS Workbench, verifyingthat the requirements of structural strength and stiffness are achieved. The multi-body dynamics model of manned lunar rover vehicle with the suspension is established using the multi-body system simulation software MSC. ADAMS, and the maneuverability of manned lunar rover, riding comfort, overturning resistance and geometry through performance is analyzed by simulation.The road excitation and LQG active controller model scheme is establishedin MATLAB/Simulink. The simulation model of a quarter moon rover with active energy regenerative suspension in a ball screw type which was established in AMESim software is import. The simulation analysis between new suspension and that without active control is carried on with the index of body acceleration, suspension dynamic deflection and wheel dynamic displacement. It is showed fromthe simulation results that the suspension’s performancewith LQG active control scheme are better than that without active control at the three performance indexes, which can improve the comfort and operation stability performance of the lunar rover. |
PDF Full Text Request