Theoretical and Experimental Investigations on High-Precision Micro-Low-Gravity Simulation Technology for Lunar Mobile Vehicle

Author:

Hou Weijie12,Hao Yongbo3,Wang Chang2,Chen Lei4,Li Guangping2,Zhao Baoshan2,Wang Hao2,Wei Qingqing4,Xu Shuo2,Feng Kai1,Zang Libin25

Affiliation:

1. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China

2. Tianjin Key Laboratory of Microgravity and Hypogravity Environment Simulation Technology, Tianjin Institute of Aerospace Mechanical and Electrical Equipment, Tianjin 300301, China

3. Beijing Institute of Control Engineering, Beijing 100190, China

4. Beijing Key Laboratory of Intelligent Space Robotic Systems Technology and Applications, Beijing Institute of Spacecraft System Engineering, Beijing 100094, China

5. School of Mechanical Engineering, Tianjin University, Tianjin 300350, China

Abstract

With the development of space technology, the functions of lunar vehicles are constantly enriched, and the structure is constantly complicated, which puts forward more stringent requirements for its ground micro-low-gravity simulation test technology. This paper puts forward a high-precision and high-dynamic landing buffer test method based on the principle of magnetic quasi-zero stiffness. Firstly, the micro-low-gravity simulation system for the lunar vehicle was designed. The dynamic model of the system and a position control method based on fuzzy PID parameter tuning were established. Then, the dynamic characteristics of the system were analyzed through joint simulation. At last, a prototype of the lunar vehicle’s vertical constant force support system was built, and a micro-low-gravity landing buffer test was carried out. The results show that the simulation results were in good agreement with the test results. The sensitivity of the system was better than 0.1%, and the constant force deviation was 0.1% under landing impact conditions. The new method and idea are put forward to improve the micro-low-gravity simulation technology of lunar vehicles.

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry

Reference26 articles.

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3. Convergence and divergence in spherical harmonic series of the gravitational field generated by high-resolution planetary topography-A case study for the Moon;Hirt;J. Geophys. Res. Planets,2017

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5. A rough terrain traction control technique for all-wheel-drive mobile robots;Silva;J. Braz. Soc. Mech. Sci. Eng.,2010

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