Space freighters for the 21st century

Koelle, H. H.

doi:10.1016/0094-5765(93)90030-z

Cited by 3 publications

(1 citation statement)

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“…Planetary exploration began at the end of the 1950s, and various planetary detectors were launched around the late 1980s and early 1990s [1]. These detectors took photographs of planets, detected planetary atmospheric temperature and pressure, and performed a soft landing and rover exploration on the surface of a planet [2].…”

Section: Introductionmentioning

confidence: 99%

Research on the step-climbing performance of a multi-constraint quadrilateral suspension rover based on the λ chain mechanism

Yang

Chen

Wang

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Step-climbing performance is an important index when evaluating the comprehensive performance of a planetary rover. Based on a comprehensive analysis of the existing planetary rover, the step-climbing performance was determined with regard to the suspension configuration of the rover. On the basis of the configuration of the parallel frame spring fork suspension, a multi-constraint quadrilateral suspension (MCQS) that is based on the λ (lambda) chain mechanism was proposed. The trajectory model of the end point of the λ linear mechanism was established, along with a mathematical model of the interaction between each wheel and step in the step-climbing process. A simulation model of the MCQS rover was constructed, and the step-climbing performance of the MCQS rover on a vertical obstacle was analyzed. The simulation results showed that the MCQS rover can climb over a step obstacle with a height larger than twice the wheel radius, and that it had superior integrated mobility. A prototype was developed based on the design and simulation, and some step-climbing experiments were performed to verify the performance of the MCQS rover.

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Section: Introductionmentioning

confidence: 99%

Research on the step-climbing performance of a multi-constraint quadrilateral suspension rover based on the λ chain mechanism

Yang

Chen

Wang

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Potter¹

2000

The Environmentalist

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Non-singular Terminal sliding mode control for landing on asteroids based on RBF neural network

Liu

et al. 2014

2014 International Joint Conference on Neural Networks (IJCNN)

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A method of non-singular Terminal sliding mode control was proposed for landing asteroids with uncertainty and strong nonlinearity based on RBF neural network. The dynamics of the detector in the landing environment was analyzed, and the nominal trajectory guidance method based on optimal polynomial was designed, by which the consumption of fuel was suboptimal. Controller was designed using non-singular Terminal sliding mode. The influences caused by unknown disturbance and uncertainty during landing phase was compensated by RBF neural network real-time compensation, which could effectively suppress the influence of external disturbance and weaken the system chattering. Simulation results show that the proposed method was effective.

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Space freighters for the 21st century

Cited by 3 publications

References 0 publications

Research on the step-climbing performance of a multi-constraint quadrilateral suspension rover based on the λ chain mechanism

Research on the step-climbing performance of a multi-constraint quadrilateral suspension rover based on the λ chain mechanism

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Non-singular Terminal sliding mode control for landing on asteroids based on RBF neural network

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