Design And Simulation Of An Air Floating Platform With Zero Gravity Selfadjusting With the rapid development of space exploration, the performance of spacecraft is increasingly demanded. So, on the ground, we need to simulate the zero gravity environment and perform performance tests on the satellite antenna deployment system. In response to this demand, a kind of zero gravity selfadjusting air floating platform has been designed. The composition and principle of the air floating platform have been elaborated, and the performance of the platform has been measured and analyzed. The platform can realize automatic levelling and own high levelling precision and fast speed. It is a good simulation of the ground zero gravity environment and can effectively evaluate the simulation results.

Spinup Control of Tethered Space Station for Artificial Gravity Task * In order to overcome the problems caused by the zero gravity of space, artificial gravity space station has been widely concerned in recent years. The tetherbased space station relies on the centrifugal force generated by its rotation around the centroid to simulate gravity, which greatly reduces various problems caused by the zero gravity environment, and has many advantages such as low spin speed, flexibility, and scalability. For the spinup process of the tethered space station, a dynamic model of the tethered space station based on the Lagrange method is established firstly. Then, the control law using sliding mode theory and the dynamic inversion is proposed. Different spinup schemes are designed to test the control law. Simulation results shows that whether the systemxe2x80x99s tether retraction rate is adjustable or not, the angular velocity of the system can smoothly reach the desired value to produce the expected level of artificial gravity.