6 results about "Simulated microgravity" patented technology

The invention provides a water floating 3D printing device and method for space additive manufacturing simulation verification, and relates to the field of space additive manufacturing. The water floating 3D printing device comprises a controller, a main mechanical arm, a 3D printing head, a microgravity printing environment simulation device, a micro mechanical arm and a sensor assembly. The microgravity printing environment simulation device comprises a water tank and a dynamic floating substrate unit. The dynamic floating substrate unit floats in the water tank to simulate a microgravity environment; the micro mechanical arm is used for regulating and controlling the nozzle position of the 3D printing head and ensuring that the nozzle is aligned with the floating substrate; and the main mechanical arm is used for moving the 3D printing head according to a preset printing path and assisting in regulating the position of the nozzle. According to the device, through a water floating method, the space microgravity environment can be effectively simulated, the micro mechanical arm and the mechanical arm of the main machine work cooperatively, and accurate and rapid printing can be achieved. According to the invention, a space-imitated environment is provided for fused deposition modeling printing, and the experiment of additive manufacturing of the space-imitated environment can be carried out on the ground.

The application discloses a microgravity simulation device and method, and relates to the technical field of ground microgravity simulation, and aims to solve the problems of high cost and short experiment duration in the prior art. The microgravity simulation device comprises a rotating driving mechanism, at least one floater and at least one container for containing a liquid medium. The rotating driving mechanism has at least one power output shaft, each floater is arranged on a corresponding power output shaft, the floater floats on the liquid medium, the center of mass of the floater is located above the liquid medium, and the distance between the geometric center of the floater and the center of mass of the floater is greater than 0. The method of the microgravity simulation device is used for simulating microgravity. The microgravity simulation device and method provided by the application are used in microgravity simulation.

This utility model discloses a backpack-type space-assisted training robotic arm, specifically relating to the field of robotic arm technology. It includes a carrying strap, an upper robotic arm, a front robotic arm body, and a hand end effector device. The carrying strap is connected to the upper robotic arm, and the upper robotic arm is connected to the front robotic arm body. The front robotic arm body also preferably has a hand end effector device at its front end. These four parts are interconnected via various telescopic shafts, and wiring is provided according to the connections of each part. This utility model employs an optimized backpack-type space-assisted training robotic arm to simulate the motion states of different masses and the interaction forces between the astronaut and the spacecraft in a simulated space operation environment on the ground. This achieves virtual operation training and a sense of presence for astronauts in a simulated microgravity environment, helping them learn how to operate objects of different masses and avoiding collisions due to operational errors.

Embodiments of the present disclosure disclose a mixed reality-based simulation of microgravity environment hand-object grasping method and device. A specific embodiment of the method includes: detecting the posture information of the hand in real time to obtain the hand posture information; detecting the collision between the hand and the object in real time to obtain the hand-object collision condition; and performing a hand-object interaction action according to the hand posture information and the hand-object collision condition. This embodiment provides a highly efficient and practical ground grasping simulation training tool for astronauts, enabling them to better prepare for space missions and ensuring that they can safely and accurately perform grasping operations in a real space environment.

This invention discloses a ground-based experimental system and method for an air-floating gravity unloading platform for satellite prototypes, comprising: an air-floating motion platform for simulating a microgravity environment; at least two modular spacecraft, each of which is mounted on a corresponding air-floating motion platform, and the modular spacecraft are provided with a controllable connection and release mechanism for realizing physical connection and separation between the modular spacecraft during the experiment; and a collaborative control and evaluation system for calculating multi-dimensional indicators for quantitatively evaluating mission effectiveness based on collected pose and motion data during or after mission execution. This invention, by building various subsystems to simulate the space environment, realizes the construction of a ground-based semi-physical simulation verification environment for modular satellites, which can effectively support the application research of modular satellite prototypes.

A cultivation method for simulated microgravity-induced reprogramming of primary cancer cells and related culture media and reagents are in the field of biotechnology. A multi-directional G-force generator is used to simulate a 10−3 g microgravity environment, inducing reprogramming of cancer / cancer-adjacent tissue cells derived from patients, maintaining stemness of primary cell populations, and achieving rapid, long-term, high-fidelity cultivation of tissue cells from patients. Using this cultivation method, 106 cells can be obtained within 7 days from a 1 mm3 tissue block acquired during surgery for drug screening. Specially formulated culture media, washing solutions, and digestion solutions are also provided, effectively solving problems of contamination susceptibility and difficult digestion of clinical samples. The established cancer cell models maintain highly similar genetic characteristics to the original tissue and can reflect differences in drug sensitivity between different patients, providing a powerful tool for precision cancer treatment.