89 results about "Simulated microgravity" patented technology

The invention provides a six-dimensional position and orientation precision test method of a space mechanical arm based on an air flotation system, relating to a position and orientation precision test method of a space mechanical arm. In order to imitate a microgravity environment so as to test the position and orientation precision of the space mechanical arm at the ground, the method mainly comprises the following steps of: spreading the space mechanical arm and arranging the space mechanical arm on the air flotation system to imitate the microgravity environment; measuring and calculating the transformation matrix of a second target relative to a first target on an installation flange of the mechanical arm; measuring and calculating the transformation matrix of a third target relative at the end of the mechanical arm relative to the second target; combining with the two position and orientation matrixes to obtain a coordinate transformation matrix of an end tool coordinate system E under a mechanical arm installing coordinate system M so as to test the position and the orientation of the end of the space mechanical arm; comparing the tested position and orientation with the theoretical position and orientation to obtain the position and orientation precision of the end of the space mechanical arm. The method imitates and reappears the space microgravity environment with the air flotation system, and guarantees the ground position and orientation precision tested by the developed space mechanical arm.

The invention relates to an autonomous landing navigation control ground test verification system under a small celestial body (asteroid and comet) microgravity environment and belongs to the technical field of ground semi-physical simulation. The autonomous landing navigation control ground test verification system under the microgravity environment specifically comprises a small celestial body surface topography simulation part, a base part, a lander mounting platform and an external measurement part, wherein the lander mounting platform comprises a mounting platform body, multiple flotation air legs, one small-thrust nozzle, wherein the multiple flotation air legs are fixed at the bottom of the mounting platform body in a regular polygon shape, so as to realize a high-pressure air cushion, so that frictionless motion is realized; the small-thrust nozzle is arranged in the inverse direction of to-be-simulated microgravity and used for generating a thrust so as to serve as the microgravity borne by a lander; the external measurement part is used for measuring space states such as the position and posture of the lander mounting platform relative to the small celestial body surface topography simulation part. The system can simulate different microgravities by virtue of changing the thrust of the nozzle and has the advantages of simplicity in test, rapidness, and the like.

The invention relates to a ground microgravity equivalent experimental device and method of a six-freedom-degree spatial mechanical arm. The equivalent experimental device comprises a bearing device A, a support air foot device B and a roller air foot device C. The bearing device A realizes simulated microgravity environment equivalent motion of joints of the mechanical arm b1, the roller air foot device C supports motion in 3 freedom degrees and rolling motion in one freedom degree of the plane in the simulated microgravity environment of a supported arm rod, and the support air foot device B supports motion in three freedom degrees in the plane in the simulated microgravity environment of the supported joints. The equivalent experimental device is used for test, the motion states of the joints of the spatial mechanical arm and information of sensors and devices on a satellite load installation plate are detected to effectively simulate the work state of the spatial mechanism arm in the weight loss environment on the ground, the problem that a traditional ground simulated experimental device of the spatial mechanical arm is high in interference or few in freedom degree is solved, and influence on other satellite loads and devices in the motion process can be also simulated.

The invention relates to a membrane bioreactor device for the efficient culture of suspended biological cells and in particular relates to a membrane bioreactor used in the microgravity environment and the simulated microgravity environment. The membrane bioreactor is mainly used in the microgravity environment and used as a ground simulated microgravity experimental device to perform the long-term culture of suspended biological cells and the biological effect research and the efficient preparation method research of recombinant protein. The membrane bioreactor comprises a bioreactor main body, an air supply system, a liquid filling system, a stirring system, a parameter measurement and control system, an exhaust system and a sampling system, wherein the parameter measurement and controlsystem comprises a pH value parameter measurement and control system, a temperature parameter measurement and control system, a dissolved oxygen parameter measurement and control system and a pressure parameter measurement and control system. The membrane bioreactor device can be utilized to realize the long-term and efficient culture of suspended biological cells in the microgravity environment and the ground simulated microgravity environment, the multi-parameter real-time detection and the automatic control.

The invention provides a space follow-up system and relates to equipment for carrying out flight testing on aircrafts in microgravity environment. The invention aims at providing the space follow-up system for carrying out flight testing on aircrafts in the simulated microgravity environment. The space follow-up system comprises two vertical support frames (37) and a horizontal support frame (38), wherein the horizontal support frame is fixedly arranged on the two vertical support frames, two second track beams (14) are arranged on the horizontal support frame, a high-speed heavy load running gear synchronous transmission system is arranged above the second track beams, a vertical follow-up system is arranged above the high-speed heavy load running gear synchronous transmission system, the vertical follow-up system is hoisted with a space floating type fast follow-up device through a vertical traction rope (39), a space follow-up constant tension macro micro control system and a target aircraft (40) are sequentially arranged under the space floating type fast follow-up device, and the space floating type fast follow-up device is connected with six space attitude stabilizing systems through horizontal traction ropes (41).

The invention discloses a test device for realizing continuous production of fresh plant food under the simulated space microgravity effect, and mainly aims to make a research on the problem of supplying the fresh plant food to astronauts in a long-time and long-distance deep space manned spacecraft (such as a Mars landing spacecraft). The device consists of a trumpet-shaped variable-diameter light shade, a mobile circular planting module, a nutrient solution supplying pipeline and a power rotary unit. By using the device, the test research on high-efficiency continuous growth of different types of fresh plant food (such as leaf vegetables, root-stem vegetables and solanaceous vegetables) under the simulated space microgravity effect can be performed, and the test basis is provided for solving the problems of supplying the fresh plant food to the astronauts and making the astronauts physically and mentally healthy in the deep space manned spacecraft.

The invention relates to a physical system simulating molten metal droplet 3D printing in a microgravity environment and a printing method. A static electric field generation positive electrode applies a static electric field generation voltage, and a static electric field is generated between two electrodes; and a molten metal spray nozzle is located on one side of the static electric field generation positive electrode. A 3D deposition platform is located at the tail end of the area of the static electric field. When molten melt droplets pass by a charging electrode and then initially enterthe area of the static electric field, the movement direction of the molten melt droplets are in the horizontal state. In the ground environment, through spray of a small bond number of molten melt droplets, accelerated flight (matching of Froude number) and deposition and loading of an antigravity static electric field, physical simulation of the processes of microdroplet spraying, flight and deposition deformation under different microgravity conditions is achieved, and therefore the physical system simulating molten metal droplet 3D printing in the microgravity environment provides an effective means for earlier-stage technology development and later-period formation technology ground verification of the molten metal droplet 3D printing in the microgravity environment.

The invention discloses a drop tower frictional wear testing device and method. The drop tower frictional wear testing device comprises a load loading mechanism, a static test sample clamping mechanism, a movable test sample clamping mechanism, a friction power device and a rack which is fixedly mounted in a drop cabin of a drop tower, wherein the load loading mechanism, the static test sample clamping mechanism, the movable test sample clamping mechanism and the friction power device are arranged in sequence. The drop tower frictional wear testing device has the advantages of simple structure, relatively high precision, stable structure and strong anti-impact capability; various index designs of the drop tower are completely referred and the device can be mounted in the drop cabin to carry out a micro-gravity drop tower frictional wear testing experiment; a micro-gravity environment can be relatively really simulated and influences, caused by micro-gravity, on frictional wear on the mechanism are explored; the blank of a mechanism frictional wear test under a current real micro-gravity environment is made up and influences, caused by the micro-gravity, on abrasion of a space mechanism are explored better.

The invention relates to a microgravity effect ground simulation method based on magnetic-fluid mixed floating. The technical feature is that: based on the buoyancy of liquid, a mixed suspension mode of electromagnetic and liquid floating is used to provide means for accurately simulating space microgravity effects. Among them, most of the gravity of the object is overcome by the buoyancy of the liquid (coarse trim), and the remaining very small part of the gravity is overcome by fine-tuning the electromagnetic force (fine trim), so as to achieve the purpose of precise trim. At the same time, the adjustment of the levitation height of the object under the microgravity effect simulation environment controls the magnitude and direction of the electromagnetic force by controlling the current intensity or other electromagnetic field parameters, so as to realize the arbitrary change of the levitation height and position of the object under the weightlessness effect.

The invention relates to an analog micro weight space crafter land emitting testing device that comprises the bracket, emission barrel, fixture, erecting linear guide track at one side of the bracket, sliding emission platform on the linear guiding track, with the emission barrel fixed on the sliding emission platform through the fixture, with buffer set under the platform. It has imitable analog micro weight environment, being able to finish the traditional land emitting, with instant parameter testing function, integrating the testing device with the emission platform, strong in impact resistance ability.

The invention discloses a system and method of regulation and control of postures and landing experiments for a space robot simulating a gecko, and belongs to the field of robots. The system mainly comprises a rotary landing panel (2), three-dimensional force-sensor array (1) distributed on the rotary landing panel, a robot imitating the gecko, high-speed video cameras, a computer control terminal (18), a force-sensor data acquisition system (19), and a wireless data transmission module (20). Through the system and method disclosed by the invention, the regulated and controlled postures, and the landing experiments of the space robot can be effectively simulated under the microgravity environment, and a novel method for the experiments of posture control and landing collision of the space robot is provided.

The invention relates to a novel magnesium alloy composite material preparation method. The novel magnesium alloy composite material preparation method is characterized in that a novel magnesium alloy composite material is prepared through the steps that aluminum, zinc, manganese, neodymium, cerium and magnesium are proportionally mixed, nickel coated nano-SiC particles are added into a magnesium alloy melt, an electromagnetic field is applied at the same time, the nickel coated nano-SiC particles are evenly scattered in the melt through electromagnetism simulated microgravity, an electric field is applied to a casting ingot after pouring to refine grains, and finally the novel magnesium alloy composite material is subject to equal channel angular pressing. The neodymium element in the novel magnesium alloy composite material has the dispersion strengthening effect, and formed metallic compounds can prevent grain boundary sliding; the cerium element can improve the alloy structure and refine the grains; a microgravity field enables the nickel coated nano-SiC particles to be evenly scattered in the melt; the electric field can increase the degree of supercooling of the melt, nucleation barriers are reduced, and the grains are refined; and the equal channel angular pressing can further refine the grains, and the synthetic mechanical property of the composite material is improved.

The invention relates to a preparation method of a three-dimensional histioid cardiac muscular tissue for studying a simulated microgravity effect, in particular relating to a preparation method of a three-dimensional histioid cardiac muscular tissue microballoon, aiming at solving the problems that according to the current cell three-dimensional culture method for studying the simulated microgravity effect, the cytodex microcarrier material is toxic and is not conducive to generation of cardiocytes, a great number of cells are needed for culture, cell harvesting is difficult, the cells are prone to interference of shearing force when being cultured in a klinostat and the continual contraction time of the cardiocytes is short. The method comprises the following steps: preparing a mixed solution; preparing cardiocytes; preparing a cell suspension, adding the cell suspension to a divalent positive ion solution to obtain microballoons; culturing the mircoballons in a culture medium to form the three-dimensional histioid cardiac muscular tissue. The three-dimensional histioid cardiac muscular tissue prepared by the method prepared by the invention can be cultured on a long-term basis,needs no passage and can maintain contraction of the cardiac muscular tissue for a long time. The method is applied to the research fields of space biology, aerospace medicine and tissue engineering.

The invention belongs to the technical field of aerospace medicine and particularly relates to a device capable of simulating microgravity to perform physiological experiments. The technical scheme includes that a multi-function integration microgravity physiological effect simulation bed comprises a microgravity physiological effect simulation bed (1) and a bedside management system (2). According to the multi-function integration microgravity physiological effect simulation bed, a bedstead can be continuously adjusted at an angle ranging from -6 degrees to 20 degrees, various gravity environments can be simulated, daily living self-care conditions are provided for subjects lying in bed, relevant data are automatically measured and recorded, computer networking management of a plurality of multi-function integration microgravity physiological effect simulation beds is achieved, large-scale experiments are convenient to perform, and working strength of nursing staff and working staff on spot is obviously reduced.

The invention discloses a ground calibration device for an on-orbit mass measuring instrument, which includes a microgravity environment simulation device and a calibration process state monitoring system. The microgravity environment simulation device includes a high tower suspension mechanism and an adjustable horizontal workbench. The calibration process status monitoring system includes a suspension rope tension monitoring module, a measured object deflection angle monitoring module and a measured object acceleration monitoring module. The present invention offsets the gravity by means of high-altitude suspension, simulates the microgravity environment on the horizontal surface near the suspension balance point, and monitors the calibration process in real time through the built calibration process state monitoring system to judge whether the calibration process meets the set boundary conditions , the indication value of the on-orbit mass measuring instrument corresponding to the measurement process that satisfies the set boundary conditions is regarded as the effective value of the ground calibration, which provides a new solution for the ground calibration of the on-orbit mass measuring instrument. While standardizing the calibration operation, the present invention realizes the effective calibration of such equipment in the ground environment, and provides measurement guarantee for the equipment used in such special environment.

The invention discloses a ground simulative experiment device and method for micro-gravity flow boiling critical heat flux density, and the device comprises a test tube, a flow regulating valve, a flow meter, a pump, a condenser, a pre-heater, a buffer tank, a speed regulator, a voltage stabilizer, a temperature controller, a heating surface, a power supply and a temperature collector. The simulative experiment method is that the critical heat flux density of the flow boiling heat transfer under microgravity conditions can be replaced by the critical heat flux density range measured under normal gravity conditions and corresponding to the experimental conditions that theta is equal to 315 degrees and theta is equal to 135 degrees. The ground simulative experiment device and method for micro-gravity flow boiling critical heat flux density provided by the invention, compared with the direct micro-gravity experiment and traditional ground simulation method, are rather simple in device structure, very convenient to operate and good in economy, can satisfy experimental test of different experiment conditions, can accurately, conveniently and economically simulate the critical heat fluxdensity under microgravity conditions on the ground, and significantly expand the application range compared with the conventional simulation method.