58 results about "Electrostatic levitation" patented technology

An electrostatic interaction system includes a first structure having a first fixed electrostatic charge and a second structure having a second fixed electrostatic charge. The polarity of the first and second fixed electrostatic charges determines a positional relationship of the first structure to the second structure.

The invention provides a device of a material sample solidification test for simulating a microgravity environment. The device comprises a vacuum vessel (1), an electrostatic suspension control and release device (2), a heater (3), a temperature measuring instrument (4), a short drop pipe (5), a recovery tray (6) and a camera (7), wherein the vacuum vessel (1) is a vacuum closed vessel; the electrostatic suspension control and release device (2) is arranged on top inside the vacuum vessel (1) and is used for controlling a material sample to stay in a suspension state or a dropping state; the material sample drops into the recovery tray (6) through the short drop pipe (5), and the recovery tray (6) is arranged on the bottom of the vacuum vessel (1); the heater (3), the temperature measuring instrument (4) and the camera (7) are arranged outside the vacuum vessel (1), and the heater (3) is used for heating the sample to be in a molten state; the temperature measuring instrument (4) is used for measuring the temperature of the material sample; the temperature measuring instrument is connected with the electrostatic suspension control and release device (2) through a signal wire.

The invention relates to an electrostatic suspension type space-based super quiescent platform system, which comprises a quiescent reference system, a loading platform, an on-planet electrode chamber, a capacitance detection circuit, a digital control system, a drive circuit and a micro-thruster, wherein the quiescent reference system is fixedly linked with the loading platform into a whole through a vacuum chamber base; the on-planet electrode chamber is fixed on a satellite body; the loading platform is suspended in the on-planet electrode chamber and driven by the one-planet electrode chamber through electrostatic force to travel by tracking a reference mass block; the capacitance detection circuit is capable of acquiring the relative position of the loading platform in the on-planet electrode chamber; control signals of the electrostatic force and the micro-thruster are generated by the digital control system; the electrostatic force is loaded by the drive circuit to the on-planet electrode chamber to drive the loading platform to track the reference mass block, so that the primary drag-free control is realized; the satellite body and the on-planet electrode chamber are driven by the micro-thruster to track the loading platform, so that the secondary drag-free is realized. The space-based super quiescent platform system has a simple structure, is precise and controllable in driving force, low in rigidity, realizes zero rigidity coupling and effective suppression on micro-vibration in high or low frequency band.

Disclosed is a method for producing a barium titanium oxide single crystal piece with a given structure using a containerless solidification process, which comprises the steps of preparing a material made of a barium titanium oxide, controlling the material to be in a levitated state within a levitation furnace, melting the levitated material using a laser, and solidifying the molten material while maintaining the levitated state. In a specific embodiment, a spherical sample having a composition of BaTiO3 and a weight of about 20 mg is subjected to a rapid solidification and melting process (temperature gradient: about 700 K / sec) 3 times while levitating the sample in 4.5 atm of air atmosphere using an electrostatic levitation furnace. Then, the re-molten sample is maintained at a temperature just below the melting point of the sample for a given time, and then rapidly cooled at a cooling rate of 300 K / sec to obtain a transparent blue barium titanium oxide single crystal. The single crystal exhibits innovative dielectric characteristics having a large relative permittivity (100,000 or more at room temperature) and a low dielectric loss. In addition, the single crystal has excellent temperature stability allowing the relative permittivity to be gently reduced in the range of room temperature to 70 K.

The invention relates to a static suspension six-axis micro accelerometer and a manufacturing method thereof. The micro accelerometer has a sandwich type three-layer bonding structure which consists of a lower stator, a suspension mass block and an upper stator, wherein in the upper stator in the lower stator, glass is used as a substrate; the suspension mass block is positioned in a bonding cavity between the upper stator and the lower stator; the suspension mass block is positioned in the center of the bonding cavity and does not contact the upper stator or the lower stator to translate along the X axis, Y axis and Z axis or rotate on the X axis, Y axis and Z axis; and the center of the suspension mass block is an original point O of an inertia coordinate system OXYZ, and the OZ direction is perpendicular to a plane on which the upper stator and the lower stator are positioned. The static suspension micro accelerometer which is provided with the square mass block, has a six-axis acceleration measuring function and is high in sensitivity is manufactured on the basis of a non-silicon micro-electromechanical system (MEMS) process. The method is easy, convenient, flexible and low inmanufacturing cost.

Disclosed is a static electricity supported suspending electromagnetic induction rotary micro gyroscope which comprises a upper stator, a rotor and a lower stator. Wherein the upper and lower stators are individually installed with an adding moment detecting electrode, a public electrode and a rotary driving coin, and the stators are connected together via side electrode and form a circle type cavity in which located a circle type rotor to form a gyroscope system. The invention employs the circle type rotor to perform detection and adding moment control via the side electrode which can add lateral rigidity of the system. A barrier cylinder is used to prevent the rotor contacting the upper and lower stators and to increase stability of the system.

A middle and high layer atmosphere density separation type detector comprises a universal module with a microsatellite platform, and is characterized by further comprising a spherical structural body shell used for simplifying an atmosphere resistance analysis model, an accelerometer, a GPS receiver and an attitude control system, the surface of the special structural body shell is covered with a solar cell, the accelerometer is arranged in the spherical structural body shell, the accelerometer is formed by distributing 4 to 6 static suspension type accelerometers around the axis, the accelerometer is used for measuring the atmosphere resistance, the GPS receiver is arranged in the spherical structural body shell and used for tracking and monitoring the track speed and the position of a microsatellite, the attribute control system is arranged in the spherical structural body shell and used for controlling the attribute of the microsatellite so as to keep the spinning of the satellite stable and ensure the correct directing of a GPS receiver antenna and a data transmission antenna.

This is a static suspension rotator mini inertial sensor and its productive method. It comprises lower lining layer, the middle metal constructive layer and upper lining layer. The middle metal constructive layer comprises metal rotator and arouncd it there are a rotator cavity and radial electric poles, the lower and upper lining layer are bonded with the radial electric poles separately to form the rotator cavity. The wheel type metal rotator locates at the center of the rotator cavity. Between the lower and upper axial electric poles, which on the lower and upper lining layer, and between the rounded radial electric poles there are axial electric pole gap and radial electric pole gap. This mini inertial sensor's productive method contains: The working order of lower lining layer, and middle metal constructive layer, and upper lining layer, and the working order of bonded together, or include the working order of lower lining layer, upper lining layer, radial electric pole, metal rotator working order and mini assemble working order and bonded working order, to give out the productive method which base to UV-LIGA technology.

The invention provides a superconducting magnetic levitation and static suspension mixing suspension supporting arrangement, and six support modules (9) are symmetrically distributed on a reference axis of orthogonal coordinate system whose original point is the center of a rotor chamber (8). A superconductive rotor (10) is located in a rotor chamber (8). A magnetic field generated by a superconducting coil (11) after excitation enters from a gap between a superconductive shaping block (12) and an inner superconducting ring (13) into a gap between the superconductive shaping block and the superconductive rotor (10), and then returns from a gap between the superconductive shaping block (12) and an outer superconducting ring (15) as well as the lower part of the superconducting coil (11) to the gap between the superconductive shaping block (12) and an inner superconducting ring (13), thereby forming a closed magnetic circuit. A support electrode (14) is enclosed by an inner superconducting ring (13). A magnetic field generated by the superconducting coil (11) produces a magnetic repulsion for the superconductive rotor (10), and a supporting voltage applied by a support electrode (14) produces for an electrostatic attraction for the superconductive rotor (10), and the total suspension force which is applied to the superconductive rotor (10) is the resultant force of the magnetic repulsion and the electrostatic attraction.

A five freedom static electricity suspended variable capacity type micro - static electricity motor is used for MEMS systematical micro - execution unit and micro - inertia sensitive element etc field. It contains upper stator, lower stator, rotor, inner stator and outer stator, and suspend control system, wherein the upper and lower stator and inside and outside stator to form one closed intracavity, rotor suspend in annular intracavity geometrical center, utilizing axial direction radial boosting electrode to apply electrostatic force, through detecting capacitor differential variation between electrode and rotor to realize, through suspend control system to realize five freedom active static electricity suspension displacement detection, utilizing rotor salient pole and stator driving electrode to apply driving torque. Said invention provided micro - static electricity motor can restrict rotor all freedom of movement except rotating around the Z axis, not only eliminating mechanical contact induced moment of friction and raising working lives, but also providing larger driving moment and radial overload capacity, to obtain very high rotor speed.

The invention relates to a spatial inertial sensor ground test device which comprises proof mass, a capacitive displacement transducer, a controller, a static execution mechanism and a suspension mechanism; and a suspension point between the suspension mechanism and the proof mass is positioned at the centroid of the proof mass. The test device realizes test on the performance of a static suspension accelerometer on three rotational freedom, can simulate the space environment more truly on the ground, and provides more comprehensive test on the performance of the static suspension accelerometer.

An electrostatic levitation furnace is improved by providing three pairs of electrodes opposed to each other respectively on three axes perpendicularly intercepting each other at a position where the sample is to be levitated in the vacuum chamber, and disposing a plurality of access ports, which are directed to the position of the sample, to the vacuum chamber tree-dimensionally, whereby the accessible direction against the sample is diversified, it becomes possible to improve the degree of freedom in distribution of various apparatuses and easily cope with increase of apparatuses.

The invention discloses a precision horizontal adjusting device for electrostatic suspended accelerometer ground experiments tests. The device comprises an upper flat plate with a fine adjusting function, a middle flat plate with a rough adjusting function and a lower flat plate where a base is installed. A 1# cross shaft connection mechanism is connected between the upper flat plate and the middle flat plate, a 2# cross shaft connection mechanism and a linear actuator are arranged between the middle flat plate and the lower flat plate, the upper flat plate is provided with a 1# online position measuring sensor, the middle flat plate is provided with a 2# online position measuring sensor, an executing mechanism line displacement actuator and a pretension spring, one end of the pretension spring is in rigid connection with the edge of the upper flat plate, the other end of the pretension spring is in rigid connection with the middle flat plate, the 1# cross shaft connection mechanism isin rigid connection with the middle flat plate through a 2# connection block, the 2# cross shaft connection mechanism is in rigid connection with the middle flat plate through a 3 # connection block,and the 2 # cross shaft connection mechanism is in rigid connection with the lower flat plate of a 4# connection block. The problems that overall leveling precision is not high, and the stability ofa leveling mechanism is poor are solved, the precision horizontal adjusting device has the advantages of being good in stability and high in platform adjusting precision, and the adjusting precision of an adjusting platform is ensured.

A system and a method for screening of nucleation tendency of a molecule, such as a macromolecule, based on acoustic, electrostatic or hybrid acoustic / electrostatic levitation of a droplet for optimizing crystallization conditions for said molecule. This allows for a controlled approach to determination of supersaturation and allows for screening of crystal nucleation conditions within minutes and hours instead of months and years with a minute amount of starting material compared to conventional crystallization methods.

The invention relates to a micro gyro driven by static suspension corona to rotate. The micro gyro comprises upper and lower stators, a micro rotor and a peripheral structure which form a cage structure, and the rotor is arranged in the middle of the cage structure. The stators comprise rotary axial suspension and detection electrodes and public electrodes and are fixedly connected to a substrate; and because of the action of electrostatic force, the micro rotor suspends between the upper and lower stators and has an annular shape, the inside of the micro rotor has tooth-shaped electrodes, while the outside is distributed with a surrounding structure which is radial suspension detection electrodes. The micro gyro has simple structure, provides a corona driving rotary structure, does not need to arrange rotary electrodes on the stators, and can realize the rotation of the rotor at constant high speed without detecting rotating speed. Suspension control of the rotor and position detection can be realized through axial and radial suspension detection electrodes. The micro gyro is made by adopting MEMS micromachining, is easy to implement, and has the characteristics of small size, light weight, low cost, high precision and low power consumption.

The invention relates to a multi-station sample sending and recycling device used for electrostatic suspension and a using method thereof. A first stepping motor is connected with a sample plate through a metal rod; a sample transport rod is connected with a second stepping motor, so that the sample transport rod moves in the vertial direction; the processing steps are as follows: closing a cavity, vacuumizing, transporting target samples from the initial position of the sample plate to a suspension starting position; after finishing electrostatic suspension experiment for the target samples,recycling the target samples. According to the invention, by reasonably designing a mechanical transport mechanism and a control process, the multi-station sample transport device and the method are provided, sending and recycling a plurality of samples in the closed cavity are achieved. The multi-station sample sending and recycling device provided by the invention is characterized in that numerous samples can be processed, the processing sequence is flexible, the processing procedure has no impacts on vacuum degree, and the adaptability is wide.

A reverse magnetic suspension rotor electrostatic driving micro gyro belongs to micro-electromechanical technology field. The invention is composed of an upper stator, a rotor and a lower stator. It takes upper and lower stators rotating capacity polar plates to drive variable-capacitance electrostatic rotating. Charging magnetism to four sectors of public capacity polar plate construction composed of upper and lower stators which are made of permanent-magnet materials and capacity polar plates of upper and lower stators to detect z axle linear acceleration and wind x, y axles angular acceleration. Utilize diamagnetic materials to make rotor chip. Provide a reverse magnetic suspension rotor electrostatic driving micro gyro adopting combination of permanent-magnet and diamagnetic materials to realize self-stabilization suspension, which leaves out static suspension controlling units providing suspension electrostatic coils or capacity polar plates etc. It can detects x, y, z axles linear acceleration and x, y axles angular acceleration simultaneously, which can realize precision positioning of objects, detect linear and angular acceleration or navigate.

The present invention discloses a seismic omnidirectional vector electrostatic suspended detector which comprises a tetrahedron hollow structure, an inner layer hollow base and an outer layer hollow base. The inner layer hollow base and an outer layer hollow base are inside and outside the tetrahedron hollow structure with the same distance and have the same structure and different sizes. Each surface of the tetrahedron hollow structure has a solid part and a hollow part. The solid part is an isosceles triangle, and a quadrangle formed by the angular bisectors of two angles of each surface is connected to a pass surface center point. The hollow part is two triangles, and the centers of pass surfaces formed by the angular bisectors of two angles are connected. According to the seismic omnidirectional vector electrostatic suspended detector, a space full vector detection structure is designed, thus the novel seismic omnidirectional vector detector technology is realized, the attributes of the frequency, amplitude, phase, vibration direction and the like of a seismic wave field and especially the full information detection of the divergence and rotation of a wave power field can be completed.

The invention relates to a numerical calculation method for heat transfer of electrostatically suspended liquid alloys, which relates to a calculation method for heat transfer of liquid alloys with regular and irregular rotation symmetrical structures under electrostatically suspended conditions. The finite volume method is used to solve the heat transfer equation of the irregular liquid alloy vianumerical iteration, and the change of the temperature field in the liquid alloy along with time is obtained. The invention solves the problem that the electrostatically suspended liquid alloy droplet temperature measurement is difficult and the error is large, and the heat transfer calculation model can only get the temperature and the change condition of the alloy droplet particle. By using thenumerical calculation method for heat transfer of electrostatically suspended liquid alloys, (1) the alloy droplet heat transfer with regular and irregular rotationally symmetrical structure can be obtained under the electrostatic suspension condition; and (2) the abundant and accurate heat transfer information, such as temperature distribution, temperature gradient and cooling rate, of the liquid alloy is also obtained.

The invention relates to a floater suspension structure of a liquid floated gyroscope. The floater suspension structure of the liquid floated gyroscope comprises a gyroscope mounting shell and a floater assembly, wherein an electrode assembly is mounted in the gyroscope mounting shell; the electrode assembly is cylindrical; four electrodes are arranged at each of the upper part and the lower part of the electrode assembly; the four electrodes on the upper layer and the four electrodes in the lower layer are symmetrically arranged; the floater assembly is coaxially arranged in the electrode assembly; a gap is defined by the floater assembly and the electrode assembly; suspension is filled between the floater assembly and the electrode assembly. The floater suspension structure of the liquid floated gyroscope is scientific in design, reasonable in structure and especially applicable to the high-precision gyroscope; due to the adoption of an electrostatic suspension bearing manner, the real suspension of the floater assembly of the liquid floated gyroscope in the suspension can be realized; the influence on the performance of the gyroscope due to mechanical contact between the floater assembly and a bearing is effectively eliminated; meanwhile, as the structure is simple, the floater suspension structure of the liquid floated gyroscope is extremely strong in practicability.

The present invention is an electrostatic levitation furnace which is provided with a vacuum chamber, main electrodes opposed to each other within the vacuum chamber, an auxiliary electrode moving a sample levitated by an electrostatic field generated between the main electrodes, and a laser irradiator irradiating a laser beam on a sample displaced at a predetermined position, wherein a plurality of the main electrodes are arranged at proper intervals in a vertical direction to form electrostatic field generating interspaces between the adjacent the main electrodes respectively, auxiliary electrodes are arranged to correspond to each of the electrostatic field generating interspaces, the laser irradiators are arranged both of above the main electrode positioned uppermost and under the main electrode positioned lowest so as to be opposed to each other coaxially, and the main electrode positioned midway between the uppermost one and the lowest one has a through-hole on optical path of laser beam which a sample can be passed through. The electrostatic levitation furnace, for example, when two species of samples are fused together, regardless of whether or not the samples are conductors, has the function of melting the samples being levitated individually and fusing them together while maintaining each of the temperatures of the samples, and consequently this enables to actualize a fusion in a state excluded external interference.

The invention relates to a zero-rigidity vibration isolating method for an electrostatic suspension type two-stage non-towing platform. Through introducing displacement of a suspension load platform,the output of a suspension control algorithm is subjected to nonlinear modulation to compensate static electricity changes caused by displacement, so that static negative rigidity is eliminated, and suspension vibration isolation with zero rigidity is achieved. According to the method, absolute zero-rigidity vibration isolation can be realized, the vibration energy in the wide frequency band rangecan be effectively inhibited, and the zero rigidity is constructed, so that a two-stage system is enabled to be completely decoupled, platform systems can be independently designed and do not influence each other, the stability is better, and the method is simple in process.

The present invention is an image pickup device provided with a CMOS camera which is provided with a telecentric lens to photograph a sample put in a levitation state at the center inside an electrostatic levitation furnace, a metal halide light source which is positioned on the opposite side of the sample from the CMOS camera to irradiate light with a wavelength of 400 to 450 nm toward the sample, and a digital signal processor which performs image processing for enhancing an edge of an image captured by the CMOS camera in real time to output a position of center of gravity of the sample put in the levitation state, where a blue filter is attached to the CMOS camera. Even if the sample becomes incandescent due to a high temperature, contrast of the sample against a background can be obtained by the image pickup device. In addition, position information required for levitation control of a sample with a complicated shape is outputted by the image pickup device so that an instant at which the sample with a complicated shape changes to a spherical shape one can be specified visually.

The invention provides an anti-gravity 3D printer comprising a base, an electrostatic suspension generator and a 3D printer body. The electrostatic suspension generator and the 3D printer body are distributed at the both ends of the upper surface of the base, and connected by a connecting wire; one side of the 3D printer body is provided with a printing room, and one side of the opening end of theprinting room is provided with a hinged door; the other side of the opening end of the printing room is provided with a first control panel, and one side of the outside surface of the electrostatic suspension generator is provided with a second control panel; the first control panel is provided with a touch screen and a template, and databases can be established in the touch screen and the template, so the electrostatic suspension generator can be controlled quickly and easily; and an electrostatic suspension field is generated in the printing room, so that different kinds of models can be printed by printing heads in the printing room. The anti-gravity 3D printer provided by the invention has the advantages of high printing efficiency and utilization rate of materials, simple printing process and high molding precision.

The present invention discloses an orthogonal electrostatic suspension accelerometer sensitive structure. The structure comprises a sensitive mass block and electrodes, the sensitive mass block comprises an X-axis measurement tube, a Y-axis measurement tube and a Z-axis measurement tube which are respectively extended along an X axis, a Y axis and a Z axis, there are the plurality of electrodes which are in non-contact installation on the sensitive mass block to apply electrostatic suspension force and feedback control force to the sensitive mass block to allow the sensitive mass block to be asuspension state. According to the orthogonal electrostatic suspension accelerometer sensitive structure, and the sensitive mass block forms a hollow structure to allow the electrodes in the same support voltage to provided large support forces to enlarge the measuring range. Besides, the structure is compact in the whole structure to achieve synchronous measurement of three-axes accelerated speeds, high measurement integration, good implementation of synchronism of each-axis measurement and control and simplify the measurement and control circuit.

The invention relates to an electrostatic suspended gyroscope for physics experiment classroom demonstration, and belongs to the field of physics experiment instrument design in the middle school class. The electrostatic suspended gyroscope is composed of gyro emitter and electrostatic suspension table. The problems of single experiment effect, low experiment rate and difficulty in arousing students' learning interest in present electrostatic phenomenon teaching can be solved. The electrostatic suspended gyroscope is characterized in that the gyro made of the lightweight insulating material issuspended over the suspension table with the same electrostatic charge by means of the electrostatic force through frictional electrification. The repulsive action of the same charge, the phenomenonof frictional electrification and the effect of moment of inertia on the stability of the object can be successfully demonstrated, and the relationship between the electrostatic force and the distancebetween the charges can also be qualitatively explained. The electrostatic suspended gyroscope has the advantages of simple structure, easy operation, high interestingness in the experimental phenomena, sufficient attraction for classroom demonstration and arousing students' strong desire for knowledge and curiosity.