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31 results about "Acoustic radiation pressure" patented technology
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Acoustic radiation pressure is the apparent pressure difference between the average pressure at a surface moving with the displacement of the wave propagation (the Lagrangian pressure) and the pressure that would have existed in the fluid of the same mean density when at rest. Numerous authors make a distinction between the phenomena of Rayleigh radiation pressure and Langevin radiation pressure.
Particle Analyzing Systems and Methods Using Acoustic Radiation Pressure
ActiveUS20090029870A1Material analysis using sonic/ultrasonic/infrasonic wavesMagnetic measurementsAcoustic radiation forceAcoustics
Owner:LIFE TECH CORP
Particle Imaging Systems and Methods Using Acoustic Radiation Pressure
ActiveUS20090048805A1Material analysis using sonic/ultrasonic/infrasonic wavesMaterial analysis by electric/magnetic meansParticle imagingAcoustic radiation force
Owner:LIFE TECH CORP
Particle Quantifying Systems and Methods Using Acoustic Radiation Pressure
ActiveUS20090042310A1Radiation pyrometryMaterial analysis using sonic/ultrasonic/infrasonic wavesAcoustic radiation pressurePhysics
Owner:LIFE TECH CORP
Method and apparatus for the ultrasonic actuation of the cantilever of a probe-based instrument
The cantilever of a probe-based metrology instrument such as an AFM is deflected by directing a beam of ultrasonic energy at the cantilever to apply ultrasonically generated acoustic radiation pressure to the cantilever. The energy is generated by an ultrasonic actuator such as a ZnO transducer driven by a power source such an RF signal generator. The transmitted beam preferably is shaped by focusing, collimation, or the like so that it impinges at least primarily on a region of interest of the cantilever such as the free end. The ultrasonic actuator produces a much better controlled force on the cantilever than can be achieved through the use of a traditional piezoelectric actuator and, accordingly, produces a response free of spurious effects (at least when the cantilever is operating in liquid). It also has a frequency bandwidth in the MHz range.
Owner:GEORGIA TECH RES CORP +1
Particle Fusing Systems and Methods Using Acoustic Radiation Pressure
ActiveUS20090042239A1Animal cellsMaterial analysis using sonic/ultrasonic/infrasonic wavesAcoustic radiation forceAcoustics
Owner:LIFE TECH CORP
Apparatuses, systems, methods, and computer readable media for acoustic flow cytometry
ActiveCN102762990AHigh Throughput AnalysisQuick analysisMaterial analysis by optical meansParticle flowTransducer
A flow cytometer includes a capillary having a sample channel; at least one vibration producing transducer coupled to the capillary, the at least one vibration producing transducer being configured to produce an acoustic signal inducing acoustic radiation pressure within the sample channel to acoustically concentrate particles flowing within a fluid sample stream in the sample channel; and an interrogation source having a violet laser and a blue laser, the violet and blue lasers being configured to interact with at least some of the acoustically concentrated particles to produce an output signal.
Owner:LIFE TECH CORP
Method and apparatus for the ultrasonic actuation of the cantilever of a probe-based instrument
InactiveUS20030041669A1NanotechAnalysing solids using sonic/ultrasonic/infrasonic wavesMetrologyUltrasonic actuator
The cantilever of a probe-based metrology instrument such as an AFM is deflected by directing a beam of ultrasonic energy at the cantilever to apply ultrasonically generated acoustic radiation pressure to the cantilever. The energy is generated by an ultrasonic actuator such as a ZnO transducer driven by a power source such an RF signal generator. The transmitted beam preferably is shaped by focusing, collimation, or the like so that it impinges at least primarily on a region of interest of the cantilever such as the free end. The ultrasonic actuator produces a much better controlled force on the cantilever than can be achieved through the use of a traditional piezoelectric actuator and, accordingly, produces a response free of spurious effects (at least when the cantilever is operating in liquid). It also has a frequency bandwidth in the MHz range.
Owner:GEORGIA TECH RES CORP +1
Ultrasonic conveying device
ActiveCN105151780AAvoid pollutionAvoid scratchesCharge manipulationNon-mechanical conveyorsAcoustic radiation pressureUltrasound
The invention discloses an ultrasonic conveying device. The ultrasonic conveying device comprises an ultrasonic generation device, a vibrating plate and an adsorption mechanism, wherein the vibrating plate comprises a first surface and a second surface which are arranged oppositely; the ultrasonic generation device is arranged to be close to the first surface; a conveyed object is arranged on the second surface; the ultrasonic generation device is used for emitting ultrasonic waves; the ultrasonic waves are continuously emitted between the vibrating plate and the conveyed object to generate acoustic radiation pressure for lifting the conveyed object, and the conveyed object and the second surface are made to be separated; the adsorption mechanism is arranged close to at least one side of the vibrating plate or arranged opposite to the second surface, and the adsorption mechanism is used for adsorbing and driving the conveyed object to move in the conveying direction. In this way, it is ensured that the conveyed object does not directly make contact with the conveying device, and the conveying device is prevented from being polluted or scratched.
Owner:WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
Features of Airborne Ultrasonic Fields
PendingUS20210397261A1Reduce Harmonic DistortionReduce impactInput/output for user-computer interactionSound producing devicesAcoustic energyEnergy flux
A method for specifying desired quantities of the energy flux of the combined waves of acoustic radiation pressure to apply producing a mid-air haptic pushing force, which has the effect of simultaneously reducing the harmonic distortion present is described. Further, a method for communicating only the summaries of acoustic field contributions at the required locations in the form of summed portions of the relatively small matrix whose row and column count depend only on the control point count is described. Further, phased arrays of ultrasonic speakers can produce a relatively large amount of acoustic energy which is usually directed in a specific direction or focused to a particular point depending on the application of the array. Further, to allow the system to be driven more strongly than usual, the complex-valued linear system that governs the drive signal to each control point is solved twice. Further, to achieve mid-air haptics with high precision the radiation pressure generated must be modelled accurately.
Owner:ULTRALEAP LTD
Method and apparatus for the ultrasonic actuation of the cantilever of a probe-based instrument
InactiveUS20030041657A1NanotechAnalysing solids using sonic/ultrasonic/infrasonic wavesMetrologyUltrasonic actuator
The cantilever of a probe-based metrology instrument such as an AFM is deflected by directing a beam of ultrasonic energy at the cantilever to apply ultrasonically generated acoustic radiation pressure to the cantilever. The energy is generated by an ultrasonic actuator such as a ZnO transducer driven by a power source such an RF signal generator. The transmitted beam preferably is shaped by focusing, collimation, or the like so that it impinges at least primarily on a region of interest of the cantilever such as the free end. The ultrasonic actuator produces a much better controlled force on the cantilever than can be achieved through the use of a traditional piezoelectric actuator and, accordingly, produces a response free of spurious effects (at least when the cantilever is operating in liquid). It also has a frequency bandwidth in the MHz range.
Owner:GEORGIA TECH RES CORP
Alignment-tolerant lens structures for acoustic force actuation of cantilevers
InactiveUS6990853B2Spread the spectrum of acoustic radiationReduce resonance effectNanotechUsing optical meansAuditory radiationFrequency spectrum
In accordance with one aspect of the present invention, a cantilever of a probe-based instrument is deflected by directing a beam of ultrasonic acoustic energy at the cantilever to apply acoustic radiation pressure to the cantilever. The energy is generated by an acoustic actuator. The transmitted beam preferably is focused using a cylindrical lens, providing a beam tightly focused in one dimension and unfocused in a second dimension. In accordance with another aspect of the present invention, a power source such as an RF signal generator is operated so as to spread the spectrum of acoustic radiation on a time scale that is short or comparable to the acoustic roundtrip time. Such a design diminishing the resonance effects and sensitivity to spacing between the cantilever and the acoustic source.
Owner:PALO ALTO RES CENT INC
Alignment-tolerant lens structures for acoustic force actuation of cantilevers
InactiveUS20060075807A1Spread the spectrum of acoustic radiationReduce resonance effectNanotechAnalysing solids using sonic/ultrasonic/infrasonic wavesAuditory radiationFrequency spectrum
In accordance with one aspect of the present invention, a cantilever of a probe-based instrument is deflected by directing a beam of ultrasonic acoustic energy at the cantilever to apply acoustic radiation pressure to the cantilever. The energy is generated by an acoustic actuator. The transmitted beam preferably is focused using a cylindrical lens, providing a beam tightly focused in one dimension and unfocused in a second dimension. In accordance with another aspect of the present invention, a power source such as an RF signal generator is operated so as to spread the spectrum of acoustic radiation on a time scale that is short or comparable to the acoustic roundtrip time. Such a design diminishing the resonance effects and sensitivity to spacing between the cantilever and the acoustic source.
Owner:PALO ALTO RES CENT INC
Ultrasonic assisting high-sensitivity detection system for pollutants in fluid and working method of ultrasonic assisting high-sensitivity detection system
InactiveCN105891416AIncreased sensitivityWon't breakAnalysing gaseous mixturesParticle size analysisAuditory radiationInformation processing
The invention discloses an ultrasonic assisting high-sensitivity detection system for pollutants in fluid and a working method of the ultrasonic assisting high-sensitivity detection system. The ultrasonic assisting high-sensitivity detection system comprises an ultrasonic transducer. The ultrasonic transducer is provided with electrodes, an acoustic radiation plate is fixedly arranged on the surface of the ultrasonic transducer, a reflection plate is arranged below the acoustic radiation plate, a radiation layer is formed between the acoustic radiation plate and the reflection plate, and a sensor is arranged at the radiation layer and connected with a computer through a signal processing conversion device. A laser irradiation device and a transmission light receiving device are symmetrically arranged on the left side and the right side outside the radiation layer, and a scattered light receiving device is arranged in the front of the radiation layer or on the back of the radiation layer. The laser irradiation device, the transmission light receiving device and the scattered light receiving device are connected with a control and information processing system. The system utilizes acoustic flow, acoustic radiation pressure and acoustic vibration produced by resonance of the ultrasonic transducer and can not damage components of the pollutants, the detection precision of the sensor and a laser fine particle detection device can be improved exponentially, cost is greatly reduced, and the detection precision is greatly improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Particle control method
ActiveUS20180099259A1Change outputProcess control/regulationMechanical apparatusAcoustic radiation forceUltrasonic vibration
A particle control method is provided which can prevent an extremely small quantity of particles descending on a stream of a laminar flow in a clean zone through which the laminar flow flows as in a RABS or isolator device from descending to a specific position or can guide it so as to descend to the specific position by controlling movement of the particles. A particle descent position is separated away from a board surface of the oscillation board by using an acoustic radiation pressure generated by prompting ultrasonic vibration of the oscillation board disposed with a board surface substantially in parallel with a flow direction of the laminar flow.
Owner:AIREX
Device and method for tomographically visualizing viscoelasticity of tissue
PendingUS20200077897A1Analysing solids using sonic/ultrasonic/infrasonic wavesOrgan movement/changes detectionDisplay deviceEngineering
A device according to an embodiment includes an optical system employing the OCT, and tomographically visualizes the viscoelasticity of tissue of an object. The device includes an optical mechanism that guides light from a light source to the tissue of the object to scan the tissue, a loading device that applies deformation energy to the tissue, a control computation unit that computes tomographic distribution of the viscoelasticity of the tissue by controlling driving of the loading device and the optical mechanism and processing an optical interference signal from the optical system on the basis of the driving, and a display device that displays the viscoelasticity of the tissue in a form of tomographic visualization. The loading device is a non-contact loading device that loads acoustic radiation pressure in the tissue by outputting ultrasonic waves toward a focus point set in the object.
Owner:MEIJO UNIVERSITY
Automatic analyzer
InactiveUS7955557B2Highly reliable result of analysisEfficiently agitatedShaking/oscillating/vibrating mixersLevel controlAcousticsAcoustic radiation pressure
Multiple piezoelectric elements 35 are arranged in a row along the top of liquid level in the reaction vessel 11. An ultrasonic reflecting material 38 is installed on the bottom of the portion of the heat insulating bath 12 where heat insulating medium 13 is stored. A lateral ultrasonic wave 9b is generated on the lower side is generated by actuation of the piezoelectric element 35. Wave 9b is reflected by the ultrasonic reflecting material 38. As a lower ultrasonic wave 8 advances along the wall surface of the reaction vessel, it collides with the specimen liquid level, thereby causing a portion of the liquid level closer to the piezoelectric element 35 to be raised. When the lateral ultrasonic wave 9a is applied to this portion, it reaches the inclined portion of the raised liquid level of the specimen. Swirling flow by agitation 36 is produced by the acoustic radiation pressure of the ultrasonic wave. The specimen and reagent are mixed and agitated by this swirling flow.
Owner:HITACHI LTD
Non-contact ultrasonic motor of bowl-type traveling wave mode ball rotors
InactiveCN102158125ACompact structureHigh precisionPiezoelectric/electrostriction/magnetostriction machinesAuditory radiationNon-contact ultrasound
The invention discloses a non-contact ultrasonic motor of bowl-type traveling wave mode ball rotors, belonging to the field of micromotors. The non-contact ultrasonic motor mainly comprises ball rotors, bowl type stators, annular piezoelectric ceramics, elastic cushions and supporting devices. When the piezoelectric ceramics are electrified with a specific alternating-current voltage in an ultrasonic frequency domain, the parts that the bowl type stators are matched with the ball rotors form travelling waves so as to induce travelling wave sound fields between the rotors and the stators. Acoustic radiation pressures in the travelling wave sound fields are utilized to suspend the ball rotors, thus the generated acoustic viscous forces are used to drive the rotors to rotate. The ultrasonic motor is the non-contact ultrasonic motor, is simple and compact in structure and low in cost, is easy to process and assemble and the like.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Ultrasonic standing wave fire extinguishing system
Owner:SHANGHAI JIAOTONG UNIV
Continuous decontamination device
ActiveCN113646010AShort time processingConcrete playLavatory sanitoryMechanical vibrations separationControl cellEnvironmental engineering
Provided is a continuous decontamination device which uses a decontamination agent such as hydrogen peroxide, which has been widely used in recent years, without using a high-priced electron accelerator, and is capable of achieving of treatment in a short amount of time while achieving a uniform decontamination level at each section and thereby is capable of batch treatment of articles to be decontaminated. The continuous decontamination device is provided with a device body that has a decontamination region and an aeration region, a conveyance means that conveys an article, a mist supply means, a mist control means, and an aeration means. The mist supply means converts the decontamination agent into a decontamination agent mist and supplies the same into the decontamination region. The mist control means is provided with a vibration board disposed in the vicinity of an inner wall of the decontamination region and causes the vibration board to ultrasonically vibrate to generate an acoustic flow formed by ultrasonic waves in a perpendicular direction from the board face. By causing a pressing force from the acoustic radiation pressure to act on the decontamination agent mist supplied into the decontamination region, the decontamination agent mist is concentrated on the outer surface of the article that is conveyed inside the decontamination region by the conveyance means.
Owner:AIREX
Ultrasonic-assisted high-sensitivity detection system for pollutants in fluid and its working method
InactiveCN105891416BIncreased sensitivityWon't breakAnalysing gaseous mixturesParticle size analysisInformation processingEngineering
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
A Hybrid Suspension Disc Non-contact Ultrasonic Motor
ActiveCN105406762BIncrease speedExtend your lifePiezoelectric/electrostriction/magnetostriction machinesMagnetic holding devicesCircular discElectric machine
The invention provides a hybrid suspension disc non-contact ultrasonic motor, the motor system consists of a motor stator base (1), a piezoelectric ceramic (7), a motor rotor base (2), a rotating shaft (5), a radial bearing stator (4), radial bearing rotor (6), axial bearing stator base (10), electromagnetic coil (11), displacement sensor (12), axial bearing rotor base (13), support (3), screw ( 8) and countersunk screw (9) constitute. The radial bearing is composed of a permanent magnetic ring to achieve radial passive stable suspension through permanent magnetic force. The axial bearing controls the electromagnetic force to achieve axial active stable suspension by adjusting the current of the electromagnetic coil. The motor rotor is driven by the acoustic radiation pressure and the acoustic viscous force. Acoustic levitation and high-speed rotation are realized. The motor has the advantages of high speed, no mechanical friction, no lubrication, simple structure, and easy adjustment of the gap between the stator and the rotor.
Owner:阿尔帕动力科技江苏有限公司
Purification system
PendingCN114599404AAchieve efficiencyImprove purification effectMechanical apparatusLighting and heating apparatusEngineeringMechanical engineering
A hydrogen peroxide mist supplied to a chamber to be purified is further refined and dispersed / diffused, and a perfect purification effect is achieved by supplying an appropriate amount of hydrogen peroxide mist to the chamber to be purified, and the efficiency of purification work is achieved by shortening the working time of ventilation and the like. A purification system is provided with a mist generation means, a mist discharge port, and a mist dispersion / diffusion means. The mist generating unit generates mist for purification by atomizing the purification liquid. The mist discharge port opens at the upper part of the inner side wall surface of the chamber to be purified and discharges purification mist into the chamber to be purified. The mist dispersing / diffusing means generates an acoustic flow by ultrasonic waves in the vertical direction from a disk surface of a vibrating disk disposed in the vicinity of the lower part of a mist discharge port in the inner side wall surface of the chamber to be purified or in the vicinity of the lower part of the side wall surface in the mist discharge direction, and intermittently operates or weakly operates a pressing force generated by acoustic radiation pressure on the purification mist from the rear or the side surface.
Owner:AIREX
Online expired gas detection device and detection method
PendingCN114577888ASimple structureLow costMaterial analysis by electric/magnetic meansEngineeringSound wave
The invention discloses an expired gas on-line detection device which is composed of a sample extraction part and a detection part, the sample extraction part comprises a sound wave suspension device which is provided with a sound wave emission plate and a sound wave reflection plate which are horizontally arranged, and a suspension center with balanced sound radiation pressure and liquid drop gravity is arranged between the sound wave emission plate and the sound wave reflection plate; the exhaled air injection pipe is provided with an input end for exhaling of a person to be detected and an output end opposite to the suspension center; the extraction liquid injection needle is used for injecting the extraction liquid into the sound wave suspension device drop by drop, so that the extraction liquid drops suspend in the suspension center; the electrospray injector is used for spraying electrospray to enable the extraction liquid drops to be electrified; and the extraction transmitter comprises electrode plates arranged on the two sides of the suspension center and is used for crushing the electrified extraction liquid drops and enabling the electrified extraction liquid drops to enter the detection part. The invention further discloses an expired gas online detection method using the detection device, integration of rapid, online and efficient extraction and enrichment and real-time detection of the target object in the expired gas can be achieved, and development of expired gas detection work is greatly facilitated.
Owner:ZHENGZHOU UNIV
A device for guiding microfluidic transport by exciting-absorbing traveling waves
InactiveCN105927519BSolve the cooling problemSolve the low heat dissipation efficiencyFlexible member pumpsPositive-displacement liquid enginesControl mannerResistor
The invention relates to a vibration-excitation-vibration-adsorption traveling wave guide microfluid delivery device and belongs to the field of micro-precision drive. The vibration-excitation-vibration-adsorption traveling wave guide microfluid delivery device comprises an ultrasonic wave signal generator, an ultrasonic traveling wave drive microcomponent, an inductor and a resistor. According to the vibration-excitation-vibration-adsorption traveling wave guide microfluid delivery device, high-frequency vibration is generated through the inverse piezoelectric effect of piezoelectric ceramics, an ultrasonic traveling wave sound field is generated in a micro-pipeline through a vibration excitation and vibration adsorption principle, acoustic radiation pressure in the sound field can drive microfluid in the micro-pipeline to be delivered in the traveling wave direction, point drive of traditional microfluid drive is changed into face drive, and the whole sound field is a drive source. The vibration-excitation-vibration-adsorption traveling wave guide microfluid delivery device has the beneficial effects that no movable component exits, the control manner is simple, control precision is high, and high miniaturization and high integration are achieved.
Owner:JILIN UNIV
Devices, systems, methods and computer readable media for acoustic flow cytometry
ActiveCN102762990BHigh Throughput AnalysisQuick analysisMaterial analysis by optical meansParticle flowTransducer
A flow cytometer includes a capillary having a sample channel; at least one vibration producing transducer coupled to the capillary, the at least one vibration producing transducer being configured to produce an acoustic signal inducing acoustic radiation pressure within the sample channel to acoustically concentrate particles flowing within a fluid sample stream in the sample channel; and an interrogation source having a violet laser and a blue laser, the violet and blue lasers being configured to interact with at least some of the acoustically concentrated particles to produce an output signal.
Owner:LIFE TECH CORP
Pass box
ActiveCN113646011AApparatus sterilizationLighting and heating apparatusEngineeringAcoustic radiation pressure
Provided is a pass box with which it is possible: to achieve a perfect decontamination effect by converging decontamination mist on the surface of an article that is to be brought into a grade A environment; and to make a decontamination operation more efficient by shortening the amount of time required for aeration. This pass box comprises: a first chamber for decontaminating the outer surface of an article with a decontamination agent; a second chamber for removing the decontamination agent remaining on the outer surface of the decontaminated article; a decontamination agent feed device; a decontamination agent control device; a moving device for moving the article; and an air supply and exhaust device for supplying and exhausting cleaned air. The decontamination agent feed device transforms a decontamination chemical into decontamination mist, and feeds said mist into the first chamber where the article is accommodated. The decontamination agent control device is equipped with a trembling board disposed in the vicinity of an internal wall surface of the first chamber, causes the trembling board to oscillate ultrasonically so as to generate ultrasonic acoustic streaming in a perpendicular direction from a surface of the board, and causes a pressing force of acoustic radiation pressure to act on the fed decontamination mist, whereby the mist is caused to converge and act on the outer surface of the article.
Owner:AIREX
Particle control method
A particle control method is provided which can prevent an extremely small quantity of particles descending on a stream of a laminar flow in a clean zone through which the laminar flow flows as in a RABS or isolator device from descending to a specific position or can guide it so as to descend to the specific position by controlling movement of the particles. A particle descent position is separated away from a board surface of the oscillation board by using an acoustic radiation pressure generated by prompting ultrasonic vibration of the oscillation board disposed with a board surface substantially in parallel with a flow direction of the laminar flow.
Owner:AIREX
Vibration-excitation-vibration-absorption traveling wave guide microfluid delivery device
InactiveCN105927519ASolve the cooling problemSolve the low heat dissipation efficiencyFlexible member pumpsPositive-displacement liquid enginesControl mannerVibration absorption
The invention relates to a vibration-excitation-vibration-adsorption traveling wave guide microfluid delivery device and belongs to the field of micro-precision drive. The vibration-excitation-vibration-adsorption traveling wave guide microfluid delivery device comprises an ultrasonic wave signal generator, an ultrasonic traveling wave drive microcomponent, an inductor and a resistor. According to the vibration-excitation-vibration-adsorption traveling wave guide microfluid delivery device, high-frequency vibration is generated through the inverse piezoelectric effect of piezoelectric ceramics, an ultrasonic traveling wave sound field is generated in a micro-pipeline through a vibration excitation and vibration adsorption principle, acoustic radiation pressure in the sound field can drive microfluid in the micro-pipeline to be delivered in the traveling wave direction, point drive of traditional microfluid drive is changed into face drive, and the whole sound field is a drive source. The vibration-excitation-vibration-adsorption traveling wave guide microfluid delivery device has the beneficial effects that no movable component exits, the control manner is simple, control precision is high, and high miniaturization and high integration are achieved.
Owner:JILIN UNIV
An ultrasonic transmission device
ActiveCN105151780BAvoid pollutionAvoid scratchesCharge manipulationNon-mechanical conveyorsAcoustic radiation pressureUltrasound
The invention discloses an ultrasonic conveying device. The ultrasonic conveying device comprises an ultrasonic generation device, a vibrating plate and an adsorption mechanism, wherein the vibrating plate comprises a first surface and a second surface which are arranged oppositely; the ultrasonic generation device is arranged to be close to the first surface; a conveyed object is arranged on the second surface; the ultrasonic generation device is used for emitting ultrasonic waves; the ultrasonic waves are continuously emitted between the vibrating plate and the conveyed object to generate acoustic radiation pressure for lifting the conveyed object, and the conveyed object and the second surface are made to be separated; the adsorption mechanism is arranged close to at least one side of the vibrating plate or arranged opposite to the second surface, and the adsorption mechanism is used for adsorbing and driving the conveyed object to move in the conveying direction. In this way, it is ensured that the conveyed object does not directly make contact with the conveying device, and the conveying device is prevented from being polluted or scratched.
Owner:WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
Hybrid suspension type disc non-contact ultrasonic motor
ActiveCN105406762AIncrease speedExtend your lifePiezoelectric/electrostriction/magnetostriction machinesMagnetic holding devicesPower flowElectric machine
The invention provides a hybrid suspension type disc non-contact ultrasonic motor. The motor system is composed of a motor stator base body (1), piezoelectric ceramics (7), a motor rotor base body (2), a rotating shaft (5), a radial bearing stator (4), a radial bearing rotor (6), an axial bearing stator base body (10), an electromagnetic coil (11), a displacement sensor (12), an axial bearing rotor base body (13), a supporting seat (3), screws (8) and countersunk screws (9); radial passive stable suspension of a radial bearing is realized through the permanent magnetic circular rings and by means of permanent magnetic forces; the current of the electromagnetic coil is adjusted, so that permanent magnetic forces can be controlled, and therefore, the axial active stable suspension of an axial bearing is realized; and acoustic suspension and high-speed rotation of protestation of a motor stator can be realized under the driving effects of acoustic radiation pressure and an acoustic viscous force. The motor has the advantages of high speed, no mechanical friction, no need for lubrication, simple structure, easiness in stator and rotor clearance adjustment, and the like.
Owner:阿尔帕动力科技江苏有限公司
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