399results about How to "Strong vibration" patented technology

There is provided a horizontal linear vibrator including a bracket providing an internal space; a vibration unit mounted in the internal space and including a mass body moving horizontally and linearly; and a magnetic field unit including a magnet fixed to the mass body and a coil installed within a magnetic field of the magnet and generating electromagnetic force to allow the vibration unit to move horizontally and linearly, wherein the coil includes a coil line disposed between the bracket and a printed circuit board and extending outside of the internal space of the bracket such that the coil line is connected with the printed circuit board for applying power from an external source to the coil outside of the internal space of the bracket.

An object of this invention is to provide such a welded structure of and welding method for two metallic parts fitted together at a tubular section in a high-pressure fuel supply pump, that enables rapid joining of both metallic parts by staking (press-fitting included), screw fastening, and / or laser welding, offers high welding strength and sufficient fluid sealability, and keeps the metallic materials free from thermal changes in composition. Solution: While an electric current is supplied to any one of the welding connection surfaces formed between a pump housing and cylinder in a high-pressure fuel supply pump, between the pump housing and an installation flange, between the pump housing and an intake or discharge joint, between the pump housing and a pulsation-absorbing damper cover, between the pump housing and a relief valve mechanism, and between the pump housing and an electromagnetically driven intake valve mechanism, the particular two sections are pressed against each other to generate, along the connection surface, a plastic flow not causing melting or fusion due to heat, and form a diffusion-weld region at the connection surface by using the plastic flow and the application of the pressure.

The invention provides a flight control method for a small unmanned aerial vehicle. A homotaxial MEMS gyroscope, a barometer and a single-point GPS receiver are adopted as sensors, and the unmanned flight of the small unmanned aerial vehicle is realized through reasonable collocation and control design. In the side channel control, the homotaxial MEMS gyroscope forms a certain angle with z axis of a vehicle body coordinate system and a certain angle with x axis of the vehicle body coordinate system in the aerial vehicle longitudinal plane, so that the stability of the side channel of the small unmanned aerial vehicle is ensured, and then the small unmanned aerial vehicle can set a route and fly by utilizing GPS position information. In the longitudinal channel control, a derivative network is constructed to the barometer for damping the long period heaving vibration of the small unmanned aerial vehicle, and then the small unmanned aerial vehicle can set a height and fly by utilizing the GPS height. The method is particularly suitable for autonomous flight control of the small unmanned aerial vehicle which does not form a miniature inertial navigation system. The invention realizes the progress that the small unmanned aerial vehicle can fly autonomously according to a planned air landing site with the least sensors.

There are provided a vibrator and an electronic device including the same, the vibrator including a housing having an internal space; a shaft included in the internal space; a vibrating part suspended in the internal space by elastic members at both ends thereof, including a magnetic field part, and having a bearing member slidably and movably installed on the shaft; and a coil generating vibrations of the vibrating part through electromagnetic interaction with the magnetic field part and provided on an outer peripheral surface of the shaft while facing the magnetic field part.

An organometallic iridium complex has high emission efficiency and a long lifetime. The iridium complex includes the structure represented by Formula (G1). In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms. R1 to R6 independently represent any one of hydrogen and a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, and one of R2 and R6 represents the alkyl group. X represents a carbon atom or a nitrogen atom, and when X represents a carbon atom, hydrogen or an alkyl group having 1 to 6 carbon atoms is bonded to the carbon atom. A dihedral angle between a ring bonded to R1 and a phenyl group bonded to R2 to R6 is 30° or more and 90° or less. An interior angle of the pyridine / pyrimidine ring facing R1 is within a range of 118° to 122°.

The invention discloses a large cryogenic liquid rocket engine test bed supply system. The system comprises a fuel pressurization system, an oxidizing agent pressurization system, a fuel transport system and an oxidizing agent transport system. According to the system, propellant is pressurized through a gas supercharging method, and the stability and reliability of liquid flow in the engine testing process are guaranteed; the domestic normally-used pump pressurization method is not adopted and has the defects that the output flow of liquid is in an impulse mode, vibration is strong and difficulty is caused in the testing process, so the gas supercharging method has high adaptability to the system; the function that liquid propellant is converted into gas propellant is expanded, the requirements of other testing systems for the gas propellant can be met in future, and the multifunctionality of the testing system is greatly expanded.

The invention discloses a wind-energy piezoelectric conversion generator by using vortex-induced vibration. The generator comprises a shell, an air duct, bluff bodies, a support frame, piezoelectric plates, a box body, an electric bridge, a direct-current voltage regulator and a storage battery, wherein the electric bridge, the direct-current voltage regulator and the storage battery are arranged in the box body; the air duct is connected with an air inlet of the shell; a plurality of bluff bodies are arranged near the air inlet in the shell; the support frame is installed in the shell, and at least one piezoelectric plate is arranged on the support frame; the free ends of the piezoelectric plates correspond to the internal concave arcs of the bluff bodies; the metal electrodes of the piezoelectric plates are connected with the electric bridge via leads; the electric bridge is used for rectifying alternating current into direct current and transmitting the direct current to the direct-current voltage regulator; and the storage battery is used for storing the direct current output by the direct-current voltage regulator. The generator produces karman vortex street by bypassing reproducible and clean wind from the bluff bodies and then generates power through vibration by driving the piezoelectric plate with large energy density and high generating efficiency, thereby increasing the energy utilization rate, saving energy resources, implementing unmanned automatic control continuous self-power supply and protecting the atmospheric environment.

A device and method for balancing the torque created by strings on musical instruments includes a bracket attached to the bottom of the bridge, an adjustable brace attached to the neck and residing within the body of the instrument and a tension string connecting the bracket and brace such than it offsets torques created by the strings that create the music. The device counteracts the tension created by guitar strings and provides enhanced vibration of the instrument soundboard.

The invention discloses a medical ultrasonic surgical knife. The medical ultrasonic surgical knife comprises a knife bar, wherein the knife bar is provided with a connecting end, a knife point and a periodic repeating structure positioned between the knife point and the connecting end; the periodic repeating structure consists of rough structures and fine structures which are arranged alternatively; all the rough structures are the same in masses; all the fine structures are the same in masses; the distance between the gravity centers of any two adjacent rough structures differs from the distance between the gravity centers of any other two adjacent rough structures by 0.3 millimeter. When sound wave pass through the periodic repeating structures, vibration is transmitted forwards to the periodic repeating structures from a threaded segment and a connecting segment, the frequency is selected by the structures, responses are made to sound waves of required frequencies, sound waves are transmitted to a knife head in a resonant form, and sound waves of unrequired frequencies are cut off and are prevented from being transmitted to the knife head. Thus, the ultrasonic surgical knife can work at a stable frequency, and difficulty in surgical operation and non-safety are not increased due to frequency drifting.

A hand pump capable of blowing air out of the pump or sucking air into the pump is used to clean dust and debris from electrical equipment. The dust may be blown away from the equipment by the force of air exiting from the pump or may be vacuumed into a dust-collecting compartment on the pump.

The invention discloses a method for extracting betulin from birch barks, comprising the following steps: firstly, crushed birch barks are added into an ethanol water solution, undergo reflux extraction under auxiliary processing of ultrasonic waves, and then are filtrated for removal of residue, and an extract is obtained; secondly, solid powder is separated out after decompression and concentration of the extract, and then dried to the constant weight so as to obtain betulin coarse products; and thirdly, the betulin coarse products are added into an organic solvent, undergo ultrasonic treatment and then stand, crystals are separated out, and the betulin is obtained after the separated crystals are dried to the constant weight. The method has a simple operation flow, short extraction time, low production cost and high safety, and provides a better method and a better platform for further development and utilization of natural products.

A vibratory apparatus, including a housing having an internal chamber, wherein the internal chamber includes a lever having a first end and a free second end, and a piezoelectric element adapted to deform in response to an applied voltage, wherein deformation of the piezoelectric element displaces the free second end of the lever, and wherein displacement of the free second end of the lever within the internal chamber imparts a vibration to the housing.

To provide a communication apparatus and a SAW device wherein the steepness in the vicinity of the outside of the lower frequencies of a passband can be improved. On a piezoelectric board 100, a SAW element 11 is formed which has first to fifth IDT electrodes 1-5 and reflector electrodes 6,7 with first to fourth electrode-finger narrow-pitch portions N1-N4 being formed in the respective ones of adjoining portions of the respective first to fifth IDT electrodes 1-5. An unbalanced signal terminal 8 and balanced signal terminals 9,10 are connected to the SAW element 11. The electrode finger pitches of the first to fourth electrode-finger narrow-pitch portions N1-N4 are formed symmetrically with respect to the third central IDT electrode 3 in such a manner that the electrode finger pitch of the first electrode-finger narrow-pitch portion N1 is narrower than that of the second electrode-finger narrow-pitch portion N2, while the electrode finger pitch of the fourth electrode-finger narrow-pitch portion N4 is narrower than that of the third electrode-finger narrow-pitch portion N3.

A vibrating motor including a stepping motor in which control is simple, large vibration is generated, and drive torque can be efficiently generated, and a portable terminal apparatus using the same are provided. The vibrating motor includes a single-phase annular stator coil, a stator yoke disposed to surround the periphery of the single-phase annular stator coil and having pole teeth, an interface board fixing the stator yoke and having a wiring connected to the annular stator coil, plural arc-shaped magnets disposed to be opposite to the pole teeth and to be capable of rotating around a rotating shaft, and an eccentric weight capable of rotating around the rotating shaft.

[Object] To provide a vibration actuator capable of obtaining sufficiently sensible vibration with a flat, thin shape maintained.[Solving Means] Two magnets of a moving part are fixed in a direction where magnetic forces of the magnets are repulsed each other, and the moving part is disposed inside a coil of a fixed part in a housing, so that the moving part collides with the housing when an alternating current is applied to the coil. Therefore, vibration is transferred to the case through the collision. Accordingly, it is possible to implement a miniaturized vibration actuator capable of generating a sufficiently sensible vibration.

The invention discloses a mechanical resonance deicing device, which comprises a main framework, a supporting frame and a hydraulic station. Two sides of the supporting frame are connected with a plurality of lift oil cylinders arranged on the main framework, and a plurality of eccentric wheel resonance mechanisms driven by a hydraulic motor or an electric motor are arranged at the upper portion of the supporting frame at intervals. The lower portion of each eccentric wheel resonance mechanism is connected with one resonance rod capable of moving in a vertical reciprocating mode, and the lower portion of each resonance rod is connected with a shock excitation hammer. An ice layer inherent frequency collecting sensor is arranged beside the excitation hammer, the sensor transmits collected signals to a micro-computerized controller through a signal filtering amplifier, the micro-computerized controller controls rotation speed of the hydraulic motor through a flow valve arranged on the hydraulic station or controls rotation speed of the electric motor through a speed controller according to inherent frequency of the ice layers, and accordingly resonance frequency of each resonance rod is enabled to be the same as the inherent frequency of the ice layers. The mechanical resonance deicing device is thorough in deicing, fast in speed, and capable of clearing harm-to-remove hard cat ice on road faces and simultaneously protecting the road faces well.

The invention discloses a mini-piezoelectric wind energy collector with a flexible support. The mini-piezoelectric wind energy collector comprises a micro-bracket, a piezoelectric composite beam, a flexible support and a base, wherein the piezoelectric composite beam is connected with the base through the flexible support and the micro-bracket; electrodes are respectively arranged on an upper surface and a lower surface of a piezoelectric layer of the piezoelectric composite beam; a dynamic wind load causes the mini-piezoelectric wind energy collector to vibrate; an electric potential difference is generated between the upper surface and the lower surface of the piezoelectric layer; and power supplied to the load or an energy storage device can be realized by using the electric potential difference. The flexible support introduced by the invention is used for reducing the natural frequency of the mini-piezoelectric wind energy collector and ensures that the mini-piezoelectric wind energy collector generates strong vibration at a slower wind speed, therefore, a critical wind speed of the collector in normal use can be effectively reduced.

There are provided a vibrator and an electronic device including the same, the vibrator including a housing having an internal space; a shaft included in the internal space; a vibrating part suspended in the internal space by elastic members at both ends thereof, including a magnetic field part, and having a bearing member slidably and movably installed on the shaft; and a coil generating vibrations of the vibrating part through electromagnetic interaction with the magnetic field part and provided on an outer peripheral surface of the shaft while facing the magnetic field part.

The invention discloses a multiturn rotary encoder. The central part of the end surface of a rotary shaft (1) of the multiturn rotary encoder is provided with a first magnet (2), and the outer side of the first magnetic (2) is also provided with a second magnet (3); the multiturn rotary encoder also comprises a first sensing element (4), a second sensing element (5) and a controller (0), wherein the positions of the first sensing element (4) and the second sensing element (5) are fixed; the first sensing element (4) is arranged in the magnetic field range of the first magnet (2); within the time for the rotation of the rotary shaft (1) for a cycle, the second sensing element (5) is alternatively positioned in the magnetic field range of the second magnet (3) or is positioned out of the magnetic range of the second magnet (3); the controller is connected with the first sensing element (4) and the second sensing element (5), and is used for analyzing and processing the output signals of the first sensing element (4) and the second sensing element (5) and acquiring the detection result. The multiturn rotary encoder can measure the multiturn rotation angle of the rotary shaft, and has the characteristic of simple structure.

The invention relates to a chlorogenic acid extractive technique, in particular to a method for extracting chlorogenic acid from Chinese wolfberry. The method for extracting the chlorogenic acid from the Chinese wolfberry comprises the following steps of: 1) preprocessing the Chinese wolfberry; 2) extracting wolfberry polysaccharide; and 3) extracting the chlorogenic acid from the Chinese wolfberry. The method has the advantages that: the invention relates to the method for extracting the chlorogenic acid from the Chinese wolfberry taking leftovers of the enterprise production, namely Chinesewolfberry residues as a raw material; and the method has low extraction cost and short time, extends a Chinese wolfberry industrial chain, increases the added value of the Chinese wolfberry product, and realizes the optimized configuration of the raw material. According to the method, ultrasonic extraction is adopted so as to generate strong vibration, high acceleration and great cavitation and stirring action; when the method is used for auxiliary solvent extraction, the chlorogenic acid is accelerated to enter the solvent so as to shorten the extraction time, save the solvent and prevent the decomposition of the chlorogenic acid because of high temperature. The method for extracting the chlorogenic acid from the Chinese wolfberry provides the excellent production raw material for the related enterprises which develop and produce the medicament and the health food having the effects of preventing and curing tumor, reducing blood sugar, protecting the liver and gallbladder. The chlorogenic acid has the effects of increasing fragrance and protecting color, and can be used for food fresh keeping and various health foods and drinks.

The invention discloses an elevator security and protection control system based on load states. The system comprises an elevator car and an abnormality monitoring system, wherein the elevator car isprovided with a guide rail, a first camera and a second camera; the first camera is used for daily monitoring; the second camera slides along the guide rail to monitor abnormalities of the elevator car; the abnormality monitoring system comprises a vibration inductor, an infrared emitter, an infrared receiver and a remote monitor; when the vibration exceeds a preset maximum threshold, the vibration inductor sends a starting signal to the second camera, and frames are displayed on the remote monitor; when an elevator door is opened and the signal is not interrupted, the infrared receiver controls startup of the second camera; a face recognition module of a security and protection system obtains face images from frames shot by the second camera to send to an expression analysis module; and the expression analysis module analyzes abnormal expressions and sends alarm signals to an alarm module. The system can effectively prevent such events as robbing, seizing and violence attacking in elevators, and guarantees personal safety of users during taking of the elevators.

The invention relates to a high-efficiency and energy-saving temperature-control on-board battery pack, which comprises a peripheral frame, a copper pipe frame and a plurality of battery modules, wherein the copper pipe frame comprises a copper pipe and an aluminum plate; the copper pipe and the aluminum plate are formed in a bending manner; the copper pipe and the aluminum plate are fixedly arranged; thermal conductance contact is formed between the surface of the copper pipe and the surface of the aluminum plate; each battery module comprises an upper frame of the battery, a lower frame of the battery and a plurality of single battery cores; and the plurality of single battery cores are arranged into strip-type holes corresponding to the upper frames of the battery and the lower frames of the battery. According to the high-efficiency and energy-saving temperature-control on-board battery pack, the battery modules can be effectively cooled or heated by introducing cooling liquid or heating liquid into the copper pipe, so that the battery modules can be stably kept at a relatively good work temperature; the work efficiency is relatively high; the overall structure is firm and reliable; the high-efficiency and energy-saving temperature-control on-board battery pack can endure relatively high impact and vibration; and the installed battery modules are convenient to carry, dismantle and install as a whole.

Apparatus and method for controlling vibrations of a firearm barrel to increase firing accuracy and shot uniformity. A post is attached to the firearm barrel, and a locking bolt is screwed into the post. In the case of a rifle or similar weapon, the bolt preferably extends through an escutcheon which serves to attach the stock to the barrel.

The invention discloses a method for ultrasound-assisted synthesis of gallic acid, terpene alcohol ester, comprising the following steps that compounds of a 3,4,5-triacetyl gallic acid and terpene alcohols are subjected to dehydration and esterification in acetonitrile through DCC(N,N'-dicyclohexylcarbodiimide) under conditions of ultrasound and room temperature to generate the 3,4,5-triacetyl gallic acid, terpene alcohol ester; and the 3,4,5-triacetyl gallic acid, terpene alcohol ester is subjected to deacetylation of hydrazine hydrate under the condition of room temperature to generate the gallic acid, terpene alcohol ester. The synthesis method has the advantages of low reaction temperature, short reaction time and easy separation of the product.

A motor driving apparatus (101) for driving a linear vibration motor (100) is privided with an order output determining unit (3) for determining a motor output required of the linear vibration motor (100), and a driving frequency determining unit (2) for determining a driving frequency of the linear vibration motor (100) on the basis of the determined motor output, and an amplitude-fixed AC voltage (Vd) having a frequency equal to the determined driving frequency is applied to the linear vibration motor (100), whereby the output of the linear vibration motor (100) can be controlled without changing the amplitude value of the driving voltage applied to the linear vibration motor (100).

The invention provides a touch display panel and a touch feedback method thereof. The touch feedback method comprises inducing a touch operation on a touch display panel and obtaining position information of one or a plurality of touch points which are corresponding to the touch operation; selecting at least two vibration sources in a plurality of vibration sources and obtaining starting moments and duration time of the at least two vibration sources according to the position information of the touch points and the position information and the number of the vibration sources; starting the at least two selected vibration sources and enabling vibration waves sent from the at least two selected vibration sources to be superposed in the touch points, wherein the superposed amplitude is larger than the amplitude before superposition. According to the touch feedback method, the touch position of the touch display panel can be accurately fed back, the man-machine interaction effect can be improved, and the user usage experience is improved.

An operating method for a pump includes providing a return line for returning the fluid from a high-pressure side to a low-pressure side, controlling a control valve in the return line with a surge control unit for avoiding an unstable operating state, the control valve controlling the throughflow through the return line, storing a limit curve for a control parameter in the surge control unit, comparing an actual value of the control parameter with the limit curve during the operation of the pump; and when the actual value of the control parameter reaches the limit curve, controlling the control valve in the return line such that the actual value of the control parameter is moved away from the limit curve, an operating parameter of the pump being used as the control parameter.

The invention provides a tidal current energy and vortex-induced vibration energy comprehensive power generation device. The tidal current energy and vortex-induced vibration energy comprehensive power generation device comprises a tidal current energy water turbine and a vortex-induced vibration energy capturing device. A power generator, a power distribution box and a rectifying and voltage-stabilizing device which are sequentially connected with an impeller through wires are arranged in a power generator cabin of the tidal current energy water turbine. The vortex-induced vibration energy capturing device comprises a shell, a vibrator sliding along a guide rail, and a piezoelectric plate, wherein the shell is mounted on the rear side of a single pile foundation, the two end edges of the vibrator are arranged on the top surface and the bottom surface of the shell, and the two ends of the piezoelectric plate are connected with the vibrator and the rear end face of the shell correspondingly; and a conductive copper sheet is arranged at the end, connected with the rear end face of the shell, of the piezoelectric plate and sequentially connected with the rectifying and voltage-stabilizing device and the power distribution box located in the power generator cabin through wires. Water flow enters the shell after encountering the single pile foundation of the water turbine, vortexes falling alternately are generated on the two sides of the pile foundation, and vortex resonance is formed when the vortexes pass through the vibrator; and under the wake flow galloping effect, the vibration amplitude of the vibrator is greater than the vibration amplitude caused by resonance of ordinary vortexes, the vibrator drives the piezoelectric plate to swing left and right, and thus mechanical energy is converted into electric energy.

The invention belongs to the technical field of coating compositions, in particular to an ultra-thin silicon steel surface insulating coating and a preparation method thereof. The insulating coating provided by the invention is prepared from the following components: 65 to 85 parts of magnesium dihydrogen phosphate, 0.1 to 1.5 parts of insulating inorganic nanoparticles, 2 to 15 parts of silica sol, 2 to 4 parts of boric acid and 1 to 32.9 parts of deionized water. The coating formed by synergistic effects of all the components has excellent adhesion property to the surface of a bare steel sheet of ultra-thin silicon steel, and meanwhile, the insulation performance is ensured. The insulating coating provided by the invention is also prepared from 0.01 to 5 parts by weight of organic resin;by the addition of the organic resin, the adhesion of the ultra-thin silicon steel surface coating can be improved and subsequent high temperature sintering can be resisted, so that the ultra-thin silicon steel with the coating can be suitable for preparing a roll core of a saturation reactor, and further complex operating conditions such as strong vibration and high temperature rise of high pressure anode saturation reactors are met.