53 results about "Vibration of plates" patented technology

A self-contained pill dispenser is disclosed. A housing is provided and a hopper for containing a plurality of pills is supported by the housing. A feed chute having a transport spiral therein is operatively connected to the hopper for receiving pills therefrom. The transport spiral has an outlet and controllable aperture. A vibrating plate is disposed proximate the outlet. A drive mechanism is connected to the vibrating plate for imparting vibration thereto. The drive mechanism can abruptly stop the vibration of the vibrating plate. A microcontroller is also operatively connected to the hopper, the transport spiral, and the drive mechanism. The system can self-calibrate the mechanism for counting and dispensing pills.

A vibrating plate apparatus including a vibrating plate on which a user rests, a vibration motor member connected to the vibrating plate, several air cushions provided under the vibrating plate for dampening vibration, and an air tank in communication with each of the air cushions. The tank establishes the air pressure in at least one of the air cushions at a predetermined value independently from the user's weight. The motor member includes two motors rotating in opposite directions, each of the two motors including a set of flyweights driven by the two motors and having a center of gravity offset relative to the axis, the two sets having the same mass, being symmetrical to each other and including at least one moveable flyweight that can assume at least one position to vary the vibrating plate's vibration amplitude.

A furniture includes an inflatable body and a plurality of vibrating units. Each of the vibrating units is mounted on the inflatable body, and includes a vibrating plate that is spaced apart from the inflatable body and that is formed with protrusions thereon, and a driving member for driving vibration of the vibrating plate.

The invention discloses a method for establishing an equivalent dynamic model of a laminated plate based on a vibration mode. The method includes the step S1 of performing laminated plate finite element model modal analysis; the step S2 of performing laminated plate test model modal analysis; the step S3 of performing data analysis on a laminated plate finite element model and a test model; the step S4 of building an objective function; the step S5 of solving a sensitivity matrix of a laminated plate equivalent dynamic model constitutive parameter for a simulation modal parameter; the step S6of identifying a laminated plate equivalent dynamic model parameter. According to the method, the constitutive parameter of the laminated plate equivalent dynamic model is subjected to equivalence byadoption of an actually-measured vibration mode parameter of the laminated plate, and forceful technical support is provided for equivalent results. As test data is derived from a test of a real physical structure, the equivalent parameter is persuasive and can accurately describe the dynamic characteristics of the laminated plate in a certain frequency domain range. The method is not limited to the laminated plate only and is also suitable for other equivalent dynamic modeling of plates such as hollow plates.

The invention discloses a device for measuring bending and torsional vibration of a hinged plate of a phase-sensitive detector (PSD) sensor and a method for the device. The device comprises a hinged plate body part and a detection part. The hinged plate consists of three flexible plates connected together through hinges; a substrate for fixing the hinged flexible plates is provided with a laser emitter, and a two-dimensional PSD is arranged on the edge at the tail of the hinged plate. When the hinged plates is vibrated, the two-dimensional PSD moves along the vibration of the hinged plate, the positions of light spots generated on the two-dimensional PSD by the laser emitter are also changed, the two-dimensional PSD transmits the detected change information to a computer, and the computer performs decoupling operating to obtain small-amplitude bending and torsional vibration measured parameters of the hinged plate for vibration analysis or control. The invention realizes decoupling of the bending and torsional vibration of the hinged plate structure in detection.

A micro acceleration transducer-based cooking state control method for an electromagnetic oven boiler is realized as follows: a micro acceleration transducer chip detects a vibration signal transmitted by a boiler body to a ceramic glass plate; during the heating processing, an electromagnetic oven monitors the vibration of the ceramic glass plate through the micro acceleration transducer in real time; in case that the current vibration acceleration exceeds a preset vibration acceleration threshold value, the judgment of boiler body boiling state at present can be made, otherwise, the judgment of boiler body un-boiling state at present can be made; when the judgment of boiler body boiling state at present is made, a first time meter is started to record the heating time; when the heating time reaches a preset heating time value, the main power source is switched off, the electromagnetic oven stops heating temporarily, and a second time meter is started to record the heating suspension time; when the heating suspension time achieves a preset suspension time value, the main power source of the electromagnetic oven is restarted to heat the boiler body; as a result, the control on the cooking states is realized. The method improves the accuracy and eliminates the time lag.

The present invention relates to a condenser microphone whose body can be miniaturized while keeping a property and a sound quality comparable to those of a conventional condenser microphone. The condenser microphone includes a cylindrical body, a plurality of vibration plates which are formed into the shapes of squares and placed in parallel to a body axis line within the body, acoustic holes formed on a body side wall in a direction vertical to the vibration plates and back pole plates which are placed on a side opposite to the acoustic holes with the vibration plate between and face on the respective vibration plates at an interval of a micro gap. A potential of the back pole plate is varied according to a vibration of the vibration plate.

A rectangular thin panel conveyance unit that prevents damage of a plurality of rectangular thin panels while conveying the plurality of rectangular thin panels that are stacked so as not to contact one another. A rectangular thin panel conveyance unit includes a plurality of sets of four corner modules, and vibration suppressing bodies for rectangular thin panels in a fixed shape. The corner module has a support surface to support each corner portion of the rectangular thin panel from a lower side. At each corner portion, stacking the corner modules in a columnar shape in the vertical direction stacks a plurality of rectangular thin panels in the vertical direction. At this time, the vibration suppressing body has the thickness that is equal to or less than the distance between the support surfaces of the corner modules adjacent to one another in the vertical direction. The vibration suppressing bodies are disposed on each of a top surface and an inferior surface of the rectangular thin panel such that the vibration suppressing body faces a planar portion of each rectangular thin panel to restrict amplitude of vibration of the rectangular thin panel in the vertical direction, which is caused by conveyance of the plurality of stacked rectangular thin panels, within a predetermined range. The vibration suppressing body has a contact portion for the planar portion of the rectangular thin panel.

The electromagnetically vibrating precise seeder consists of an electromagnetic vibrator, a vibrating plate, a support plate spring, an angle locating seat, a pressing rod, a vibrating frame, a link rod, a sliding block, uprights, springs, etc. It has also one seed box assembly comprising a seed storing box, a movable regulating board and a seed exhausting opening. Regulating the seed exhausting opening can regulate the total seed amount, and regulating the vibrating plate, the frequency of the electromagnetic vibrator, the position of the support plate spring and the vibration direction of the vibrating plate can regulate the seeding amount. The present invention has adjustable seeding speed and controlled seeding precision, and is suitable for use in drilling and hole seeding.

The invention discloses a diagnosis method for large axial vibration of a bearing pedestal due to foundation loosening and belongs to the field of a bearing pedestal vibration detection technology. The method comprises the following steps: measuring vibration values of the bearing pedestal respectively in a vertical direction, a horizontal direction and an axial direction; comparing the vibration value in each direction with a standard value, and determining whether the bearing pedestal is safe, and a main vibration direction and a dominant frequency; testing and comparing vibration values of foundation screws and a foundation slab where the bearing pedestal is disposed; and fastening the screws with quite large vibration values under the condition that shutdown is not carried out, and detecting the vibration values of the foundation screws again. According to the invention, fault reasons why the axial vibration of the bearing pedestal is large can be rapidly found in an onsite test process, whether faults are caused by the foundation loosening is determined, the operation of a whole diagnosis process is quite simple and convenient, normal production is not affected, and fault hidden trouble can also be eliminated so as to prevent damage to equipment.

An apparatus and a method to facilitate the visual representation of electromagnetic signals, both audible and inaudible, which preferably is comprised of a component for realistically reproducing sound, if any, and necessarily is comprised of one or more components for producing a visual display which is influenced by inputted electromagnetic signals. This is achieved utilizing a high voltage / low current electrostatic source (charged above 10 kV) to electrostatically charge and discharge one or more display cases containing lightweight micro-spheres or objects of any shape or size capable of being influenced by electrostatic energy. This is demonstrated when the charged light-weight objects jump up, down and in all other directions in a fully transparent display to the rhythm of the music or other audio if any is present or reflecting the amplitude, intensity and frequency fluctuations of more random signals using pulsed, controlled electrostatic discharges. These characteristics are also shown by light displays which sway and waver with the electrostatic discharges and which flash with various signal changes. These characteristics are further demonstrated by micro-bead substrate changes which occur with vibrations of a transparent vibration plate. Various lenses, mirrors and even the lights within the system can also be made to move with the signal using the method described by this invention to change, light strip position, light reflection angles, focal points and magnification. Furthermore reflections of lights and the moving objects in the transparent electrostatic display enclosures are projected in a three dimensional visualization above the top display window of the apparatus utilizing fresnel lenses and a reflective mirror system as they move and sway, their movements, undulations, and reflections are projected and magnified, along with the movements of the objects for the viewer / user's entertainment. Achieving these results involves a method of making electrically conductive sheets and apparatus layers which are almost completely transparent so as to not impede the passage of light through the apparatus, also utilization of a transparent vibration plate and micro-beads with desired properties.

The invention relates to a top-leaning electric reflection sheet device, which includes a base, a reflector stand, a linkage seat and an electric module, the electric module is provided to dolly move on the base to drive the linkage seat to move, and the bottom of the connecting portion of the reflector stand is synchronously driven to dolly move, and the elasticity provided for the linkage seat to move upwards could used to buffer vibration of the dashboard, so the reflection sheet could tightly lean on the windshield to improve stability of the reflection sheet and displayed images would not be shaken, to thereby enhance viewing quality.

An accleration sensor comprises a fixed case member and a cover assembly collectively defining a closed space in which the oscillation plate and the piezoelectric element received therein. The oscillation plate and the piezoelectric element are oscillatably supported by a supporting portion formed on the central bottom portion of the fixed case member. The oscillation plate and the piezoelectric element are integrally oscillatable in two different modes consisting of: a 1 / 1 oscillation mode where the oscillation plate is irregularly deformed to have the peripheral portion oscillated with a single vector in the oscillation direction of the oscillation plate when the oscillation plate is oscillated with respect to the fixed case member at a resonance frequency f0; and a 1 / 2 oscillation mode where the oscillation plate is irregularly deformed to have two different half parts of the peripheral portion oscillated with their respective different vectors opposite to each other in the oscillation direction of the oscillation plate when the oscillation plate is oscillated with respect to the fixed case member at a noise frequency f01, and the resonance frequency f0 and the noise frequency f01 are out of the range of effective oscillation frequencies. Thus constructed acceleration sensor is of high performance and appropriate for automatic production at a low cost.

A vibrating plate apparatus including a vibrating plate on which a user desiring muscular toning rests, a vibration motor member connected to the vibrating plate for vibrating the plate at a desired frequency, several air cushions provided under the vibrating plate for dampening vibration, and an air tank in communication with each of the air cushions. The tank establishes the air pressure in at least one of the air cushions at a predetermined value independently from the user's weight. The motor member includes two motors rotating in opposite directions, each of the two motors including a set of flyweights driven by the two motors and having a center of gravity offset relative to the axis, the two sets having the same mass, being symmetrical to each other and including at least one moveable flyweight that can assume at least one position for varying the vibrating plate's vibration amplitude.

The mechanical movement includes a checking device which is a passive indicator element. The passive element is fixed to a fixed support portion of the mechanical movement. The passive element may be a strip or a plate fixed to the fixed support portion of a regulating member and configured to vibrate according to one or more clearly defined vibration frequency components following the vibration of the mechanical movement. The vibration frequency components of the strip or plate define an acoustic signature specific to the timepiece to allow the authenticity of the timepiece to be determined by a measurement of the acoustic signature using an acoustic measuring system.

The invention relates to the technical field of traction vibration damping, and discloses a tractor vibration damper. The tractor vibration damper comprises a tractor floor and an engine supporting plate. The engine supporting plate is located below the tractor floor. The tractor vibration damper further comprises vibration damping blocks, an elastic piece and a fastening connecting piece. The vibration damping blocks are arranged on the upper side and the lower side of the engine supporting plate. The upper end of the vibration damping block on the upper side of the engine supporting plate abuts against the portion below the tractor floor. The vibration damping blocks, the engine supporting plate and the tractor floor are each provided with a corresponding center hole. The elastic piece is arranged in the center holes. The fastening connecting piece vertically penetrates through the elastic piece, the vibration damping blocks, the engine supporting plate and the tractor floor to be locked. The tractor vibration damper is simple in structure and can effectively relieve or eliminate vibration of the tractor floor.

The invention discloses a multi-flexible-plate structure vibration measurement and control device and method on a planar motion air floating working table. The device comprises a mechanical body part, a detection drive part and a control part. A floating environment is established through an air floating cushion jet film supporting experimental platform, a flywheel and a double-guide-rail sliding table are driven by a servo motor, the experimental platform is driven to move horizontally and rotate through the acting force and the moment, vibration of cantilever slabs is stimulated, bending and torsion vibration of the cantilever slabs is detected through a detection part, and a computer obtains a signal and conducts an operation to obtain a control signal to drive a piezoelectric ceramic driver to eliminate vibration. The device simulates the general structure of an aircraft, and the air floating working table is used for simulating the vibration condition of a solar panel in space for vibration analysis and control.

This vibration welding device is a device that vibration welds an airbag holding box and an installment panel having a tear line. The vibration welding device is provided with a support jig that carries and affixes the installment panel during vibration welding. The support jig is provided with a groove that permits thermal expansion during vibration welding of the installment panel at a position differing from the tear line.

A magnetic levitation vibration system comprising a top plate, a base plate, at least one first magnet, at least one second magnet, at least one electromagnetic actuator comprising an upper half and a lower half, a controller, a sensor, and a control circuit. A method for the treatment or prevention of musculoskeletal indications comprising providing a top plate, providing a base plate, generating a first magnetic field to levitate the top plate, generating a second magnetic field to drive the top plate into vibration, adjusting frequency of vibration of the top plate; and adjusting magnitude of vibration of the top plate.

The present invention relates to a structure technique for assembling flat board type vibration plate speaker of television, especially a structure for assembling flat board type vibration plate speaker of television to inhibit the division vibration of the flat board type vibration plate and improve the timbre of the speaker through a plurality of assistant cones. It includes the following structures: a brim to moderate the impact by the vibration of the flat board type vibration plate with one end disposed on the back of the flat board type vibration plate; a gasket located on the other end of the above brim adjacent the flat board type vibration plate; a frame disposed on the back of the brim; a first assistant cone and the second assistant cone mounted on the speaker host in turn to inhibit the division vibration of the flat board type vibration plate between the brim of the two ends and the frames of the flat board type vibration plate. The division vibration of the flat board type vibration plate is inhibited through a plurality of assistant cones to embody the merit of the design of the flat board type vibration plate to reach the effect to improve the timbre of the speaker.

The invention discloses a flexible plate vibration form visualization method based on vision. A flexible plate vibration device is included, the flexible plate vibration device comprises a flexible plate, the flexible plate is provided with mark points, a binocular vision measurement unit is arranged in front of the flexible plate, the mark points and the flexible plate are within the view field range, and the binocular vision measurement unit shoots images containing the mark points and the flexible plate and inputs the images into a computer; the computer processes the acquired image based on an OpenCV visual library, and then interpolation is carried out based on a cubic spline function and a grid division algorithm to obtain more reference points; and each frame of vibration state of the flexible board is drawn based on the OpenGL graphics library to realize vibration form visualization of the flexible board.

The invention discloses a wheel using three-dimensional quasi photonic crystals to reduce vibration and noise. The wheel comprises a hub, a rim and a wheel disk connected between the hub and the rim,wherein multiple three-dimensional quasi photonic crystals are mounted on the wheel disk; the three-dimensional quasi photonic crystals are spliced by at least two photonic crystal units. The wheel has the advantages that for the vibration above 1000Hz, the three-dimensional quasi photonic crystals at the wheel disk have the features of an elastic wave forbidding band and can effectively inhibit the vibration of the wheel disk, and accordingly radiation noise can be controlled; accordingly, the wheel has a good reduction effect on the medium- and high-frequency vibration and noise above 1000Hz.

The invention relates to a low-weight force transfer support plate structure capable of being applied to a ground gas turbine and aero-engine. A force transfer support plate is obtained by sheet metal forming of a board with the thickness being 0.3-2mm. Reinforced boss rib structures of the certain width and depth are designed at different height positions around the support plate, and the boss rib structures are formed through impact molding. The support plate is combined with the inner circle and outer circle of a casing in a welding mode ultimately and further bears complex stresses of a welding assembly in the operating state. Through the support plate subjected to sheet metal forming, the weight of the support plate casing in the ground gas turbine and aero-engine can be lowered obviously. Furthermore, when analysis is made from the aspects of engine force transferring and stressing, through the structure design method of the reinforced boss rib structures dispersed at the different height positions on the surface of the support plate, the support plate thermal expansion requirement caused by different deformation rates of the inner circle and outer circle of the casing in a heat-state environment can be met, and meanwhile the support plate structure can be adapted to thin-walled support plate vibration danger possibly caused by gas flow pulsation of gas flowing in a main flow channel at a high speed.

A furniture includes an inflatable body and a plurality of vibrating units. Each of the vibrating units is mounted on the inflatable body, and includes a vibrating plate that is spaced apart from the inflatable body and that is formed with protrusions thereon, and a driving member for driving vibration of the vibrating plate.

The invention discloses a mechanical vibration law monitoring device. The device comprises a bottom plate, two side plates are fixedly connected to the upper end of the bottom plate in a front-back symmetrical mode. A vibrating mechanism is arranged between the side plates; the vibrating mechanism comprises a vibrating plate which is arranged between the side plates in a sliding manner; a throughgroove is formed in the vibrating plate in a front-back penetrating manner; two rollers are arranged in the through groove in a rolling manner; two supporting plates are connected between the two supporting plates; optical shafts are connected with the internal portions of the rollers in the sliding mode. By directly monitoring the vibration amplitude and the vibration period of the vibration plate, the vibration rule of the vibration plate during actual vibration is obtained, the excitation and damping of the vibration plate before vibration can be changed, and then the relation between the vibration rule of the vibration plate and the excitation and damping is obtained.

The electronic device including a piezoelectric element, a vibration plate having the piezoelectric element fixed thereto for generating air conduction sound by vibrating the piezoelectric element and sound to be transmitted by vibrating a part of a human body, a housing having the vibration plate fixed thereto, and an operation key provided to the housing, makes vibration of the vibration plate not likely to be transmitted to the operation key.

A piezoelectric vibrating plate covered by a conductive layer at a vibrating distal end of the vibrating plate and at an obverse face. Slits cut in the conductive layer separate piezoelectric vibrators in a first area of the vibrating plate from non-vibrating dummy vibrators in a second area of the vibrating plate.