560 results about "Linear vibration" patented technology

The invention relates to a low-frequency vibration isolator with a wide quasi-zero stiffness interval. The low-frequency vibration isolator comprises a bearing platform, a base, a first negative stiffness assembly, a second negative stiffness assembly and a linear vibration isolation assembly. The bearing platform and the base are arranged in parallel and are both provided with bolt holes and limiting holes; a linear vibration isolation assembly is installed between the bearing platform and the base. The first negative stiffness assemblies are symmetrically distributed with the center point connecting line of the bearing platform and the base as the symmetry axis. The top of the first negative stiffness assembly is connected with the bearing platform, and the bottom of the first negative stiffness assembly is connected with the base. The two ends of the second negative stiffness assembly are connected with the two first negative stiffness assemblies correspondingly. The low-frequency vibration isolator has the characteristics of high static rigidity and low dynamic rigidity, the contradiction between the bearing capacity and the vibration isolation performance of a linear vibration isolation system is effectively solved, and the effective low-frequency vibration isolation effect on a vibration-isolated object is achieved while the bearing capacity of the vibration isolator is guaranteed.

The invention discloses a high-precision linear vibration feedback motor system, and relates to the technical field of precise electromagnetic driving, and the system comprises a core driving module which is a moving magnet type linear motor of a Halbach array magnetic circuit structure, and is integrated with a multi-physics field sensing unit; the dynamic parameter tracking module is used for acquiring a reed rigidity coefficient, a damping coefficient and a magnetic constant in real time when the motor runs, and establishing a dynamic displacement model based on a recursive least square method; a double-closed-loop control framework is adopted, an inner loop adopts field-oriented control, and an outer loop is based on model prediction control; the aging prediction unit activates a temperature rise compensation algorithm when the accumulated number of vibration times is greater than a set threshold value; the self-adaptive calibration engine is used for injecting a sweep frequency excitation signal when the system is started, and automatically compensating individual difference parameters according to the harmonic peak offset; and the digital twin mapping unit is used for establishing a real-time mapping relationship between the physical parameters of the motor and the virtual model, and dynamically correcting the model parameters by comparing the actual displacement with the model displacement.

The utility model relates to the technical field of vibration motors, in particular to a horizontal linear vibration motor, which comprises a shell with an accommodating space, a vibrator assembly, an elastic piece, a stator assembly and a cover plate, and is characterized in that the vibrator assembly comprises a mass block, magnetic steel and a damping piece, and is suspended in the shell through the elastic piece; the mass block comprises an integrally-formed cuboid body, the surface of the side, facing the cover plate, of the body is concavely provided with a receding coil and a groove penetrating through the body in the width direction, the center of the groove is provided with a square blind groove for containing the magnetic steel, and the blind groove forms the four walls of the mass block. The long side wall of the mass block is vertically and concavely arranged from the free end face of the mass block and penetrates through the long side wall to be used for installing a through groove of the damping piece, a first boss is horizontally and convexly arranged on the edge of the bottom of the long side wall, facing one side of the shell, of the body, and the groove forms a second boss on the free end face of the short side wall of the mass block. The performance of the horizontal linear vibration motor is improved, and the vibration effect of the motor is enhanced.

The invention discloses an efficient multiphase flow fractional separation, concentration and purification treatment system for argillaceous sandstone uranium ore. Comprising a hydraulic polishing and breaking pretreatment device, a high-frequency linear vibration classification device, a first-stage multiphase flow cyclone classification device, an energy-gathered ultrasonic scrubbing device, a second-stage multiphase flow cyclone classification device, a high-frequency linear vibration dehydration device, an efficient uniform mixing activation system and a tempering squeezing dehydration system. According to the invention, mud and sand deep stripping and material fine grading separation of the crushed argillaceous sandstone uranium ore are realized, meanwhile, the fine-particle argillaceous material is subjected to efficient uniform mixing activation and deep efficient dehydration, and four core materials, namely a coarse sand material, a fine sand material, tailing dry slag and a high-concentration uranium ore leaching solution, are finally formed through continuous work; finally, efficient multi-phase flow fractional separation, concentration and purification treatment of the argillaceous sandstone uranium ore is achieved, residues of uranium elements in tailings are reduced, and the deep extraction rate of uranium ore resources is increased.

The invention discloses an intelligent vibration isolation control method and system based on vibration monitoring, and the method comprises the steps: collecting vibration data, carrying out the preprocessing, carrying out the fuzzy conversion according to the preprocessed data, and calculating a preliminary control quantity; constructing an optimization model and defining a target function, using a locust optimization algorithm to iteratively optimize the population position until the target function value converges, and using the initial control quantity as the final optimization model input to obtain the final control quantity; driving force signals are calculated based on the final control quantity, a difference equation is further constructed based on accumulation of the driving force signals, then a predicted value is output, conversion is carried out according to the obtained predicted value, and instantaneous data are obtained. According to the method, efficient adaptive control over a complex nonlinear vibration system is achieved, the optimization process is rapidly converged, the target function optimization result is directly used for dynamic adjustment of the control quantity, the time for calculation of the control quantity is remarkably shortened, the future vibration trend is predicted through a difference equation, and the calculation efficiency is improved. And the dynamic response capability is further improved.

The invention discloses a method and a device for analyzing nonlinear vibration characteristics of a three-dimensional snakelike structure, and the method comprises the steps: modeling a three-dimensional piezoelectric snakelike extensible structure into a beam, and obtaining a three-dimensional snakelike beam model; wherein the three-dimensional piezoelectric snakelike extensible structure and the three-dimensional snakelike beam model are of a bow-shaped structure formed by sequentially overturning a plurality of L-shaped units in the direction of one side of the L-shaped units and sequentially connecting the L-shaped units end to end in the direction of the other side of the L-shaped units; kinetic energy and potential energy of the three-dimensional snake-shaped beam model are determined; determining a control equation of the three-dimensional S-shaped beam model according to the kinetic energy and the potential energy; and determining a dynamic response equation based on the control equation so as to determine the vibration characteristics of the three-dimensional S-shaped beam model. The problem that in the prior art, research on the vibration characteristics of the three-dimensional piezoelectric snakelike extensible structure is lacked is solved, the vibration characteristics of the three-dimensional piezoelectric snakelike extensible structure can be analyzed, and theoretical guidance is provided for application of the three-dimensional piezoelectric snakelike extensible structure.

The invention discloses a motor control method of oral care equipment and a related device thereof. The oral care device comprises a motor, and the motor comprises a rotor. Acquiring a driving signal; controlling the rotor to perform reciprocating vibration relative to a reference axis based on the driving signal, and controlling the position of the reference axis to change so as to enlarge the coverage range of the vibration; the vibration comprises linear vibration or rotary vibration; wherein the driving signal is a preset signal. In this way, the vibration coverage range of the rotor is remarkably enlarged, and the oral cavity cleaning effect is improved.

The invention discloses a six-degree-of-freedom micro-vibration table in-situ calibration device and method, and the device comprises a six-degree-of-freedom micro-vibration table top, a mounting platform, a linear vibration calibration unit, an angular vibration calibration unit, a coordinate positioning tool, a coordinate positioning tool fine adjustment mechanism, and a data collection and analysis system upper computer. The linear vibration calibration unit comprises an acceleration measurement unit and a vibration displacement measurement unit, the acceleration measurement unit is used for in-situ calibration of linear vibration parameters of the test system, and the vibration displacement measurement unit is used for in-situ calibration of vibration displacement parameters of the test system; and the angular vibration calibration unit is used for carrying out in-situ calibration on angular vibration parameters of the test system. According to the invention, on-site in-situ calibration of three-axis vibration and three-axis angular vibration of the six-degree-of-freedom micro-vibration table is realized, calibration in a low and medium frequency, micro-amplitude and multi-axis angular compound vibration state is realized through the acceleration sensor and the angular vibration sensor, and the six-degree-of-freedom micro-vibration table has the advantages of low cost, fast response and high reliability.

The utility model relates to the technical field of vibration motors, in particular to a horizontal linear vibration motor, which comprises a shell with an accommodating space, a vibrator assembly, an elastic piece, a stator assembly and a cover plate, and is characterized in that the vibrator assembly comprises a cuboid mass block, magnetic steel and a damping piece which are integrally formed, and is suspended in the shell through the elastic piece; the stator assembly comprises an annular coil and a flexible circuit board, the stator assembly is fixed to the cover plate, the shell is matched and buckled with the cover plate, bosses are horizontally and convexly arranged on the bottom edges of the long edges of the two sides, facing one side of the shell, of the two sides of the mass block, and metal anti-collision pieces are arranged at the positions, corresponding to the bosses, of the inner surface of the shell in a matched mode. According to the utility model, the anti-collision sheet is arranged at the position, corresponding to the boss of the mass block, on the inner surface of the shell, so that the risk that the shell is deformed due to impact of the boss of the mass block in the use process of the vibration motor, especially in mechanical tests such as a drop test of the vibration motor, is reduced.

The invention discloses a method and a system for detecting an antibacterial coating micro guide wire. The method comprises the following steps: applying a composite stress field to a guide wire to obtain stress distribution data; determining a stress response abnormal area according to the stress distribution data and applying dual-frequency vibration excitation to obtain nonlinear vibration response data and vibration energy dissipation data; force-sensitive fluorescent molecules are applied to the stress response abnormal area for treatment, and conformational changes of the stress response abnormal area are monitored to obtain preliminary spatial distribution data of the microcracks; injecting a multi-ion fluorescent tracer into the micro-crack area, and monitoring the migration rule of the multi-ion fluorescent tracer to obtain pH value distribution data and oxidation-reduction potential distribution data; bacterial suspension with specific fluorescence response is injected into the micro-crack area, and antibacterial activity evaluation data is obtained by monitoring the fluorescence response of the bacterial suspension. According to the technical scheme, the microcracks on the surface of the antibacterial coating micro guide wire are accurately detected and positioned, and the influence degree of the microcracks on the antibacterial function can be accurately evaluated.

The embodiment of the invention relates to a modeling and nonlinear vibration analysis method for a cone-column combined shell connected by a bolt and a flange. The method comprises the following steps: establishing a three-dimensional model of the bolt flange connection cone-column combined shell, performing simulation pretreatment on the model to obtain a finite element model of the bolt flange connection cone-column combined shell, setting parameters, applying acceleration excitation, and performing state setting; simulating calculation is conducted on the inherent frequency, the vibration mode and the structural vibration response under different excitation amplitudes under the set tightening torque, and a simulation result is verified through a modal test and a basic excitation response test; the dynamic softening phenomenon of an amplitude-frequency curve is explained from the two aspects of contact stress and contact state of a bolt flange connection interface; and analyzing the influence rule of the excitation amplitude, the bolt pre-tightening force and the flange thickness on the nonlinear vibration characteristic of the structure. According to the method, a finite element model is adopted and is combined with a test for comparative research, the modeling method is accurate in calculation result, and the modeling requirement of a complex actual structure can be met.

The present application provides a linear vibration motor, including a casing, a stator and a vibrator accommodated in the casing, and an elastic member for suspending the vibrator in the casing. The vibrator includes a mass block having a through-hole, and a magnetic circuit system. The magnetic circuit system includes a first magnetic steel arranged on one side of the stator and a second magnetic steel arranged on the other side of the stator. The first magnetic steel and the second magnetic steel are extended in parallel and arranged centrally symmetrically around a geometric center of the stator. The first magnetic steel includes a first magnetic steel portion, and the second magnetic steel includes a second magnetic steel portion. The asymmetric magnetic circuit structure can improve the nonlinear vibration when the stator is offset during the arrangement, which is helpful for improving the stability and yield of the test.

The invention discloses an automatic energetic solid tablet filling device which comprises a tablet feeding mechanism, a tablet discharging mechanism, a tablet conveying mechanism, a tablet conveying mechanism, a tablet conveying mechanism, a tablet conveying mechanism, a tablet conveying mechanism and a tablet conveying mechanism. The tablet feeding mechanism is installed on a rack and used for conveying energetic solid tablets in a vibration mode; the mold transferring assembly is mounted on the rack and used for achieving movement of the densely-arranged molds in the horizontal direction and the vertical direction; and the close-packed mold is mounted on the mold transfer assembly and used for storing the energetic solid medicine particles. The tablet feeding mechanism comprises a vibration tray, a linear vibration feeding mechanism, a filling mechanism and an orbital transfer mechanism. Compared with the prior art, the energy-containing solid medicine particle automatic filling equipment realizes energy-containing solid medicine particle automatic filling, solves the problems of high risk and dense operators in energy-containing material filling, and improves the overall safety of equipment and personnel in the equipment production process by matching with the safety design of an electrostatic detection system, a dust removal system and the like.

The invention discloses a motor-driven columnar vibrator suitable for subglacial lake drilling, and belongs to the field of polar subglacial lake drilling, an output shaft of an underwater motor rotates and drives a rotating part comprising a coupler, a cam transmission shaft and a cam to rotate synchronously with the rotating part, and the cam is a circumferential cam with a repeated curved surface; in the rotating process of the cam, the upper surface of the cam makes contact with the cam follower and pushes up a linear vibration component composed of a linear push rod, a vibration mass block, a cam follower installation frame, a spring base, a cantilever bearing and the cam follower, and in the process, a spring is compressed till the cam follower crosses the highest point of the curved surface of the upper surface of the cam; and the spring is released, so that the matching surface between the linear push rod and the frame top plate is impacted to generate vibration, and vibration force is transmitted to the frame bottom plate through the frame side plate to finish single impact. The radial size and the axial size of the vibrator structure can be saved to a great extent, so that the vibrator can be applied to small-diameter drilling.

The utility model provides a base damping device of a vacuum vibration press, which belongs to the technical field of damping and comprises a moving table and a damping component arranged at the top of the outer wall of the moving table, and the damping component comprises a damping seat, an auxiliary frame, a mounting frame, a damper, an angle frame, a limiting frame, a resistance reducing wheel, a supporting seat, a buffer spring and a limiting frame. The auxiliary frame is fixedly arranged at the corner of the bottom of the outer wall of the damping seat, and the limiting frame is embedded in the inner wall of the auxiliary frame. The damping assembly and a buffer spring form a rigid-flexible damping structure through a damper, high-frequency vibration can be absorbed at the same time, rapid energy consumption through damping can be achieved, low-frequency vibration can be elastically buffered through the spring, dynamic adjustment is achieved through a resistance reduction wheel, the resistance reduction wheel rolls in a limiting frame, impact force is dynamically dispersed in cooperation with a supporting base, stress concentration is avoided, and the service life of the damping assembly is prolonged. The rolling design of the resistance reduction wheel converts linear vibration into rotating kinetic energy, and direct damage of transverse impact to the structure is reduced.

The invention discloses an intelligent ring for a blind person, relates to the technical field of travel assistance for the blind person, and aims to solve the problem that an existing travel auxiliary tool for the blind person cannot provide comprehensive and timely travel assistance for the blind person, the intelligent ring comprises a wearing ring and a protection ring which are used for forming the ring, and is characterized in that a storage cavity is formed between the wearing ring and the protection ring; a 360-degree ultrasonic sensor array, a high-precision microprocessor, four groups of linear vibration feedback modules, a low-power-consumption Bluetooth 4.0 module and a rechargeable lithium battery are arranged in the accommodating cavity; the 360-degree ultrasonic sensor array comprises four sets of micro sensors which are located on the front side, the rear side, the left side and the right side of the containing cavity respectively, and the range of a single set of micro sensors is 120 degrees, so that all-directional coverage of the surrounding 360-degree space is achieved, and the blind can sense obstacles from all directions. The method has the advantage that the blind user can comprehensively and timely obtain the travel information.

An efficient multiphase-flow graded-separation, concentration, and purification system for argillaceous sandstone uranium ore includes a hydraulic tossing washing and scattering pretreatment device, a high-frequency linear vibration grading device, a first-stage multiphase-flow swirling grading device, an energy-gathering ultrasonic scrubbing device, a second-stage multiphase-flow swirling grading device, a high-frequency linear vibration dewatering device, an efficient uniform-mixing and activating system and a conditioning and pressing dewatering system. The present disclosure implements intensive mud-sand stripping of crushed argillaceous sandstone uranium ore, fine graded-separation of material, and efficient uniform-mixing and activating and deep efficient dewatering of fine-particle argillaceous material. Finally, four types of core material of coarse sand material, fine sand material, dry tailings residue and a high-concentration uranium ore leaching solution are formed through continuous work. Efficient multiphase-flow graded-separation, concentration and purification of the argillaceous sandstone uranium ore are implemented, and an intensive extraction rate of uranium ore resources is improved.

The invention relates to the technical field of fatigue tests, and discloses a vibration device for a fatigue test of a passenger ropeway carriage, the vibration device comprises a support control positioning mechanism and a height control positioning mechanism, the middle position of the support control positioning mechanism is connected with a vibration adjustment positioning mechanism, and the support control positioning mechanism comprises a positioning frame; a positioning column is fixedly arranged at the bottom end of the positioning frame, a fixing frame is fixedly arranged at the bottom end of the positioning column, and a plurality of supporting legs are fixedly arranged at the outer end of the fixing frame. The vibration mechanism can move along a square track, so that reciprocating linear vibration or rotating circular vibration is realized; due to the multidirectional vibration capability, the test working condition is closer to the actual operation scene, and the accuracy of fatigue life evaluation is improved; the vibration mechanism supports multidirectional movement and can simulate complex vibration working conditions caused by passenger walking, goods unbalance loading and the like, and the working condition coverage of the test is remarkably improved.

The invention provides a coupled vibration analysis method for a tungsten wire rope in a silicon single crystal pulling system, and belongs to the technical field of silicon single crystal growth of integrated circuits. The method comprises the following steps: constructing a lifting model of a tungsten wire rope in a silicon single crystal lifting system, and obtaining various lifting parameters of the tungsten wire rope; constructing a nonlinear vibration equation of the tungsten filament rope by utilizing the Hamiltonian principle according to each lifting parameter; and performing discretization processing on the nonlinear vibration equation by using a Galerkin method to obtain a linear vibration equation, solving the linear vibration equation, and obtaining a coupled vibration analysis result of the tungsten wire rope by using a solving result. The vibration suppression of the silicon single crystal pulling system can be realized, and the quality of the silicon single crystal is improved.

The invention relates to the technical field of automatic equipment, in particular to automatic pre-embedding equipment for pins and plastic parts, which comprises an injection molding machine main body, one side of the injection molding machine main body is provided with a robot pedestal, the upper end of the robot pedestal is provided with a six-axis robot, and the output end of the six-axis robot is matched and butted with a material taking clamp; a mounting table is arranged on one side of the six-axis robot, a pre-burying assembly is arranged at the upper end of the mounting table, and the pre-burying assembly comprises a pin pre-burying mechanism and a circular plastic part pre-burying mechanism. Through the synergistic effect of the vibration disc assembly and the straight vibration rail assembly, automatic sorting and conveying of pins and circular plastic parts are achieved; and by combining the precise actions of the six-axis robot and the material taking clamp, the pre-embedding speed is greatly increased, the problem of low manual operation efficiency is solved, manual intervention is reduced through the full-automatic process, and the labor cost is reduced.

The utility model discloses a frequency-adjustable linear vibrator which comprises a shell with a movable cavity inside, an air inlet guide rod penetrating through the shell and extending into the movable cavity, and a piston arranged on the air inlet guide rod in a sleeved mode and arranged in the movable cavity, and the movable cavity is divided into an upper cavity and a lower cavity through the piston. An upper air inlet channel capable of being communicated with the upper cavity and a lower air inlet channel capable of being communicated with the lower cavity are formed in the piston, and an air inlet of an air conveying channel in the air inlet guide rod is alternately communicated with the upper air inlet channel and the lower air inlet channel along with the reciprocating motion of the piston in the movable cavity. Each group of exhaust holes comprises an upper exhaust hole and a lower exhaust hole which are respectively communicated with the upper chamber and the lower chamber, in addition, a sealing device is correspondingly arranged in each group of exhaust holes, and during application, the opening number of the exhaust holes can be set through the sealing devices, so that the exhaust efficiency of the upper chamber and the lower chamber is influenced; and the application purpose that the vibration frequency of the piston can be adjusted can be achieved.

The invention provides a linear vibration motor which comprises a shell, a rotor, a stator and an elastic part, the rotor and the stator are accommodated in the shell at an interval, the elastic part is used for elastically suspending the rotor in the shell, and the stator is fixed in the shell and used for driving the rotor to vibrate; the rotor comprises two groups of magnetic steels which are arranged in parallel at intervals; the stator comprises a coil which is arranged between the two groups of magnetic steel and is spaced from the two groups of magnetic steel in the first direction, the winding plane of the coil is parallel to the vibration direction of the rotor, and the two opposite ends of the coil in the second direction are fixed to the two opposite sides of the shell respectively; the first direction, the second direction and the vibration direction of the rotor are perpendicular to each other. According to the linear vibration motor, the magnetic lines of force can be completely closed through the design of the double magnetic steels, so that the driving efficiency of the stator for driving the rotor is improved.

The invention discloses a bone conduction sleep pillow based on audio vibration analysis, which comprises a sleep pillow body, an integrally formed pillow back is arranged in the middle of the rear side of the sleep pillow body, and bone conduction loudspeakers are arranged on both sides of the top of the sleep pillow body; electromagnetic linear vibration assemblies are arranged at the tops of the sleep pillow body and the pillow back, and driving signals of the electromagnetic linear vibration assemblies directly come from audio low-frequency electric signals; the integrated processor comprises a Bluetooth audio processing system and has the functions of real-time frequency division and vibration signal extraction; and the power supply system provides electric energy for the sleep pillow. The two bone conduction loudspeakers are symmetrically distributed about the central axis of the sleep pillow body. By means of the processor, low-frequency components (20-150 Hz) in music signals are directly analyzed to drive the vibrator, vibration and music rhythm synchronization is achieved, and by means of the bone conduction loudspeaker, composite biomechanical stimulation is formed by a bone conduction sound field (50-4000 Hz) and low-frequency vibration.

The utility model relates to the technical field of vibration motors, and discloses a horizontal linear vibration motor, which comprises a shell with an accommodating space, a vibrator assembly and a stator assembly, the vibrator assembly and the stator assembly are vertically accommodated in the accommodating space at intervals, and the shell comprises a cover plate fixed with the stator assembly and an upper shell fixed with the vibrator assembly. An accommodating space is defined by the upper shell and the cover plate; the vibrator assembly comprises a cuboid mass block with a mounting groove, and a magnetic steel assembly fixed on the mass block and embedded in the mounting groove; the stator assembly comprises first auxiliary magnetic steel fixed on the cover plate and a coil arranged around the first auxiliary magnetic steel; second auxiliary magnetic steel is fixedly arranged at the position, corresponding to the first auxiliary magnetic steel, of the upper shell. The magnetic steel assembly comprises a first magnetic steel and a second magnetic steel which are arranged in parallel left and right, and a third magnetic steel and a fourth magnetic steel which are clamped between the first magnetic steel and the second magnetic steel and are stacked up and down corresponding to the position of the first auxiliary magnetic steel. The six-magnetic-steel structure of the vibration motor not only effectively reduces the stress of the elastic piece, but also has stronger vibration sense.

The invention discloses a gas-liquid-solid three-phase flow-induced vibration prediction method for a deep-sea natural gas hydrate riser. The method comprises the following steps: S1, introducing hypothetical conditions of nonlinear vibration of a multi-field coupling hydrate exploitation riser; s2, according to the assumed conditions, establishing a multi-field coupling hydrate exploitation riser nonlinear vibration control equation by taking a vertical axis parallel to the riser direction as a z axis and a downward positive axis, taking the upper part of the riser as an origin of coordinates, taking a direction parallel to the water flow direction as an x axis and taking a direction perpendicular to the water flow direction as a y axis; s3, establishing boundary conditions of the nonlinear vibration control equation of the multi-field coupling hydrate exploitation riser; and S4, solving the nonlinear vibration control equation of the multi-field coupling hydrate exploitation riser in combination with the boundary conditions. According to the method, the gas-liquid-solid three-phase flow-induced vibration of the deep-sea natural gas hydrate riser can be accurately predicted, and technical support is provided for ocean oil and gas resource exploitation.

The invention relates to a working condition following gear wear monitoring and predicting method based on a vibration signal, belongs to the technical field of gear transmission, and solves the problem that influence of different working conditions and different wear states of different positions of a gear cannot be considered in gear wear monitoring and prediction in the prior art. Comprising the following steps: S1, establishing a working condition Map graph based on dynamic working condition division of multi-source sensor fusion, and updating the working condition Map graph in real time; s2, establishing an Archard wear correction model, and calculating the wear extent of the gear; s3, establishing a gear nonlinear vibration model considering wear and clearance influence, and solving a vibration signal of a gear system; s4, a CNN-LSTM mixed wear diagnosis model is established, and training is carried out; and S5, acquiring and processing in real time to obtain a vibration signal of the gear system, and inputting the vibration signal into the CNN-LSTM mixed wear diagnosis model to obtain the current wear state probability distribution of the gear and the wear development trend prediction of the gear.

The present application provides a linear vibration motor, including a casing, a stator and a vibrator accommodated in the casing, and an elastic member for suspending the vibrator in the casing. The vibrator includes a mass block having a through-hole, and a magnetic circuit system. The magnetic circuit system includes a first magnetic steel arranged on one side of the stator and a second magnetic steel arranged on the other side of the stator. The first magnetic steel and the second magnetic steel are extended in parallel and arranged centrally symmetrically around a geometric center of the stator. The first magnetic steel includes a first magnetic steel portion, and the second magnetic steel includes a second magnetic steel portion. The asymmetric magnetic circuit structure can improve the nonlinear vibration when the stator is offset during the arrangement, which is helpful for improving the stability and yield of the test.

The utility model belongs to the technical field of vibration motors, and particularly relates to a foam structure, a linear vibration motor and electronic equipment, the foam structure is used for the linear vibration motor, the linear vibration motor comprises a shell and a vibrator assembly supported in the shell through a metal elastic sheet, and the linear vibration motor comprises a foam body, the foam body comprises a bottom wall and two opposite side walls, and a through groove parallel to the two side walls is formed between the two side walls; wherein one side wall is used for being connected with an oscillator assembly, the through groove is used for being clamped on a metal elastic piece, and the foam structure abuts against the metal elastic piece through the groove bottom of the through groove so as to be adaptively positioned in the non-vibration direction. By means of the structure, the assembly consistency of the foam structure can be achieved, and then the performance consistency of the linear vibration motor is guaranteed.

The linear vibration motor comprises a vibration unit arranged in a shell and an elastic piece which is fixed with the vibration unit and suspends the vibration unit in the shell, the vibration unit comprises a mass block fixedly connected with the elastic piece, and the elastic piece comprises an elastic part connected with two fixing parts. An elastic part comprises two elastic arms which are arranged at intervals in the first direction, a mass block comprises a main body part connected with an elastic part, the main body part comprises a side face connected with the elastic part, and the mass block further comprises protruding parts which protrude and extend towards a shell from the side face in the vibration direction. The elastic parts and the protruding parts are oppositely arranged at intervals in the second direction perpendicular to the vibration direction and the first direction, the problems that in the prior art, due to the fact that an elastic piece is only provided with a single elastic arm, the structure size is large, and plastic deformation is likely to happen are effectively solved, and meanwhile the size of the mass block is effectively increased; and the performance of the linear vibration motor is further improved.

The invention relates to the technical field of vibration motors, in particular to a linear vibration motor which comprises an upper shell, a middle frame, a first vibrator assembly, a first elastic piece, a second vibrator assembly, a second elastic piece, a stator assembly and a lower shell. The first vibrator assembly, the second vibrator assembly and the stator assembly are arranged in the containing space at intervals, the first vibrator assembly and the second vibrator assembly are elastically connected and fixed between the upper shell and the lower shell through the first elastic piece and the second elastic piece respectively, and the stator assembly is fixedly arranged on the lower shell. The stator assembly comprises a flexible circuit board and a coil, and the coil is arranged between the first vibrator assembly and the second vibrator assembly in parallel. The linear vibration motor is simple in structure and convenient to assemble, two-way vibration in the X direction and the Z direction can be achieved through the two vibrator assemblies at the same time, and different vibration sense experiences are provided.