110 results about "Nonlinear vibration" patented technology

The invention discloses a machine tool control method and system based on mechatronics, and the method comprises the steps: outputting an optimal cutting track sequence according to the three-dimensional model features and material attribute parameters of a machined workpiece; based on the optimal cutting track sequence, motion interference among shafts of the machine tool is eliminated through dynamic weight distribution, and an anti-interference optimization machining instruction is generated; constructing a nonlinear vibration wave propagation model according to the coupling relation between the spindle rotating speed and the feeding speed, and generating a steady speed regulation and control signal; generating an energy efficiency optimal parameter set including motor torque, cooling power and lubricating frequency based on the energy consumption efficiency constraint condition and the steady speed regulation and control signal; and outputting a closed-loop control signal and synchronously updating the three-dimensional machining precision thermodynamic diagram according to the real-time data in the machining process and the predicted deviation of the digital twin model. According to the embodiment of the invention, global optimization, dynamic adaptation and efficient operation of the machine tool can be realized, and technical support is provided for intelligent upgrading of the modern manufacturing industry.

The invention discloses a nonlinear dynamic modeling method of a helical gear transmission system considering wear. The method comprises the following specific steps: step (1), establishing a time-varying meshing stiffness calculation model of a helical gear pair in a healthy state; (2) establishing a time-varying meshing stiffness calculation model of the wear fault helical gear pair; (3) establishing a helical gear tooth surface friction model under the condition of mixed elastohydrodynamic lubrication; (4) establishing a deformation equation of the tapered roller bearing; (5) establishing a helical gear transmission system model considering wear, and solving the nonlinear vibration characteristics of the helical gear transmission system under different wear degree faults of the helical gear; the method has the beneficial effects that the nonlinear dynamic model of the helical gear transmission system considering wear is established, and technical support is provided for related technologies of fault dynamic modeling of the current helical gear transmission system.

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 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 invention discloses a non-linear vibration detection device for a high-speed rotating viscoelastic plate, and belongs to the field of detection equipment, the non-linear vibration detection device comprises a supporting seat, an anti-vibration pad is fixedly connected to the outer surface of the upper end of the supporting seat, a supporting plate is fixedly connected to the outer surface of the upper end of the anti-vibration pad, and a control component is arranged on the upper side of the supporting seat. The control component comprises a connecting plate fixedly connected with the inner surface of the supporting plate, an adjusting rod is in threaded connection with the middle of the outer surface of the connecting plate, and a through groove is formed in the upper side of the outer surface of the adjusting rod. By arranging the control component, enabling the viscoelastic plate to rotate at the same speed and detecting and analyzing the nonlinear vibration parameters of the viscoelastic plate, an experimenter can conveniently carry out a control experiment, so that the influence of motor vibration on the vibration parameters of the viscoelastic plate can be better analyzed; and the vibration characteristics of the viscoelastic plate can be further compared, analyzed and researched, so that the detection error can be reduced to a certain extent.

Parameter optimization method for nonlinear vibration model of complex device, comprising: 1) constructing various structures of complex device into tree structure, to form tree-shaped complex device model subsystem, and carrying out sign convention for dynamic analysis; 2) establishing complex device dynamic model to obtain dynamic relationships among all parts of complex device; 3) according to contact and collision conditions in advancing process of physical complex device, adding constraint relationships among parts in dynamic simulation software; 4) on basis of dynamic simulation software, establishing virtual prototype model of complex device, and determining target parameter and optimization target; 5) simulating vibration characteristics of complex device for different levels of pavement spectrums and different vehicle speeds; 6) adding required input point and output point for virtual prototype model; 7) on basis of optimization algorithm of numerical solution in small sample deep learning, obtaining optimal parameter.

The invention discloses a modular analysis method and system for axial nonlinear vibration of a pancake winding of a transformer, and the method comprises the steps: constructing a winding dynamical model considering nonlinear factors, and guaranteeing that the model can reflect the influence of factors such as nonlinear characteristics of a material; meanwhile, balance between independent calculation and overall coupling of each layer of the winding needs to be solved, modular calculation of the pancake winding is achieved, accuracy and expansibility of calculation are improved, and the pancake winding vibration analysis method is suitable for winding vibration analysis under different conditions. The method can accurately analyze the axial nonlinear vibration characteristics of the pancake winding under complex working conditions.

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 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.

An ultrasonic surgical tool system with a tip capable of simultaneously vibrating in plural modes. The system includes a console capable of supplying a drive signal to the tip that includes plural components. Each component has a frequency characteristic that is based in part on the equivalent of current through the mechanical components of the tip. The frequency components are different from each other. Based on the application of drive signal the tip undergoes non-linear vibrations.

The invention discloses a low-frequency double-nonlinear quasi-zero-stiffness energy harvesting vibration isolator, and belongs to the technical field of nonlinear vibration control and energy harvesting. Comprising a supporting frame, an upper platform and a lower platform are horizontally installed on the supporting frame, and two vertical optical shafts are symmetrically installed and penetrate through the upper platform and the lower platform; the loading platform is used for bearing a vibration-isolated object and is mounted on the upper platform; the nonlinear negative stiffness structure is a bionic skeleton X-type mechanism arranged between the upper platform and the lower platform and provides negative stiffness restoring force; the non-linear positive stiffness structure is connected with the non-linear negative stiffness structure in parallel and provides restoring force which is non-linearly changed along with displacement; the energy harvesting unit comprises a copper film arranged on the inner side face of the supporting frame and a polytetrafluoroethylene film arranged on the outer side face of the upper platform, and the copper film and the polytetrafluoroethylene film form a friction nanometer generator. The problems that in the prior art, energy harvesting and ultralow-frequency vibration isolation energy harvesting cannot be carried out in a wider working frequency band are solved, and the vibration isolation energy harvesting efficiency can be effectively improved.

The invention discloses a functional gradient coating cone-cylindrical shell high-temperature vibration dynamics modeling and analysis method. The method comprises the following steps: establishing a linear vibration analysis model and a nonlinear vibration model considering temperature and amplitude dependence; identifying material parameters of the functional gradient coating-composite material combined shell and determining a corresponding fitting coefficient; preparing a functional gradient coating, coating the conical-cylindrical shell matrix structure with the functional gradient coating, and measuring geometric and material parameters of the matrix and the coating; building a high-temperature vibration test system, and measuring the dynamic response characteristics of the test piece under normal-temperature and multi-temperature working conditions; the theoretical model is verified based on an experimental test result, and a mechanism of influence of key parameters on the dynamic performance of the functionally gradient coating cone-cylindrical shell structure in a high-temperature vibration environment is further researched. The method has the advantages that calculation is easy and convenient, precision is high, a reliable theoretical tool is provided for thermal shock resistance design and life prediction of the structure in the extreme environment, and service safety and reliability are remarkably improved.

The application discloses an adjustable nonlinear dynamic vibration absorber and system, and has the technical scheme that a tuning mass block is slidably connected to the surface of a support plate, and first scissor structures are rotatably connected between the tuning mass block and the two ends of the support plate; the first scissor structures are provided with second scissor structures and dampers, the second scissor structures and the dampers can drive the first scissor structures to stretch and contract through elastic belts, the second scissor structures are provided with elastic elements for driving the second scissor structures to stretch and contract; the stretching direction of the elastic elements is parallel to the sliding direction of the tuning mass block, and is perpendicular to the damping direction of the dampers, so that the first scissor structures and the second scissor structures can realize vibration absorption through geometric nonlinearity when moving. The stiffness and damping characteristics of the application can be adjusted, and the linear elements can be used to realize nonlinear stiffness, damping and super-low natural frequency, and the problem of Duffing system instability that cannot be eliminated by traditional nonlinear vibration absorbers is solved.

The invention discloses a wind turbine generator bearing fault diagnosis method and system, and the method comprises the following steps: obtaining bearing vibration data, and building a data set; dividing the data set into a source domain and a target domain to obtain source domain sample data and target domain sample data; performing phase-space reconstruction on the source domain sample data based on a chaos theory algorithm to generate a chaos phase diagram; taking the chaotic phase diagram as input of a neural network, and extracting features of time and space scales; performing pre-training under multiple working conditions based on the bearing sample to obtain a pre-training model, and performing parameter migration on the pre-training model based on a migration learning strategy to obtain a CNN-DLSTM model after parameter migration; analyzing the bearing fault information, and matching a fault type label to obtain a fault diagnosis result; converting the strong nonlinear vibration signal into a chaotic phase diagram, and performing feature extraction and fault classification on the phase diagram by using a deep learning method; and the fault diagnosis precision is improved.

The invention relates to the technical field of electromagnetic measurement, in particular to a method for increasing a constant-speed section in motion of a power balance coil by introducing nonlinear vibration, and the method comprises the steps: introducing an odd harmonic current component meeting a first target condition into a drive coil of a target power balance, and carrying out the initial compensation of the coil, generating an initial coil speed curve, meeting a preset flat condition, of the coil according to the initial compensation result, and introducing a second harmonic current component meeting a second target condition into the driving coil based on the initial coil speed curve to carry out at least one secondary compensation, and generating at least one coil speed curve of the coil according to the at least one secondary compensation result, and determining that the coil moves in the target constant-speed section when the fluctuation quantity and the gradient of the at least one coil speed curve meet preset standards. Therefore, the problems that in the prior art, a coil movement speed curve is prone to fluctuating and inclining, and the accuracy and repeatability of a power balance measurement result are reduced are solved.

The invention discloses a nonlinear acoustic transducer control method and system based on an Aubry-Mather set, and belongs to the technical field of acoustic transducers. The method comprises the following steps: firstly, based on an Aubry-Mather set theory, constructing a nonlinear vibration model used for describing nonlinear vibration of a transducer diaphragm; secondly, based on a nonlinear vibration model, regional piezoelectric driving and dynamic phase regulation are carried out to simulate a quasi-periodic fluctuation mode; then, on the basis of fluctuation characteristics disclosed by the nonlinear vibration model, a multi-diaphragm collaborative vibration system is constructed, and quasi-periodic superposition of sound waves is realized by optimizing diaphragm space layout; and finally, based on stiffness parameters in the nonlinear vibration model, integrating a micro electro mechanical system (MEMS) process and a nonlinear material, and realizing equivalent nonlinear stiffness on a physical device through gradient polarization design. The dynamic adaptability, the energy transfer efficiency and the high-frequency output performance of the transducer in a broadband range are effectively improved, and the transducer is particularly suitable for ultrasonic imaging and other high-frequency acoustic application scenes.

The present invention discloses a variable-section arch nonlinear vibration damping device for a rotor system, comprising a disk, a rotating shaft, a variable-section arch, a rigid ring, and a limiting pin. The rotating shaft is mounted at the center of the disk, and an annular groove coaxial with the disk is provided on the side of the disk. A plurality of variable-section arches are evenly distributed circumferentially and assembled on the inner side of the annular groove. The rigid ring is separated from the variable-section arch by a predetermined distance and is located in the annular groove and on the outer side of the variable-section arch. The rigid ring is connected to the arch top of the variable-section arch by a limiting pin to limit the relative position of the arch top of the variable-section arch and the rigid ring, thereby preventing the contact position of the variable-section arch with the rigid ring from changing when the variable-section arch is deformed too much, and ensuring that the force application point of the variable-section arch is consistent under different deformations. The present invention can effectively suppress the vibration amplitude of the rotor system within a wide speed range, occupies less space than traditional nonlinear spring vibration damping devices, and is suitable for installation in rotor systems with limited space.

The present application belongs to the technical field of bridge wind tunnel test device, and provides a kind of wind tunnel test device simulating nonlinear vibration of bridge structure, including rigid model, rigid rod, rigid circular arc suspension arm, linear tensile spring, nonlinear elastic element and light high-strength fine rope.Nonlinear elastic element can adopt cable structure, membrane structure, nonlinear tensile spring, mechanical super material or superstructure.By designing the nonlinear stiffness characteristics of nonlinear elastic element, the layout mode and the combination mode of linear tensile spring, various target nonlinear stiffness modes can be realized to carry out large amplitude vertical torsional coupled flutter test of bridge structure under nonlinear stiffness.In the process of large amplitude vibration of model, the center hanging point of nonlinear elastic element and linear tensile spring can always maintain vertical displacement and deformation, and the device can ensure stable stiffness, damping, mass and mass moment characteristics.

An apparatus for measuring elastic properties of materials excites the material into nonlinear vibration to reveal, in a free and forced vibration signals, information about Young's modulus, internal stress, and material thickness obtained from nonlinear and linear vibration information.

The application discloses a double-coil structure electromagnetic damping nonlinear vibration isolator, which comprises a rigid structure and a damping structure matched with each other; the damping structure comprises a top cover, a first left limiting part, a first right limiting part, a first magnetic material, a first coil, a second right limiting part, a base, a second coil, a second left limiting part, a second magnetic material, a base connecting shaft and a part connecting shaft; the first left limiting part, the second left limiting part, the first right limiting part and the second right limiting part are arranged on the base. The nonlinear electromagnetic vibration isolator has the characteristics of damping nonlinearity, adjustable damping and function conversion, and the reliability problem of the ordinary nonlinear vibration isolator under the working condition of low-frequency large amplitude vibration is solved through the damping end, so that the vibration isolator has a better vibration isolation effect under the low-frequency working condition.

The utility model provides a chimney damping device, which belongs to the technical field of chimney damping, and comprises a mounting assembly and an adjusting assembly, the mounting assembly comprises a mounting track annularly arranged on the periphery of a chimney and a mounting seat slidably connected to the mounting track, and the mounting track is connected to the chimney; the adjusting assembly comprises a fixing rod connected to the mounting base and a balance weight mechanism connected to the fixing rod, the fixing rod extends in the radial direction of the mounting rail, and the balance weight mechanism is located at the end, away from the mounting base, of the fixing rod. The balance weight mechanism comprises a balance weight block connected to the fixing rod in a sliding mode and two elastic pieces connected to the balance weight block, and the two elastic pieces are arranged on the two sides of the balance weight block respectively along the extending path of the fixing rod. The utility model provides a chimney damping device which aims at solving the problem that when an existing tuned mass damper faces nonlinear vibration, the damping effect of the damper is poor.

The invention relates to a transformer winding vibration analysis method based on a fine integration method, and belongs to the field of power equipment. Aiming at the problem that an existing method is difficult to give consideration to high-frequency transient response capture precision and calculation efficiency, a multi-degree-of-freedom vibration equation is constructed based on an equivalent mass-spring-damping model, after the multi-degree-of-freedom vibration equation is converted into a state-space equation, recursive decomposition is performed on an index matrix through a fine integration method, and linear processing of electromagnetic force excitation is combined, so that the high-frequency transient response capture precision and the calculation efficiency are obtained. And high-efficiency and high-precision solving of the axial vibration of the winding is realized. According to the method, the characterization capability of high-frequency nonlinear vibration characteristics is effectively improved, numerical oscillation and accumulative errors are suppressed, and reliable technical support is provided for state monitoring and fault early warning of the transformer.

The invention discloses a motor bearing performance degradation state evaluation method and system, and relates to the technical field of bearing performance evaluation, and the method comprises the following steps: building a time-frequency response mapping model of a rolling body fatigue micro-crack region, and calculating the performance degradation state of a motor bearing according to a vibration signal, rotation speed fluctuation and load change of the motor bearing in the operation process; extracting an energy distribution curve of the micro-lag region, and constructing a multi-scale phase delay matrix according to the energy distribution curve; and constructing a local energy coupling identification network based on a phase delay matrix output by the time-frequency response mapping model. Accurate identification and early degradation prediction of motor bearing microcrack energy behaviors are realized through time-frequency mapping and a phase delay matrix, and self-healing adjustment and closed-loop control of an energy field are realized through a self-adaptive phase inversion and anti-lag compensation mechanism, so that nonlinear vibration instability is effectively inhibited; the running stability and the service life of the bearing are obviously improved.

The nonlinear vibration isolator containing electromagnetic damping and crank rocker mechanism of the present application comprises a crank rocker, a base, a base rear cover, a first magnetic material and a second magnetic material; the first magnetic material and the second magnetic material are fixedly arranged on the base, are sleeved with the base and are embedded in a cavity of the base containing a rotor, and the base is screwed with the base rear cover. The vibration isolator can select the nonlinear form of stiffness and damping according to the working load, and the electromagnetic damping has no friction resistance, so that the vibration isolator has superior reliability and applicability.

The invention relates to a rotor and stator rub-impact test device of a labyrinth seal structure, belongs to the technical field of rub-impact vibration tests of gas turbines, and solves the problem that an existing test device cannot simulate a complex nonlinear vibration phenomenon in an elastic supporting state. The rub-impact test device comprises a rotating shaft, a rotor elastic supporting assembly, a stator supporting seat, a rotor labyrinth drum and a stator honeycomb drum, the rotating shaft is supported by the rotor elastic supporting assembly; the rotor labyrinth drum and the rotating shaft are fixedly connected and synchronously rotate; the stator honeycomb drum is fixedly mounted on the stator supporting seat; the stator honeycomb drum and the rotor labyrinth drum are coaxial, and the edge of the stator honeycomb drum and the edge of the rotor labyrinth drum are mutually overlapped; the tail end of the rotor labyrinth drum is provided with a labyrinth top, and when the rotating shaft rotates, the labyrinth top can rub against the stator honeycomb drum. According to the invention, the rub-impact response of the rotor and the stator of the gas turbine can be simulated under laboratory conditions.

The invention discloses a parameter regulation and control method for a nonlinear vibration absorber of a thin-wall component, which comprises the following steps of: acquiring signal data of a piezoelectric module under the control of an external acting force of a piezoelectric plate for driving a thin-wall component plate module and the piezoelectric module; based on the bias input voltage, the signal data sequentially passes through the circuit module and the control module to obtain the control input voltage and the control output voltage of the control module and the bias output voltage of the circuit module; based on the signal data and the external acting force, parameters of an equivalent circuit are obtained through the thin-wall structure dynamic model and the control model, and the parameters of the equivalent circuit are used for regulating and controlling parameters of the nonlinear vibration absorber; and based on the signal data, the control input voltage, the control output voltage, the bias input voltage and the bias output voltage, linear parameters and nonlinear parameters of the control module are obtained, so that the nonlinear parameters are matched with capacitance parameters in the parameters of the equivalent circuit, and the linear parameters are matched with inductance parameters and resistance parameters in the parameters of the equivalent circuit.

The present application belongs to the technical field of structure vibration isolation and reduction, and particularly relates to a vertical quasi-zero stiffness limiting vibration isolation device with adjustable load. The device comprises a bearing plate, an upper limiting plate, a lower limiting plate, a positive stiffness mechanism, a negative stiffness mechanism, a connecting rod and an adjusting support part. The positive stiffness mechanism is arranged between the bearing plate and the upper limiting plate, and the negative stiffness mechanism and the adjusting support part are arranged between the upper limiting plate and the lower limiting plate. The adjusting support part comprises four supporting cylinders and eight round-hole sliders. The connecting rod connects the positive stiffness mechanism and the negative stiffness mechanism, and a central connecting block is arranged on the connecting rod. One end of the negative stiffness mechanism is connected with the central connecting block, and the other end is connected with a round-hole slider. By adjusting the pre-compression coefficient of the inclined elastic element of the negative stiffness mechanism, the stroke of the round-hole slider and the position of the central connecting block on the connecting rod, the quasi-zero stiffness characteristic is maintained at the initial static force balance position, and the nonlinear vibration isolation effect of high static stiffness and low dynamic stiffness is realized.

The application provides a risk domain control method and system based on train formation operation risk cause analysis, belongs to the technical field of train operation control, and realizes real-time perception of formation state information, realizes adjacent train state information interaction based on vehicle-vehicle communication technology, takes low brake anti-skid system efficiency and communication link establishment failure between formation trains as a risk source, takes train formation collision as an accident result, constructs a risk situation propagation model by using a dynamic Bayesian network, and performs sensitivity analysis and sorting on each risk node, uses nonlinear vibration theory and Rayleigh equation to describe vibration characteristics and a micro evolution process in the change of the risk situation, takes the sensitivity weight value of the node most influencing the collision accident occurrence probability as a damping coefficient of the Rayleigh equation, and explores the relationship between the control variable and the damping coefficient based on damping control, so that the risk domain converges to an initial safe state. The application can realize risk domain control for train formation operation from a system level.

The application discloses a multi-stable electromagnetic energy capturing vibration absorber, and belongs to the field of vibration suppression and energy capturing. The multi-stable electromagnetic energy capturing vibration absorber comprises a nonlinear vibration suppression device and an electromagnetic multi-stable energy capturing oscillator installed thereon. The nonlinear vibration suppression device is designed based on the technical principle of a quasi-zero stiffness vibration isolator, multi-stable motion is realized through the structural design of the electromagnetic multi-stable energy capturing oscillator, and the vibration energy capturing performance is further improved. The problems that the existing vibration isolation-energy capturing integrated device can only realize single-stable small-amplitude oscillation, vibration energy cannot be fully converted, the potential well width is limited, and large-amplitude motion cannot be realized under low-frequency conditions are solved.