440results about "Mechanical oscillations control" patented technology

The invention relates to the technical field of vibration and noise control, discloses a new energy automobile motor high-frequency vibration and noise active suppression system and method, and aims to solve the problems of poor high-frequency vibration and noise suppression effect, real-time performance, adaptive capacity and system cost complexity of an existing new energy automobile motor. The method comprises the following steps: acquiring and preprocessing motor operation state data, extracting high-frequency harmonic characteristics, and generating predicted harmonic characteristics in combination with working condition prediction; and superposing the self-adaptive compensation quantity to a motor voltage instruction, and driving an inverter through pulse width modulation to realize active suppression of high-frequency vibration and noise. The system comprises a data acquisition preprocessing module, a harmonic feature extraction module, a working condition sensing prediction module, a self-adaptive compensation quantity generation module and a pulse width modulation correction module. By the adoption of the technical scheme, efficient, real-time and self-adaptive suppression of high-frequency vibration and noise of the motor can be achieved, the level of the high-frequency vibration and noise is remarkably reduced, the driving comfort is improved, and the complexity and cost of the system are optimized.

The invention discloses a gravimeter active vibration isolation control method, and belongs to the technical field of gravimeter active vibration isolation, and the control method comprises the steps: S1, presetting a three-axis acceleration sensor and a gravimeter bearing platform, and detecting a space vibration signal of the gravimeter bearing platform in real time through the three-axis acceleration sensor; s2, the signal processing unit performs frequency domain decomposition on the space vibration signal; s3, establishing a feedforward control unit, a feedback control unit and a synthesis unit; s4, a multi-degree-of-freedom actuator is preset, and reverse compensation force is applied in the X-axis direction, the Y-axis direction and the Z-axis direction through the multi-degree-of-freedom actuator according to the composite control signal; and S5, the preset state monitoring unit samples the vibration suppression rates in three continuous sampling periods. The high and low frequency vibration components are dynamically divided according to the frequency-band energy accumulation proportion, the vibration interference model is established in combination with the high and low frequency vibration components, and compensation failure caused by model mismatch under complex working conditions is avoided.

An electronic system for controlling vibrations and / or inertial forces occurring at a plurality of areas of interest within an operating vehicle. The electronic device comprises circuitry configured to receive input data comprising sensor data from one or more environment sensors and / or one or more internal sensors; convert, by means of a machine learning system, the input data into actuator settings; and transmit the actuator settings to one or more actuators to control vibrations and / or inertial forces occurring at each of the plurality of areas of interest within the vehicle.

The invention relates to a driving circuit and a vibration reduction system, the driving circuit comprises a plurality of driving branches, the input ends of the plurality of driving branches receive control signals respectively, the output ends of the plurality of driving branches are correspondingly connected with a plurality of target devices used for outputting force respectively, and the plurality of driving branches comprise at least one first driving branch; wherein the first driving branch is configured to control the corresponding target device to be in a first output state when the received control signal meets a first preset condition, and control the corresponding target device to be in a second output state when the received control signal meets a second preset condition; the force output by the target device in the first output state is smaller than the force output by the target device in the second output state, so that the drive circuit can independently control the output of a single motor, the drive circuit can adapt to control scenes of large-range output and high-precision output at the same time, the control performance of the drive circuit is improved, and the power consumption of the drive circuit is reduced. And the application scene of the product is widened.

The invention provides an intelligent tracking and damping system for a photovoltaic support, and belongs to the technical field of intelligent light tracking and damping, and the system comprises an illumination collection module which is used for installing a preset sensor group on the photovoltaic support and collecting real-time illumination information; the light following adjustment module is used for determining a bracket angle coefficient based on the real-time illumination information and converting the bracket angle coefficient into a specific control motion parameter, and a control device adjusts the position of the photovoltaic panel according to the received control motion parameter and judges whether light following is completed or not through a preset light following algorithm; the vibration acquisition module is used for deploying a preset sensor at a key node of the bracket and acquiring vibration data of the bracket in real time; and the damping implementation module is used for analyzing the real-time vibration data and reducing vibration of the bracket based on an analysis result and a preset method. The stability and the power generation efficiency of a photovoltaic system in a complex environment are remarkably improved, and the system has relatively high intelligence and adaptability.

The invention relates to a vibration detection device and a control method thereof, and relates to the technical field of vibration, the vibration detection device comprises a first detection piece, a second detection piece, a driving unit and a control unit, the first detection piece of the vibration detection device does not need to adopt a fixing screw or pasting or other rigid installation forms; instead, the driving unit is used for driving the first detection piece to move, so that the first detection piece is in contact with the to-be-detected object for real-time monitoring and testing, repeated detection is facilitated, and the detection efficiency is improved. Besides, the vibration test value and the vibration reference value are calibrated through the control unit, after calibration, according to the corrected vibration test value, the control unit can set the pressure parameter corresponding to the vibration test value as the preset parameter, and under the preset parameter, each detection can be carried out under the preset pressure parameter, so that the detection efficiency is improved. And the authenticity and accuracy of the data are improved, so that the reliability of the test data is ensured.

The invention relates to the technical field of signal processing, in particular to a high-speed unmanned aerial vehicle structure servo elastic coupling vibration suppression control method, system and device, a medium and a program product. Obtaining a target control loop causing resonance; spectral analysis is carried out, and double-center frequencies causing resonance are obtained; a cascade wave trap with double center frequencies is designed; and the servo elastic coupling vibration of the unmanned aerial vehicle structure is suppressed. According to the method, the problems of difficulty in structure modification, narrow notch frequency range and large low-pass filtering delay of an existing structure servo elastic coupling resonance solving method are solved, the performance of a control system cannot be reduced, and the flight safety is ensured.

The invention discloses a cable parallel robot vibration suppression control method based on a mechanism model and data driving, and the method comprises the steps: carrying out the dynamic modeling of a cable-driven parallel robot, and solving the inherent frequency of each point in a working space; randomly selecting points in the working space, moving the movable platform to a selected position, exciting by using a counter-acting force device, and recording pose changes by using a vibration sensor; according to the actual inherent frequency of the vibration data identification system, taking the spatial position-inherent frequency residual data set as input to train a deep learning model describing the relationship between the position coordinates and the inherent frequency residual; and a controller is designed with the minimum inherent frequency vibration signal as a design target to perform vibration suppression control, and the inherent frequency of each position is obtained by summation of residual errors given by a dynamic model predicted value and a deep learning model. Through the method, different cable parallel robots can be rapidly inhibited, and the operation precision and the working stability of the tail ends of the cable parallel robots are effectively improved.

The invention discloses a new method for active control of global vibration of a helicopter body, and provides a method for active control of global vibration of a helicopter body by installing a piezoelectric laminated actuator on a main reducing support rod to control the vibration load of a rotor wing in order to solve the problems that the global vibration control effect of the helicopter body is poor and the transmission of the vibration load of the rotor wing to a helicopter body structure cannot be inhibited by a traditional structural vibration active control method. The invention relates to a novel active control method for global vibration of a helicopter body with a stay bar vibration load as a control target. The purpose of reducing the global vibration level of the helicopter body is achieved. The method can suppress the rotor vibration load transmitted to the helicopter body structure, has the advantage of efficiently suppressing the global vibration level of the helicopter body, and has the control convergence speed superior to that of a traditional method.

The invention discloses a high-position stacker comprehensive speed optimization vibration reduction method, which is used for performing comprehensive speed optimization on a large high-position stacker exceeding 32 meters, and specifically comprises the following steps of: proposing a system identification method based on a displacement sensor, and establishing a vibration parameter scale under the dynamic load uncertainty condition of the stacker; calculating an inherent frequency change characteristic average value and a damping ratio average value of the high-position stacker under the complex working condition so as to construct a zero-vibration differential input shaper; and after the zero-vibration differential input shaper is convolved with an S-shaped curve speed planning command, a comprehensive speed optimization curve is obtained, and the comprehensive speed optimization curve is input into a stacker control system to control the stacker. The vibration condition of the top end of the high-position stacking machine can be effectively restrained, and the real-time performance of open-loop control is achieved.

The application discloses a damping device and a damping method, which combines a friction generator with a damping component, so that the friction generator outputs an electric signal under the action of an external vibration source, and when the electric signal is transmitted to the damping component, the electric signal can adjust the inherent frequency of the damping component itself, so that the adjusted inherent frequency is different from the vibration frequency provided by the external vibration source, so that the damping component and the external vibration source cannot achieve resonance, thereby achieving the purpose of damping; and since the electric signal is provided by the friction generator, an external excitation power supply is not needed, the dependence on the external excitation power supply is reduced, and passive damping is achieved; in addition, the damping device does not need a complex structure, and only needs to combine the friction generator with the damping component to achieve damping, so that the structural complexity of the damping device is effectively simplified, the manufacturing cost of the damping device is reduced, and the manufacturing efficiency of the damping device is improved.

An active vibration reduction control method based on a self-adaptive neural fuzzy inference system belongs to the technical field of vibration isolation control, and comprises the following steps: constructing a system model and carrying out data acquisition; designing an ANFIS model based on the state variable of the platform; the ANFIS model automatically adjusts parameters of the fuzzy membership function through experimental data training; training the ANFIS model based on a mixed learning algorithm; the displacement and the speed of the platform are obtained in real time through a sensor and input into the ANFIS model, and real-time active vibration reduction control is achieved. Displacement and speed data of the platform are collected in real time and input to the ANFIS model, so that the system can dynamically calculate control signals, quickly respond to vibration changes, effectively suppress vibration, reduce the vibration amplitude of the system and guarantee the stability of the platform. Through a feedback loop of the sensor and the control system, the system can automatically adjust the control signal at any time according to the actual vibration state of the platform.

The invention discloses a multi-stage flexible load vibration suppression method and system, industrial equipment and a storage medium, and relates to the technical field of motor control, and the multi-stage flexible load vibration suppression method comprises the steps: carrying out the recursion processing of an initial rotating speed and an initial torque through vibration suppression parameters corresponding to a multi-stage flexible load, and obtaining a multi-stage flexible load vibration suppression parameter; generating a target rotating speed and a target torque; generating a position feed-forward instruction, a rotating speed feed-forward instruction and a torque feed-forward instruction according to the target rotating speed and the target torque; and industrial equipment is controlled according to the position feed-forward instruction, the rotating speed feed-forward instruction and the torque feed-forward instruction. The technical problem that an existing flexible system vibration suppression scheme is poor in scene adaptability is solved.

The invention provides a durability test system and method for a rotating speed ring of an electric drive assembly. The durability test system for the rotating speed ring of the electric drive assembly comprises a tool and a supporting base, wherein the top of the tool is provided with a plurality of damping and energy-consuming bases; the electric drive assembly is installed on the multiple damping and energy dissipation bases, and damping compressed springs are arranged on the damping and energy dissipation bases; the electric drive assembly operation control module is mounted on the tool; the test module is connected with the electric drive assembly operation control module, and the test module is used for inputting test parameters and a speed increasing and decreasing slope to the electric drive assembly operation control module; the electric drive assembly operation control module is used for controlling starting, stopping and the rotating speed of the electric drive assembly according to the test parameters and the speed increasing and decreasing slope. By controlling and slowing down rising and falling of the rotating speed of the electric drive assembly and reducing the updating interval of the slope of the rising and falling rotating speed, shaking generated by the electric drive assembly is reduced, and the reason is vibration generation. And secondly, based on the generation of the vibration which cannot be eliminated, the vibration is inhibited through an arranged tool.

An image pickup apparatus includes an image sensor configured to receive light and accumulate charges, a vibration generator configured to generate vibration, an image sensor control unit configured to cause the image sensor to perform an electronic front curtain operation to start accumulating the charges, and an electronic rear curtain operation to finish accumulating the charges, and a vibration control unit configured to control the vibration generator. The vibration control unit causes the vibration generator to generate first vibration before accumulating the charges is started and second vibration after the accumulating the charges are finished.

The invention relates to a vibration excitation method and system based on impedance identification, and the method comprises the steps: carrying out the frequency domain conversion of force-speed data obtained by a displacement closed-loop system, and obtaining the mechanical impedance of a drive point; performing flexibility compensation on the mechanical impedance of the driving point to obtain the real impedance of the structure end; extracting an imaginary part and constructing a matching residual error by using the real impedance of the structure end, correcting the excitation frequency of the current vibration exciter through gradient frequency, and iteratively determining the optimal excitation frequency of the vibration exciter meeting a convergence condition; mechanical active power generated by the vibration exciter is calculated under the optimal excitation frequency, dual-target optimization is carried out on the amplitude of the vibration exciter, and the optimal amplitude with the maximum mechanical active power and the minimum equivalent output of the actuator is obtained; based on the real impedance of the structure end, the matching criterion and the optimal amplitude, variable parameters are introduced to construct a source-side impedance model, a source-side impedance matching frequency domain interval is expanded through slow time mark setting parameters, and mechanical active power generated by a vibration exciter is coupled to a tested structure.

The invention relates to a method and a system for adaptively adjusting vibration compensation of an unmanned aerial vehicle based on a multi-band IMU (Inertial Measurement Unit), and the method comprises the steps: W1, in the process that the unmanned aerial vehicle executes a flight task, cooperatively collecting data information of vibration signals of an unmanned aerial vehicle structure based on a plurality of airborne vibration detection IMU arrays, and constructing an unmanned aerial vehicle vibration spectrum analysis model, and calculating the body dominant vibration frequency of the unmanned aerial vehicle to obtain the data information of the body dominant vibration frequency of the unmanned aerial vehicle, and optimizing the acceleration and angular velocity of the unmanned aerial vehicle by adopting an improved weighted average optimization algorithm based on dynamic fusion weight to obtain the optimized data information of the acceleration and angular velocity of the unmanned aerial vehicle. According to the method, the problem of measurement distortion of a single IMU in a resonance frequency band is effectively avoided, it is ensured that high-fidelity inertial data can be output under all working conditions such as low-frequency maneuvering, intermediate-frequency cruising and high-frequency disturbance, and the method can be deployed on a mainstream unmanned aerial vehicle platform and has good popularization value.

The invention relates to the technical field of vibration suppression, and discloses a multi-physics field cooperative control intelligent vibration suppression method and system, and the method comprises the following steps: S1, building a multi-physics field digital twinborn model based on a finite element analysis method, the multi-physical field at least comprises a coupling relationship among a pneumatic field, an electromagnetic field and a structural field, and the modeling of the fluid-structure interaction effect is included; and S2, based on the digital twin model, an improved particle swarm optimization algorithm is adopted to generate a control weight distribution scheme, and the control weight distribution scheme is used for dynamically adjusting the output proportion of a pneumatic actuator and an electromagnetic actuator. According to the method, the multi-physical field digital twinborn model containing the coupling relation of the pneumatic field, the electromagnetic field and the structural field and taking into account the fluid-solid coupling effect is established, so that the problem that the control precision is limited due to the fact that a single physical field control strategy is mostly adopted in a traditional vibration suppression method is solved.

The invention discloses a resonant frequency tracking control method and system for a diamond nitrogen vacancy color center, and belongs to the technical field of quantum sensing. The method comprises the following steps: setting an initial center frequency output by a microwave source; in the tracking control process, fluorescence signal changes generated by the diamond nitrogen vacancy color center under the microwave frequency modulation effect are recorded, a full-amplitude demodulation amplitude value R is obtained through demodulation, and whether the full-amplitude demodulation amplitude value R is smaller than a dead zone threshold value or not is judged; if yes, the center frequency output by the microwave source is not changed; if not, calculating the microwave frequency regulation quantity delta f according to the full-amplitude demodulation amplitude R; determining the adjusting direction of the center frequency f0 of the microwave source according to the phase-frequency characteristic and the real-time demodulation phase difference delta phi in the current frequency tracking control process; according to the microwave frequency adjusting quantity delta f and the adjusting direction, the center frequency of the microwave source is adjusted for resonant frequency tracking; wherein the phase-frequency characteristic is the characteristic of the demodulation spectral line on the two sides of the resonant frequency. The robustness and the accuracy of the resonance frequency tracking method are enhanced.

The invention provides a die cutting equipment error optimization method and system based on group collaboration, and relates to the technical field of die cutting machines, and the method comprises the steps: carrying out the spectrum analysis of a frequency characteristic curve of each piece of die cutting equipment, so as to divide an initial interference group; establishing a virtual spring damping network in the initial interference group, regarding each die cutting device in the initial interference group as a mass point, and determining a spring stiffness coefficient and a damping coefficient according to an actual distance between adjacent mass points; determining vibration mode characteristics of each die cutting device according to the spring stiffness coefficient and the damping coefficient, and converting a control signal generated according to the vibration mode characteristics into a parameter adjusting variable by using a preset control algorithm; and determining a vibration coupling relationship according to the collected vibration energy data of the initial interference group after the initial processing parameters are adjusted according to the parameter adjusting quantity, and determining an optimal production takt and a parameter compensation value according to the vibration coupling relationship. The technical problem that in the prior art, due to vibration coupling of a die cutting equipment group, the machining error cooperative control difficulty is large is solved.

The invention relates to a motor vibration suppression system, device and method based on active magnetic field compensation. The motor vibration suppression system comprises a vibration sensor which monitors the vibration condition of a motor and collects vibration data; the control device is used for generating a control signal according to the vibration data; the compensation module is used for generating a compensation electromagnetic field according to the control signal and generating reverse compensation force based on the compensation electromagnetic field for the motor; wherein the compensation module comprises a plurality of groups of electromagnetic coils and a driving unit electrically connected with the electromagnetic coils; and the driving unit adjusts the driving current on the electromagnetic coil according to the control signal so as to control the electromagnetic coil to generate a specified compensation electromagnetic field. The compensation electromagnetic field is actively generated according to the motor vibration data, the risk of motor abrasion is avoided, and a better damping effect and a wider application range are achieved.

The invention relates to a mechanical damping control device for ultralow-frequency vortex-induced vibration of a large-span bridge girder, and belongs to the field of bridge structure vortex-induced vibration control. Comprising a horizontal guide rail, a vertical guide rail, a horizontal guide rail support, a vertical guide rail support, two groups of connecting rods, a vertical mass block, a horizontal mass block, a vertical elastic spring, a horizontal spring, a vertical viscous damper and a horizontal viscous damper, the right end of the horizontal mass block is hinged to the right end of the first connecting rod, the right end of the second connecting rod is hinged to the middle of the first connecting rod, and when the static elongation of the vertical spring is zero, the horizontal spring is in a compressed state; when vortex-induced vibration occurs, transmitted energy is dissipated through the vertical tuned mass damper and the horizontal tuned mass damper, and therefore control over the vortex-induced vibration is achieved. The spring static elongation of the low-frequency vertical vibration reduction tuned mass damper can be remarkably reduced, and the defect that an existing damper is large in occupied space is overcome.

The invention belongs to the field of automatic picking, provides a vibration type blueberry harvester control system and method based on feedback control, and integrates machine vision and blueberry picking technologies. The camera is installed above the conveyor belt and collects images of the conveyor belt in real time, and machine vision utilizes a high-precision algorithm to accurately recognize blueberries and calculate the proportion of impurities, so that the speed of the conveyor belt is adjusted, and then the impurity processing time of the fan is reserved. The camera is installed above the blueberry harvesting disc, blueberry images in the harvesting disc are collected in real time, the proportion of immature fruits is judged through the convolutional neural network, and when the proportion is too large, the amplitude and frequency of the vibration picking device are reduced so as to reduce the falling rate of the immature fruits. In addition, the system also has remote monitoring and fault self-diagnosis functions, so that the management personnel can conveniently monitor the operation condition in real time.

The invention provides a high-temperature superconducting pinning suspension active and passive hybrid vibration isolation system and method, and relates to the technical field of vibration isolation, the vibration isolation system comprises a measurement and control system and a suspension system, and the vibration isolation method comprises the steps that a floater of the suspension system is stabilized at a balance position relative to a stator through suspension pretreatment; during external excitation, vibration data generated by a floater connected with a vibration isolated body relative to a stator is collected and processed, a controller processes the vibration data through an internally preset PID control algorithm and outputs a control signal, and a coil on the floater receives and outputs the control signal and executes the control signal to achieve a preset state. Self-stabilization suspension of the system can be achieved without external energy input, meanwhile, the solenoid coil is wound on the outer side of the permanent magnet, real-time active control over suspension force is achieved by adjusting transmission current of the coil, and therefore the problems that the vibration isolation frequency band of a passive vibration isolation system depends on the inherent frequency, and rigidity and damping cannot be adjusted are solved.

The invention discloses a ship low-frequency active control system and method based on an intelligent material and an adaptive algorithm, and relates to the technical field of ship vibration control. The remote monitoring management platform is in communication connection with an intelligent material layer module, a sensor network module, a self-adaptive controller module, a self-diagnosis module and a power supply module; the intelligent material layer module is used for sensing ship vibration by adopting an intelligent material and generating corresponding control force; the sensor network module is used for collecting ship vibration data in real time through sensors arranged at key parts of a ship. By integrating intelligent materials and a self-adaptive control algorithm, ship vibration can be sensed in real time, corresponding control force can be quickly generated, vibration can be effectively counteracted, and compared with a traditional passive control technology, the response speed is remarkably increased, the ship vibration can be responded in a shorter time, and therefore the safety and comfort of ship navigation are improved.

The invention belongs to the technical field of micro-vibration suppression, and particularly discloses an active vibration reduction control method and system based on multi-sensing information fusion, and the method comprises the steps: collecting a load vibration absolute speed signal, a load vibration acceleration signal, a relative displacement signal between a load and a base, and a base vibration absolute speed signal; based on the multi-sensing information fusion controller model and the collected signals, active control force is determined, and the active control force is used for counteracting vibration interference borne by the load; wherein the multi-sensing information fusion controller model is used for fusing output of a plurality of controllers to determine active control force; the controllers comprise a feedback controller used for processing load vibration absolute speed signals, a feedback controller used for processing load vibration acceleration signals, a feedback controller used for processing relative displacement signals and a feedforward controller used for processing base vibration absolute speed signals. According to the invention, the vibration suppression capability of the system can be greatly improved in a wide frequency domain range.

The invention belongs to the technical field of active vibration isolation, and particularly discloses an active vibration isolation method and system based on prediction and adaptive control. Comprising the following steps: carrying out multi-degree-of-freedom dynamic modeling on a vibration isolation system, taking the pose of a load as system output, taking the control quantity of an execution mechanism as system input, and uniformly expressing unknown dynamics caused by structural nonlinearity and disturbance as a nonlinear term; constructing an adaptive neural network state observer based on the kinetic model, and estimating a state which cannot be directly measured; the method comprises the following steps: acquiring historical operation data of a vibration isolation system, preprocessing the data, constructing an input time sequence and an output time sequence, and training a long-short-term memory neural network prediction model to generate a prediction signal representing future position information; and designing an adaptive control law according to the state estimation result and the prediction signal, obtaining a feedback control quantity, and superposing the feedback control quantity with a feedforward control quantity obtained based on the prediction signal to form a control instruction for driving an execution mechanism.

The invention discloses a master-slave shaft suppression coupling buffer damping method, and relates to the technical field of servo driver damping. The method comprises the following steps: realizing real-time communication and motion parameter exchange between a main shaft servo driver and a slave shaft servo driver through a special interface communication cable, calculating the torque upper limit of the slave shaft driver according to the torque of the main shaft driver and a preset damping parameter, and enabling the slave shaft driver to reversely move to offset the impact momentum of the main shaft; meanwhile, the speed and acceleration of the main shaft are obtained, the slave shaft driver moves reversely at the matched speed and acceleration, and it is ensured that the slave shaft driver can bear the impact of the main shaft by considering the load ratio. The method can effectively reduce the coupling effect and vibration, improve the stability and precision of the system, adapt to different working conditions, simplify the design and control process, and prolong the service life of the system.

The invention relates to the technical field of broadband vibration control, in particular to a broadband vibration control method and device based on acoustic black holes and distributed vibration absorbers. The method comprises the following steps: constructing a three-dimensional model of the acoustic black hole, and importing the three-dimensional model of the acoustic black hole into finite element analysis software; design parameters of the distributed vibration absorber are defined, and a spring-mass-damping system model of a distributed vibration absorber unit is established; based on a collaborative tuning strategy of a gradient descent method, collaborative optimization is carried out on acoustic black hole and distributed vibration absorber parameters, and broadband vibration control is realized; based on a finite element analysis result, analyzing a transmission path and efficiency of energy between the acoustic black hole and the distributed vibration absorber by utilizing a mathematical model for analyzing vibration energy transmission and dissipation; a vibration signal of the acoustic black hole is collected through an acceleration sensor, and the broadband vibration control effect is verified. The design not only pays attention to the suppression of vibration energy, but also considers the energy dissipation efficiency and the lightweight demand of the system.

The invention provides a motor transmission assembling system. The motor transmission assembling system comprises an assembling conveying line, a box cover temporary storage line and assembling equipment. The assembly conveying line and the box cover temporary storage line are conveying paths composed of conveying devices. The conveying device comprises a conveyor, a tray and a control system; the conveyor comprises a supporting frame and a transmission conveying piece, the transmission conveying piece is installed on the supporting frame, and a limiting device for limiting stopping or releasing of the trays is further installed on the supporting frame. Rollers are mounted on the lower surfaces of four corners of the tray; the outer sides of the rollers are exposed out of the edge of the tray; and the control system is electrically connected with the conveyor, the acceleration sensor, the display screen and the alarm device. The invention further provides control logic and an assembly method. According to the invention, the stability of long-distance conveying is ensured, and the problem of deviation or unbalance is not easy to generate. Unbalance or deviation of tray transfer due to vibration is prevented, the influence of vibration on assembly quality is avoided, timely treatment is achieved, system unbalance is avoided, automatic assembly is achieved, the product quality and the operation efficiency of an assembly line are improved, and the yield is high.