128 results about "Vibration Problem" patented technology

The invention relates to an active suppression control method for mechanical vibration of a railway vehicle, which comprises the following steps of: acquiring vibration signals of a vehicle body chassis, a bogie frame and a wheel set axle box in real time through a sensor array, and generating a vibration data set through filtering and noise reduction; performing multi-degree-of-freedom coupling feature analysis on the data set based on a vibration analysis model, and extracting vibration coupling features of vehicle body vertical bending, bogie snaking oscillation and wheel set torsional resonance modes; generating a vibration intensity trend matrix through time-frequency conjoint analysis, and indicating the vibration intensity change of each component in real time; when the vibration intensity exceeds the limit, parameters of a damper, a vibration absorber and an actuator are dynamically adjusted, and a vibration suppression instruction set is generated; and finally, the actuating mechanism is driven to cooperatively suppress the multi-mode coupling vibration. According to the method, the composite vibration problem of vehicle body shaking, bogie buffeting and wheel rail impact under the high-speed working condition is solved, and therefore the vibration suppression real-time performance and the cooperative control precision are improved.

The invention discloses a vibration solving method for an elliptical perforated plate in any shape based on an elliptical energy element, and belongs to the technical field of thin-wall structures, and the method comprises the steps: carrying out the overall mapping of the elliptical perforated plate in any shape, building an elliptical equation in a dimensionless coordinate system, and carrying out the Boolean operation modeling of geometry; constructing a boundary condition function simulation constraint; simulating board deformation according to a first-order shear deformation theory, and constructing a global trial function in combination with a Legendre polynomial and a boundary condition function; establishing a total energy functional based on a minimum potential energy principle and a Ritz method, solving a total energy functional stationary value, and obtaining element calculation formulas in the stiffness matrix and the mass matrix; and constructing an elliptical energy element based on local mapping, and performing numerical integration on each element of the matrix based on the elliptical energy element and completing vibration problem solving. According to the method, an energy functional and a numerical integration formula are both constructed on a square solution domain in an overall mapping stage, so that the calculation solution process of the elliptical perforated plate in any shape is completely standard.

The present invention relates to the technical field of concrete vibration, and in particular to an intelligent concrete vibration method and system. The method comprises determining concrete flow parameters based on sampled image information, determining whether concrete vibration parameters are qualified based on the concrete flow parameters, determining whether concrete vibration parameters are qualified based on bubble variation characterization values, and adjusting the concrete vibration parameters when abnormalities are determined. The vibration parameters include vibration frequency, vibration amplitude, and vibration duration. Vibration problems existing during on-site construction can be promptly identified, and vibration parameters can be adjusted when abnormalities occur, thereby ensuring the quality of concrete vibration.

The invention relates to a vertical high-speed motor active and passive vibration reduction system, which comprises a motor body, a motor base, a controller, a vibration sensor and an integrated active and passive pneumatic damping actuator, and is characterized in that the actuator is arranged between the motor body and the motor base; the vibration sensor is in signal connection with the motor body; the input end of the controller is in signal connection with the vibration sensor, and the output end of the controller is in signal connection with the high-speed switch pneumatic servo valve. According to the vertical high-speed motor active and passive vibration reduction system and vibration reduction method, a controller, a high-speed switch pneumatic servo valve and other components form an active damping system; and the damping pore plate and the auxiliary air chamber jointly form a built-in passive damping system. The passive damping system processes broadband vibration, and active control burden is reduced; and the active damping system achieves accurate suppression, and the overall energy efficiency ratio is increased. The active damping system and the passive damping system work in cooperation to jointly solve the vibration problem, so that the vibration problem of the vertical high-speed motor is rapidly and effectively suppressed.

A variable-speed thin-wall shell turning vibration suppression method is suitable for the problem of turning vibration caused by poor rigidity of a thin-wall shell, belongs to the technical field of machining, and comprises the following steps: step (1), preliminarily determining an optimal turning speed range Smin-Smax of the shell; step (2), preliminarily determining the speed a1 of increasing or decreasing the rotating speed of the main shaft along with the change of the Z-axis point position; (3) if the composition structures of the turning molded surface are various, Z-coordinate theoretical connection points among the composition structures are determined; (4) on the basis of numerical software, the machining method according to the claim 1 is adopted, and respective Z-axis point position reduction rates a2 are set for different composition structures; calculating actual connection point positions among the composition structures, comparing the actual connection point positions with the theoretical connection point positions in the step (3), and modifying a2 to enable the error between the actual connection point positions and the theoretical connection point positions in the step (3) to be within 0.01 mm; and (5) turning is conducted, and the vibration reduction effect is tested.

The invention discloses a vibration reduction bionic boring bar based on hedgehog thorns and biological eggshells, and relates to the technical field of boring bars, the vibration reduction bionic boring bar comprises a boring bar body, a cavity is formed in the boring bar body, the bionic eggshells which are transversely distributed at equal intervals are fixed in the cavity, and longitudinal reinforcing ribs are fixed in the bionic eggshells; the first transverse reinforcing rib, the second transverse reinforcing rib, the third transverse reinforcing rib and the longitudinal reinforcing rib which are designed based on hedgehog thorn bionics are fixed in the boring bar body, so that buckling and damage of the boring bar body are delayed, and the boring bar has an excellent external force resisting effect; the bionic eggshell which is designed in a bionic mode based on the thin shell structure of the biological eggshell is fixed in the boring rod body, so that stress distribution in the boring rod body is more uniform, the stress concentration effect is smaller, the mechanical efficiency is improved, and compared with an existing common solid boring rod, the effects of improving rigidity and reducing vibration are achieved; the vibration problem of the boring rod can be effectively solved, and the boring machining precision and machining efficiency are guaranteed.

The invention discloses an oil-film-free elastic ring and a linear and nonlinear dynamic characteristic design method thereof. The method comprises the following steps: firstly, determining stiffness demand values of fulcrums according to critical rotating speed requirements, designing an initial structure of the elastic ring according to the stiffness demand values of the fulcrums, and performing linear and nonlinear stiffness analysis on the initial structure; then critical rotating speed analysis and nonlinear rigidity sensitivity analysis during nonlinear rigidity of the elastic ring are carried out, and secondary structural design of the elastic ring is carried out according to sensitive factors; and finally, carrying out second-time structure nonlinear rigidity analysis and dynamic characteristic analysis, and if the requirements are not met, carrying out repeated iteration until the requirements are met, and determining a final structure scheme of the elastic ring. Linear and nonlinear stiffness effects are comprehensively considered, structural parameters of the elastic ring are optimized, it is ensured that dynamic characteristics of the elastic ring within the working rotating speed range meet design requirements, the problems of critical rotating speed drifting and vibration are avoided, and the design precision and operation stability of a rotor system are improved.

The invention discloses a comprehensive method and system for reducing noise and vibration of a driving shaft of a pure electric vehicle, relates to the technical field of pure electric vehicles, and aims to solve the problem that a traditional passive noise reduction and vibration reduction measure cannot be adaptively adjusted according to the real-time vibration state of the driving shaft and the change of the running working condition of the vehicle. In order to solve the problem that the noise and vibration problems of a driving shaft are prominent, the method comprises the following steps that S1, initialization is conducted, specifically, when a vehicle is started, initialization setting is conducted on a vibration sensor, an actuator and algorithm parameters through a controller, and default parameters in a vehicle electronic control unit are obtained; s2, signal acquisition: a vibration sensor acquires vibration signals of a driving shaft in real time, a vehicle speed sensor and an acceleration sensor acquire driving state information of a vehicle, and the signals are transmitted to a controller; and S3, signal processing and calculation, wherein the controller preprocesses the collected vibration signals. The driving shaft has the advantage that the noise and vibration of the driving shaft can be effectively reduced.

The invention belongs to the technical field of fans, and particularly discloses a control method and system for an efficient axial flow fan based on the adjustable blade angle, and the method comprises the steps that the air volume, pressure data and environment variables in the operation process of the axial flow fan are collected in real time through a sensor; mapping the collected data into specific demand indexes under different working conditions, wherein the specific demand indexes comprise target air pressure, target air volume and an allowable fluctuation range; according to the obtained variable working condition demand indexes, a fuzzy logic algorithm is adopted to process overall blade angle distribution, and a macroscopic mode of segmented adjustment is determined; initial angle values of adjacent segments are extracted from the determined macroscopic mode, and if it is judged that the difference between the initial angle values exceeds a preset threshold value, an intermediate angle sequence with smooth transition is obtained through interpolation calculation; obtaining an obtained intermediate angle sequence, and applying a neural network model to predict a potential vibration problem for an airflow non-uniform region to obtain an optimized segmented angle correction value; the problem that in the prior art, a draught fan is poor in stability under variable working conditions is solved.

The invention relates to the technical field of communication, in particular to a volume adjustment method, device and equipment of a loudspeaker and a computer readable storage medium. The loudspeaker is arranged in the terminal, an internal cavity of the terminal is a rear cavity of the loudspeaker, and the method comprises the following steps: determining an air pressure value in the rear cavity when the loudspeaker plays an audio signal; when the air pressure value is in the preset interval, the system volume is increased, so that the air pressure value is larger than the maximum value of the preset interval; wherein the preset interval comprises a corresponding air pressure range when the target structure on the terminal resonates under the target volume. As the loudspeaker is provided with the open type rear cavity, the volume of the audio signal played by the loudspeaker can cause the vibration of the air in the rear cavity and can influence the air pressure value, and the air pressure value and the volume have a corresponding relation, when the air pressure is determined to be in the preset interval which is easy to cause resonance, the air pressure value can be increased by increasing the volume, and the resonance can be easily caused. And the shell vibration problem caused by the resonance phenomenon is avoided.

The present invention provides a dynamic balancing method for eliminating unstable vibration of the shafting, which can conveniently and effectively solve the abnormal vibration problems of high and intermediate pressure rotors commonly found in specific types of units. According to the shafting vibration characteristics of this type of unit, the method creatively adopts simultaneous counterweight addition on multiple balance planes inside and outside the high and intermediate pressure rotors, and uses a specific calculation method to eliminate the abnormal vibration of the high and intermediate pressure rotors caused by the decline of shafting stability through a single application of counterweight. This method minimizes the number of unit starts and stops during the vibration fault handling process, and is an effective dynamic balancing method for eliminating abnormal vibration of steam turbine generator units that has been proven through practice.

The invention discloses a strong impact load operation robot tail end vibration suppression method, which comprises the following steps: taking transmission mechanism data and tail end vibration measured by a combined force-visual sensor as input in an impact operation process of a robot, preprocessing, and then adopting a model driving and data driving method to establish a prediction model of the robot tail end vibration. Model predictive control (MPC) is adopted, closed-loop control is conducted on tail end vibration of the robot in each control period, active disturbance rejection control (ADRC) is introduced to restrain nonlinear discontinuous vibration generated in the impact process, and active vibration restraining in the impact process is achieved. And detecting the vibration of the tail end of the robot after suppression, and proportionally compensating suppression errors in the next corresponding impact process by using a self-learning method. And after multiple times of compensation tends to be stable, a compensation curve is recorded and called in the subsequent impact process. According to the method, the nonlinear and discontinuous vibration problems of the tail end of the impact load operation robot can be effectively solved, and the operation stability of the impact robot is improved.

A vibration-damping cylindrical roller bearing with adjustable radial clearance and a method for adjusting the clearance thereof relate to the technical field of rolling bearings. The purpose of the present invention is to solve the vibration problem caused by insufficient radial preload, which causes rolling element slippage, manufacturing accuracy, installation errors, external abnormal loads, and the like during the operation of the cylindrical roller bearing. The present invention quickly adjusts the bearing clearance by arranging a preload adjustment vibration damping body made of damping metal inside the rolling element of the cylindrical roller bearing, thereby improving the operating stability of the cylindrical roller bearing, especially the high-speed cylindrical roller. At the same time, the preload adjustment vibration damping body made of damping metal supports the rolling element at the core of the rolling element, does not affect the bearing load-bearing performance, and avoids contact between the preload adjustment vibration damping body and the raceway, thereby attenuating the vibration transmitted by the rolling element. The present invention can obtain a vibration-damping cylindrical roller bearing with adjustable radial clearance and a method for adjusting the clearance thereof.

The present application relates to the field of gas turbine technology, and more particularly to a dynamic balancing method for the misalignment vibration problem of a gas turbine unit shaft system, which comprises the following steps in sequence: step A, implementing a first dynamic balancing weight scheme on a first weight plane of the gas turbine rotor; and step B, implementing a second dynamic balancing weight scheme on a second weight plane of the gas turbine rotor, wherein the weight angle of the second dynamic balancing weight scheme is 180 degrees different from the weight angle of the first dynamic balancing weight scheme. The dynamic balancing method for the misalignment vibration problem of the gas turbine unit shaft system according to the present application selects two weight planes to implement opposite weight, and the generated weight bending moment can balance the additional bending moment, so that the vibration condition of the unit is obviously improved. Different from the traditional influence coefficient method, the dynamic balancing method according to the present application directly attacks the essence of the vibration problem, reduces the number of starting machines and the resulting psychological pressure, saves considerable test cost, and has good application effect and promotional value.

The utility model relates to the technical field of power batteries, and discloses a hanging point nut for a battery box body, which comprises a nut body, the nut body comprises a rectangular block, a baffle is arranged on the lower surface of the rectangular block, a column body is arranged on the lower surface of the baffle, and the baffle is provided with an anti-loosening assembly through a connecting assembly. The nut body and the gasket are matched to form a whole through the arranged connecting assembly, at the moment, the nut body cannot rotate relative to the gasket due to the vibration problem, and the good anti-loosening effect is achieved.

The invention relates to a natural gas boiler noise reduction method and a vibration suppression device in the technical field of natural gas boilers, the noise reduction method comprises the steps S1 to S5, and the vibration suppression device comprises a sensing and diagnosis module, an active control module, a passive treatment module and a central processing and closed-loop optimization unit. According to the technical scheme, dynamic, multi-target collaborative and closed-loop optimization is realized based on a data model and a collaborative technology; the problem of sound source accuracy is solved through multi-source sensing and intelligent diagnosis in the steps S1-S2, the problems of effectiveness and collaboration are solved through active and passive multi-physics field cooperative control in the steps S3-S5, and the problems of adaptability and long-term effectiveness are solved through a device-based central closed-loop optimization unit. Therefore, fundamental, intelligent and systematic treatment of noise and vibration problems of the natural gas boiler is realized.

The utility model relates to a tool for milling an outer side rib of a machine shell, which not only can improve the machining efficiency of the machine shell, but also can reduce the labor intensity of workers, simultaneously can ensure the machining quality, and can prevent a cutter vibration phenomenon when the machine shell is machined by a vertical machining center. A circular through hole is formed in a vertical plate in the mounting seat, and a pin through hole penetrating through the front and back surfaces of the vertical plate is formed in the vertical plate; the rotating disc is composed of a first cylindrical section, a second cylindrical section and a third cylindrical section, the first cylindrical section is arranged on one side of the second cylindrical section, and the third cylindrical section is arranged on the other side of the second cylindrical section; a machine shell to be machined is rotatably installed between the two installation bases through the two rotary discs, and limiting pins are inserted after the pin through holes and the corresponding threaded holes are communicated. The tool has the advantages that the tool not only can improve the machining efficiency of the machine shell, but also can reduce the labor intensity of workers; and secondly, not only is the machining quality guaranteed, but also the cutter vibration problem can be prevented.

The application discloses a tubular vortex reducer and an aero-engine, and aims at weakening the vibration problem existing in the tubular vortex reducer, improving the stability and the drag reduction effect. The technical scheme is as follows: the tubular vortex reducer comprises a vortex reduction pipe, a support ring and a damping sheet. The vortex reduction pipe is arranged in the installation hole of the support ring and is fixed by a clamping ring, is used for guiding the airflow to flow to the shaft center from the air inlet hole on the first stage disc; the support ring is a hollow annular structure, is coaxial with the rotor disc, and is used for installing the vortex reduction pipe; the clamping ring is used for fixing the bottom of the vortex reduction pipe between the clamping ring and the support ring, and prevents the vortex reduction pipe from moving along the installation hole to the shaft center of the support ring; the damping sheet is a circular arc sheet structure, is sleeved into the top of the vortex reduction pipe during installation, the center of the damping sheet is provided with a circular hole with the same diameter as the outer cylindrical surface of the vortex reduction pipe, the radial position of the annular damping structure relative to the vortex reduction pipe is set by setting the circular arc radius of the damping sheet; and the fastener is used for fixing the support ring and connecting the damping sheet.

The present invention provides a modular installation method for high-altitude ventilation ducts in exhibition halls, belonging to the technical field of ventilation duct installation. The modular installation method for high-altitude ventilation ducts in exhibition halls includes the following steps: arranging ventilation ducts on the top of the exhibition hall building model to establish a ventilation duct model; performing modular decomposition on the ventilation duct model to determine the positions of ventilation openings and ventilation duct modules; lofting and positioning to review the installation positions of the ventilation duct modules; opening ventilation openings on the top of the exhibition hall and installing ventilation connectors; fabricating ventilation ducts in sections and assembling them into ventilation duct installation modules; laying rubber shock pads, hoisting and installing the ventilation duct modules, and connecting them to the ventilation connectors; performing anti-rust treatment and heat preservation treatment on the surface of the ventilation ducts and the connection parts with the ventilation connectors, and arranging reinforcement members at equal intervals on the surface of the ventilation ducts; welding and fixing the reinforcement members to the top surface of the exhibition hall building; The present invention is beneficial to solving the vibration problem and noise problem after the installation of ventilation ducts.

The invention discloses an internal expansion type numerical control lathe fixture for a thin-walled cylinder workpiece. The internal expansion type numerical control lathe fixture comprises a chuck body, a fixture body, a positioning cover, an expansion sleeve, a locking block and a locking wrench, the other end of the chuck body is connected with the clamp body; the positioning cover is connected with the clamp body, and the outer surface of the positioning cover makes contact with the outer surface of a workpiece to achieve workpiece positioning. The expansion sleeve is in conical fit with the clamp body, and the expansion sleeve expands to enable the outer surface of the expansion sleeve to make contact with a workpiece so as to abut against and clamp the workpiece; the locking block is connected with the expansion sleeve, the locking block is in threaded connection with the clamp body, and the expansion sleeve is controlled to be expanded and shrunk through rotation of the locking block; and the locking wrench is connected with the locking block. The expansion sleeve is matched with the conical surface of the clamp body, expansion of the expansion sleeve is controlled through threaded connection of the locking block, the thin-wall cylindrical workpiece is clamped by the expansion sleeve, the deformation of the part is reduced, the form and location tolerance of the part is guaranteed, the problem of machining vibration of the thin-wall workpiece is solved, and the machining efficiency and the machining quality of the part are greatly improved.

The present application relates to rail transit vibration reduction technical field, especially to a kind of vibration reduction system for station bridge integration structure key position, including the key position damping mechanism located below conversion beam and above load-bearing column, the key position damping mechanism is located between conversion beam and load-bearing column, the key position damping mechanism includes main force support, auxiliary force support, the main force support is located in the axial direction of supporting bridge pier conversion beam node position, to bear the vibration load transmitted by bridge pier, upper auxiliary force support is supported at six node positions of the main load-bearing position of conversion beam, indirectly bear the upper vibration load dispersed by conversion beam;The present application is strong, and development prospect is good.With more and more large urban traffic hubs that integrate multiple traffic load forms in one body in domestic completion, the vibration problem of station bridge integration structure highlights, and the present application device system is specially proposed for this problem.

The present invention provides a femur of a doll robot, a doll robot, and a manufacturing method thereof. [Solution] The thigh has a one-piece molded structure, with each component integrally molded using a selective laser melting process and no mechanical connecting joints. The thigh includes a skeleton, skin, and a first isodense lattice filled between the skeleton and skin. The skeleton has a "local case thickening + second isodense lattice" structure, with the skin being a thin case of the same thickness, integrating the skeleton and skin, and the first isodense lattice added between the skeleton and skin. The skeleton includes a case, a first reinforcing plate, a second reinforcing plate, and a second isodense lattice filled in the skeleton's internal space. This invention effectively avoids vibration problems caused by the mechanical connections of plastic exterior components during robot movement, saves leg component assembly time, simplifies layout design, and effectively reduces the total weight of the leg components provided that their rigidity meets usage requirements, thereby contributing to extending the service life of the thigh components.

The application discloses a workpiece vibration suppression structure for cutting machining and a balance adjusting method thereof, and relates to the technical field of cutting machining.The workpiece vibration suppression structure comprises a vibration acquisition module, a rotating speed detection module, a data processing module, a display and early warning module and a communication module; the vibration acquisition module acquires a workpiece vibration signal; the rotating speed detection module detects the rotating speed of a main shaft and calculates a cutting speed; the data processing module analyzes the correlation between the cutting speed and vibration intensity, compares a preset threshold value, and realizes early warning; and the communication module realizes signal transmission with an external execution mechanism.The adjusting method dynamically solves the vibration problem caused by unreasonable cutting speed through initialization setting, real-time data acquisition, data processing analysis, cutting speed adjustment or mechanical balance adjustment.The application can realize real-time monitoring of vibration and cutting speed in the cutting process, accurate positioning of vibration causes, dynamic adjustment of machining balance, improvement of machining quality and efficiency, and prolongation of the service life of equipment.

The invention discloses a dynamic stability augmentation method for a rotor system of a centrifugal compressor, the rotor system comprises a rotor part, a bearing part and a sealing part, and the dynamic stability augmentation method comprises the following steps: establishing a finite element analysis model of a rotor-bearing system based on a design scheme of the rotor part and the bearing part; optimizing a rotor part and a bearing part based on a finite element analysis model; establishing a finite element analysis model of the rotor-bearing-sealing system based on the rotor part, the bearing part and the sealing part; optimizing a sealing element based on the rotor-bearing-sealing system model; and obtaining the rotor system after power stability augmentation. By optimizing each part in the rotor system, namely the rotor part, the bearing part and the sealing part, on one hand, the dynamic stability of the rotor system can be effectively improved, and on the other hand, the vibration problems such as collision and abrasion of the rotor and the stator can be avoided.

The invention belongs to the technical field of floating tunnel vortex-induced vibration suppression, and discloses a floating tunnel vortex-induced vibration suppression method based on a tuned mass damper. According to the method, suppression measures are taken for the vortex-induced vibration problem of the floating tunnel, the tuned mass damper is applied to the floating tunnel, energy generated by vortex-induced vibration of the floating tunnel is absorbed and dissipated, and the purpose of weakening the vortex-induced vibration of the floating tunnel is achieved. According to the method, the problems of tunnel structure deformation and fatigue failure caused by the vortex-induced vibration of the floating tunnel can be effectively avoided, and the vortex-induced vibration of the floating tunnel is effectively inhibited. Due to the fact that the tuned mass damper has the advantages of being simple in structural form, low in manufacturing cost and the like, the construction cost of the floating tunnel can be greatly saved, the construction cost is greatly reduced, and good social and economic values are created.

The invention discloses a suspension bridge construction wind resistance mode which comprises the steps that classified wind resistance is conducted through a catwalk structure, a hoisting system, a stiffening beam, a construction simulation test device and control measures, and all components can resist wind singly or cooperatively; the catwalk structure is arranged in a bridge construction area, and the catwalk structure comprises a wind-resistant system; the stiffening beam is arranged above the catwalk structure, and dynamic characteristic analysis is carried out on the stiffening beam in the construction process so as to control vibration; the hoisting system is connected with the catwalk structure and the stiffening beam and used for hoisting the stiffening beam, and the hoisting system conducts wind-induced vibration response research on the stiffening beam section in the hoisting process in the typhoon period; by means of the systematic wind-resistant design, the wind-induced vibration problem in the construction process of the large-span suspension bridge is solved, construction safety is guaranteed, a construction organization scheme is optimized, and remarkable technical progress and practical value are achieved.

This invention discloses a combined ammonia synthesis heat recovery device and method that is vibration-resistant, hydrogen corrosion-resistant, and operates under high temperature and high pressure. The ammonia synthesis heat recovery device includes a waste heat boiler and a boiler feedwater heater. The waste heat boiler includes a furnace shell, a furnace cavity, and a steam outlet pipe. The boiler feedwater heater includes a heat exchanger shell, heat exchange tubes, a left end cap, and a right end cap. The heat exchanger shell is composed of a left cylindrical section, a middle cylindrical section, and a right cylindrical section connected in sequence. The middle cylindrical section is axially fixed inside the furnace shell by a fixing plate assembly. It has an outlet at the top and an inlet at the bottom, and both the outlet and inlet communicate with the furnace cavity. This invention combines the boiler feedwater heater and the waste heat boiler into one unit, eliminating the need for a heated boiler feedwater pipeline, reducing heat loss in the pipeline, and improving heat exchange efficiency. It also solves the vibration problem caused by vaporization in the boiler feedwater pipeline.

This application discloses a disturbance control method, device, refrigerator, and storage medium, relating to the field of motor control technology. The method includes: performing spectral analysis on the original disturbance signal of the compressor to determine the fundamental frequency and signal type of the original disturbance signal; determining a target suppression signal based on the signal suppression strategy corresponding to the signal type, the fundamental frequency, and the original disturbance signal; and performing disturbance control on the compressor based on the target suppression signal. Through this method, the original disturbance signal is processed and suppressed using signal suppression strategies corresponding to different signal types. Based on the suppressed signal, the system achieves effective control of various types of periodic vibrations, successfully addressing vibration problems caused by external disturbances to the compressor, thereby significantly improving the overall performance of the equipment.

The invention relates to a vibration analysis method of a hydraulic pump, which belongs to the technical field of vibration of the hydraulic pump, converts the vibration problem caused by flow pulsation and pressure pulsation of the hydraulic pump into excitation for describing a vibration system of the hydraulic pump, and establishes a multi-degree-of-freedom vibration system of the hydraulic pump for actual calculation. The vibration frequency and the vibration response of the hydraulic pump under the specified working condition are estimated or predicted, the vibration and noise generation mechanism of the hydraulic pump is revealed, and the design level of the hydraulic pump is improved.

The utility model provides an ore sorting machine, and belongs to the technical field of ore sorting. The conveying belt is arranged at the bottom of the stock bin; the ray detection mechanism is arranged below the output end of the conveying belt and is used for performing ray detection on the ore and feeding back a detection result to the controller; the pattern recognition mechanism is arranged below the output end of the conveying belt and is used for photographing and detecting the ore and feeding back a detection result to the controller; the sorting execution mechanism is arranged below the ray detection mechanism and the pattern recognition mechanism and is used for sorting the ores which are output from the conveying belt and fall down according to the control of the controller; according to the ore sorting machine, ore is conveyed only through the conveying belt, and the vibration problem of a vibration feeding machine is avoided. And moreover, as the ray detection mechanism and the pattern recognition mechanism are adopted to jointly detect the fallen ores, the detection precision and screening efficiency of the ores are improved, and the conveying speed of the conveying belt can be better adapted.