73 results about "Rotor vibration" patented technology

According to the bearing rigidity optimization and vibration reduction design method for the rotor and the bearing system, under the condition that the structural form of the rotor and the bearing system is not subversively adjusted, the elastic bearing and the extrusion oil film damper are arranged and designed, and the bearing rigidity of the rotor and the bearing system is optimized. The fulcrum rigidity is reduced to change the strain energy distribution of the rotor and adjust the critical rotating speed, and the vibration level of the rotor, especially vibration caused by sudden unbalance and transcritical of the multi-fulcrum rotor, is suppressed.

The invention discloses a rotary machine dynamic balance optimization method based on an attitude performance correlation model, and relates to the technical field of rotary machine dynamic balance optimization. Comprising the following steps: S1, synchronously collecting rotor vibration signals and temperature field data through temperature and vibration sensors, carrying out real-time calibration on structure parameters, substituting a temperature compensation algorithm to calculate interference components, and outputting pure vibration deviation data subjected to temperature compensation; the structural parameters comprise a rotor thermal expansion coefficient, a bearing radial clearance temperature attenuation coefficient and inherent or dynamic characteristic parameters related to material properties, geometric dimensions and connection states of the rotary machinery. The method has the advantages that through deep combination of vibration and temperature, a temperature-frequency spectrum-amplitude three-dimensional coupling traceability matrix is constructed; multi-feature matching is achieved through a fusion algorithm, temperature-dominated vibration sources and mechanical-dominated vibration sources can be clearly distinguished, and the accuracy of the dynamic balance optimization direction is guaranteed.

The invention discloses a rotor vibration adjustment prediction method and system based on deep learning, and belongs to the technical field of rotor vibration control. The method comprises the following steps: receiving a vibration amplitude, a phase, a blade number and geometric parameters; analyzing the phase into sine and cosine components, interacting with a vibration value, converting geometric parameters into physical characteristics such as a span-chord ratio and rotational inertia, and constructing a 31-dimensional characteristic vector; a multi-layer perceptron model is trained for 2-8 blades, the input of the multi-layer perceptron model is the 31-dimensional feature vector, and the output of the multi-layer perceptron model is the balance weight adjustment amount of each non-reference blade; and performing feature processing on real-time data, inputting the processed data into a corresponding model, obtaining a prediction scheme, and estimating the vibration reduction amount. According to the method, high-precision, rapid and self-adaptive rotor vibration prediction and adjustment are realized by fusing a physical mechanism and deep learning, and the maintenance efficiency and the flight safety are remarkably improved.

It is described a method of damping a vibration (15) of one or more rotor blades (5) of a wind turbine (1), the rotor blades being coupled to a rotor (3a) of a wind turbine generator (3), during an operation mode different from a power production mode, the vibration in particular including an edgewise vibration (14) out of a rotor plane (15), the method comprising: monitoring a characteristic (17), in particular including magnitude and / or phase and / or frequency, of the vibration (14); determining a torque reference (21, Tref) based on the characteristic of the vibration which is suitable for damping the vibration; generating a torque by the generator (3) according to the torque reference (21, Tref).

The present disclosure provides a method for evaluating the influence degree of water turbine generator rotor vibration on stator low-frequency vibration, relating to the technical field of water turbine generators. The method includes: decomposing the first vibration waveform of the water turbine stator and the second vibration waveform of the rotor to obtain the fundamental wave and the harmonic wave respectively; sorting the fundamental wave and the harmonic wave of the stator based on the waveform vibration amplitude to obtain a first sorting result; sorting the fundamental wave and the harmonic wave of the rotor based on the waveform vibration amplitude to obtain a second sorting result; when the stator fundamental wave and the harmonic wave are in the same phase relationship, the rotor fundamental wave and the harmonic wave are in the same phase relationship, and the first sorting result is consistent with the second sorting result, it is determined that the cause of the stator low-frequency vibration is the rotor vibration. The present disclosure can quickly and effectively evaluate whether the stator low-frequency vibration is from the rotor, realize the rapid troubleshooting of the fault cause, help to reduce the fault search range, shorten the fault finding and processing time, and reduce the downtime of the water turbine generator set.

The invention relates to the technical field of flywheel energy storage, in particular to a flywheel energy storage equipment predictive dynamic balancing device and system based on photon perception. The sensing module is embedded into the end face of the rotor body; the control module is connected with the sensing module to receive transmission; the execution module is arranged along the circumference of the rotor body and is connected with the control module so as to be driven by the control module; the safety mechanism is located in an annular cavity formed in the rotor body and connected with the rotor body so as to be driven by centrifugal force. The beneficial effects of the invention are that the photonic crystal fiber network unit collects rotor vibration, displacement, stress, temperature and other data in real time and predicts the unbalance trend, the control module generates an adjustment strategy, the execution module is driven to carry out counterweight compensation and unbalance correction, and the system is kept stable.

The invention discloses a steam extraction and condensation type steam turbine stable in operation, and belongs to the field of steam turbines.The steam extraction and condensation type steam turbine stable in operation comprises a base, a bearing shell is fixedly connected to one side of the top of the base, a steam input pipe is fixedly connected to the top of the bearing shell, a bearing seat is fixedly connected to one side of the bearing shell, and a rotating shaft is rotationally connected to the interior of the bearing seat; a stabilizing assembly used for reducing vibration of the steam turbine is fixedly connected between the top of the base and the bearing shell and comprises a plurality of fixing columns fixedly connected into the stabilizing assembly at equal intervals. A pure mechanical stable assembly composed of a fixing column, a sliding balance weight sleeve, a damping ring and a spring is arranged and is in linkage with a rotating shaft or a bearing shell through a connecting arm, a reciprocating plate and the like, harmful vibration needing to be dissipated in a traditional design is converted into reciprocating mechanical energy capable of being utilized, an external power source or complex control is not needed, and the energy consumption is reduced. Therefore, the real-time and self-adaptive suppression of the vibration of the rotor can be realized.

The invention provides a brushless motor efficiency operation monitoring method, which comprises the steps of capturing each phase current signal in real time from an operation environment of a brushless motor, extracting a current amplitude and a phase angle of the current signal, identifying normal distribution and abnormal deviation of each phase current amplitude, and obtaining a preliminary three-phase current amplitude difference degree; the determined radial force eccentricity and the determined eccentric angle are obtained and compared with the rotor vibration displacement collected at the same time, the periodic distribution of the vibration displacement is recognized, and therefore the quantitative correspondence of the vibration amplitude and the force eccentricity is obtained; the offset space of the phase difference is correspondingly evaluated according to the quantification of the vibration amplitude and the force eccentricity, and the phase compensation angle is dynamically adjusted by adopting a PID control algorithm to optimize the electromagnetic tension distribution, so that the magnitude and the direction angle of the adjusted radial resultant force are obtained.

This invention relates to a vibration suppression method based on high-precision closed-loop synchronous rotating coordinate transformation. First, a dynamic model of the deflection of a magnetically levitated rotor affected by mass imbalance is established. Then, a synchronous vibration controller based on a high-precision closed-loop synchronous rotating coordinate transformation method is used to track the synchronous frequency disturbance component, and a high-precision closed-loop synchronous frequency signal detection method is employed to improve the detection accuracy of the synchronous frequency vibration signal. Finally, the synchronous frequency vibration signal is eliminated by inverting and compensating the original system, thereby eliminating the synchronous frequency disturbance current and the synchronous frequency vibration torque. This method overcomes the problem of low detection accuracy of synchronous frequency signals in traditional synchronous rotating coordinate transformation methods, effectively improving the suppression effect of synchronous frequency disturbance current, and providing a new control method for unbalanced rotor vibration control. This invention belongs to the field of magnetically levitated rotor control and can be used for unbalanced vibration control of two-degree-of-freedom deflection of magnetically levitated rotors.

The invention provides a magnetic suspension generator rotor vibration suppression device and method, and belongs to the technical field of magnetic suspension generators, and the device comprises an electromagnetic bearing, a passive magnetic bearing and a damper; the electromagnetic bearing comprises an iron core and two coil assemblies, the iron core is installed on the outer wall of the rotor, and the two coil assemblies are arranged around the iron core; the passive magnetic bearing comprises an inner-ring permanent magnet and an outer-ring permanent magnet, the inner-ring permanent magnet is mounted on the outer wall of the rotor, the outer-ring permanent magnet is mounted on the inner wall of the generator shell, and the two corresponding permanent magnets have the same magnetism; the damper is installed on the generator and provided with a damping body and a stress sensor, one end of the rotor is connected to the damping body, and one end of the damping body is connected to the stress sensor. According to the magnetic suspension generator rotor vibration suppression device provided by the invention, by virtue of the radial and axial targeted suppression design, the out-of-control galloping of the rotor caused by excessive vibration is effectively avoided, and the operation stability and safety of the generator are guaranteed.

The invention relates to an analysis method for analyzing the vibration behavior of an electric motor comprising a stator and a rotor inserted into the stator, wherein the analysis method includes the following steps: a. Setting the rotor into vibration by a1. mechanical, or a2. is electromagnetically excited, or a3. the rotor is set into rotation by operating the motor. In one step b. The vibration behavior of the rotor is recorded via at least one motor winding intended for the operation of the motor. A corresponding analysis device is also described.

The invention discloses a variable-stiffness magnetorheological fluid elastic vibration isolator for a variable-speed rotorcraft, which comprises a closed cavity formed by a magnetic flux outer cylinder, a magnetic flux inner cylinder and an annular magnetorheological elastomer connected between the magnetic flux outer cylinder and the magnetic flux inner cylinder, inertia liquid is filled in the cavity, and a magnet exciting coil is arranged in an outer ring groove of the magnetic flux inner cylinder. The magnetic flux outer cylinder, the magneto-rheological elastomer and the magnetic flux inner cylinder form a closed magnetic circuit, and the magnetic field intensity is changed by adjusting the current of the magnet exciting coil, so that the shear modulus of the magneto-rheological elastomer is continuously and reversibly adjusted and controlled, and online adjustment of the rigidity of the vibration isolator is achieved. The inner cylinder connected with the magnetic flux inner cylinder is provided with an inertia channel, when external vibration is introduced, liquid flows in the channel, and inertia force opposite to exciting force is generated at an anti-resonance frequency point to achieve efficient vibration isolation. The variable vibration frequency of the rotor wing is dynamically matched through the electronic control rigidity, the problems that a traditional vibration isolator is narrow in frequency band, and a mechanical frequency conversion scheme is slow in response and complex in structure are solved, and the vibration isolator has the advantages of being fast in response and compact in structure.

The invention relates to a variable-clearance extrusion oil film damper based on an axial stepped oil film ring, belongs to the technical field of rotor vibration control, and solves one of the problems that damping adjustment of a rotor supporting structure in the prior art needs repeated disassembly, the test accuracy is low and the consistency is poor. A stepped oil film ring is arranged on the inner wall face of the oil film outer ring, and a plurality of annular step faces with different depths are machined in the axial direction. A damper oil inlet hole and a damper oil outlet hole which are through are formed in the annular step surface; the oil film outer ring sleeves the outer side of the positioning reference part to form an oil film gap; oil is sealed in the oil film gap to form an annular oil film; the axial positions of the oil film outer ring and the positioning reference part are adjustable; annular step surfaces with different depths are switched to be matched with the positioning reference component to form annular oil films with different thicknesses, and different damping gears can be switched. Quick switching of damping gears is achieved by adjusting axial positioning of the oil film inner ring.

The invention relates to the technical field of motor equipment, and discloses a motor rotor and a rotor vibration control method, the motor rotor is used for being installed in a stator of a motor, and the motor rotor comprises an iron core and a permanent magnet; the number of the iron cores is multiple, and the multiple iron cores are sequentially stacked together. A mounting hole is formed in the center of the iron core, and a rotating shaft is fixed in the mounting hole in a penetrating manner; the iron core is provided with a plurality of magnetic slots; the multiple magnetic grooves are distributed in the circumferential direction of the mounting hole in a surrounding mode. The number of the permanent magnets is in one-to-one correspondence with the number of the magnetic slots; the permanent magnets are clamped in the magnetic slots; the outer circle of the iron core corresponding to the interval area of every two adjacent magnetic grooves is a plane. Electromagnetic noise and vibration of the motor are obviously reduced from the source, and running quietness is improved. And the torque pulse generated when the rotor rotates is reduced.

The invention discloses a pre-tightening force-based anti-loose ultra-deep blind hole large-size high-strength bolt which is characterized by comprising a head part, a rod body and a tail part with a thread which are connected in sequence, a blind hole is formed in the head portion and the rod body along the central axis of the high-strength bolt, and a spiral flow guide groove continuously extending to the bottom of the blind hole is formed in the inner wall of the blind hole. The invention further discloses a turbine disc connecting structure, and the turbine disc connecting structure is formed by heating, connecting and assembling a plurality of turbine discs through the high-strength bolt. According to the large-size high-strength bolt which does not need an additional anti-loosening structure and is provided with the ultra-deep blind hole, stable pre-tightening force can be continuously kept under the complex working condition of the gas turbine only by means of tension pre-tightening, it is ensured that three-stage turbine disc connection is gapless, the coaxiality and rigidity reach the standard, and the problems that rotor vibration exceeds the standard, and parts are damaged due to fatigue are effectively avoided. Meanwhile, the bolt structure and turbine disc assembling process is simplified, the number of parts is reduced, the manufacturing cost and maintenance difficulty are reduced, and the overhaul downtime is shortened.

The application discloses a kind of surge interference suppression methods of magnetic suspension centrifugal compressor, steps include: the single-channel magnetic suspension rotor system dynamics model is constructed by analyzing magnetic suspension rotor system;Surge disturbance characteristic analysis is carried out, and surge interference dynamic subsystem model is constructed;Based on single-channel magnetic suspension rotor system dynamics model and surge interference dynamic subsystem model, interference observer is constructed, and interference estimation error dynamic law is obtained;Based on interference estimation error dynamic law, the pole of interference observer is configured using pole placement method, and observer gain is obtained;Gain after interference observer is embedded in PID controller, and controller output design is carried out;The differential equation of the motion of magnetic suspension rotor system is substituted into controller output, and surge suppression is carried out.The application can effectively reduce the rotor vibration caused by pressure fluctuation during surge, reduce the possibility of structural damage caused by magnetic suspension rotor instability, and improve the system disturbance suppression capability and reliability.

The invention belongs to the technical field of rotor dynamics, and discloses a blade tip clearance rapid prediction method in a maneuvering flight state. Additional load excitation and additional parametric excitation caused by maneuvering flight are derived based on the beam unit and the concentrated mass. A finite element model of the birotor-bladed disc-cartridge receiver coupling system is established based on a beam-shell hybrid model, additional load excitation and additional parameter excitation caused by maneuvering flight are fused, the finite element model of the birotor-bladed disc-cartridge receiver coupling system in a maneuvering flight state is finally established, and gaps of blade tips are calculated through a numerical integration method. A blade tip gap prediction model is constructed based on an artificial neural network, model training is completed based on a numerical calculation result serving as a training set, and finally rapid gap prediction under different working conditions is achieved. According to the method, the influence of centrifugal deformation of the blade, vibration displacement of the rotor, maneuvering flight deformation and other factors on the blade tip clearance is effectively considered, the morphology of the complex blade is comprehensively considered, and the model generalization ability is high.

The invention provides a rotor vibration displacement signal correction method and system, relates to the technical field of displacement signal correction, and solves the problem that multi-deviation coupling cannot be processed in the prior art through a constructed structured two-stage correction mechanism, and achieves the integrity, adaptability and programmability of a correction strategy. Compared with a traditional single-parameter deduction or fixed-proportion normalization method, the method has the advantages that the geometric authenticity and diagnosis reliability of the axis track are remarkably improved, the method is particularly suitable for an industrial field environment in which sensor installation errors, thermal deformation and gain mismatch coexist, and a solid data basis is provided for high-precision state monitoring of rotating machinery.

The invention discloses a high-precision binocular vision rotor three-dimensional vibration measurement method based on segmentation constraint, and the method comprises the steps: collecting a rotor vibration video at a first visual angle through a first collection device, and constructing a first vibration image data set; synchronously utilizing a second acquisition device to acquire a rotor vibration video under a second visual angle, and constructing a second vibration image data set; camera calibration is carried out on the binocular vision acquisition devices according to the calibration plate, and unit conversion coefficients under the first acquisition device and the second acquisition device are obtained; deducing the value of an included angle between two acquisition devices in the binocular vision acquisition device; extracting a first preset number of images from the first vibration image data set and the second vibration image data set, respectively marking the images, and dividing the marked images into a training set and a verification set; taking the training set and the verification set as the input of an infinitesimal displacement segmentation network model to obtain a trained infinitesimal displacement segmentation network model; inputting a continuous to-be-predicted rotor vibration image pair into the trained infinitesimal displacement segmentation network model for prediction, and obtaining a semantic segmentation mask of the image; and according to the semantic segmentation mask, using a fusion semantic segmentation guide matching and double-view triangulation method to extract a rotor vibration three-dimensional coordinate. According to the invention, the detection precision of tiny vibration displacement is high.

The application discloses a sealing assembly and a gas turbine, which comprises a front baffle, a high-pressure finger ring, a low-pressure finger ring and a rear baffle connected in sequence from a high-pressure side to a low-pressure side, wherein the low-pressure finger ring is provided with an axial shoe arranged along an inner ring circumference of the low-pressure finger ring, the axial shoe extends in a direction away from the high-pressure finger ring on the low-pressure finger ring shaft, the axial shoe has a sealing surface facing a central axis of the low-pressure finger ring, and the sealing surface is provided with an abradable seal coating. The sealing assembly of the application, wherein the axial shoe on the low-pressure finger ring and the abradable seal coating on the sealing surface thereof can form self-adaptive contact with a rotor surface, thus ensuring the sealing effect and avoiding scratching the rotor; meanwhile, the finger seal structure can realize high-efficiency sealing in a small axial space, thereby shortening the length of the gas turbine rotor, improving the rotor vibration problem, and significantly improving the sealing reliability and the overall operation efficiency of the gas turbine.

This invention discloses a pulse-based vibration reduction control method for the demagnetized rotor of a permanent magnet direct-drive wind turbine, comprising the following steps: based on rotor dynamics theory, the unbalanced magnetic pull generated by the demagnetization of the permanent magnet direct-drive wind turbine is decomposed into terms related to the eccentricity state of the rotor system and fault disturbance terms, thus constructing the dynamic equations of the permanent magnet direct-drive wind turbine rotor system; a pulse control scheme is designed; the terms related to the eccentricity state of the rotor system are linearized using the Lipschitz condition, and the fault disturbance terms are analyzed and processed by constructing peak-to-peak gain; sufficient conditions for the pulse control scheme are derived based on Lyapunov stability theory; and the effectiveness of the designed pulse control scheme is verified through numerical simulation. This invention realizes the analysis and processing of the unbalanced magnetic pull generated by the demagnetization of a permanent magnet direct-drive wind turbine, providing a foundation for the design of a demagnetization vibration controller for permanent magnet direct-drive wind turbines.

This invention discloses a vibration-absorbing and energy-dissipating device for a rotor system support structure, used to reduce rotor vibration response. The device consists of a metal-rubber assembly and a fixed base assembly, with the metal-rubber assembly installed within the fixed base assembly. The metal-rubber assembly includes a metal-rubber element, a mass block, bolts, and nuts; the metal-rubber element is made of shape memory alloy wire. The fixed base assembly includes a supporting outer ring, an end cap, a supporting inner ring, and a limiting ring. This invention combines the advantages of both a vibration absorber and a damper, possessing efficient and stable vibration reduction performance, and can be used in vibration reduction design for rotor systems under various operating conditions. As a vibration absorber, the metal-rubber element provides stiffness, and the mass block is the vibrating mass; by adjusting the stiffness of the metal-rubber element, efficient absorption of rotor vibration energy is achieved. As a damper, the helical wires inside the metal-rubber element undergo relative motion during vibration, generating frictional energy dissipation, thus achieving efficient dissipation of rotor vibration energy.

A rotor (102) operable to rotate about a rotational axis includes a first bearing (110) coupled to the rotor, and a second bearing (112) coupled to the rotor, the first bearing and the second bearing cooperating to support the rotor for rotation about the rotational axis at a rotational speed. A rotor body includes a first bearing surface coupled to the first bearing, a second bearing surface coupled to the second bearing and an operational surface that cooperates with the first bearing surface and the second bearing surface to completely define an exposed surface of the rotor body. A vibration modifier (210) is coupled to the rotor body and operates to counteract vibration of the rotor to reduce vibration of the rotor body measured at the first bearing and the second bearing.

This invention provides a classification method for aero-engine rotor vibration data based on network structure search, relating to the field of aero-engine technology. The method first collects vibration data of aero-engine rotor systems under various operating conditions and converts it into grayscale images. Then, it uses a convolutional neural network (CNN) with empirically selected parameters and a CNN based on network structure search to perform multi-classification of the vibration data under all operating conditions, comparing the classification results. Next, it uses visualization dimensionality reduction technology to analyze the separability of the original vibration data. Then, it uses the aforementioned two CNNs to classify various types of vibration data with differences greater than a set threshold, comparing the classification results. Finally, based on the classified vibration data, it adds several types of vibration data with differences less than or equal to a set threshold from the original vibration data, classifying them using the aforementioned two CNNs, and comparing the classification results.

The invention relates to the technical field of mechanical detection, in particular to a motor performance and fault rapid detection device which comprises a placement platform, a power supply part is arranged at the bottom of the placement platform, an extension detection plate is arranged on one side of the placement platform, and a machine body clamping and fixing assembly is arranged on one side of the placement platform; the extension detection plate is fixedly connected with a rotor positioning rod, and the top end of the rotor positioning rod is rotatably connected with a rotor clamping assembly. A first photoelectric emission assembly is arranged on the rotor clamping assembly, a vertical baffle is arranged on one side of the extension detection plate, a photoelectric receiving assembly is arranged on the vertical baffle, and a data processor is integrated in the vertical baffle; the data processor is in signal connection with a second photoelectric emission assembly; according to the invention, the rotor position identification signal and the machine body position identification signal of the to-be-detected motor are obtained, the data processor solves the relative motion track of the rotor by taking the machine body position identification signal as a reference, pollution of the whole machine vibration of the to-be-detected motor to the rotor vibration signal is eliminated, and the fault characteristics of the rotor of the to-be-detected motor are accurately extracted.

The utility model relates to the technical field of steam turbine rotors, in particular to a composite damping device for vibration suppression of a steam turbine rotor, which comprises a composite damping plate, a buffer plate and a buffer cover. The top of the composite damping plate is fixedly connected with a damping spring, the end, away from the composite damping plate, of the damping spring is fixedly connected to the bottom of a buffer plate, the inner side wall of the buffer plate is fixedly connected with a buffer box, the buffer cover is slidably connected to the inner side wall of the buffer box, and the top of the buffer cover is fixedly connected with a connecting plate. Vibration is transmitted to the buffer box through the buffer cover, residual vibration is attenuated step by step through the buffer plate, the viscous damper and the composite damping plate, rotor vibration is effectively reduced through a multi-stage damping structure, the running stability of a steam turbine is improved, the step-by-step vibration absorption mode is achieved, the vibration suppression effect of the steam turbine rotor is improved, and the service life of the steam turbine rotor is prolonged. And the operation safety and reliability of the equipment are ensured.

The application discloses a rotor channel rotary positive displacement type liquid pressure energy recovery device, which comprises a sleeve with a cylindrical hollow cavity, a central shaft, a rotor, a flow guide end cover and a sealing end cover arranged in the sleeve, locking pieces are arranged at the length ends of the central shaft, the locking pieces limit the spacing between the two sealing end covers, so that a gap d is formed between the flow guide end cover and the rotor, and rotor channels are arranged on the rotor and take the specific spiral as a reference. Through the structural optimization, the application overcomes the high-precision machining limitation of the existing rotary energy recovery device, reduces the liquid leakage between the end face and the rotor, optimizes the rotor channel structure, improves the stability of the fluid flow in the rotor channel, reduces the rotor vibration, the fastener is a fastening nut, the adjustment of the gap between the rotor and the flow guide end cover can be realized, and the adaptability of different flow / pressure and higher energy recovery efficiency is improved.

The application provides a rotor lamination, a rotor, a motor and a compressor. The rotor lamination is formed with a through hole, and the width of the part of the through hole extending from a first end to a second end gradually decreases. The structure of the rotor is optimized. When the rotor operates, the second end of the through hole can absorb the energy of the vibration of the rotor lamination, reduce the noise generated by the vibration of the rotor, and the noise reduction effect is obvious. When viewed along the axial direction of the rotor lamination, the through hole is in a wedge-shaped structure and is arranged by using the acoustic black hole principle, so that the propagation speed of sound waves can be reduced, supersonic speed can be converted into subsonic waves, and waves in a wide frequency band can be gathered in a region with small width. When the rotor lamination is applied to the compressor, the effect of wide-frequency vibration is achieved, which is beneficial to attenuate the medium-high-frequency vibration, suppress the vibration response of the rotor, so that the vibration of the rotor during operation can be reduced, and then the working noise of the compressor can be reduced, and the comfort of use is improved. The resonance problem of the rotor and the pump body of the compressor is avoided, and the reliable operation of the motor and the pump body is ensured.

The utility model discloses a centrifugal machine capable of identifying the running state of a rotor through colors, which comprises a motor, the upper part of the motor is sleeved with a motor upper flange, the lower part of the motor is sleeved with a motor lower flange, one end of the motor penetrates through the motor upper flange and is connected with one end of a motor main shaft, and the other end of the motor main shaft is connected with the motor. The other end of the motor main shaft is sleeved with a rotor, the rotor is sleeved with a rotor frame, the end portion of the other end of the motor main shaft is connected with the upper portion of a centrifugal cavity, and the centrifugal cavity is fixedly connected with the bottom plate through a bolt supporting column. According to the utility model, the color identification sensor is arranged on the motor upper flange, the rotor identification color ring is arranged on the rotor frame, and the circuit board assembly controls the motor main shaft to rotate at a corresponding speed according to program setting so as to drive the rotor fixed on the motor main shaft to rotate, so that power-on, rotor installation, rotor identification and operation circulation of the whole equipment are completed; the working process cannot be changed due to vibration of the rotor, the recognition degree is more accurate, and the working efficiency of the centrifugal machine is improved.