Vibration mass calculation method, device and equipment of vertical motor system and medium

Abstract

The invention discloses a method, a device and equipment for calculating the vibration mass of a vertical motor system and a medium. The method for calculating the vibration mass of the vertical motor system comprises the following steps: acquiring a frequency response function of a bearing in the vertical motor system under the action of impact exciting force; determining an actually measured frequency response function corresponding to the preset frequency points according to the frequency response function and the at least three preset frequency points; determining a target frequency response function corresponding to the preset frequency point according to the frequency response function, the preset mass of the vertical motor system, a preset rigidity coefficient and a preset damping coefficient; determining a target parameter according to the actually measured frequency response function and the target frequency response function; the target parameters comprise a target rigidity coefficient and a target damping coefficient; and determining the vibration mass corresponding to the target frequency point according to the target parameter and the target frequency point. By adopting the technical means, the vibration mass corresponding to the target frequency point can be obtained, so that key parameters of the tuned mass damper can be designed on the basis.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical motors, and in particular to a method, device, equipment and medium for calculating the parametric mass of a vertical motor system. Background Art

[0002] The condensate pump (condensate pump) used to feed water to the deaerator in a power plant is arranged vertically, and the motor driving the condensate pump is located at the top of the condensate pump. This type of system has the characteristics of a slender shaft and a top-heavy structure. The vibration at the top of the motor is relatively prominent, which seriously affects the safe, stable and reliable operation of the motor.

[0003] There are many factors that cause motor vibration, such as imbalance, misalignment of magnetic center, tilt of thrust plate, broken cage bar, uneven air gap and short circuit, among which imbalance fault is the most common, accounting for more than 80% of all faults. Dynamic balancing test can reduce motor vibration, but there is often a contradiction between vibration at different speeds. In order to reduce the vibration fault caused by this, a vibration absorber can be installed above the motor to offset the vibration of the motor caused by the excitation force such as imbalance on the rotating shaft. Therefore, it is of great significance to study the advanced vibration reduction method and high-efficiency vibration reduction device of the vertical condensate pump motor.

[0004] For this type of vertical motor, a tuned mass damper based on the principle of dynamic vibration absorption is an effective vibration reduction technology. When designing a tuned mass damper, it is necessary to know the parametric mass of the system in the shaft system composed of the condenser pump-motor, and then design the key parameters of the tuned mass damper on this basis, such as mass, stiffness coefficient and damping coefficient. However, due to the influence of various factors such as the rotating shaft, additional pipelines and fixed constraints, it is difficult to directly and relatively accurately calculate the parametric mass of the condenser pump-motor system, resulting in the designed vibration damper not being in the best state and the vibration reduction effect being limited. Summary of the invention

[0005] The embodiments of the present invention provide a method, device, equipment and medium for calculating the parametric mass of a vertical motor system to achieve the parametric mass corresponding to different target frequency points, which is conducive to designing the key parameters of a tuned mass damper on this basis.

[0006] In a first aspect, an embodiment of the present invention provides a method for calculating the parametric mass of a vertical motor system, comprising:

[0007] Obtain the frequency response function of the bearing in the vertical motor system under the impact excitation force;

[0008] Determine a measured frequency response function corresponding to the preset frequency point according to the frequency response function and at least three preset frequency points;

[0009] Determining a target frequency response function corresponding to the preset frequency point according to the frequency response function, a preset mass, a preset stiffness coefficient, and a preset damping coefficient of the vertical motor system;

[0010] Determining target parameters according to the measured frequency response function and the target frequency response function; wherein the target parameters include a target stiffness coefficient and a target damping coefficient;

[0011] The vibration parameter mass corresponding to the target frequency point is determined according to the target parameter and the target frequency point.

[0012] In a second aspect, an embodiment of the present invention further provides a vibration-parametric mass calculation device for a vertical motor system, comprising:

[0013] A frequency response function acquisition module is used to obtain the frequency response function of the bearing in the vertical motor system under the impact excitation force;

[0014] A measured frequency response function determination module, used to determine a measured frequency response function corresponding to the preset frequency point according to the frequency response function and at least three preset frequency points;

[0015] a target frequency response function determination module, configured to determine a target frequency response function corresponding to the preset frequency point according to the frequency response function, a preset mass, a preset stiffness coefficient, and a preset damping coefficient of the vertical motor system;

[0016] A target parameter acquisition module, used to determine target parameters according to the measured frequency response function and the target frequency response function; wherein the target parameters include a target stiffness coefficient and a target damping coefficient;

[0017] The vibration parameter quality determination module is used to determine the vibration parameter quality corresponding to the target frequency point according to the target parameter and the target frequency point.

[0018] In a third aspect, an embodiment of the present invention further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in the first aspect when executing the program.

[0019] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect.

[0020] The technical solution of the embodiment of the present invention obtains the frequency response function of the bearing in the vertical motor system under the impact excitation force, and then determines the measured frequency response function corresponding to each preset frequency point according to the frequency response function and at least three preset frequency points, and determines the target frequency response function corresponding to the preset frequency point according to the frequency response function, the preset mass of the vertical motor system, the preset stiffness coefficient and the preset damping coefficient, determines the target stiffness coefficient and the target damping coefficient by the measured frequency response function and the target frequency response function, and then determines the parametric mass corresponding to the target frequency point according to the target parameters and the target frequency point, that is, the parametric mass corresponding to the target frequency point can be obtained, so as to design the key parameters of the tuned mass damper on this basis. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic flow chart of a first method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention;

[0022] Figure 2 A schematic structural diagram of a vertical motor system provided by an embodiment of the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of the structure of the equivalent mass-spring-damper system;

[0024] Figure 4 A schematic flow chart of a second method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention;

[0025] Figure 5 A schematic flow chart of a third method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of a frequency response function curve of a vertical motor system provided by an embodiment of the present invention;

[0027] Figure 7 A schematic flow chart of a fourth method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention;

[0028] Figure 8 A schematic diagram of the structure of a vibration-parametric mass calculation device for a vertical motor system provided by an embodiment of the present invention;

[0029] Fig. 9 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] It should be noted that the terms "including" and "etc." in the specification and claims of the present invention and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatus.

[0032] Before describing in detail the technical solution of the embodiment of the present invention, a method for calculating the parametric mass of a vertical motor system in the prior art is first described.

[0033] In the prior art, the added mass method is mainly used to calculate the parametric mass of the vertical motor system. First, the natural frequency of the motor in the original installation state is tested, which is recorded as ω1. Then, a mass Δm is added above or on the side of the motor to test the natural frequency of the motor in the state of additional mass installation, which is recorded as ω2. Assuming that the system stiffness remains unchanged, the calculation formula of the natural frequency in vibration theory can be obtained:

[0034]

[0035] Among them, k is the stiffness coefficient and m is the system parametric mass.

[0036] After deduction, we can get:

[0037]

[0038] It can be known from vibration theory that the above formula is valid at the natural frequency point; at other non-natural frequency points, the above natural frequency calculation formula is not valid. Therefore, this method is only applicable to the calculation of the system parametric mass when designing the vibration absorber at the natural frequency point, and is not applicable to the calculation of the system parametric mass at any other specified frequency point. However, the frequency point when designing the system vibration reduction is not necessarily the natural frequency point, and the above method cannot meet the vibration reduction design requirements in this case. In addition, the above formula does not consider the influence of damping when calculating, and regards the vertical motor system as an undamped system, which deviates from the actual situation. The additional mass has a greater impact on the calculation results of the parametric mass. When the additional mass is smaller than the mass of the vertical motor system, the impact on the natural frequency is smaller, and the error of the calculated parametric mass is larger. For heavy equipment such as the vertical motor system, the rotor system, bearing seat, support system and stator system are very heavy, which requires the additional mass to be very heavy during the test. During the field test, due to the limitations of factors such as structure and space, the additional mass cannot be very heavy, which affects the accuracy of the method.

[0039] Next, the technical solution of the embodiment of the present invention is described in detail.

[0040] Figure 1 A schematic flow chart of a first method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention is shown in FIG. Figure 1 As shown, the method for calculating the parametric mass of the vertical motor system includes:

[0041] S101. Obtain a frequency response function of a bearing in a vertical motor system under an impact excitation force.

[0042] Figure 2 A schematic diagram of the structure of a vertical motor system provided by an embodiment of the present invention, Figure 3 for Figure 2 The structural diagram of the equivalent mass-spring-damper system is as follows: Figure 1 and Figure 2 As shown, the parametric mass of the vertical motor system is m, the stiffness coefficient is k, and the damping coefficient is c. By arranging a vibration sensor at the bearing position at the upper end of the vertical motor, the vibration of the bearing position at the upper end of the motor can be tested.

[0043] Specifically, an impact excitation force f(t) is applied to the bearing in the vertical motor system in the horizontal direction, so that the system will vibrate. The vibration response of the bearing in this direction under the impact excitation force is obtained by testing, which is recorded as x(t). According to the dynamic equation of the vertical motor:

[0044]

[0045] The frequency response function H(ω) between the impact excitation force and the vibration response can be calculated, that is, let x(t) = X(ω)e iωt ,f(t)=F(ω)e iωt , where X(ω) and F(ω) are the amplitudes of vibration displacement and impact excitation force, respectively, and ω is the excitation frequency.

[0046] in,

[0047] S102: Determine a measured frequency response function corresponding to a preset frequency point according to the frequency response function and at least three preset frequency points.

[0048] Specifically, the at least three preset frequency points may be frequency points in the frequency response function curve, and illustratively, the at least three preset frequency points may be ω1, ω2, and ω3. Substituting the at least three preset frequency points into the frequency response function, H(ω1) corresponding to ω1, H(ω2) corresponding to ω2, and H(ω3) corresponding to ω3 may be obtained.

[0049] It can be understood that, as can be seen from the frequency response function formula, m, k and c in the frequency response function are unknowns, so at least three preset frequency points are required to obtain the measured frequency response function corresponding to the preset frequency points.

[0050] S103, determining a target frequency response function corresponding to a preset frequency point according to the frequency response function, a preset mass, a preset stiffness coefficient, and a preset damping coefficient of the vertical motor system.

[0051] Specifically, the preset mass, preset stiffness coefficient and preset damping coefficient of the vertical motor system can be set arbitrarily. Substituting the preset mass, preset stiffness coefficient and preset damping coefficient of the vertical motor system into the frequency response function, H1(ω1) corresponding to ω1, H2(ω2) corresponding to ω2 and H3(ω3) corresponding to ω3 can be obtained.

[0052] S104: Determine target parameters according to the measured frequency response function and the target frequency response function.

[0053] Specifically, the target parameters include a target stiffness coefficient and a target damping coefficient.

[0054] Specifically, the target stiffness coefficient and the target damping coefficient are determined according to the error between the measured frequency response function and the target frequency response function. When the error between the two is small, the corresponding preset stiffness coefficient at this time can be determined as the target stiffness coefficient, and the preset damping coefficient can be determined as the target damping coefficient. In addition, the parametric mass corresponding to the preset frequency point can also be determined.

[0055] S105. Determine the vibration parameter mass corresponding to the target frequency point according to the target parameter and the target frequency point.

[0056] Specifically, since the target stiffness coefficient, target damping coefficient and target frequency point are known, the target stiffness coefficient, target damping coefficient and target frequency point are substituted into the frequency response function to obtain the parametric mass corresponding to the target frequency point. In other words, by selecting different target frequencies, the parametric mass corresponding to the target frequency can be obtained.

[0057] The method for calculating the parametric mass of a vertical motor system provided by an embodiment of the present invention obtains the frequency response function of a bearing in the vertical motor system under the action of an impact excitation force, and then determines the measured frequency response function corresponding to each preset frequency point according to the frequency response function and at least three preset frequency points, and determines the target frequency response function corresponding to the preset frequency point according to the frequency response function, the preset mass of the vertical motor system, the preset stiffness coefficient, and the preset damping coefficient, determines the target parameters through the measured frequency response function and the target frequency response function, and then determines the parametric mass corresponding to the target frequency point according to the target stiffness coefficient, the target damping coefficient, and the target frequency point, that is, the parametric mass corresponding to the target frequency point can be obtained, so as to design the key parameters of the tuned mass damper on this basis.

[0058] Optional, Figure 4 A schematic flow chart of a second method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention, Figure 4 Based on the above embodiments, the operation of obtaining the frequency response function of the bearing in the vertical motor system under the impact excitation force is described in detail. Figure 4 As shown, the method for calculating the parametric mass of the vertical motor system includes:

[0059] S201. Obtain the vibration response of a bearing in a vertical motor system under an impact excitation force.

[0060] Specifically, an impact excitation force f(t) is applied to the bearings in the vertical motor system in the horizontal direction, so that the system will vibrate, and the vibration response of the bearings in this direction under the impact excitation force is obtained by testing.

[0061] S202. Determine a frequency response function between the impact excitation force and the vibration response according to the vibration response.

[0062] According to the dynamic equation of the vertical motor, the frequency response function between the impact excitation force and the vibration response can be calculated. In this way, it can be determined that the frequency response function is related to the parametric mass, stiffness coefficient and damping coefficient, that is, the vertical motor system can be equivalent to a mass-spring-damper system.

[0063] S203: Determine a measured frequency response function corresponding to the preset frequency point according to the frequency response function and at least three preset frequency points.

[0064] S204: Determine a target frequency response function corresponding to a preset frequency point according to the frequency response function, a preset mass, a preset stiffness coefficient, and a preset damping coefficient of the vertical motor system.

[0065] S205. Determine target parameters according to the measured frequency response function and the target frequency response function.

[0066] S206: Determine the vibration parameter mass corresponding to the target frequency point according to the target parameter and the target frequency point.

[0067] The method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention can test the vibration response of the bearing in the direction under the impact excitation force by applying an impact excitation force to the bearing in the vertical motor system in the horizontal direction. According to the dynamic equation of the vertical motor, the frequency response function between the impact excitation force and the vibration response can be calculated, so that it can be determined that the frequency response function is related to the parametric mass, the stiffness coefficient and the damping coefficient, that is, the vertical motor system can be equivalent to a mass-spring-damper system, so that the parametric mass corresponding to different frequency points can be determined according to the frequency response function.

[0068] Optional, Figure 5 A schematic flow chart of a third method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention, Figure 5 Based on the above embodiments, the operation of obtaining the vibration response of the bearing in the vertical motor system under the impact excitation force and determining the frequency response function between the impact excitation force and the vibration response according to the vibration response is described in detail. Figure 5 As shown, the method for calculating the parametric mass of the vertical motor system includes:

[0069] S301, applying an impact excitation force to a bearing in a vertical motor system along a first direction.

[0070] The first direction intersects with the setting direction of the vertical motor system, that is, the first direction is a horizontal direction.

[0071] S302. Obtain the vibration response of the bearing under the impact excitation force.

[0072] Specifically, under the action of the impact excitation force, the vibration response of the bearing in the horizontal direction is recorded as x(t).

[0073] S303: Determine the vibration displacement according to the vibration response.

[0074] Specifically, let x(t) = X(ω)e iωt , X(ω) is the vibration displacement.

[0075] S304: Determine the amplitude of the impact excitation force.

[0076] Specifically, let f(t) = F(ω)e iωt , F(ω) is the amplitude of the impact excitation force.

[0077] S305, determining a frequency response function according to the vibration displacement, amplitude and the dynamic equation of the vertical motor system.

[0078] Specifically, the dynamic equation of the vertical motor is: From this we can determine

[0079] S306: Acquire at least three preset frequency points within a preset frequency range.

[0080] Specifically, Figure 6 A frequency response function curve diagram of a vertical motor system provided by an embodiment of the present invention is shown in FIG. Figure 6 As shown, the preset frequency range may be a part of the frequency response function curve. Since the parametric masses corresponding to different frequency points are different, a smaller area may be selected in the frequency response function curve as the preset frequency range. Exemplarily, the preset frequency range may only account for 30% of the frequency response function curve, and the parametric masses corresponding to different frequency points within the range are the same.

[0081] S307: Determine a measured frequency response function corresponding to the preset frequency point according to the frequency response function and at least three preset frequency points.

[0082] S308: Determine a target frequency response function corresponding to a preset frequency point according to the frequency response function, a preset mass, a preset stiffness coefficient, and a preset damping coefficient of the vertical motor system.

[0083] S309: Determine target parameters according to the measured frequency response function and the target frequency response function.

[0084] S310: Determine the vibration parameter mass corresponding to the target frequency point according to the target parameter and the target frequency point.

[0085] The method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention can obtain the vibration response of the bearing under the impact excitation force by applying an impact excitation force to the bearing in the vertical motor system along a first direction, and determine the frequency response function according to the vibration displacement, amplitude and the dynamic equation of the vertical motor system, so as to subsequently obtain the parametric mass corresponding to different frequency points.

[0086] Optional, Figure 7 A schematic flow chart of a fourth method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention, Figure 7 Based on the above embodiment, the operation of determining the target stiffness coefficient and the target damping coefficient according to the measured frequency response function and the target frequency response function is described in detail. Figure 7 As shown, the method for calculating the parametric mass of the vertical motor system includes:

[0087] S401. Obtain a frequency response function of a bearing in a vertical motor system under an impact excitation force.

[0088] S402: Determine a measured frequency response function corresponding to a preset frequency point according to the frequency response function and at least three preset frequency points.

[0089] S403: Determine a target frequency response function corresponding to a preset frequency point according to the frequency response function, a preset mass, a preset stiffness coefficient, and a preset damping coefficient of the vertical motor system.

[0090] S404: Determine a real-time error between the measured frequency response function and the target frequency response function.

[0091] Specifically, the real-time error E can be expressed as:

[0092]

[0093] Among them, ω[H(ω i )] is ω i The real part of the corresponding measured frequency response function, α[H i (ω i )] is ω i The real part of the corresponding target frequency response function. β[H(ω i )] is ω i The corresponding imaginary part of the measured frequency response function, β[H i (ω i )] is ω i The imaginary part of the corresponding target frequency response function. N represents the number of preset frequency points.

[0094] S405: Determine the error variation between two adjacent iterations using a nonlinear iteration method according to the real-time error.

[0095] Specifically, the error change between two adjacent iterations is used as the convergence criterion:

[0096]

[0097] Wherein, K is the Kth iteration.

[0098] S406: Determine target parameters according to the error variation and a preset error range.

[0099] Specifically, the preset error range may be less than 1%, so as to determine the target damping coefficient and the target stiffness coefficient.

[0100] S407: Determine the vibration parameter mass corresponding to the target frequency point according to the target parameter and the target frequency point.

[0101] The method for calculating the parametric mass of a vertical motor system provided in an embodiment of the present invention determines the error change between two adjacent iterations through a nonlinear iterative method, and determines the target parameters when the error change is less than a preset error range. The target parameters obtained in this way have high accuracy, so that the parametric mass corresponding to the target frequency point can be determined subsequently based on the target parameters and the target frequency point, and the parametric mass has high accuracy.

[0102] Figure 8 A structural diagram of a vibration-parametric mass calculation device for a vertical motor system provided by an embodiment of the present invention is shown in FIG. Figure 8 As shown, the vibration mass calculation device of the vertical motor system includes:

[0103] A frequency response function acquisition module 100 is used to acquire the frequency response function of a bearing in a vertical motor system under the action of an impact excitation force;

[0104] A measured frequency response function determination module 200, configured to determine a measured frequency response function corresponding to a preset frequency point according to the frequency response function and at least three preset frequency points;

[0105] The target frequency response function determination module 300 is used to determine the target frequency response function corresponding to the preset frequency point according to the frequency response function, the preset mass, the preset stiffness coefficient and the preset damping coefficient of the vertical motor system;

[0106] The target parameter acquisition module 400 is used to determine the target parameters according to the measured frequency response function and the target frequency response function; wherein the target parameters include a target stiffness coefficient and a target damping coefficient.

[0107] The vibration parameter quality determination module 500 is used to determine the vibration parameter quality corresponding to the target frequency point according to the target parameter and the target frequency point.

[0108] The parametric mass calculation device for a vertical motor system provided by an embodiment of the present invention obtains the frequency response function of a bearing in the vertical motor system under the action of an impact excitation force through a frequency response function acquisition module; determines the measured frequency response function corresponding to the preset frequency point according to the frequency response function and at least three preset frequency points through a measured frequency response function determination module; determines the target frequency response function corresponding to the preset frequency point through a target frequency response function determination module according to the frequency response function, the preset mass of the vertical motor system, the preset stiffness coefficient and the preset damping coefficient; determines the target parameter according to the measured frequency response function and the target frequency response function through a target parameter acquisition module; determines the parametric mass corresponding to the target frequency point according to the target parameter and the target frequency point through a parametric mass determination module, so that the parametric mass corresponding to different frequency points can be obtained, and the precision of the parametric mass is high, so that the key parameters of the tuned mass damper can be designed on this basis.

[0109] Optionally, the frequency response function acquisition module includes a vibration response acquisition unit and a frequency response function determination unit.

[0110] The vibration response acquisition unit is used to acquire the vibration response of the bearing in the vertical motor system under the impact excitation force.

[0111] The frequency response function determination unit is used to determine the frequency response function between the impact excitation force and the vibration response according to the vibration response.

[0112] Optionally, the vibration response acquisition unit further includes an impact excitation force applying subunit and a vibration response acquisition subunit.

[0113] The impact excitation force applying subunit is used to apply an impact excitation force to the bearing in the vertical motor system along a first direction; the first direction intersects with the setting direction of the vertical motor system.

[0114] The vibration response acquisition subunit is used to acquire the vibration response of the bearing under the impact excitation force.

[0115] Optionally, the frequency response function determination unit further includes a vibration displacement determination subunit, an amplitude determination subunit and a frequency response function determination subunit.

[0116] The vibration displacement determination subunit is used to determine the vibration displacement according to the vibration response.

[0117] The amplitude determination subunit is used to determine the amplitude of the impact excitation force.

[0118] The frequency response function determination subunit is used to determine the frequency response function according to the vibration displacement, amplitude and the dynamic equation of the vertical motor system.

[0119] Optionally, the vibration-parameter mass calculation device of the vertical motor system further includes a preset frequency point acquisition module.

[0120] The preset frequency point acquisition module is used to acquire at least three preset frequency points within a preset frequency range.

[0121] Optionally, the target parameter determination module includes a real-time error determination unit and a target parameter determination unit.

[0122] The real-time error determination unit is used to determine the real-time error between the measured frequency response function and the target frequency response function.

[0123] The target parameter determination unit is used to determine the target parameter according to the real-time error and the preset error range.

[0124] Optionally, the target parameter determination unit also includes an error variation determination subunit and a target parameter determination subunit.

[0125] The error variation determination subunit determines the error variation between two adjacent iterations using a nonlinear iteration method according to the real-time error.

[0126] The target parameter determination subunit determines the target parameter according to the error variation and the preset error range.

[0127] Fig. 9 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention is shown in FIG. Fig. 9 As shown, the electronic device 10 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0128] like Fig. 9As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0129] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0130] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the parametric mass calculation method of the vertical motor system.

[0131] In some embodiments, the method for calculating the parametric mass of a vertical motor system may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for calculating the parametric mass of the vertical motor system described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the method for calculating the parametric mass of the vertical motor system in any other appropriate manner (e.g., by means of firmware).

[0132] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0133] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0134] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0135] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0136] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0137] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0138] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0139] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for calculating the parametric mass of a vertical motor system, characterized in that: include: Obtain the frequency response function of the bearing in the vertical motor system under the impact excitation force; Determine a measured frequency response function corresponding to the preset frequency point according to the frequency response function and at least three preset frequency points; Determining a target frequency response function corresponding to the preset frequency point according to the frequency response function, a preset mass, a preset stiffness coefficient, and a preset damping coefficient of the vertical motor system; Determining target parameters according to the measured frequency response function and the target frequency response function; wherein the target parameters include a target stiffness coefficient and a target damping coefficient; The vibration parameter mass corresponding to the target frequency point is determined according to the target parameter and the target frequency point.

2. The method according to claim 1, characterized in that Obtain the frequency response function of the bearing in the vertical motor system under the impact excitation force, including: Obtaining a vibration response of a bearing in a vertical motor system under the impact excitation force; A frequency response function between the impact excitation force and the vibration response is determined according to the vibration response.

3. The method according to claim 2, characterized in that Obtaining the vibration response of a bearing in a vertical motor system under the impact excitation force, including: Applying an impact excitation force to a bearing in a vertical motor system along a first direction; the first direction intersects with a setting direction of the vertical motor system; The vibration response of the bearing under the impact excitation force is obtained.

4. The method according to claim 2, characterized in that: Determining a frequency response function between the impact excitation force and the vibration response according to the vibration response includes: determining a vibration displacement based on the vibration response; determining the magnitude of the impact excitation force; A frequency response function is determined according to the vibration displacement, the amplitude and a dynamic equation of the vertical motor system.

5. The method according to claim 1, characterized in that Before determining the measured frequency response function corresponding to the preset frequency point according to the frequency response function and at least three preset frequency points, the method further includes: At least three preset frequency points within a preset frequency range are obtained.

6. The method according to claim 1, characterized in that Determining a target parameter according to the measured frequency response function and the target frequency response function includes: Determining a real-time error between the measured frequency response function and the target frequency response function; The target parameter is determined according to the real-time error and the preset error range.

7. The method according to claim 6, characterized in that Determining a target parameter according to the real-time error and a preset error range includes: Determine the error variation between two adjacent iterations using a nonlinear iterative method according to the real-time error; The target parameter is determined according to the error variation and a preset error range.

8. A vibration mass calculation device for a vertical motor system, characterized in that: include: A frequency response function acquisition module is used to obtain the frequency response function of the bearing in the vertical motor system under the impact excitation force; A measured frequency response function determination module, used to determine a measured frequency response function corresponding to the preset frequency point according to the frequency response function and at least three preset frequency points; a target frequency response function determination module, configured to determine a target frequency response function corresponding to the preset frequency point according to the frequency response function, a preset mass, a preset stiffness coefficient, and a preset damping coefficient of the vertical motor system; A target parameter acquisition module, used to determine target parameters according to the measured frequency response function and the target frequency response function; wherein the target parameters include a target stiffness coefficient and a target damping coefficient; The vibration parameter quality determination module is used to determine the vibration parameter quality corresponding to the target frequency point according to the target parameter and the target frequency point.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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