A deformation compensation method, device, apparatus and storage medium

Abstract

This application discloses a deformation compensation method, apparatus, device, and storage medium. The method includes: when a plunger pump is delivering a target liquid, using a pressure sensor deployed at the outlet of a first pump head to collect real-time internal pressure data within the first pump head; using a controller to determine the deformation compensation value of the first pump head under the real-time internal pressure data based on a pre-deployed calibration model; and using the controller to dynamically compensate the real-time internal pressure data based on the deformation compensation value to determine the target internal pressure data. This technical solution improves the operating accuracy and service life of the plunger pump under high-pressure operating conditions.

Description

Technical Field

[0001] This application relates to the field of fluid transport equipment technology, specifically to a deformation compensation method, apparatus, device, and storage medium. Background Technology

[0002] In fields such as high-end liquid chromatography and precision medical infusion, traditional plunger pumps typically use metal pump heads such as stainless steel. Although they have good rigidity, they suffer from problems such as heavy weight and poor compatibility with some corrosive fluids.

[0003] Currently, polyetheretherketone (PEEK) is gradually becoming the preferred material for pump heads due to its excellent corrosion resistance and biocompatibility. However, the elastic modulus of PEEK is much lower than that of metals. Under high pressure (e.g., >20 MPa), the pump cavity wall will undergo significant elastic expansion and creep, resulting in a nonlinear reduction in the effective volume of the pump cavity, causing flow pulsation and metering errors, which are difficult to eliminate using traditional linear compensation methods. Summary of the Invention

[0004] This application provides a deformation compensation method, apparatus, equipment, and storage medium to achieve improved operating accuracy and service life of plunger pumps under high-pressure operating environments.

[0005] According to one aspect of this application, a deformation compensation method is provided, applied to a plunger pump, the plunger pump including a pump body and a first pump head at the front end of the pump body, a pressure sensor and a controller are deployed in the plunger pump, the controller having a built-in calibration model; the deformation compensation method includes: When the plunger pump delivers the target liquid, a pressure sensor deployed at the outlet of the first pump head is used to collect real-time internal pressure data in the first pump head. Using the controller, the deformation compensation value of the first pump head is determined based on the real-time pump pressure data according to a pre-deployed calibration model; wherein, the calibration model is determined based on the first pressure-volume curve corresponding to the first pump head and the second pressure-volume curve corresponding to the second pump head; the first pump head and the second pump head are made of different materials; Using the controller, the real-time pump pressure data is dynamically compensated based on the deformation compensation value to determine the target pump pressure data.

[0006] According to another aspect of this application, a deformation compensation device is provided for use in a plunger pump, the plunger pump including a pump body and a first pump head at the front end of the pump body, a pressure sensor and a controller are deployed in the plunger pump, the controller having a built-in calibration model; the deformation compensation device includes: The pressure acquisition module is used to acquire real-time internal pressure data of the first pump head by using a pressure sensor deployed at the outlet of the first pump head when the plunger pump is delivering the target liquid. The compensation value determination module is used to determine the deformation compensation value of the first pump head under the real-time pump pressure data using the controller and a pre-deployed correction model; wherein the correction model is determined based on the first pressure-volume curve corresponding to the first pump head and the second pressure-volume curve corresponding to the second pump head; the first pump head and the second pump head are made of different materials. The deformation correction module is used to dynamically compensate the real-time pump pressure data based on the deformation compensation value using the controller, and to determine the target pump pressure data.

[0007] According to another aspect of this application, an electronic device is provided, the electronic device comprising: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement any of the deformation compensation methods provided in the embodiments of this application.

[0008] According to another aspect of this application, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements any of the deformation compensation methods provided in the embodiments of this application.

[0009] According to another aspect of this application, a computer program product is provided, including a computer program that, when executed by a processor, implements any of the deformation compensation methods provided in the embodiments of this application.

[0010] This application uses a calibration model generated for the first pump head to determine the deformation compensation value corresponding to the collected real-time pump internal pressure data when the plunger pump delivers the target liquid. The real-time pump internal pressure data is then updated based on the deformation compensation value, effectively compensating for the deformation error of the material under high pressure, ensuring high accuracy of the output pressure, and improving the operating accuracy and service life of the plunger pump in high-pressure operating environments. Attached Figure Description

[0011] Figure 1a This is a schematic diagram of a plunger pump provided according to Embodiment 1 of this application.

[0012] Figure 1b This is a schematic cross-sectional view of a plunger pump provided according to Embodiment 1 of this application.

[0013] Figure 1c This is a flowchart of a deformation compensation method provided according to Embodiment 1 of this application.

[0014] Figure 2This is a flowchart of a deformation compensation method provided according to Embodiment 2 of this application.

[0015] Figure 3 This is a structural schematic diagram of a deformation compensation device provided according to Embodiment 3 of this application.

[0016] Figure 4 This is a schematic diagram of the structure of an electronic device that implements the deformation compensation method of Embodiment 4 of this application. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] Example 1 Figure 1a and Figure 1b A schematic diagram and a schematic cross-sectional view of a plunger pump provided in Embodiment 1 of the present invention are shown below. Figure 1a and Figure 1b As shown, the plunger pump includes pump head 1 and pump head 2 connected in series on the pump body for pressurizing and delivering fluid. A linear guide rail 4 is disposed within the pump body, a plunger rod 3 reciprocates along the linear guide rail 4, and a drive structure 5 for driving the plunger rod 3. A high-precision pressure sensor can also be deployed at the outlet of each pump head, and a controller can also be deployed in the plunger pump to receive pressure data collected by the pressure sensor. Optionally, the deployment position of the controller can be adapted according to those skilled in the art. It should be noted that pump head 1 and pump head 2 are made of polyetheretherketone (PEEK).

[0020] Optionally, a calibration model can be pre-built into the controller, which can be used to calibrate the pressure data acquired by the pressure sensor.

[0021] It should be noted that by optimizing the effective working length of the linear guide 4, the plunger rod stroke is 1-15mm, the rod diameter is 0.5-5mm, the stroke / diameter ratio is 0.5-5, and the frequency is 0.02-20Hz. By using a linear guide drive, the guide length is shortened by approximately 30% compared to conventional pumps of the same specifications (57 linear stepper motor). This results in a correspondingly shorter stroke for the plunger rod 3. With the motor speed of the drive structure remaining constant, the number of reciprocating strokes per unit time increases, thereby improving the plunger pump's discharge frequency and working efficiency.

[0022] The tail end of the plunger rod 3 is magnetically coupled to the drive slider in the drive structure 5. A permanent magnet can be installed on the drive slider in the drive structure, and a magnetically conductive material can be fixed to the tail end of the plunger rod. The contact surface between the plunger rod and the drive structure can be a flat surface or a matching concave-convex structure to enhance the connection stability. When the tail end of the plunger rod 3 approaches the drive slider, the contact surface between the plunger rod 3 and the drive slider is tightly fitted under the strong attraction of the permanent magnet, achieving a gapless rigid connection.

[0023] By using magnetic adsorption to achieve a gapless and contactless connection between the plunger rod and the drive component, mechanical wear, loosening and impact are avoided, improving the smoothness of movement and transmission rigidity, extending the service life of key moving parts, and the magnetic connection method does not require regular tightening, making disassembly convenient and reducing maintenance costs and complexity.

[0024] Figure 1c This is a flowchart of a deformation compensation method according to Embodiment 1 of this application. This embodiment is applicable to the deformation compensation of a plunger pump under high-pressure operating conditions. The compensation can be performed by a deformation compensation device, which can be implemented in hardware and / or software. This device can be configured in a device with data processing capabilities, such as a plunger pump with integrated data processing capabilities. Figure 1c As shown, the method includes: S110. When the plunger pump delivers the target liquid, a pressure sensor deployed at the outlet of the first pump head is used to collect real-time pump pressure data inside the first pump head.

[0025] Specifically, after the pressure sensor collects the pressure data inside the pump, it can transmit the pressure data to the controller.

[0026] S120. Using a controller, based on a pre-deployed calibration model, the deformation compensation value of the first pump head is determined under real-time pump pressure data.

[0027] The calibration model can be determined based on the first pressure-volume curve corresponding to the first pump head and the second pressure-volume curve corresponding to the second pump head. The calibration model can be used to determine the degree of volumetric deformation of the pump head due to deformation. It should be noted that the first and second pump heads are made of different materials, and the first and second pump heads are not two pump heads existing simultaneously in the same plunger pump. For example, the first pump head is made of polyetheretherketone (PEEK), and the second pump head is made of metal.

[0028] S130. A controller is used to dynamically compensate the real-time pump pressure data based on the deformation compensation value to determine the target pump pressure data.

[0029] Optionally, a controller is used to dynamically compensate the real-time pump pressure data based on the deformation compensation value to determine the target pump pressure data, including: updating the volume value corresponding to the real-time pump pressure data in the first pressure-volume curve according to the deformation compensation value to obtain the target volume value; and using the pressure value corresponding to the target volume value in the second pressure-volume curve as the target pump pressure data.

[0030] Specifically, after determining the deformation compensation value, candidate volume values ​​corresponding to the real-time pump pressure data in the first pressure-volume curve can be determined based on the first pressure-volume curve. Then, the candidate volume values ​​are updated based on the deformation compensation value to determine the target volume value. The pressure value corresponding to the target volume value in the second pressure-volume curve is determined based on the second pressure-volume curve, and this pressure value serves as the target pump pressure data. It should be noted that candidate volume values ​​can refer to volume values ​​without deformation compensation, target volume values ​​can refer to volume values ​​with deformation compensation, and target pump pressure data can refer to real-time pump pressure data with deformation compensation.

[0031] It should be noted that the first pressure-volume curves correspond to different target liquids, meaning that different target liquids can include different liquid types and different concentrations of the same type of target liquid. Different target liquid types will result in different corresponding second pressure-volume curves.

[0032] In this embodiment of the invention, when the plunger pump delivers the target liquid, the motor of the drive structure drives the drive slider on the linear guide rail to reciprocate through the transmission mechanism. This, in turn, drives the plunger rod to move synchronously through magnetic coupling, thereby compressing and delivering the fluid. Throughout the process, the calibration model continuously operates to ensure that the deformation of the first pump head does not affect the accuracy of the final output pressure under high-pressure operating conditions. It should be noted that the pressure data within the target pump can be used for final display, recording, or as a feedback signal to adjust the operating parameters of the drive motor in the drive structure in real time.

[0033] This embodiment of the application uses a calibration model generated for the first pump head to determine the deformation compensation value corresponding to the collected real-time pump internal pressure data when the plunger pump delivers the target liquid. The real-time pump internal pressure data is then updated based on the deformation compensation value, which effectively compensates for the deformation error of the material under high pressure, ensures high accuracy of the output pressure, and improves the operating accuracy and service life of the plunger pump in a high-pressure operating environment.

[0034] Example 2 Figure 2 This is a flowchart of a deformation compensation method according to Embodiment 2 of this application. Based on the technical solutions of the above embodiments, this embodiment further refines the "determination process of the correction model". It should be noted that for parts not described in detail in this embodiment, please refer to the relevant descriptions in other embodiments. Figure 2 As shown, the method includes: S210. Use a controller to perform curve analysis on the second pressure-volume curve and at least one first pressure-volume curve under the same operating conditions, and determine at least one volume difference value under each pressure condition.

[0035] The pressure-volume curves can be used to characterize the relationship between the discharge volume and the pump internal pressure. The first pressure-volume curve can be determined by controlling the drive structure to push the plunger rod at a preset moving speed, with a first pump head deployed at the front end of the pump body and the outlet of the first pump head closed. The second pressure-volume curve can be determined by controlling the drive structure to push the plunger rod at a preset moving speed, with a second pump head deployed at the front end of the pump body and the outlet of the second pump head closed. Optionally, the preset moving speed can be adaptively set according to those skilled in the art.

[0036] It should be noted that the first pressure-volume curve and the second pressure-volume curve for liquids of the same type are determined under the same operating conditions.

[0037] In this embodiment of the invention, a first pressure-volume curve corresponding to the target liquid under different concentration standards and a second pressure-volume curve corresponding to the target liquid can be determined. For at least one first pressure-volume curve and one second pressure-volume curve, at least one volume difference between the first pressure-volume curve and the second pressure-volume curve under each pressure condition can be determined.

[0038] S220. The controller uses the curve weight corresponding to each first pressure volume curve to perform a weighted summation of at least one volume difference under each pressure condition to determine the target volume difference under each pressure condition.

[0039] Optionally, different first pressure-volume curves can be used to characterize target liquids with different concentrations, and the pressure-volume curves are determined under the condition that the first pump head is deployed at the front end of the pump body and the first pump head is closed; different curve weights can be used to characterize the application frequency of target liquids with different concentrations.

[0040] Specifically, based on the curve weights corresponding to the first pressure-volume curve, the volume differences corresponding to different first pressure-volume curves under each pressure condition are weighted and summed to determine the target volume difference under each pressure condition.

[0041] S230. The controller is used to perform nonlinear fitting on the target volume difference under each pressure condition to determine the nonlinear relationship between the volume compensation value and the pressure condition, and this nonlinear relationship is used as the correction model.

[0042] In this embodiment of the invention, the fitting method for nonlinear fitting of the target volume difference under pressure conditions can be adaptively set according to those skilled in the art, for example, nonlinear fitting based on a multinomial regression method. It should be noted that after determining the calibration model, the calibration model can be deployed to the controller. Optionally, the calibration model can be a univariate quadratic function.

[0043] This application embodiment constructs a calibration model based on the operating data of the first pump head and the second pump head under high pressure conditions, ensuring the reliability and quality of the calibration model.

[0044] Example 3 Figure 3 This is a structural schematic diagram of a deformation compensation device according to Embodiment 3 of this application. It is applicable to situations where deformation compensation occurs in a plunger pump under high-pressure operating conditions. This deformation compensation device can be implemented in hardware and / or software, and can be configured in a device with data processing capabilities, such as a plunger pump with integrated data processing capabilities. Figure 3 As shown, the device includes: The pressure acquisition module 310 is used to acquire real-time pump pressure data in the first pump head by means of a pressure sensor deployed at the outlet of the first pump head when the plunger pump is delivering the target liquid. The compensation value determination module 320 is used to determine the deformation compensation value of the first pump head under the real-time pump pressure data using the controller and a pre-deployed correction model; wherein the correction model is determined based on the first pressure-volume curve corresponding to the first pump head and the second pressure-volume curve corresponding to the second pump head; the first pump head and the second pump head are made of different materials. The deformation correction module 330 is used to dynamically compensate the real-time pump pressure data based on the deformation compensation value using the controller, and to determine the target pump pressure data.

[0045] This embodiment of the application uses a calibration model generated for the first pump head to determine the deformation compensation value corresponding to the collected real-time pump internal pressure data when the plunger pump delivers the target liquid. The real-time pump internal pressure data is then updated based on the deformation compensation value, which effectively compensates for the deformation error of the material under high pressure, ensures high accuracy of the output pressure, and improves the operating accuracy and service life of the plunger pump in a high-pressure operating environment.

[0046] Optionally, the device may also include a calibration model determination module.

[0047] The correction model determination module includes: The volume difference determination unit is used to perform curve analysis on a second pressure-volume curve and at least one first pressure-volume curve under the same operating condition using the controller, and to determine at least one volume difference value under each pressure condition; wherein, the pressure-volume curve is used to characterize the correspondence between the discharge volume and the pump internal pressure, the first pressure-volume curve is determined by controlling the drive structure to push the plunger rod at a preset moving speed under the condition that a first pump head is deployed at the front end of the pump body and the outlet of the first pump head is closed; the second pressure-volume curve is determined by controlling the drive structure to push the plunger rod at a preset moving speed under the condition that a second pump head is deployed at the front end of the pump body and the outlet of the second pump head is closed. The target volume difference determination unit is used to use the controller to perform a weighted summation of at least one volume difference under each pressure condition according to the curve weight corresponding to each first pressure volume curve, and to determine the target volume difference under each pressure condition. The calibration model determination unit is used to perform nonlinear fitting on the target volume difference under each pressure condition using the controller, determine the nonlinear relationship between the volume compensation value and the pressure condition, and use the nonlinear relationship as the calibration model.

[0048] Optionally, different first pressure-volume curves are used to characterize target liquids with different concentrations, and the pressure-volume curves are determined under the condition that the first pump head is deployed at the front end of the pump body and the first pump head is closed; different curve weights are used to characterize the application frequency of target liquids with different concentrations.

[0049] Optionally, the deformation correction module 330 includes: The volume update unit is used to update the volume value in the first pressure-volume curve corresponding to the real-time pump pressure data according to the deformation compensation value, so as to obtain the target volume value. The pressure determination unit is used to determine the pressure value corresponding to the target volume value in the second pressure-volume curve as the target pump internal pressure data based on the second pressure-volume curve.

[0050] Optionally, the drive structure for driving the plunger rod in the plunger pump is magnetically coupled to the tail end of the plunger rod that reciprocates along the linear guide rail.

[0051] Optionally, the drive structure is provided with a permanent magnet, the tail end of the plunger rod is fixed with a magnetic material, and the contact surface between the plunger rod and the drive structure is a plane or a matching concave-convex structure.

[0052] The deformation compensation device provided in this application embodiment can execute the deformation compensation method provided in any embodiment of this application, and has the corresponding functional modules and beneficial effects for executing each deformation compensation method.

[0053] According to embodiments of this application, this application also provides an electronic device, a readable storage medium, and a computer program product.

[0054] Example 4 Figure 4 This is a schematic diagram of the structure of an electronic device 410 implementing the deformation compensation method of the embodiments of this application. The electronic device 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 processors, cellular phones, smartphones, 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 application described and / or claimed herein.

[0055] like Figure 4 As shown, the electronic device 410 includes at least one processor 411 and a memory, such as a read-only memory 412 or a random access memory 413, communicatively connected to the at least one processor 411. The memory stores computer programs executable by the at least one processor. The processor 411 can perform various appropriate actions and processes based on the computer program stored in the read-only memory 412 or loaded from storage unit 418 into the random access memory 413. The random access memory 413 can also store various programs and data required for the operation of the electronic device 410. The processor 411, read-only memory 412, and random access memory 413 are interconnected via a bus 414. An input / output interface 415 is also connected to the bus 414.

[0056] Multiple components in electronic device 410 are connected to input / output interface 415, including: input unit 416, such as keyboard, mouse, etc.; output unit 417, such as various types of monitors, speakers, etc.; storage unit 418, such as disk, optical disk, etc.; and communication unit 419, such as network card, modem, wireless transceiver, etc. Communication unit 419 allows electronic device 410 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0057] Processor 411 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 411 include, but are not limited to, central processing units, graphics processing units, various special-purpose artificial intelligence computing chips, various processors running machine learning model algorithms, digital signal processors, and any suitable processor, controller, microcontroller, etc. Processor 411 performs the various methods and processes described above, such as deformation compensation methods.

[0058] In some embodiments, the deformation compensation method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 418. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 410 via read-only memory 412 and / or communication unit 419. When the computer program is loaded into random access memory 413 and executed by processor 411, one or more steps of the deformation compensation method described above may be performed. Alternatively, in other embodiments, processor 411 may be configured as the deformation compensation method by any other suitable means (e.g., by means of firmware).

[0059] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays, application-specific integrated circuits (ASICs), application-specific standard products (ASICs), systems-on-a-chip (SoCs), payload programmable logic devices, computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0060] Computer programs used to implement the methods of this application may be written in any combination of one or more programming languages. These computer programs may be provided to the processor of a general-purpose computer, a special-purpose computer, or other programmable deformation compensation device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0061] In the context of this application, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory, read-only memory, erasable programmable read-only memory, optical fibers, portable compact disk read-only memory, optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0062] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a cathode ray tube or liquid crystal display monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0063] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0064] A computing system can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product within the cloud computing service system to address the shortcomings of traditional physical hosts and virtual private servers, such as high management difficulty and weak business scalability.

[0065] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0066] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A deformation compensation method, characterized in that, Applied to a plunger pump, the plunger pump includes a pump body and a first pump head at the front end of the pump body, and a pressure sensor and a controller are deployed in the plunger pump, the controller having a built-in calibration model; the deformation compensation method includes: When the plunger pump delivers the target liquid, a pressure sensor deployed at the outlet of the first pump head is used to collect real-time internal pressure data in the first pump head. Using the controller, the deformation compensation value of the first pump head is determined based on the real-time pump pressure data according to a pre-deployed calibration model; wherein, the calibration model is determined based on the first pressure-volume curve corresponding to the first pump head and the second pressure-volume curve corresponding to the second pump head; the first pump head and the second pump head are made of different materials; Using the controller, the real-time pump pressure data is dynamically compensated based on the deformation compensation value to determine the target pump pressure data.

2. The method according to claim 1, characterized in that, The plunger pump also includes a plunger rod that reciprocates along a linear guide rail and a drive structure for driving the plunger rod; the process of determining the calibration model includes: The controller is used to perform curve analysis on a second pressure-volume curve and at least one first pressure-volume curve under the same operating condition to determine at least one volume difference value under each pressure condition. The pressure-volume curve characterizes the relationship between the discharge volume and the pump internal pressure. The first pressure-volume curve is determined by controlling the drive structure to push the plunger rod at a preset moving speed under the condition that a first pump head is deployed at the front end of the pump body and the outlet of the first pump head is closed. The second pressure-volume curve is determined by controlling the drive structure to push the plunger rod at a preset moving speed under the condition that a second pump head is deployed at the front end of the pump body and the outlet of the second pump head is closed. The controller uses the curve weight corresponding to each first pressure-volume curve to perform a weighted summation of at least one volume difference under each pressure condition to determine the target volume difference under each pressure condition. The controller is used to perform nonlinear fitting on the target volume difference under each pressure condition to determine the nonlinear relationship between the volume compensation value and the pressure condition, and this nonlinear relationship is used as the correction model.

3. The method according to claim 2, characterized in that, Different first pressure-volume curves are used to characterize target liquids with different concentrations. These pressure-volume curves are determined under the condition that a first pump head is deployed at the front end of the pump body and the first pump head is closed. Different curve weights are used to characterize the application frequency of target liquids with different concentrations.

4. The method according to claim 1, characterized in that, The step of using the controller to dynamically compensate the real-time pump pressure data based on the deformation compensation value and determining the target pump pressure data includes: Based on the deformation compensation value, the volume value corresponding to the real-time pump internal pressure data in the first pressure-volume curve is updated to obtain the target volume value; Based on the second pressure-volume curve, the pressure value corresponding to the target volume value in the second pressure-volume curve is taken as the target pump internal pressure data.

5. The method according to claim 1, characterized in that, The drive structure for driving the plunger rod in the plunger pump is magnetically coupled to the tail end of the plunger rod that reciprocates along the linear guide rail.

6. The method according to claim 5, characterized in that, The drive structure is provided with a permanent magnet, the tail end of the plunger rod is fixed with a magnetic material, and the contact surface between the plunger rod and the drive structure is a plane or a matching concave-convex structure.

7. A deformation compensation device, characterized in that, Applied to a plunger pump, the plunger pump includes a pump body and a first pump head at the front end of the pump body, a pressure sensor and a controller are deployed in the plunger pump, and the controller has a built-in calibration model; the deformation compensation device includes: The pressure acquisition module is used to acquire real-time internal pressure data of the first pump head by using a pressure sensor deployed at the outlet of the first pump head when the plunger pump is delivering the target liquid. The compensation value determination module is used to determine the deformation compensation value of the first pump head under the real-time pump pressure data using the controller and a pre-deployed correction model; wherein the correction model is determined based on the first pressure-volume curve corresponding to the first pump head and the second pressure-volume curve corresponding to the second pump head; the first pump head and the second pump head are made of different materials. The deformation correction module is used to dynamically compensate the real-time pump pressure data based on the deformation compensation value using the controller, and to determine the target pump pressure data.

8. An electronic device, characterized in that, include: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the deformation compensation method as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the deformation compensation method as described in any one of claims 1-6.

10. A computer program product comprising a computer program that, when executed by a processor, implements the deformation compensation method according to any one of claims 1-6.

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