CN113707519B

CN113707519B - X-ray tube operation control method and system based on dynamic pressure sliding bearing

Info

Publication number: CN113707519B
Application number: CN202111095518.4A
Authority: CN
Inventors: 肖鑫; 张曦
Original assignee: Wuhan United Imaging Healthcare Co Ltd
Current assignee: Wuhan United Imaging Healthcare Co Ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2024-03-12
Anticipated expiration: 2041-09-17
Also published as: CN113707519A

Abstract

The application relates to an operation control method and system of a rotary anode X-ray tube based on a dynamic pressure sliding bearing, wherein the method comprises the following steps: acquiring relevant working parameters of an X-ray tube; the working parameters include: at least one of a rotational speed of a rotating member of a dynamic pressure slide bearing in an X-ray tube, an X-ray tube operating current, or an X-ray tube operating voltage; determining the running stability of the dynamic pressure sliding bearing based on the operating parameters; and performing operation control on the X-ray tube or the dynamic pressure sliding bearing in the X-ray tube based on the operation stability.

Description

X-ray tube operation control method and system based on dynamic pressure sliding bearing

Technical Field

The application relates to the technical field of X-ray tubes, in particular to an operation control method and system of an X-ray tube based on a dynamic pressure sliding bearing.

Background

The hydrodynamic sliding bearing is a bearing lubricated by fluid dynamic pressure, a cavity is formed between a shaft sleeve and a mandrel of the hydrodynamic sliding bearing, fluid media such as liquid, gas and the like are filled in the cavity, and when the hydrodynamic sliding bearing operates, the fluid media interact with the shaft sleeve and the mandrel. The dynamic pressure slide bearing as a rotating member can be applied to a plurality of X-ray scanning apparatuses, for example, as a bearing for a rotating anode of an X-ray tube in an X-ray apparatus.

When the dynamic pressure sliding shaft operates, the interaction between the fluid medium and the shaft sleeve and the mandrel can influence the operation stability of the dynamic pressure sliding bearing, and if the operation stability of the dynamic pressure sliding bearing is poor, the operation effect of the dynamic pressure sliding bearing can be influenced and the damage to devices can be caused, and the operation effect of X-ray scanning equipment such as X-ray equipment can be influenced and the damage to the devices can be caused. In order to meet the requirements of stability of dynamic pressure sliding bearing in operation, it is necessary to provide a method and a system for controlling operation of a rotary anode X-ray tube based on dynamic pressure sliding bearing.

Disclosure of Invention

The purpose of the present specification is to provide a method and a system for controlling operation of a rotating anode X-ray tube based on a dynamic pressure sliding bearing, which determine operation stability based on an operation parameter related to the X-ray tube to accurately estimate operation stability corresponding to a preset operation parameter, and can control operation of the dynamic pressure sliding bearing in the X-ray tube or the X-ray tube based on judging whether the operation stability meets a preset condition, so as to effectively control the stability of the dynamic pressure sliding bearing in the X-ray tube or the X-ray tube in actual operation to meet a requirement.

One of the embodiments of the present specification provides an operation control method of a rotary anode X-ray tube based on a dynamic pressure sliding bearing, the method comprising: acquiring relevant working parameters of an X-ray tube; the working parameters include: at least one of a rotational speed of a rotating member of a dynamic pressure slide bearing in an X-ray tube, an X-ray tube operating current, or an X-ray tube operating voltage; determining the running stability of the dynamic pressure sliding bearing based on the operating parameters; and performing operation control on the X-ray tube or the dynamic pressure sliding bearing in the X-ray tube based on the operation stability.

One of the embodiments of the present specification provides an operation control system for a rotary anode X-ray tube based on a dynamic pressure slide bearing, the system comprising: the parameter acquisition module is used for acquiring working parameters related to the X-ray tube; the working parameters include: at least one of a rotational speed of a rotating member of a dynamic pressure slide bearing in an X-ray tube, an X-ray tube operating current, or an X-ray tube operating voltage; the stability estimation module is used for determining the operation stability of the dynamic pressure sliding bearing based on the working parameters; and the operation control module is used for performing operation control on the X-ray tube or the dynamic pressure sliding bearing in the X-ray tube based on the operation stability.

One of the embodiments of the present specification provides an operation control apparatus for a dynamic pressure slide bearing-based rotary anode X-ray tube, the apparatus including at least one processor and at least one storage device for storing instructions, which when executed by the at least one processor, implement the dynamic pressure slide bearing-based operation control method for a rotary anode X-ray tube.

Drawings

The present specification will be further elucidated by way of example embodiments, which will be described in detail by means of the accompanying drawings. The embodiments are not limiting, in which like numerals represent like structures, wherein:

Fig. 1 is a schematic view of an application scenario of a dynamic pressure slide bearing-based rotary anode X-ray tube operation control system according to some embodiments of the present description;

FIG. 2 is a block diagram of an operational control system for a dynamic pressure slide bearing based rotary anode X-ray tube according to some embodiments of the present disclosure;

FIG. 3 is an exemplary flow chart of a method of controlling operation of a dynamic pressure slide bearing based rotary anode X-ray tube according to some embodiments of the present disclosure;

FIG. 4 is an exemplary schematic illustration of a dynamic pressure slide bearing according to some embodiments of the present disclosure;

FIG. 5 is an exemplary flow chart of a method of obtaining operational stability of a dynamic pressure slide bearing according to some embodiments of the present disclosure;

fig. 6 is a diagram showing operation control of the dynamic pressure slide bearing in the X-ray tube or the X-ray tube based on a judgment result according to some embodiments of the present specification.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present application, and it is obvious to those skilled in the art that the present application may be applied to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.

It will be appreciated that "system," "apparatus," "unit" and/or "module" as used herein is one method for distinguishing between different components, elements, parts, portions or assemblies of different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

As used in this specification and the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.

A flowchart is used in this specification to describe the operations performed by the system according to embodiments of the present specification. It should be appreciated that the preceding or following operations are not necessarily performed in order precisely. Rather, the steps may be processed in reverse order or simultaneously. Also, other operations may be added to or removed from these processes.

The operation control method and system of a rotating anode X-ray tube based on dynamic pressure sliding bearings disclosed in the specification can be applied to various X-ray devices to control the operation of an X-ray tube in the X-ray device or a dynamic pressure sliding bearing in the X-ray tube. For example, it may be applied to a radiation emitting device employing a rotating anode X-ray tube based on dynamic pressure slide bearings, such as an X-ray scanning device (including but not limited to one or any combination of a computer X-ray Camera (CR), a digital X-ray camera (DR), a computed tomography scanner (CT), a flat-panel X-ray machine, a mobile X-ray device (such as a mobile C-arm machine), a digital subtraction angiography scanner (DSA), an emission computed tomography scanner (ECT), etc.), a radiotherapy device (including but not limited to a medical linac (RT), etc.), etc. For illustrative purposes only, the present application will take an X-ray scanning apparatus as an example to describe the disclosed technical solution in detail. Wherein the X-ray scanning device comprises an X-ray tube comprising a cathode and a rotating anode, which may comprise an anode target and a dynamic pressure slide bearing. The anode target is fixed on the dynamic pressure sliding bearing, when the X-ray tube works, the dynamic pressure sliding bearing is driven to operate, the rotating shaft (namely the rotating part) of the dynamic pressure sliding bearing can be rotated to enable the anode target to rotate, and the cathode emission electron beam bombards the rotating anode target based on the working voltage and the working current of the X-ray tube to generate X-rays.

Fig. 4 is an exemplary schematic view of a dynamic pressure slide bearing according to some embodiments of the present description. As shown in fig. 4, the dynamic pressure sliding bearing includes a spindle 410, a sleeve 420, and a fluid layer 430 formed between the spindle and the sleeve when the dynamic pressure sliding bearing is operated, the fluid layer 430 being filled with a fluid medium such as a liquid (e.g., liquid metal, oil, water, etc.), a gas (e.g., air, carbon dioxide, nitrogen, etc.), or the like. The dynamic pressure slide bearing may be driven by a drive system to rotate the spindle or sleeve, and the rotating component may be referred to as a rotating component. When the dynamic pressure sliding shaft operates, the fluid medium in the fluid layer can avoid the mutual contact of the mandrel and the shaft sleeve, so that the lubrication effect between the mandrel and the shaft sleeve is realized, the friction resistance is reduced, and the surfaces of the mandrel and the shaft sleeve are protected.

In some embodiments, the X-ray tube or the hydrodynamic slide bearing in the X-ray tube may operate according to set operating parameters. When the dynamic pressure sliding bearing in the X-ray tube or the X-ray tube operates, the setting of the working parameters can influence the interaction between the fluid medium and the shaft sleeve and the mandrel, so that the operation stability of the dynamic pressure sliding bearing is influenced, and the adverse effect is brought to the operation of the dynamic pressure sliding bearing in the X-ray tube or the X-ray tube. For example, for an X-ray tube, if the operation stability of the dynamic pressure sliding bearing is poor or the dynamic pressure sliding bearing does not meet the requirement, the dynamic pressure sliding bearing is unstable in rotation, so that an anode target on the bearing is unstable in rotation, the focal position of the X-ray tube is shifted, the imaging quality of the X-ray tube in scanning imaging is affected, the device of the dynamic pressure sliding bearing is worn, and the service life of the dynamic pressure sliding bearing is reduced.

The present specification provides a method and a system for controlling operation of a rotating anode X-ray tube based on a dynamic pressure sliding bearing, based on working parameters related to the X-ray tube, the operation stability of the dynamic pressure sliding bearing is estimated, and by judging whether the estimated operation stability parameters meet preset conditions, the dynamic pressure sliding bearing in the X-ray tube or the X-ray tube is further controlled to operate based on the judgment result, and the stability of the dynamic pressure sliding shaft in the dynamic pressure X-ray tube or the X-ray tube during operation can be effectively ensured and improved.

Fig. 1 is a schematic view of an application scenario of a dynamic pressure slide bearing-based rotary anode X-ray tube operation control system according to some embodiments of the present description.

As shown in fig. 1, an application scenario 100 of an operation control system of a dynamic pressure slide bearing-based rotary anode X-ray tube may include an X-ray scanning device 110, a network 120, a terminal 130, a processing device 140, and a storage device 150.

The X-ray scanning apparatus 110 may include an X-ray tube (not shown) and may include one or more other components. The X-ray tube may comprise a cathode, a rotating anode and a dynamic pressure slide bearing (not shown in the figures). The rotating anode in the X-ray tube may be rotated based on a dynamic pressure slide bearing. In some embodiments, the X-ray tube in the X-ray scanning apparatus 110 and the dynamic pressure slide bearing in the X-ray tube may operate according to set operating parameters. Further description of the operating parameters, the X-ray tube and the operation of the dynamic pressure slide bearing in the X-ray tube can be seen in fig. 3 and its associated description.

The terminal 130 may include a mobile device 131, a tablet 132, a notebook 133, or the like, or any combination thereof. In some embodiments, the terminal 130 may interact with other components in the application scenario 100 of the dynamic pressure slide bearing based rotary anode X-ray tube operation control system through a network. For example, the terminal 130 may send one or more control instructions to the X-ray scanning device 110 to control the X-ray tube in the X-ray scanning device 110 and the hydrodynamic sliding bearing in the X-ray tube to operate as instructed. For another example, the terminal 130 may also receive a processing result of the processing device 140, for example, operation stability, a determination result of operation stability, and the like. In some embodiments, mobile device 131 may include a smart home device, a wearable device, a mobile device, a virtual reality device, an augmented reality device, or the like, or any combination thereof. In some embodiments, the smart home devices may include smart lighting devices, smart appliance control devices, smart monitoring devices, smart televisions, smart cameras, interphones, and the like, or any combination thereof. In some embodiments, the wearable device may include a bracelet, footwear, glasses, helmet, watch, clothing, backpack Smart accessories, etc., or any combination thereof. In some embodiments, the mobile device may include a mobile phone, a Personal Digital Assistant (PDA), a gaming device, a navigation device, a POS device, a notebook, a tablet, a desktop, etc., or any combination thereof. In some embodiments, the virtual reality device and/or augmented reality device may include a virtual reality helmet, virtual reality glasses, virtual reality patches, augmented reality helmets, augmented reality glasses, augmented reality patches, and the like, or any combination thereof. For example, the virtual reality device and/or augmented reality device may include Google Glass ^TM 、Oculus Rift ^TM 、HoloLens ^TM Or Gear VR ^TM Etc. In some embodiments, terminal 130 may be part of processing device 140.

In some embodiments, processing device 140 may process data and/or information obtained from X-ray scanning device 110, terminal 130, and/or storage device 150. For example, the processing device 140 may derive operational stability based on operating parameters associated with the X-ray tube. For another example, the processing device 140 may determine whether the operation stability satisfies the preset condition, and may adjust each operation parameter so that the operation stability satisfies the preset condition, and the like. In some embodiments, the processing device 140 may also control the operation of the X-ray tube in the X-ray scanning device 110 or the hydrodynamic slide bearing in the X-ray tube. For example, the processing device 140 may control the operation of the X-ray tube in the X-ray scanning device 110 or the dynamic pressure slide bearing in the X-ray tube based on the set operation parameters of the operation voltage, the operation current, the rotation speed of the rotating member of the dynamic pressure slide bearing, the rotation speed of the rotating device, and the like. In some embodiments, processing device 140 may comprise a single server or a group of servers. The server group may be centralized or distributed. In some embodiments, the processing device 140 may be local or remote. For example, processing device 140 may access information and/or data from X-ray scanning device 110, terminal 130, and/or storage device 150 via network 120. As another example, processing device 140 may be directly connected to X-ray scanning device 110, terminal 130, and/or storage device 150 to access information and/or data. In some embodiments, the processing device 140 may be implemented on a cloud platform. For example, the cloud platform may include one or a combination of several of private cloud, public cloud, hybrid cloud, community cloud, distributed cloud, cross-cloud, multi-cloud, and the like.

Storage device 150 may store data (e.g., operating parameters, etc.), instructions, and/or any other information. In some embodiments, the storage device 150 may store data obtained from the X-ray scanning device 110, the terminal 130, and/or the processing device 140, e.g., the storage device 150 may store X-ray tube related operating parameters obtained from the X-ray scanning device 110. In some embodiments, the storage device 150 may store data and/or instructions for execution or use by the processing device 140 to perform the exemplary methods described herein. For example, the storage device 140 may store the operation stability of the dynamic pressure slide bearing. For another example, the storage device 140 may also store the adjusted operating parameters. In some embodiments, the storage device 150 may include one or a combination of a large capacity memory, a removable memory, a volatile read-write memory, a read-only memory (ROM), and the like. Mass storage may include magnetic disks, optical disks, solid state disks, removable memory, and the like. Removable memory may include flash drives, floppy disks, optical disks, memory cards, ZIP disks, tape, and the like. Volatile read-write memory can include Random Access Memory (RAM). The RAM may include Dynamic Random Access Memory (DRAM), double data rate synchronous dynamic random access memory (DDR-SDRAM), static Random Access Memory (SRAM), silicon controlled random access memory (T-RAM), zero capacitance random access memory (Z-RAM), etc. ROM may include mask read-only memory (MROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), digital versatile disc, and the like. In some embodiments, storage device 150 may be implemented by a cloud platform as described herein. For example, the cloud platform may include one or a combination of several of private cloud, public cloud, hybrid cloud, community cloud, distributed cloud, cross-cloud, multi-cloud, and the like. In some embodiments, the storage device 150 may be part of the processing device 140 or may be separate and directly or indirectly connected to the processing device 140.

The network 120 may comprise any suitable network capable of facilitating the exchange of information and/or data of the application scenario 100 of the dynamic pressure slide bearing based rotary anode X-ray tube operation control system. In some embodiments, one or more components of the application scenario 100 of the dynamic pressure slide bearing based rotary anode X-ray tube operation control system (e.g., the X-ray scanning device 110, the terminal 130, the processing device 140, the storage device 150, etc.) may exchange information and/or data with one or more components of the application scenario 100 of the dynamic pressure slide bearing based rotary anode X-ray tube operation control system over the network 120. For example, processing device 140 may obtain X-ray tube related operating parameters from X-ray scanning device 110 or storage device 150 via network 120. Network 120 may include one or a combination of public networks (e.g., the internet), private networks (e.g., local Area Network (LAN), wide Area Network (WAN)), etc.), wired networks (e.g., ethernet), wireless networks (e.g., 802.11 networks, wireless Wi-Fi networks, etc.), cellular networks (e.g., long Term Evolution (LTE) networks), frame relay networks, virtual Private Networks (VPN), satellite networks, telephone networks, routers, hubs, server computers, etc. For example, network 120 may include a wired network, a fiber optic network, a telecommunications network, a local area network, a Wireless Local Area Network (WLAN), a Metropolitan Area Network (MAN), a Public Switched Telephone Network (PSTN), bluetooth ^TM Network, zigBee ^TM A network, a Near Field Communication (NFC) network, or the like. In some embodiments, network 120 may include one or more network access points. For example, the network 120 may include wired and/or wireless network access points, such as base stations and/or internet switching points, through which one or more components of the medical image acquisition system 100 may connect to the network 120 to exchange data and/or information.

Fig. 2 is a block diagram of an operational control system of a dynamic pressure slide bearing based rotary anode X-ray tube according to some embodiments of the present application.

As shown in fig. 2, the dynamic pressure slide bearing based rotary anode X-ray tube operation control system 200 may include a parameter acquisition module 210, a stability estimation module 220, and an operation control module 230.

In some embodiments, the parameter acquisition module 210 may be configured to acquire operating parameters associated with the X-ray tube; the working parameters include: at least one of the rotational speed of a rotating member of a dynamic pressure slide bearing in an X-ray tube, an X-ray tube operating current, and an X-ray tube operating voltage.

In some embodiments, the stability prediction module 220 may be configured to determine an operational stability of the dynamic pressure slide bearing based on the operating parameter. In some embodiments, the stability estimation module 220 may be further configured to process the plurality of operating parameters to obtain the operational stability of the dynamic pressure sliding bearing through an operational stability evaluation model; or determining the operation stability corresponding to the plurality of working parameters according to the mapping relation between the plurality of working parameters and the operation stability.

In some embodiments, the dynamic pressure sliding shaft is operated, the rotating member rotates and forms a fluid layer with the fixed member.

In some embodiments, the stability estimation module 220 may also be configured to determine a fluid temperature and a spatial structural deformation of the fluid layer based on the operating voltage, the operating current, and an operating time of the X-ray tube; determining the bearing capacity of the dynamic pressure sliding bearing; and determining the running stability based on the fluid temperature of the fluid layer, the spatial structure deformation of the fluid layer, the rotational speed of the rotating member, and the bearing capacity of the dynamic pressure slide bearing. In some embodiments, the stability estimation module 220 may also be configured to determine a fluid thickness profile and a fluid viscosity of the fluid layer based on the fluid temperature of the fluid layer and the spatial structural deformation of the fluid layer; the running stability is determined based on the fluid thickness distribution, the fluid viscosity, the rotational speed of the rotating member, and the bearing capacity of the dynamic pressure slide bearing.

In some embodiments, the dynamic pressure slide bearing may be mounted on a rotatable device, and the operating parameter may further include a device rotational speed of the rotatable device.

In some embodiments, the stability estimation module 220 may also be configured to determine the load bearing capacity of the dynamic pressure slide bearing based on a device rotational speed of the rotatable device and a gravitational force of the dynamic pressure slide bearing.

In some embodiments, the operation control module 230 may be configured to perform operation control on the X-ray tube or the dynamic pressure slide bearing in the X-ray tube based on the operation stability. In some embodiments, the operation control module 230 may also be configured to feedback the operation stability; receiving an instruction of a user for adjusting at least one parameter of the working parameters based on the fed-back running stability; wherein the adjustment causes the running stability to meet a preset condition; and controlling the operation of the X-ray tube or the dynamic pressure sliding bearing in the X-ray tube based on the adjusted working parameters. In some embodiments, the operation control module 230 may be further configured to adjust at least one of the operating parameters to make the operation stability meet a preset condition if the operation stability is determined not to meet the preset condition; and performing operation control on the X-ray tube or the dynamic pressure sliding bearing in the X-ray tube based on the adjusted operation parameter. In some embodiments, the operation control module 230 may be further configured to adjust the operating parameter if it is determined that the operation stability does not meet the preset condition, by at least one of the following adjustments, thereby adjusting the operation stability to meet the preset condition: adjusting at least one of the operating voltage or the operating current; or adjusting at least one of a rotational speed of the rotating member or a rotational speed of the rotatable device; and performing operation control on the X-ray tube or the dynamic pressure slide bearing in the X-ray tube based on the adjusted operation parameter.

For more details on the parameter acquisition module 210, the stability estimation module 220, and the operation control module 230, reference may be made to fig. 3, 5, and 6 and their associated descriptions, which are not repeated herein.

It will be appreciated by those skilled in the art that, given the principles of the system, various modules may be combined arbitrarily or a subsystem may be constructed in connection with other modules without departing from such principles. For example, the parameter acquisition module 210 and the stability estimation module 220 disclosed in fig. 2 may be implemented by one module. For another example, each module may share one memory module, or each module may have a respective memory module. Such variations are within the scope of the present application.

Fig. 3 is an exemplary flow chart of a method of controlling operation of a dynamic pressure slide bearing based rotary anode X-ray tube according to some embodiments of the present disclosure.

In some embodiments, one or more operations in flow 300 may be implemented by processing device 140. For example, the flow 300 may be stored in the storage device 150 in the form of instructions and executed by the processing device 140 for invocation and/or execution.

As shown in fig. 3, the flow 300 may include the following operations.

In step 310, operating parameters associated with the X-ray tube are obtained.

In some embodiments, step 310 may be performed by parameter acquisition module 210.

As mentioned before, the X-ray tube and the dynamic pressure slide bearing in the X-ray tube will operate according to the set operating parameters. For example, the rotating member of the dynamic pressure slide bearing is rotated according to the set operation parameters, and the X-ray tube is caused to emit rays. In some embodiments, the rotating component of the dynamic pressure slide bearing may be a spindle or a sleeve. For example, the dynamic pressure sliding shaft may be fixed by a spindle, or may be fixed by a sleeve and rotated by a spindle.

In some embodiments, the operating parameters may be obtained from the X-ray tube or a control system for dynamic pressure slide bearings in the X-ray tube or a memory space storing the operating parameters related to the X-ray tube, or may be entered by a user to obtain the operating parameters related to the X-ray tube.

In some embodiments, the X-ray tube related operating parameters may include any one or more of the following: the operating voltage of the X-ray tube, the operating current of the X-ray tube, the operating power of the X-ray tube (also referred to as exposure power, which may be determined based on the operating voltage and the operating current of the X-ray tube), the operating time of the X-ray tube (also referred to as X-ray tube exposure time), the rotational speed of the rotating member of the dynamic pressure slide bearing, and the like.

In some embodiments, the X-ray tube may be mounted on a rotatable device (e.g., a rotatable gantry on which the X-ray tube is located), which may or may not rotate. For example, the X-ray tube is stationary for fixed point X-ray scanning, and for example, the X-ray tube rotates with the gantry in which it is positioned, so that the X-ray tube performs rotational scanning.

In some embodiments, the operating parameters may also include a device rotational speed of the rotatable device. The rotatable device in which the X-ray tube is located may be rotated at a set device rotation speed. In some embodiments, the rotation of the rotatable device in which the dynamic pressure slide bearing is located may affect the bearing capacity of the dynamic pressure slide bearing, for more details on the bearing capacity of the dynamic pressure slide bearing, see fig. 5 and the associated description.

Step 320, determining the operation stability of the dynamic pressure sliding bearing based on the operation parameter.

In some embodiments, step 320 may be performed by the stability prediction module 220.

In some embodiments, the operational stability of the dynamic pressure slide bearing may be characterized by a stable or unstable result, and may also be characterized by a degree of stability (e.g., score, etc.), and the like.

In some embodiments, the operational stability of the dynamic pressure slide bearing may also be characterized by various parameters. The estimated parameter for characterizing the operation stability of the dynamic pressure slide bearing may be referred to as an operation stability parameter.

In some embodiments, based on the X-ray tube related operating parameters, the resulting dynamic pressure slide bearing operating stability parameters may include one or more of the following: eccentricity of dynamic pressure sliding bearing operation, rigidity coefficient and damping coefficient of fluid layer between spindle and shaft sleeve when dynamic pressure sliding bearing is operated. The eccentricity may be the ratio of the distance between the geometric center of the spindle and the geometric center of the sleeve to the difference between the radius of the spindle and the radius of the bearing hole when the dynamic pressure sliding shaft is in operation. The rigidity coefficient of the fluid layer during operation of the dynamic pressure sliding shaft represents the degree of difficulty in elastic deformation of the lubricating film formed by the fluid medium of the fluid layer during operation of the dynamic pressure sliding shaft. The damping coefficient of the fluid layer during operation of the dynamic pressure sliding shaft represents the damping size of the lubricating film formed by the fluid medium of the fluid layer during operation of the dynamic pressure sliding shaft.

In some embodiments, the operational stability of the dynamic pressure slide bearing may be obtained by processing the operational parameters associated with the X-ray tube through an operational stability prediction model. The stability prediction model may be a model reflecting the relationship between the input variables, such as the mapping relationship between the operating parameters associated with the X-ray tube and the operational stability of the output, the functional relationship, and the like.

In some embodiments, the stability prediction model may be obtained by establishing a calculation model or mapping relationship between the input variables and the output parameters.

In some embodiments, the stability prediction model may include a neural network model, such as NN, CNN, RNN, and the like. The relevant working parameters of the X-ray tube are input into a stability pre-estimation model, and the model can be output to obtain the corresponding operation stability.

In some embodiments, when the stability prediction model includes a neural network model, the desired stability prediction model may be obtained through training. In some embodiments, a training sample may be input into the initial model, and model parameters of the initial model are iteratively updated based on a loss function to obtain an operational stability pre-estimated model, where the training sample may include an operational parameter sample related to the X-ray tube and an operational stability tag of the dynamic pressure sliding bearing corresponding to the operational parameter sample.

In some embodiments, obtaining operational stability of the dynamic pressure slide bearing based on the X-ray tube related operating parameters may include: based on the operating voltage, operating current and operating time of the X-ray tube, the amount of heat transferred to the hydrodynamic journal bearing can be determined, and thus the fluid temperature and spatial structural deformation of the fluid layer can be determined; the bearing capacity of the dynamic pressure slide bearing is determined, and the operation stability of the dynamic pressure slide bearing may be determined based on the fluid temperature of the fluid layer, the spatial structure deformation of the fluid layer, the rotational speed of the rotating member of the dynamic pressure slide bearing, and the bearing capacity of the dynamic pressure slide bearing. For more details on the method of determining the operation stability of the dynamic pressure slide bearing, refer to fig. 5 and the description thereof, and are not repeated here.

And 330, performing operation control on the X-ray tube or the dynamic pressure sliding bearing in the X-ray tube based on the operation stability.

In some embodiments, step 330 may be performed by the operation control module 230.

In some embodiments, the operation control module 230 may determine whether the operation stability meets a preset condition, and obtain a determination result. Whether the operation stability satisfies the preset condition may reflect whether the operation of the dynamic pressure slide bearing in the X-ray tube or the X-ray tube is stable or satisfies the requirement.

In some embodiments, the preset condition may be that the operation is stable, or that the operation stability (e.g., score) is not less than a threshold, etc.

In some embodiments, the preset condition may also be a range of values for the respective operational stability parameters. For example: the value range of the eccentricity of the dynamic pressure sliding bearing, the value range of the rigidity coefficient of the fluid layer between the mandrel and the shaft sleeve and the value range of the damping coefficient when the dynamic pressure sliding bearing runs. The range of values may include, for example, values greater than a threshold, less than a threshold, or in a range of values, not in a range of values, etc.

In some embodiments, the preset condition may also be a range of values of parameters obtained by further processing the operational stability parameters. For example, the plurality of operation stability parameters may be normalized, or further processed such as weighted summation, to obtain further parameters, and the preset condition may be a value range of the obtained further parameters.

In some embodiments, determining whether the operational stability satisfies the preset condition may be determining whether one or more of the operational stability parameters satisfy the preset condition.

In some embodiments, the determination of the operation stability may include the operation stability meeting or not meeting a preset condition. For example, if the eccentricity is greater than the threshold, the operation stability parameter does not meet the preset condition as a result of the determination, and if the stiffness coefficient and the damping coefficient of the fluid layer between the spindle and the shaft sleeve are both greater than the threshold when the dynamic pressure sliding shaft is operated, the operation stability parameter does not meet the preset condition as a result of the determination.

In some embodiments, if the operation stability parameter satisfies the preset condition as a result of the operation stability determination, it may be determined that the operation stability of the dynamic pressure sliding bearing satisfies the requirement; and if the judgment result is that the operation stability parameter does not meet the preset condition, judging that the operation stability of the dynamic pressure sliding bearing does not meet the requirement.

In some embodiments, the judging result may further include comparing the determined operation stability parameter with a preset value range, and obtaining a comparison result. In some embodiments, the comparison result may include a score. For example, the closer the operating stability parameter is to the preset range of values, the higher the score. In some embodiments, multiple scores may be obtained for multiple operational stability parameters. In some embodiments, a composite score may be derived based on multiple scores. The composite score may be a weighted average, a weighted sum, etc. of the multiple scores. The preset condition may be that the value of the score or the integrated score is within a set range of values, e.g., the score or the integrated score is greater than a threshold. If the score or the integrated score meets the preset condition, the running stability can be judged to meet the preset condition, namely the running stability meets the requirement.

In some embodiments, the operation stability and the determination result of whether the operation stability satisfies the preset condition may be fed back to the user, the control device of the X-ray tube, or the like. In some embodiments, the operation stability estimated according to the current working parameters can be intuitively and clearly known by the user through feedback to the user through a user interface.

In some embodiments, if the obtained operation stability determination result is that the operation stability of the dynamic pressure slide bearing meets the requirement, the operation control module 230 may cause the X-ray tube and the dynamic pressure slide bearing in the X-ray tube to operate based on the operation parameter.

In some embodiments, if the obtained operation stability determination result indicates that the operation stability of the dynamic pressure sliding bearing does not meet the requirement, the operation control module 240 may adjust at least one parameter of the operating parameters related to the X-ray tube, so that the operation stability determined based on the adjusted operating parameters meets the preset condition. The dynamic pressure sliding bearing in the X-ray tube and the X-ray tube can meet the operation stability requirement based on the adjusted preset working parameters.

In some embodiments, at least one of the operating parameters may also be selected for adjustment by the user based on the fed-back operating stability, and the operating control module 240 may receive the adjusted operating parameter.

For more details on the method of controlling the operation of the X-ray tube and the dynamic pressure slide bearing in the X-ray tube based on the determination result, refer to fig. 6 and the related description thereof, and are not repeated here.

It should be noted that the above description of the process 300 is for purposes of illustration and description only and is not intended to limit the scope of applicability of the application. Various modifications and changes to flow 300 will be apparent to those skilled in the art in light of the teachings of this application. However, such modifications and variations are still within the scope of the present application.

Fig. 5 is an exemplary flow chart of a method of obtaining operational stability of a dynamic pressure slide bearing according to some embodiments of the present description.

In some embodiments, one or more operations in flow 500 may be implemented by processing device 140. For example, the flow 500 may be stored in the storage device 150 in the form of instructions and executed by the processing device 140 for invocation and/or execution.

In some embodiments, one or more operations in flow 500 may be performed by stability prediction module 220. The process 500 provides an exemplary method for achieving operational stability of the dynamic pressure slide bearing described in 320.

As shown in fig. 5, the flow 500 may include the following operations.

Step 510, determining the fluid temperature and spatial structure deformation of the fluid layer based on the operating voltage, operating current, and operating time of the X-ray tube.

In some embodiments, the amount of heat transferred to the hydrodynamic journal bearing may be determined based on the operating voltage, operating current, and operating time of the X-ray tube; the heat transferred to the dynamic pressure slide bearing causes a change in the temperature of the dynamic pressure slide bearing, resulting in a temperature distribution of the dynamic pressure slide bearing, and thus the fluid temperature of the fluid layer and the spatial structural deformation of the fluid layer can be determined. Wherein, the fluid temperature refers to the temperature of the fluid medium in the fluid layer when the axle is operated. The fluid temperature may be the average temperature of the fluid temperature at different locations in the fluid layer, or the highest value of the fluid temperature at different locations in the fluid layer, or the temperature distribution at each location.

The deformation of the space structure refers to the deformation of the cavity structure corresponding to the fluid layer. Due to the temperature change of the dynamic pressure sliding bearing, the mandrel and the shaft sleeve forming the cavity structure corresponding to the fluid layer can deform, such as thermal expansion, so as to further cause the deformation of the formed cavity structure, namely the shape change of the inner wall of the cavity. For example, at least one of the radial upper core shaft and the inner wall of the shaft sleeve corresponding to the 30-degree angle expands 2mm toward the cavity direction with the center of the bearing as the center). In some embodiments, the spatial structural deformation may include coefficients of thermal expansion of the mandrel and sleeve (e.g., 0.15) corresponding to the temperature of the fluid layer, or spatial structural variations of the fluid layer (e.g., 2mm expansion of the inner wall). In some embodiments, the spatial structure configuration variables may include deformation amounts of a plurality of positions of the cavity structure corresponding to the fluid layer (e.g., inner wall positions corresponding to radial positions of a certain central angle about the center of the bearing), or deformation amounts of a plurality of portions of the cavity structure corresponding to the fluid layer (e.g., inner wall portions corresponding to a certain range of central angles (e.g., 0-30 degrees) about the center of the bearing).

In some embodiments, a mapping relationship between the operating voltage, operating current, and operating time of the X-ray tube and the fluid temperature and the spatial structure deformation of the fluid layer (such as a one-to-one correspondence relationship between the operating power and the operating time and the fluid temperature and the spatial structure deformation of the fluid layer), a calculation model (such as a thermodynamic calculation model of heat transfer, thermal expansion, etc., a neural network model, etc.) may be established. And obtaining the fluid temperature and the spatial structural deformation of the corresponding fluid layer through a mapping relation or a calculation model based on the working power and the working time of the dynamic pressure sliding bearing.

In some embodiments, the mapping relationship, the calculation model may be corrected based on monitoring data of the dynamic pressure sliding bearing in actual operation (e.g., measurement data of fluid temperature of the dynamic pressure sliding bearing in actual operation), so that the mapping relationship, the calculation model are more accurate.

By way of example only, during operation of the X-ray tube, the cathode-emitting electron beam impinges upon an anode target mounted on the hydrodynamic journal bearing in accordance with the operating voltage, operating current and operating time of the X-ray tube, and energy is converted into heat which is transferred to the hydrodynamic journal bearing. The X-ray tube is operated at a set operating voltage, operating current and operating time, the energy generated can be determined, the amount of heat transferred to the hydrodynamic journal bearing can be further determined, and a computational model can be further built based on the heat transfer theory (e.g., hydrodynamic journal bearing parameters such as material properties, boundary conditions, etc. of the hydrodynamic journal bearing are set by finite element software, a thermal simulation computational model is built). And solving a calculation model through a finite element calculation method to obtain the fluid temperature of the fluid layer, and establishing the calculation model based on the relation between the temperature and the thermal expansion to obtain the spatial structure deformation of the fluid layer corresponding to the fluid temperature.

Step 520, determining the operation stability of the dynamic pressure sliding bearing based on the fluid temperature of the fluid layer, the spatial structure deformation of the fluid layer, the rotational speed of the rotating member of the dynamic pressure sliding bearing, and the bearing capacity of the dynamic pressure sliding bearing.

In some embodiments, the load bearing capacity of the dynamic pressure slide bearing may be determined. The bearing capacity of the dynamic pressure sliding bearing refers to the load required to be borne when the dynamic pressure sliding bearing operates.

In some embodiments, the load bearing force of the dynamic pressure slide bearing may be the gravitational force of the dynamic pressure slide bearing. For example, the fixed position of the X-ray tube is scanned at fixed points, and the bearing capacity of the dynamic pressure sliding bearing is the gravity of the dynamic pressure sliding bearing.

In some embodiments, the X-ray tube is mounted on a rotatable device, the rotation of which increases the centrifugal force generated by the rotation of the rotatable device for the load of the dynamic pressure slide bearing. The bearing force of the dynamic pressure slide bearing may be a resultant force of a centrifugal force generated by rotation of the rotary device and a gravitational force of the dynamic pressure slide bearing. Centrifugal force generated by rotation of the rotating device may be determined based on the device rotational speed.

The fluid temperature of the fluid layer, the spatial structural deformation of the fluid layer, the rotational speed of the rotating member of the dynamic pressure slide bearing, and the bearing capacity of the dynamic pressure slide bearing can all have an influence on the stability of the dynamic pressure slide bearing operation. Based on the several aspects, the influence of the heat generated by the device during the operation of the dynamic pressure sliding bearing on the operation stability of the dynamic pressure sliding bearing and the influence of the spatial structural deformation of the fluid layer, the bearing rotating speed and the bearing capacity of the bearing caused by the heat generated by the operation of the device on the operation stability of the dynamic pressure sliding bearing can be comprehensively considered, so as to determine the operation stability for evaluating the operation stability.

In some embodiments, a mapping relationship between operation stability parameters such as fluid temperature of a fluid layer, spatial structure deformation of the fluid layer, rotational speed of a dynamic pressure sliding bearing, bearing capacity and operation stability of the dynamic pressure sliding bearing, for example, eccentricity of operation of the dynamic pressure sliding bearing, rigidity coefficient and damping coefficient of the fluid layer between a mandrel and a shaft sleeve when the dynamic pressure sliding bearing is operated, and a calculation model (for example, fluid calculation theory such as Reynolds equation, also called Reynolds equation, neural network model, and the like) can be established. Based on the fluid temperature of the fluid layer, the spatial structural deformation of the fluid layer, the rotational speed of the rotating member of the dynamic pressure slide bearing, the bearing capacity of the dynamic pressure slide bearing, the running stability can be obtained by a mapping relation or a calculation model.

In some embodiments, the fluid thickness profile and fluid viscosity of the fluid layer may also be determined based on the fluid temperature of the fluid layer and the spatial structural deformation of the fluid layer. And determining the running stability based on the fluid thickness distribution, the fluid viscosity, the rotation speed of the dynamic pressure sliding bearing and the bearing capacity of the dynamic pressure sliding bearing.

The fluid thickness distribution of the fluid layer refers to the fluid thickness distribution of the fluid layer during operation of the bearing, and may include the fluid thickness at various locations of the fluid layer (e.g., at various angular positions centered about the center of the bearing). The fluid thickness profile of the fluid layer may be determined based on the spatial structural deformation of the fluid layer.

The viscosity of the fluid is related to the temperature of the fluid medium. The fluid viscosity of the fluid layer may be determined based on the fluid temperature. For example, for liquid metals, the higher the temperature, the lower the fluid viscosity.

In some embodiments, a mapping relationship between the fluid temperature of the fluid layer, the spatial structure deformation of the fluid layer and the fluid thickness distribution and the fluid viscosity of the fluid layer (e.g., a one-to-one correspondence between the fluid temperature of the fluid layer, the spatial structure deformation of the fluid layer and the fluid thickness distribution and the fluid viscosity of the fluid layer), a computational model (e.g., a computational model based on a relationship between the viscosity and the temperature change of the fluid, a computational model of a correspondence between the spatial structure deformation and the fluid thickness distribution, a neural network model, etc.) may be established. Based on the fluid temperature of the fluid layer and the spatial structure deformation of the fluid layer, the fluid thickness distribution and the fluid viscosity of the fluid layer can be obtained through a mapping relation or a calculation model.

In some embodiments, by determining the fluid thickness distribution and the fluid viscosity of the fluid layer based on the fluid temperature and the spatial structural deformation of the fluid layer determined by the operating heat of the X-ray tube, a combination of the effect of heat on the operation of the bearing and the effect of fluid movement on the operation of the bearing is achieved to determine the operational stability of the dynamic pressure slide bearing, such that an accurate operational stability can be determined.

It should be noted that the above description of the process 500 is for purposes of illustration and description only and is not intended to limit the scope of applicability of the application. Various modifications and changes to flow 300 will be apparent to those skilled in the art in light of the teachings of this application. However, such modifications and variations are still within the scope of the present application.

Fig. 6 is an exemplary flow chart of a method of operating control of an X-ray tube or dynamic pressure slide bearing in an X-ray tube based on the operating stability, according to some embodiments of the present disclosure.

In some embodiments, one or more operations in flow 600 may be implemented by processing device 140. For example, the flow 600 may be stored in the storage device 150 in the form of instructions and executed by the processing device 140 for invocation and/or execution.

In some embodiments, one or more operations in flow 600 may be performed by run control module 240. Flow 600 provides an exemplary method for implementing 330 the described operational control of an X-ray tube or dynamic pressure slide bearing in an X-ray tube based on the operational stability.

As shown in fig. 6, the flow 600 may include the following operations.

In step 610, if the running stability is determined not to meet the preset condition, the working parameter is adjusted, so as to adjust the running stability to meet the preset condition.

In some embodiments, one or more of the operating parameters associated with the X-ray tube may be adjusted, such as adjusting one or more of an operating voltage of the X-ray tube, an operating current of the X-ray tube, an operating time of the X-ray tube, a rotational speed of a rotating member of the dynamic pressure slide bearing, and a rotational speed of a device in which the X-ray tube is located, such that an operational stability of the dynamic pressure slide bearing determined based on the adjusted operating parameters satisfies a preset condition.

In some embodiments, one or all of an operating voltage, an operating current, and an operating time of the X-ray tube may be adjusted to adjust the fluid temperature and the spatial structure deformation to vary, thereby adjusting a determined operational stability (e.g., eccentricity of dynamic sliding bearing operation, stiffness coefficient of a fluid layer between a shaft core and a shaft sleeve, damping coefficient of a fluid layer between a shaft core and a shaft sleeve) to satisfy a preset condition.

In some embodiments, the rotational speed of the rotating component of the dynamic sliding bearing may be adjusted to adjust the determined operational stability (e.g., eccentricity of dynamic sliding bearing operation, stiffness coefficient of fluid layer between the shaft core and the sleeve, damping coefficient of fluid layer between the shaft core and the sleeve) to meet preset conditions.

In some embodiments, the device rotation speed of the device in which the X-ray tube is located (e.g., the gantry in which the X-ray tube is located) may also be adjusted, or the rotation speed of the rotating member of the dynamic pressure slide bearing and the device rotation speed of the device in which the X-ray tube is located may be simultaneously adjusted, so that the determined operation stability (such as the eccentricity of the dynamic pressure slide bearing operation, the stiffness coefficient of the fluid layer between the shaft core and the shaft sleeve, and the damping coefficient of the fluid layer between the shaft core and the shaft sleeve) may be adjusted to satisfy the preset condition.

In some embodiments, all of the foregoing operating parameters may be adjusted to adjust certain operating stability (e.g., eccentricity of dynamic pressure slide bearing operation, stiffness coefficient of fluid layer between shaft core and sleeve, damping coefficient of fluid layer between shaft core and sleeve) to meet preset conditions.

For example only, for an X-ray tube, if the eccentricity determined based on the relevant X-ray tube operating parameters is greater than a threshold value, it may be determined that the operational stability does not meet the preset condition. One or both of an operating voltage and an operating current of the X-ray tube, and a rotational speed of a rotating member of the dynamic pressure slide bearing may be adjusted so that the determined eccentricity satisfies a requirement of less than or equal to a threshold value.

And 620, performing operation control on the X-ray tube or the dynamic pressure sliding bearing in the X-ray tube based on the adjusted working parameters.

By adjusting the working parameters related to the X-ray tube, the running stability determined based on the adjusted working parameters can be enabled to meet the preset conditions, and then the X-ray tube running based on the adjusted working parameters or the dynamic pressure sliding bearing in the X-ray tube can be enabled to meet the running requirements.

As an example, the operating voltage and operating current of the X-rays may be adjusted, i.e. the operating power of the X-ray tube may be adjusted to control the operation of the X-ray tube or the hydrodynamic sliding bearing in the X-ray tube.

It should be noted that the above description of the process 600 is for purposes of illustration and description only and is not intended to limit the scope of applicability of the application. Various modifications and changes to flow 600 will be apparent to those skilled in the art in light of the teachings of this application. However, such modifications and variations are still within the scope of the present application.

The embodiments of the present specification also provide an apparatus comprising a processor for performing the aforementioned method of controlling operation of a rotating anode X-ray tube based on dynamic pressure slide bearings. The method may include: acquiring relevant working parameters of an X-ray tube; the working parameters include: at least one of a rotational speed of a rotating member of a dynamic pressure slide bearing in an X-ray tube, an X-ray tube operating current, or an X-ray tube operating voltage; determining the running stability of the dynamic pressure sliding bearing based on the operating parameters; and performing operation control on the X-ray tube or the dynamic pressure sliding bearing in the X-ray tube based on the operation stability.

The operation control method and system of the rotating anode X-ray tube based on the dynamic pressure sliding bearing according to the embodiments of the present specification may have beneficial effects including, but not limited to: (1) The operation stability parameters of the dynamic pressure sliding bearing are determined through the related working parameters of the X-ray tube, so that the operation stability of the corresponding dynamic pressure sliding bearing in the operation of the X-ray tube is realized, the operation of the dynamic pressure sliding bearing in the X-ray tube or the X-ray tube can be controlled by judging whether the operation stability meets the preset condition, for example, one or more parameters in the working parameters are adjusted, and the operation effect and the protection device of the dynamic pressure sliding bearing in the X-ray tube and the X-ray tube can be effectively improved; (2) The method has the advantages that the operation stability of the dynamic pressure sliding bearing is determined by combining the influence of heat on the operation of the bearing and the influence of fluid motion on the operation of the bearing through the fluid temperature determined based on the working heat of the X-ray tube and the space structure deformation of the fluid layer, which are mapped to the fluid thickness distribution and the fluid viscosity of the fluid layer, so that the determined operation stability of the dynamic pressure sliding bearing is more accurate, and the operation control of the dynamic pressure sliding bearing in the X-ray tube or the X-ray tube is more accurate. It should be noted that, the advantages that may be generated by different embodiments may be different, and in different embodiments, the advantages that may be generated may be any one or a combination of several of the above, or any other possible advantages that may be obtained.

Having described the basic concepts, it will be apparent to those skilled in the art upon reading this detailed disclosure that the foregoing detailed disclosure is intended to be presented by way of example only and not to be limiting. Various alterations, improvements, and modifications may occur and are intended to be within the skill of the art, though not expressly stated herein. Such alterations, improvements, and modifications are intended to be suggested by this disclosure, and are intended to be within the spirit and scope of the exemplary embodiments of this disclosure.

Furthermore, specific terminology has been used to describe embodiments of the disclosure. For example, the terms "one embodiment," "an embodiment," and/or "some embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the disclosure.

Moreover, those of skill in the art will appreciate that aspects of the disclosure may be illustrated and described herein in any of several patentable categories or contexts, including any novel and useful process, machine, manufacture, or composition of matter, or any novel and useful improvement thereof. Furthermore, aspects of the present disclosure may take the form of a computer program product embodied in one or more computer-readable media having computer-readable program code embodied thereon.

The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein (e.g., in baseband or as part of a carrier wave). Such propagated signals may take any of a variety of forms, including electro-magnetic, optical, etc., or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for execution by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable signal medium may be transmitted using any appropriate medium, including wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, scala, smalltalk, eiffel, JADE, emerald, C ++, c#, vb.net, python and the like, a conventional procedural programming language such as the "C" programming language, visualBasic, fortran2003, perl, COBOL 2002, PHP, ABAP, dynamic programming languages, such as Python, ruby and Groovy, or other programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the internet using an internet service provider) or provided as a service, such as software as a service (SaaS), in a cloud computing environment.

Furthermore, the recited order of processing elements or sequences, or the use of numbers, letters, or other designations therefore, is not intended to limit the claimed processes and methods to any order, unless may be specified in the claims. While the foregoing disclosure discusses what is presently considered to be various useful embodiments of the disclosure throughout the various examples, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover modifications and equivalent arrangements that are within the spirit and scope of the disclosed embodiments. For example, while the implementation of the various components described above may be implemented in a hardware device, it may also be implemented as a software-only solution-e.g., installed on an existing server or mobile device.

Similarly, it should be appreciated that in the foregoing description of embodiments of the disclosure, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the various inventive embodiments. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed subject matter requires more features than are expressly recited in each claim. Rather, inventive embodiments lie in less than all features of a single foregoing disclosed embodiment.

In some embodiments, numbers expressing quantities or properties used to describe and claim certain embodiments of the present application should be understood as being modified in some instances by the term "about," approximately, "or" substantially. For example, "about," "approximately," or "substantially" may indicate a 20% change in the values described unless otherwise stated. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by the specific embodiments. In some embodiments, these numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the application are approximations, the numerical values set forth in the specific examples are reported as precisely as practically possible.

Each patent, patent application publication, and other material, such as an article, book, specification, publication, document, article, etc., in this document is incorporated herein by reference in its entirety for all purposes except for any prosecution history associated with that material, material of that material that is inconsistent or conflicting with that document, or material of that material that may have a limiting effect on the maximum scope of the claims now or later associated with that document. As an example, if there is any inconsistency or conflict between the description, definition, and/or use of a term associated with any of the incorporated materials and the description, definition, and/or use of a term associated with the present document, the description, definition, and/or use of the term in the present document controls.

Finally, it is to be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modifications that may be employed may fall within the scope of this application. Thus, by way of example, and not limitation, alternative configurations of embodiments of the present application may be utilized in accordance with the teachings herein. Accordingly, the embodiments of the present application are not limited to as precisely shown and described.

Claims

1. An operation control method of a rotating anode X-ray tube based on a dynamic pressure sliding bearing, comprising:

acquiring relevant working parameters of an X-ray tube; the working parameters include: at least one of a rotational speed of a rotating member of a dynamic pressure slide bearing in an X-ray tube, an X-ray tube operating current, or an X-ray tube operating voltage;

determining an operational stability of the dynamic pressure slide bearing based on the operating parameter, the operational stability parameter including: one or more of eccentricity of dynamic pressure sliding bearing operation, rigidity coefficient and damping coefficient of a fluid layer between the spindle and the shaft sleeve when the dynamic pressure sliding bearing is operated;

and performing operation control on the dynamic pressure sliding bearing in the X-ray tube based on the operation stability parameter.

2. The method of claim 1, the operating control of the dynamic pressure slide bearing in the X-ray tube or the X-ray tube based on the operating stability comprising;

Feeding back the running stability;

if the running stability does not meet the preset condition, the user selects at least one parameter of the working parameters based on the fed-back running stability to adjust so that the running stability meets the preset condition;

and controlling the operation of the X-ray tube or the dynamic pressure sliding bearing in the X-ray tube based on the adjusted working parameters.

3. The method of claim 1, the operating control of the dynamic pressure slide bearing in the X-ray tube or the X-ray tube based on the operating stability comprising:

if the running stability is judged to not meet the preset condition, at least one parameter in the working parameters is adjusted to enable the running stability to meet the preset condition; and is combined with

4. The method of claim 1, the determining operational stability of the dynamic pressure slide bearing based on the operating parameter comprising:

processing the working parameters through an operation stability evaluation model to obtain the operation stability of the dynamic pressure sliding bearing;

Or determining the operation stability corresponding to the working parameter according to the mapping relation between the working parameter and the operation stability.

5. The method of claim 1, the determining operational stability of the dynamic pressure slide bearing based on the operating parameter further comprising:

determining a fluid temperature and a spatial structural deformation of the fluid layer based on the operating voltage, the operating current, and an operating time of the X-ray tube;

determining the bearing capacity of the dynamic pressure sliding bearing; the method comprises the steps of,

the running stability is determined based on the fluid temperature of the fluid layer, the spatial structure deformation of the fluid layer, the rotational speed of the rotating member, and the bearing capacity of the dynamic pressure slide bearing.

6. The method of claim 5, the determining the operational stability based on the fluid temperature of the fluid layer, the spatial structural deformation of the fluid layer, a rotational speed of the rotating component, and the load bearing capacity of the dynamic pressure slide bearing comprising:

determining a fluid thickness profile and a fluid viscosity of the fluid layer based on the fluid temperature of the fluid layer and the spatial structural deformation of the fluid layer;

The running stability is determined based on the fluid thickness distribution, the fluid viscosity, the rotational speed of the rotating member, and the bearing capacity of the dynamic pressure slide bearing.

7. The method of claim 5, the X-ray tube being mounted on a rotatable device;

the bearing capacity of the dynamic pressure slide bearing is determined based on a device rotation speed of the rotatable device and a gravity of the dynamic pressure slide bearing.

8. The method of claim 7, the operating parameters further comprising the device rotational speed of the rotatable device, the implementing operational control of the dynamic pressure slide bearing in the X-ray tube or the X-ray tube based on the operational stability comprising:

if the running stability is judged not to meet the preset condition, the working parameters are adjusted through at least one of the following adjustment, so that the running stability is adjusted to meet the preset condition:

adjusting at least one of the operating voltage or the operating current; or (b)

Adjusting at least one of a rotational speed of the rotating member or a rotational speed of the rotatable device; and

9. An operation control system of a rotating anode X-ray tube based on a dynamic pressure slide bearing, comprising:

the parameter acquisition module is used for acquiring working parameters related to the X-ray tube; the working parameters include: at least one of a rotational speed of a rotating member of a dynamic pressure slide bearing in an X-ray tube, an X-ray tube operating current, or an X-ray tube operating voltage;

the stability estimation module is used for determining the operation stability of the dynamic pressure sliding bearing based on the working parameters, and the parameters of the operation stability comprise: one or more of eccentricity of dynamic pressure sliding bearing operation, rigidity coefficient and damping coefficient of a fluid layer between the spindle and the shaft sleeve when the dynamic pressure sliding bearing is operated;

and the operation control module is used for performing operation control on the dynamic pressure sliding bearing in the X-ray tube based on the operation stability parameter.

10. An operation control device for a rotating anode X-ray tube based on dynamic pressure slide bearings, the device comprising at least one processor and at least one memory device for storing instructions which, when executed by the at least one processor, implement the method of any one of claims 1-8.