Airflow air-core rotor motor and multi-mode control method

Abstract

The invention discloses an air fluid air-core rotor motor and a multi-mode control method, and relates to the field of motor equipment, the air-core rotor motor is configured to be a motor structure used for synchronously realizing power output and medium transmission, and the motor structure comprises a casing, a stator assembly, a rotor shaft core, an end cover assembly, a multi-stage composite sealing structure and a dynamic regulation and control assembly, the casing is of an integrated aluminum alloy casting structure, the inner wall of the casing is provided with a positioning groove used for fixing the stator assembly, and two ends of the casing are provided with sealing flanges used for installing the end cover assemblies. The stator assembly is fixed on the inner wall of the casing and comprises a stator iron core and an excitation winding wound on the stator iron core; the rotor shaft core is arranged at the rotation axis position in the center of the interior of the machine shell. According to the rotor motor and the multi-mode control method, a composite motor scheme integrating power output and medium transmission functions is constructed through a double-layer sleeve type hollow rotor structure and a magnetic circuit coupling design, and high-precision rotating power output and multi-gas fluid medium directional conveying can be synchronously achieved.

Description

Technical Field

[0001] This invention belongs to the field of motor equipment, specifically a pneumatic-fluid hollow rotor motor and a multi-mode control method. Background Technology

[0002] With the rapid development of modern industry, energy, transportation, and high-end equipment technology, the requirements for the functional integration, compact structure, intelligent operation, and environmental adaptability of motor systems are increasing. In numerous application scenarios, such as aerospace, new energy equipment, precision manufacturing, hydrogen energy transmission, medical equipment, and engineering machinery, motors are required not only to provide stable and reliable power output but also to integrate the transmission, cooling, lubrication, or control functions of media (such as gas or liquid) within the same equipment or system. However, traditional motor and media delivery systems often adopt a separate design, where the motor is responsible for power output, while media delivery is accomplished through independent pumps, pipelines, valves, and control units. This separate architecture presents the following prominent problems:

[0003] Large system size and weight: The motor and the medium conveying unit are independent of each other, which increases the size, weight and structural complexity of the overall equipment, which is not conducive to the miniaturization and lightweight design of the equipment, especially in space-sensitive scenarios such as aerospace and mobile platforms.

[0004] Installation and maintenance are difficult: The split structure requires complex interface, pipeline connection and sealing design, which not only makes assembly difficult, but also increases the cost of later maintenance, troubleshooting and replacement, and poses potential risks such as leakage, vibration and misalignment.

[0005] Energy and efficiency losses: The media conveying and power systems often operate independently, lacking a coordinated control mechanism. It is difficult to dynamically adjust the power output and media flow according to the actual working conditions, which can easily lead to energy waste or system response lag, affecting overall efficiency and control accuracy.

[0006] Poor environmental adaptability: Under high temperature, high pressure, high humidity, corrosive or complex mechanical environments, the sealing, protection and durability of traditional split systems face severe challenges, limiting their application in extreme or special working conditions.

[0007] To overcome the above problems, the industry has proposed several technical solutions that integrate power and fluid functions, including the following:

[0008] 1) Publication No. CN107437859A discloses a rotor for an electric motor, which comprises a rotor shaft and a rotor body arranged torsionally on the rotor shaft. The rotor shaft is at least partially constructed as a hollow shaft, wherein a main conveying shaft is arranged torsionally within the hollow shaft, by means of which cooling fluid can be guided through the hollow shaft in a first direction. To provide better cooling for the rotor, the rotor body is configured to have at least one cooling channel extending in the axial direction with an inlet hole on one end side for cooling fluid and an outlet hole on the opposite end side. Here, the cooling fluid guided through the hollow shaft in the first direction can be at least partially introduced into the cooling channel through the inlet hole and can be guided to the outlet hole in a second direction opposite to the first direction.

[0009] 2) Publication No. CN118285040A discloses a rotor assembly for an electric motor, an electric motor having the rotor assembly, and a vehicle having the electric motor. In this patent application, the electric motor has a rotor assembly having a hollow shaft rotatable about a rotation axis and rotor elements. The rotor elements are arranged coaxially with and surround the hollow shaft and can rotate with the hollow shaft. A contact area and a spacer area are formed between the outer circumference of the hollow shaft and the inner circumference of the rotor elements in the circumferential direction about the rotation axis, wherein the rotor elements are arranged to contact the hollow shaft in the contact area and spaced apart from the hollow shaft in the spacer area. To allow cooling fluid to flow, the rotor assembly includes a conduit arranged coaxially with the hollow shaft and the rotor elements in a cavity of the hollow shaft. Cooling fluid can flow out from the conduit along a first flow path and along a second flow path to cool the components of the electric motor.

[0010] While the aforementioned patented solutions have achieved partial integration of the motor and media conveying functions to a certain extent, they all have significant technical limitations, specifically:

[0011] On the one hand, there is insufficient functional integration: existing technologies mostly focus on the circulation and cooling function of a single medium (such as coolant or cooling air) inside the motor, for example, guiding the cooling fluid through hollow shafts or internal rotor channels to improve the heat dissipation performance of the motor body. However, such designs can only meet the passive cooling needs of the motor itself and cannot simultaneously achieve the active delivery, pressure control, or directional distribution functions of external media (such as process gases, hydraulic oil, hydrogen, etc.), that is, they do not truly achieve the coordinated integration of power output and external media transmission.

[0012] On the other hand, in existing integrated solutions, the medium channel usually relies on the modification of the internal space of the motor rotor or stator (such as hollow shaft, close-fitting area flow path, etc.). However, such designs are only for the cooling of the motor body or simple medium diversion needs, and do not form an independent, high-load-bearing fluid transport channel. They also lack adaptable structures for complex media such as high-pressure, high-viscosity or corrosive gases. At the same time, they do not design special protective measures for dynamic sealing and medium leakage risks under high-speed rotation, which makes it difficult to accurately control the flow rate, flow direction and pressure of the medium transport according to the actual working conditions, and the sealing reliability is insufficient.

[0013] Therefore, existing technologies urgently need a new type of motor structure that can truly achieve synchronous, efficient, and safe operation of power output and medium transmission. Summary of the Invention

[0014] The purpose of this invention is to provide a pneumatic-fluid hollow rotor motor and a multi-mode control method to solve the problems of low functional integration, insufficient adaptability of media channels, and weak reliability of sealing regulation in existing integrated solutions.

[0015] To achieve the above objectives, the present invention provides the following technical solution: a pneumatic-fluid hollow rotor motor, wherein the hollow rotor motor is configured as a motor structure for simultaneously realizing power output and medium transmission, the motor structure including a housing, a stator assembly, a rotor shaft, an end cover assembly, a multi-stage composite sealing structure, and a dynamic control assembly, wherein:

[0016] The housing is a one-piece cast aluminum alloy structure, with positioning grooves on the inner wall for fixing the stator assembly and sealing flanges at both ends for installing the end cover assembly.

[0017] The stator assembly is fixed to the inner wall of the housing, and includes a stator core and an excitation winding wound on the stator core;

[0018] The rotor shaft is located at the center of the rotation axis inside the housing. The rotor shaft is a hollow rotor with a double-layer tube structure, which includes an inner tube and an outer tube. The inner tube has a fluid channel running through it along the axial direction. The outer tube is fitted on the outside of the inner tube and has a magnetic structure on its outer wall. This magnetic structure forms a closed magnetic circuit with the excitation winding of the stator assembly.

[0019] The end cap assembly includes bearing housing end caps fixed to both ends of the housing to support the rotation of the rotor shaft. The end cap assembly integrates high-precision ceramic bearings to reduce friction loss and improve corrosion resistance.

[0020] The multi-stage composite sealing structure includes a radial rotary seal located between the outer tube of the rotor shaft and the inner wall of the end cap assembly;

[0021] The dynamic control component includes an embedded sensor group and an active control module. The embedded sensor group includes a miniature pressure sensor, temperature sensor and viscosity sensor integrated into the inner wall of the inner tube, and is used to monitor the medium pressure (range 0-15MPa), temperature (-40℃~200℃) and viscosity (0.5-1000cP) in the fluid channel in real time.

[0022] Preferably, the radial rotary seal is a magnetohydrodynamic seal structure, which achieves a contactless, low-wear dynamic seal by forming a magnetic hydrodynamic sealing film in the gap between the rotating shaft and the stationary component.

[0023] Preferably, the multi-stage composite sealing structure also includes a labyrinth ring disposed between the inner wall of the end cap and the outer tube to prevent external water or liquid from entering the motor.

[0024] Preferably, the active control module is an adjustable guide vane set in the fluid channel, used to dynamically adjust the flow cross-sectional area or flow direction of the fluid according to the sensor signal.

[0025] Preferably, a pressure compensation diaphragm is also provided on the inner side of the inner tube, and the pressure compensation diaphragm is located between the inlet end of the fluid channel and the active control module.

[0026] Preferably, the pressure compensation diaphragm is made of shape memory alloy material, and its deformation is automatically adjusted according to the change of medium pressure to maintain the sealing contact pressure and compensate for the deformation of the shaft core caused by the pressure difference.

[0027] The multi-mode control method for the above-mentioned pneumatic-fluid hollow rotor motor includes the following steps:

[0028] S1: Real-time acquisition of pressure, temperature and viscosity data in the fluid channel through an embedded sensor group, combined with the current feedback signal of the stator winding, to determine the current medium characteristics and load requirements;

[0029] S2: Automatically switch between the following modes based on the state perception results:

[0030] Power output mode: Only the excitation winding of the stator assembly is activated to drive the rotor shaft to rotate. At this time, the fluid channel remains closed, and the motor structure is used as a conventional power source.

[0031] Auxiliary cooling mode: Only the excitation winding of the stator assembly is activated to drive the rotor shaft to rotate at high speed. At this time, the fluid channel maintains a low flow rate and introduces cooling airflow for active cooling of the motor structure under high-speed operation.

[0032] Fluid transport mode: The inlet of the fluid channel is connected to the medium source and the outlet is connected to the actuator through an external pipeline. The stator assembly drives the rotor shaft to rotate at a preset speed, and the medium is transported in a directional manner through the fluid channel.

[0033] Composite Coordination Mode: Simultaneously activates power output and fluid delivery functions, and adjusts the current parameters (such as frequency and amplitude) of the excitation winding through the controller to precisely match the power requirements of the actuator with the fluid flow requirements;

[0034] S3: Based on real-time sensor data, the stator winding power supply parameters (voltage / frequency), adjustable guide vane position, and pressure compensation diaphragm preload are continuously corrected through PID control algorithm or fuzzy logic algorithm to ensure efficient and stable operation under all working conditions.

[0035] Compared with existing technologies, this invention has the following advantages: This invention constructs a composite motor solution integrating power output and media transmission functions through a double-layer sleeve-type hollow rotor structure and magnetic circuit coupling design. It can simultaneously achieve high-precision rotary power output and directional transport of multiple gaseous and fluid media, meeting the needs of high-end equipment in aerospace, new energy, and other fields for system integration and functional synergy. In particular, it solves the bottleneck problems of volume redundancy, seal failure, and poor adaptability under traditional split-type architectures through multi-mode adaptive control and intelligent sealing technology. Specific technical effects include the following:

[0036] 1. The double-layer sleeve-type hollow rotor structure realizes the functional decoupling and physical integration of power output and media transportation. While ensuring efficient output of rotational power, it provides an independent media channel that is completely isolated from the power system, avoiding the problems of complex pipelines and high leakage risk in traditional split-type solutions.

[0037] 2. Through the synergistic design of a multi-stage composite sealing structure and a shape memory alloy pressure compensation diaphragm, a highly reliable dynamic sealing system was constructed, which solved the problems of medium leakage and external contaminant intrusion in high-speed rotation (such as high-speed operation under power output mode) and high pressure differential scenarios. At the same time, the diaphragm adaptive deformation compensates for shaft deformation, maintaining the stability of sealing contact pressure under all operating conditions.

[0038] 3. Through the intelligent linkage of embedded sensor group, adjustable guide vanes, and PID / fuzzy control algorithm, the system realizes multi-mode precise control of power output and media transportation. It supports adaptive switching of four modes: power output, auxiliary cooling, fluid transportation, and composite coordination. Based on real-time media characteristics, it dynamically optimizes stator power supply parameters, guide vane position, and sealing pre-tightening force, meeting the requirements for efficient and stable operation under complex working conditions. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0040] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0041] Figure 2 This is a schematic diagram of the rotor shaft core in Embodiment 1 of the present invention;

[0042] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0043] In the picture:

[0044] 1. Housing; 2. Stator assembly; 3. Rotor shaft; 301. Inner tube; 302. Outer tube; 4. End cap assembly; 5. Radial rotary seal; 6. Labyrinth ring; 7. Embedded sensor group; 8. Adjustable guide vanes; 9. Pressure compensation diaphragm. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] As attached Figure 1 To be continued Figure 2 As shown:

[0047] Example 1: This invention provides a pneumatic-fluid hollow rotor motor. The hollow rotor motor is configured to simultaneously achieve power output and media transmission. The motor structure includes a housing 1, a stator assembly 2, a rotor shaft core 3, an end cover assembly 4, and a multi-stage composite sealing structure. The housing 1 is a one-piece cast aluminum alloy structure with a positioning groove on its inner wall for fixing the stator assembly 2 and sealing flanges at both ends for installing the end cover assembly 4. The stator assembly 2 is fixed to the inner wall of the housing 1 and includes a stator core and an excitation winding wound on the stator core. The rotor shaft core 3 is located at the central rotation axis position inside the housing 1 and is a double-layered sleeve. The hollow rotor structure includes an inner tube 301 and an outer tube 302. The inner tube 301 has a fluid channel extending through it axially, and the outer tube 302 is fitted around the outer side of the inner tube 301. The outer wall of the outer tube 302 has a magnetic structure, which forms a closed magnetic circuit with the excitation winding of the stator assembly 2. The end cover assembly 4 includes bearing end covers fixed to both ends of the housing 1 to support the rotation of the rotor shaft core 3. The end cover assembly 4 integrates a high-precision ceramic bearing to reduce friction loss and improve corrosion resistance. The multi-stage composite sealing structure includes a radial rotation seal 5 located between the outer tube 302 of the rotor shaft core 3 and the inner wall of the end cover assembly 4.

[0048] 1. In one embodiment of the present invention, the radial rotating seal 5 is a magnetic fluid sealing structure, which achieves a contactless and low-wear dynamic seal by forming a magnetic fluid sealing film in the gap between the rotating shaft and the stationary component.

[0049] 2. In one embodiment of the present invention, the multi-stage composite sealing structure further includes a labyrinth ring 6 disposed between the inner wall of the end cap and the outer tube 302 to prevent external water or liquid from entering the motor.

[0050] Working Principle: In Embodiment 1, this invention integrates power and medium functions through a double-layered hollow rotor structure. The magnetic structure of the outer tube 302 forms a closed magnetic circuit with the stator excitation winding, generating a rotating magnetic field when energized to drive the rotor shaft 3 to rotate, thereby outputting power. The inner tube 301 has an independent axial fluid channel for conveying gas or low-viscosity fluid media. The magnetic fluid sealing structure, as the core rotary sealing technology, is set between the outer tube 302 and the inner wall of the end cap. It utilizes the magnetic field to form a non-contact sealing film of magnetic fluid in the gap, achieving low-wear dynamic sealing under high-speed rotation. At the same time, an O-ring and a labyrinth ring 6 are added between the inner wall of the end cap and the outer tube 302 as an auxiliary waterproof structure to further prevent external water or liquid from entering the motor. This embodiment achieves safe transmission of the medium and reliable sealing under all operating conditions by using a physical structure design with functional decoupling (power is driven by the outer magnetic circuit and the medium is independently transported by the inner channel) and multi-level sealing coordination (magnetic fluid main seal + auxiliary waterproofing). It is particularly suitable for application scenarios with high requirements for integration and sealing performance.

[0051] As attached Figure 1 To be continued Figure 3 As shown:

[0052] Example 2: This invention provides a pneumatic-fluid hollow rotor motor. The hollow rotor motor is configured to simultaneously achieve power output and media transmission. The motor structure includes a housing 1, a stator assembly 2, a rotor shaft core 3, an end cover assembly 4, a multi-stage composite sealing structure, and a dynamic control component. The housing 1 is a one-piece cast aluminum alloy structure with a positioning groove on its inner wall for fixing the stator assembly 2 and sealing flanges at both ends for installing the end cover assembly 4. The stator assembly 2 is fixed to the inner wall of the housing 1 and includes a stator core and an excitation winding wound on the stator core. The rotor shaft core 3 is located at the central rotation axis position inside the housing 1 and is a double-layer sleeve structure. The hollow rotor structure includes an inner tube 301 and an outer tube 302. The inner tube 301 has a fluid channel extending through it along the axial direction. The outer tube 302 is fitted outside the inner tube 301 and has a magnetic structure on its outer wall. This magnetic structure forms a closed magnetic circuit with the excitation winding of the stator assembly 2. The dynamic control component includes an embedded sensor group 7 and an active control module. The embedded sensor group 7 includes a miniature pressure sensor, a temperature sensor, and a viscosity sensor integrated into the inner wall of the inner tube 301, and is used to monitor the medium pressure (range 0-15MPa), temperature (-40℃~200℃), and viscosity (0.5-1000cP) in the fluid channel in real time.

[0053] 1. In one embodiment of the present invention, the active control module is an adjustable guide vane 8 disposed in the fluid channel, used to dynamically adjust the flow cross-sectional area or flow direction of the fluid according to the sensor signal.

[0054] 2. In one embodiment of the present invention, a pressure compensation diaphragm 9 is further provided on the inner side of the inner tube 301, and the pressure compensation diaphragm 9 is located between the inlet end of the fluid channel and the active control module.

[0055] 3. In one embodiment of the present invention, the pressure compensation diaphragm 9 is made of shape memory alloy material, and its deformation is automatically adjusted with the change of medium pressure to maintain the sealing contact pressure and compensate for the deformation of the shaft core caused by the pressure difference.

[0056] Working Principle: Compared to Embodiment 1, Embodiment 2, while retaining the basic functional integration and sealing design of the double-layer sleeve-type hollow rotor structure and magnetohydrodynamic sealing structure, further integrates an intelligent sensing and dynamic control system. This system uses an embedded sensor group 7 to monitor the pressure, temperature, and gas-fluid viscosity of the medium within the fluid channel in real time. Based on the sensor signals, the adjustable guide vanes 8 in the active control module dynamically adjust the fluid flow cross-sectional area or direction, achieving precise control of the medium delivery parameters. Simultaneously, the shape memory alloy pressure compensation diaphragm 9, located inside the inner tube 301, adaptively adjusts its deformation according to the medium pressure, maintaining the sealing contact pressure under high pressure differentials while compensating for minor deformation of the shaft core caused by the internal and external pressure differences, ensuring rotational stability and sealing reliability. This embodiment solves the problems of lack of dynamic control capability in the medium delivery process, insufficient sealing stability under high pressure differentials, and the influence of shaft core deformation in Embodiment 1, significantly improving the coordination accuracy and system adaptability of power output and medium delivery under complex working conditions (such as high pressure, high viscosity, or variable parameter media).

[0057] The multi-mode control method for the pneumatic-fluid hollow rotor motor described in Embodiments 1 and 2 includes the following steps:

[0058] S1: The pressure, temperature and viscosity data in the fluid channel are collected in real time through the embedded sensor group 7, and combined with the current feedback signal of the stator winding to determine the current medium characteristics and load requirements.

[0059] S2: Automatically switch between the following modes based on the state perception results:

[0060] Power output mode: Only the excitation winding of stator assembly 2 is activated to drive rotor shaft 3 to rotate. At this time, the fluid channel remains closed and the motor structure is used as a conventional power source.

[0061] Auxiliary cooling mode: Only the excitation winding of stator assembly 2 is activated to drive rotor shaft 3 to rotate at high speed. At this time, the fluid channel maintains a low flow rate and cooling airflow is introduced for active cooling of the motor structure under high-speed operation.

[0062] Fluid transport mode: The inlet of the fluid channel is connected to the medium source and the outlet is connected to the actuator through an external pipeline. The stator assembly 2 drives the rotor shaft 3 to rotate at a preset speed, and the medium is transported in a directional manner through the fluid channel.

[0063] Composite Coordination Mode: Simultaneously activates power output and fluid delivery functions, and adjusts the current parameters (such as frequency and amplitude) of the excitation winding through the controller to precisely match the power requirements of the actuator with the fluid flow requirements;

[0064] S3: Based on real-time sensor data, the stator winding power supply parameters (voltage / frequency), the position of the adjustable guide vane 8, and the preload of the pressure compensation diaphragm 9 are continuously corrected through PID control algorithm or fuzzy logic algorithm to ensure efficient and stable operation under all working conditions.

[0065] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pneumatic-fluid hollow rotor motor, wherein the hollow rotor motor is configured as a motor structure for simultaneously realizing power output and medium transmission, the motor structure comprising a housing (1), a stator assembly (2), a rotor shaft (3), an end cover assembly (4), a multi-stage composite sealing structure, and a dynamic control assembly, characterized in that: The housing (1) is an integral aluminum alloy casting structure. Its inner wall is provided with a positioning groove for fixing the stator assembly (2), and both ends are provided with sealing flanges for installing the end cover assembly (4). The stator assembly (2) is fixed to the inner wall of the housing (1), and includes a stator core and an excitation winding wound on the stator core; The rotor core (3) is located at the rotation axis position in the center of the housing (1). The rotor core (3) is a hollow rotor with a double-layer sleeve structure, which includes an inner tube (301) and an outer tube (302). The inner tube (301) has a fluid channel running through it along the axial direction. The outer tube (302) is fitted on the outside of the inner tube (301). Its outer wall is provided with a magnetic structure. The magnetic structure forms a closed magnetic circuit with the excitation winding of the stator assembly (2). The end cap assembly (4) includes bearing seat end caps fixed to both ends of the housing (1) to support the rotation of the rotor shaft (3). The end cap assembly (4) integrates a high-precision ceramic bearing to reduce friction loss and improve corrosion resistance. The multi-stage composite sealing structure includes a radial rotary seal (5) located between the outer tube (302) of the rotor shaft core (3) and the inner wall of the end cap assembly (4); The dynamic control component includes an embedded sensor group (7) and an active control module. The embedded sensor group (7) includes a miniature pressure sensor, a temperature sensor and a viscosity sensor integrated into the inner wall of the inner tube (301).

2. The pneumatic-fluid hollow rotor motor according to claim 1, characterized in that: The radial rotary seal (5) is a magnetohydrodynamic seal structure.

3. The pneumatic-fluid hollow rotor motor according to claim 1, characterized in that: The multi-stage composite sealing structure also includes a labyrinth ring (6) disposed between the inner wall of the end cap and the outer tube (302).

4. The pneumatic-fluid hollow rotor motor according to claim 1, characterized in that: The active control module is an adjustable guide vane (8) set in the fluid channel, used to dynamically adjust the flow cross-sectional area or flow direction of the fluid according to the sensor signal.

5. A pneumatic-fluid hollow rotor motor according to claim 1, characterized in that: The inner tube (301) is also provided with a pressure compensation diaphragm (9), which is located between the inlet end of the fluid channel and the active control module.

6. A pneumatic-fluid hollow rotor motor according to claim 1, characterized in that: The pressure compensation diaphragm (9) is made of shape memory alloy material.

7. A multi-mode control method for implementing the pneumatic-fluid hollow rotor motor according to any one of claims 1-6, characterized in that: Includes the following steps: S1: The pressure, temperature and viscosity data in the fluid channel are collected in real time by the embedded sensor group (7), and combined with the current feedback signal of the stator winding, the current medium characteristics and load requirements are determined. S2: Automatically switch between the following modes based on the state perception results: Power output mode: Only the excitation winding of the stator assembly (2) is activated to drive the rotor shaft (3) to rotate. At this time, the fluid channel remains closed and the motor structure is used as a conventional power source. Auxiliary cooling mode: Only the excitation winding of the stator assembly (2) is activated to drive the rotor shaft (3) to rotate at high speed. At this time, the fluid channel is kept in a low flow state and cooling airflow is introduced for active cooling of the motor structure under high-speed operation. Fluid transport mode: The inlet of the fluid channel is connected to the medium source and the outlet is connected to the actuator through an external pipeline. The stator assembly (2) drives the rotor shaft (3) to rotate at a preset speed, and the medium is transported in a directional manner through the fluid channel. Composite Coordination Mode: Simultaneously activates power output and fluid delivery functions, and adjusts the current parameters of the excitation winding through the controller to match the power requirements and medium flow requirements of the actuator; S3: Based on real-time sensor data, the stator winding power supply parameters, the position of the adjustable guide vane (8), and the preload of the pressure compensation diaphragm (9) are continuously corrected through PID control algorithm or fuzzy logic algorithm to ensure stable operation under all working conditions.

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