Magnetic suspension bearing controller

Abstract

The utility model relates to a magnetic suspension bearing controller. The magnetic suspension bearing controller comprises an in-board auxiliary power supply module, a main control module, a driving module, an acquisition processing module and a communication module, wherein the in-board auxiliary power supply module is respectively connected with the main control module, the driving module, the acquisition processing module and the communication module; the main control module is respectively connected with the driving module, the acquisition processing module and the communication module; the driving module is composed of a plurality of mutually independent driving sub-modules, so that the technical problems of poor system anti-interference capability, difficulty in maintenance and difficulty in team cooperation development caused by complex hardware architecture, low modularization degree and high coupling degree of an existing magnetic suspension bearing controller are solved; the technical effects that the magnetic suspension bearing controller is simpler in hardware topological structure, stable in work, easy to maintain and high in anti-interference capability are achieved.

Description

Technical Field

[0001] This application relates to the technical field of magnetic levitation bearings, and particularly to a magnetic levitation bearing controller. Background Art

[0002] A magnetic levitation bearing controller is a control device that uses the principle of magnetic force to levitate bearings. Traditional bearings support and levitate the rotor through friction, and there are problems of friction loss and wear. The magnetic levitation bearing controller, however, uses electromagnetic force to achieve the support and levitation of the bearing for the rotor, thereby reducing energy loss and friction and wear.

[0003] Existing magnetic levitation bearing controllers do not reach a good modular level in hardware design, and the coupling degree between functional modules is too high. This not only increases the complexity of the design, but also is not conducive to later maintenance and upgrading. The current product's circuit topology is relatively complex, which not only increases the design difficulty, but also raises the production cost and may affect the stability and reliability of the system. Due to the high coupling degree between functional modules, the system is prone to interference. Especially in an industrial environment, this interference may cause the system performance to decline or even fail. The complex hardware architecture and high coupling degree make it more difficult for multi-team collaborative development. Any problem with a module may cause the entire system to malfunction. Once a module fails or needs to be replaced, due to the strong correlation between modules, large-scale adjustments or replacements are often required, increasing the maintenance cost and downtime.

[0004] In view of the above problems, no effective solution has been proposed yet. Summary of the Utility Model

[0005] Embodiments of this application provide a magnetic levitation bearing controller to at least solve the technical problems that the existing magnetic levitation bearing controller has a complex hardware architecture, low modularization degree, high coupling degree, resulting in poor anti-interference ability of the system, difficult maintenance and not easy for team collaborative development.

[0006] According to one aspect of the embodiments of this application, a magnetic levitation bearing controller is provided, including: an in-board auxiliary power supply module, a main control module, a drive module, a collection and processing module, and a communication module; wherein: the in-board auxiliary power supply module is respectively connected to the main control module, the drive module, the collection and processing module, and the communication module; the main control module is respectively connected to the drive module, the collection and processing module, and the communication module; the drive module is composed of multiple independent drive sub-modules.

[0007] Optionally, it further includes: a power input interface and protection module, an AC power module, a DC power module, and a power switching module; wherein: the power input interface and protection module are respectively connected to the AC power module and the DC power module; the power switching module is respectively connected to the AC power module, the DC power module, and the in-board auxiliary power module.

[0008] Optionally, the drive sub-module includes: two drive circuits with the same topological structure; wherein, the drive circuit is composed of a first drive circuit, a second drive circuit, and a third drive circuit.

[0009] Optionally, the first driving circuit includes: a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first diode, a second diode, a third diode, a fourth diode, a first triode, and a first driving chip; wherein: a first pin of the first driving chip is respectively connected to a second end of the first resistor, a first end of the third resistor, and a first end of the first capacitor, and a first end of the first resistor serves as a first input end of the first driving circuit; a second pin of the first driving chip is not used; a third pin of the first driving chip is respectively connected to a second end of the second resistor, a second end of the third resistor, and a second end of the first capacitor, and a first end of the second resistor serves as a second input end of the first driving circuit; a fourth pin of the first driving chip is respectively connected to a second end of the second capacitor, a second end of the third capacitor, a second end of the fourth capacitor, a collector of the first triode, a positive electrode of the fourth diode, a second end of the eighth resistor, and a second end of the fifth capacitor, and a common end formed after connection serves as a second output end of the first driving circuit; a fifth pin of the first driving chip is respectively connected to a first end of the sixth resistor and a first end of the seventh resistor, and a common end formed after a second end of the sixth resistor is respectively connected to an emitter of the first triode, a positive electrode of the second diode, a negative electrode of the third diode, a negative electrode of the fourth diode, a first end of the eighth resistor, and a first end of the fifth capacitor serves as a first output end of the first driving circuit; a sixth pin of the first driving chip is respectively connected to a first end of the second capacitor, a first end of the third capacitor, a first end of the fourth capacitor, a negative electrode of the first diode, a first end of the fourth resistor, and a first end of the fifth resistor, a negative electrode of the first diode is respectively connected to a second end of the fourth resistor and a second end of the fifth resistor, a positive electrode of the second diode is connected to a negative electrode of the third diode, and a positive electrode of the first diode serves as a third input end of the first driving circuit.

[0010] Optionally, the fourth diode is a zener diode.

[0011] Optionally, the first triode is a PNP type triode.

[0012] Optionally, the second driving circuit includes: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a fifth diode, a sixth diode, a seventh diode, a second triode, and a second driving chip; wherein: the first pin of the second driving chip is respectively connected to the second end of the ninth resistor, the first end of the eleventh resistor, and the first end of the sixth capacitor, and the first end of the ninth resistor serves as the first input terminal of the second driving circuit; the second pin of the second driving chip is not used; the third pin of the second driving chip is respectively connected to the second end of the tenth resistor, the second end of the eleventh resistor, and the second end of the sixth capacitor, and the first end of the tenth resistor serves as the second input terminal of the second driving circuit; the fourth pin of the second driving chip is respectively connected to the second end of the seventh capacitor, the second end of the eighth capacitor, the second end of the ninth capacitor, the collector of the second triode, the positive electrode of the seventh diode, the second end of the fourteenth resistor, and the second end of the tenth capacitor, and the common terminal formed after connection serves as the second output terminal of the second driving circuit; the fifth pin of the second driving chip is respectively connected to the first end of the twelfth resistor and the first end of the thirteenth resistor, and the second end of the twelfth resistor is respectively connected to the emitter of the second triode, the positive electrode of the fifth diode, the negative electrode of the sixth diode, the negative electrode of the seventh diode, the first end of the fourteenth resistor, and the first end of the tenth capacitor, and the common terminal formed after connection serves as the first output terminal of the second driving circuit; the sixth pin of the second driving chip is respectively connected to the first end of the seventh capacitor, the first end of the eighth capacitor, the first end of the ninth capacitor, and the negative electrode of the fifth diode, and the common terminal formed after connection serves as the third input terminal of the second driving circuit, the positive electrode of the fifth diode is connected to the negative electrode of the sixth diode, and the positive electrode of the sixth diode is connected to the second end of the thirteenth resistor.

[0013] Optionally, the seventh diode is a zener diode.

[0014] Optionally, the second triode is a PNP type triode.

[0015] Optionally, the third driving circuit includes: a first MOS transistor, a second MOS transistor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, an eighth diode, and a ninth diode; wherein: the gate of the first MOS transistor serves as the first input terminal of the third driving circuit, and the first input terminal of the third driving circuit is used to connect to the first output terminal of the first driving circuit. The common terminal after connecting the source of the first MOS transistor to the cathode of the eighth diode serves as the second input terminal of the third driving circuit, and the second input terminal of the third driving circuit is used to connect to the second output terminal of the first driving circuit. The drain of the first MOS transistor is respectively connected to the first terminal of the eleventh capacitor, the first terminal of the twelfth capacitor, the first terminal of the thirteenth capacitor, and the cathode of the ninth diode; the gate of the second MOS transistor serves as the third input terminal of the third driving circuit, and the third input terminal of the third driving circuit is used to connect to the first output terminal of the second driving circuit. The common terminal after connecting the source of the first MOS transistor to the anode of the eighth diode, the second terminal of the eleventh capacitor, the second terminal of the twelfth capacitor, and the second terminal of the thirteenth capacitor serves as the fourth input terminal of the third driving circuit, and the fourth input terminal of the third driving circuit is used to connect to the second output terminal of the second driving circuit. The drain of the second MOS transistor is connected to the anode of the ninth diode.

[0016] In the embodiment of the present application, the magnetic levitation bearing controller mainly consists of an in-board auxiliary power supply module, a main control module, a driving module, a data acquisition and processing module, and a communication module. Each module is independent of each other, reducing the dependence between different functional components, facilitating separate development, testing, and maintenance. At the same time, when a certain module fails, it can be quickly located and replaced without affecting the normal operation of other parts, reducing the maintenance cost. Among them, the in-board auxiliary power supply module is respectively connected to the main control module, the driving module, the data acquisition and processing module, and the communication module; the main control module is respectively connected to the driving module, the data acquisition and processing module, and the communication module; the driving module is composed of multiple independent driving sub-modules. The design of independent driving sub-modules reduces the mutual interference between signals, thereby solving the technical problems of the existing magnetic levitation bearing controller, such as complex hardware architecture, low modularity, and high coupling degree, resulting in poor anti-interference ability of the system, difficult maintenance, and not easy to develop in a team collaboration. It achieves the technical effects of a simpler hardware topology structure of the magnetic levitation bearing controller, stable operation, easy maintenance, and strong anti-interference ability. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of a magnetic levitation bearing controller provided by an embodiment of the present application;

[0019] Figure 2 Schematic diagram of another magnetic levitation bearing controller provided by an embodiment of the present application;

[0020] Figure 3 Circuit topology diagram of the first drive circuit provided by an embodiment of the present application;

[0021] Figure 4 Circuit topology diagram of the second drive circuit provided by an embodiment of the present application;

[0022] Figure 5 Circuit topology diagram of the third drive circuit provided by an embodiment of the present application. Detailed implementation manners

[0023] The following will describe the embodiments of the present application in more detail with reference to the accompanying drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the embodiments of the present application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided to more thoroughly and completely understand the embodiments of the present application. It should be understood that the accompanying drawings and embodiments of the present application are only for exemplary purposes and are not used to limit the protection scope of the present application.

[0024] According to one aspect of the embodiments of the present application, a magnetic levitation bearing controller is provided. Figure 1 Schematic diagram of a magnetic levitation bearing controller provided by an embodiment of the present application, as Figure 1 shown, the magnetic levitation bearing controller includes: an in-board auxiliary power supply module 11, a main control module 12, a drive module 13, a collection and processing module 14, and a communication module 15; where:

[0025] The in-board auxiliary power supply module 11 is respectively connected to the main control module 12, the drive module 13, the collection and processing module 14, and the communication module 15;

[0026] The main control module 12 is respectively connected to the drive module 13, the collection and processing module 14, and the communication module 15;

[0027] The drive module 13 is composed of a plurality of independent drive sub-modules.

[0028] The auxiliary power supply module 11 inside the board provides stable power support for the entire system, ensuring that each module can work reliably. This module is connected to all other modules to ensure that each part can obtain the required power supply.

[0029] The main control module 12, as the brain of the system, is responsible for receiving data from the acquisition and processing module and sending control signals to the drive module. In addition, it is also responsible for data exchange with external devices or systems through the communication module. The main control module is also connected to all other modules to achieve efficient data transmission.

[0030] The drive module 13 consists of multiple independent drive sub-modules, and each sub-module is responsible for controlling one or more magnetic levitation bearings. Such a design reduces the impact of a single failure on the entire system and improves the redundancy and reliability of the system.

[0031] Optionally, the number of the above drive sub-modules includes but is not limited to 5. The drive module 13 adopted in this application is composed of each sub-module, which is different from the drive modules on the market integrated into one module. Since in practical applications, the drive module is relatively easy to be damaged, therefore, adopting the solution of this application is beneficial to the replacement and maintenance of the drive module in the later stage, reduces the after-sales maintenance cost and shortens the fault handling time.

[0032] The acquisition and processing module 14 is responsible for collecting data from sensors, performing preliminary processing on it, and then transmitting the processed information to the main control module.

[0033] The communication module 15 is used to realize the information interaction between the controller and the outside world. Whether it is communicating with other devices or remote monitoring, it is all completed through this module.

[0034] In the embodiment of this application, by dividing the system into several independent modules, the dependence between different functional components is reduced, which is convenient for independent development, testing and maintenance, thus improving the overall flexibility and scalability of the system. The interface definitions between modules are clear, reducing the situation that other modules need to be modified due to the change of one module, and reducing the complexity of system design. The design of independent drive sub-modules reduces the mutual interference between signals and improves the stability and reliability of the system. When a certain module fails, it can be quickly located and replaced without affecting the normal operation of other parts, reducing the maintenance cost. The clear module division is conducive to team members focusing on their respective responsibilities, reducing the communication cost during the development process, and accelerating the product R & D cycle.

[0035] Figure 2 Another schematic diagram of the magnetic levitation bearing controller provided for the embodiment of this application, as Figure 2As shown, the magnetic levitation bearing controller further includes: a power input interface and protection module 16, an AC power module 17, a DC power module 18, and a power switching module 19; wherein:

[0036] The power input interface and protection module 16 are respectively connected to the AC power module 17 and the DC power module 18;

[0037] The power switching module 19 is respectively connected to the AC power module 17, the DC power module 18, and the on-board auxiliary power module 11.

[0038] The power input interface and protection module 16 is used to receive power input from the outside and includes necessary protection mechanisms such as overcurrent, overvoltage, short-circuit and other protection measures to prevent damage to the internal circuit caused by abnormal external power. This module is connected to the AC power module and the DC power module.

[0039] The AC power module 17 provides AC power conversion function, which can convert the input AC power into a specific form of alternating current suitable for internal use of the system, or provide direct current for the system after rectification.

[0040] The DC power module 18 is used to convert the externally provided DC power into a voltage level suitable for the internal circuit of the system and ensure the stability and reliability of the output voltage.

[0041] The power switching module 19 is used to perform intelligent switching between AC power and DC power to ensure that the system can continue to operate seamlessly regardless of which power source is available. In addition, it is also connected to the on-board auxiliary power module to provide uninterrupted power support for the system when necessary.

[0042] The compatibility of AC and DC power supplies is achieved through a power switching switch. Each module is independent of each other, with a high degree of modular design and rich functions, suitable for various application scenarios.

[0043] In the embodiments of the present application, by adding a power input interface and protection module, the system can automatically cut off or limit the current in the face of power fluctuations or abnormal situations, avoid damage to internal components, and improve the safety of the system. The presence of the power switching module enables the system to use either AC power or DC power, enhancing the working flexibility of the system and being applicable to more different application scenarios. The introduction of the AC power module and the DC power module simplifies power management, can automatically adjust the output according to system requirements, and can keep the system running stably without manual intervention. The power switching module can smoothly switch between the two power sources, and even if one power source fails, it can quickly switch to the other power source, ensuring the continuous operation ability of the system.

[0044] Optionally, the driving sub-module includes: two driving circuits with the same topological structure; wherein, the driving circuit is composed of a first driving circuit, a second driving circuit and a third driving circuit.

[0045] The topological structure of the second driving circuit is exactly the same as that of the first one, which means that the number and type of all components are the same, and the connection method is also the same. The two driving circuits work independently to achieve independent control of the radial bearing and the axial bearing.

[0046] In the embodiment of the present application, through the cooperation of the first driving circuit and the second driving circuit, more precise control can be achieved. The first driving circuit is responsible for generating the initial driving signal, and the second driving circuit is responsible for fine-tuning to ensure the accurate position of the magnetic levitation bearing. The design of the third driving circuit can effectively filter out noise and provide a stable current output through the combination of MOS transistors and capacitors, enhancing the stability and anti-interference ability of the system. Since the topological structures of the two driving circuits are the same, it makes maintenance and troubleshooting simpler, only need to check and replace according to the known circuit structure. The unified circuit design makes future system upgrades and function expansions more convenient, without the need to redesign the entire driving module, only need to replace or add corresponding components.

[0047] Figure 3 The circuit topology diagram of the first driving circuit provided for the embodiment of the present application is as Figure 3 shown, the first driving circuit includes: a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first triode V1 and a first driving chip U1; wherein:

[0048] The first pin of the first driving chip U1 is respectively connected to the second end of the first resistor R1, the first end of the third resistor R3, and the first end of the first capacitor C1. The first end of the first resistor R1 serves as the first input terminal VIN1-1 of the first driving circuit; the second pin of the first driving chip U1 is not used; the third pin of the first driving chip U1 is respectively connected to the second end of the second resistor R2, the second end of the third resistor R3, and the second end of the first capacitor C1. The first end of the second resistor R2 serves as the second input terminal VIN1-2 of the first driving circuit; the fourth pin of the first driving chip U1 is respectively connected to the second end of the second capacitor C2, the second end of the third capacitor C3, the second end of the fourth capacitor C4, the collector of the first triode V1, the positive electrode of the fourth diode D4, the second end of the eighth resistor R8, and the second end of the fifth capacitor C5. The common terminal formed after connection serves as the second output terminal VOUT1-2 of the first driving circuit; the fifth pin of the first driving chip U1 is respectively connected to the first end of the sixth resistor R6 and the first end of the seventh resistor R7. The second end of the sixth resistor R6 is respectively connected to the emitter of the first triode V1, the positive electrode of the second diode D2, the negative electrode of the third diode D3, the negative electrode of the fourth diode D4, the first end of the eighth resistor R8, and the first end of the fifth capacitor C5. The common terminal formed after connection serves as the first output terminal VOUT1-1 of the first driving circuit; the sixth pin of the first driving chip U1 is respectively connected to the first end of the second capacitor C2, the first end of the third capacitor C3, the first end of the fourth capacitor C4, the negative electrode of the first diode D1, the first end of the fourth resistor R4, and the first end of the fifth resistor R5. The negative electrode of the first diode D1 is respectively connected to the second end of the fourth resistor R4 and the second end of the fifth resistor R5. The positive electrode of the second diode D2 is connected to the negative electrode of the third diode D3. The positive electrode of the first diode D1 serves as the third input terminal VIN1-3 of the first driving circuit. Further, the fourth diode D4 is a voltage-regulating diode. The first triode V1 is a PNP type triode.

[0049] Further, the first input terminal VIN1-1 of the first driving circuit is used to connect a power supply with a voltage of 5V. The second input terminal VIN1-2 of the first driving circuit is used to connect a Pulse Width Modulation (PWM) signal generator, and this PWM signal generator is used to generate a driving signal. The third input terminal VIN1-3 of the first driving circuit is used to connect a power supply with a voltage of 15V.

[0050] The first driving chip U1 is the core component of the first driving circuit and is used to receive input signals and generate corresponding driving signals. It has at least six pins, among which:

[0051] The first pin PIN1 (anode of the light-emitting diode) is respectively connected to the second end of the first resistor R1, the first end of the third resistor R3, and the first end of the first capacitor C1. The first end of R1 serves as the first input terminal VIN1-1 of the first drive circuit.

[0052] The second pin PIN2 (unused pin, no connection required) is not used.

[0053] The third pin PIN3 (cathode of the light-emitting diode) is respectively connected to the second end of the second resistor R2, the second end of the third resistor R3, and the second end of the first capacitor C1. The first end of R2 serves as the second input terminal VIN1-2 of the first drive circuit.

[0054] The fourth pin PIN4 (negative pole of the power supply) is respectively connected to the second ends of the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the collector of the first triode Q1, the positive pole of the fourth diode D4, the second end of the eighth resistor R8, and the second end of the fifth capacitor C5. The common end formed is used as the second output terminal VOUT1-2 of the first drive circuit.

[0055] The fifth pin PIN5 (drive signal output port): is respectively connected to the first ends of the sixth resistor R6 and the seventh resistor R7. The second end of R6 is respectively connected to the emitter of the first triode Q1, the positive pole of the second diode D2, the negative pole of the third diode D3, the first end of the eighth resistor R8, and the first end of the fifth capacitor C5. The common end formed is used as the first output terminal VOUT1-1 of the first drive circuit.

[0056] The sixth pin PIN6 (positive pole of the power supply) is respectively connected to the first ends of the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the negative pole of the first diode D1, the first end of the fifth resistor R5, and the first end of the sixth resistor R6. The negative pole of D1 is respectively connected to the second ends of R4 and R5. The positive pole of D2 is connected to the negative pole of D3. The positive pole of D1 serves as the third input terminal VIN1-3 of the first drive circuit.

[0057] The fourth diode D4 serves as a voltage-regulating diode to protect the circuit from excessive voltage surges.

[0058] The first triode T1 serves as a PNP-type triode to amplify signals or switch current paths.

[0059] In the embodiments of the present application, a filtering network composed of a first driving chip U1 and multiple resistors and capacitors can effectively filter out the noise in the input signal, improving the purity and stability of the signal. The fourth diode D4, as a voltage stabilizing diode, can provide additional safety protection when the power supply voltage is too high to prevent overvoltage from damaging the circuit. The first triode V1 is selected as a PNP type, enabling the circuit to efficiently control the direction and magnitude of the current flow and effectively drive the magnetic levitation bearing.

[0060] Figure 4 The circuit topology diagram of the second driving circuit provided by the embodiments of the present application is as Figure 4 shown. The second driving circuit includes: a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, a fifth diode D5, a sixth diode D6, a seventh diode D7, a second triode V2, and a second driving chip U2; wherein:

[0061] The first pin of the second driving chip U2 is respectively connected to the second end of the ninth resistor R9, the first end of the eleventh resistor R11, and the first end of the sixth capacitor C6. The first end of the ninth resistor R9 serves as the first input terminal VIN2-1 of the second driving circuit; the second pin of the second driving chip U2 is not used; the third pin of the second driving chip U2 is respectively connected to the second end of the tenth resistor R10, the second end of the eleventh resistor R11, and the second end of the sixth capacitor C6. The first end of the tenth resistor R10 serves as the second input terminal VIN2-2 of the second driving circuit; the fourth pin of the second driving chip U2 is respectively connected to the second end of the seventh capacitor C7, the second end of the eighth capacitor C8, the second end of the ninth capacitor C9, the collector of the second triode V2, the positive electrode of the seventh diode D7, the second end of the fourteenth resistor R14, and the second end of the tenth capacitor C10. The common terminal formed after connection serves as the second output terminal VOUT2-2 of the second driving circuit; the fifth pin of the second driving chip U2 is respectively connected to the first end of the twelfth resistor R12 and the first end of the thirteenth resistor R13. The second end of the twelfth resistor R12 is respectively connected to the emitter of the second triode V2, the positive electrode of the fifth diode D5, the negative electrode of the sixth diode D6, the negative electrode of the seventh diode D7, the first end of the fourteenth resistor R14, and the first end of the tenth capacitor C10. The common terminal formed after connection serves as the first output terminal VOUT2-1 of the second driving circuit; the sixth pin of the second driving chip U2 is respectively connected to the first end of the seventh capacitor C7, the first end of the eighth capacitor C8, the first end of the ninth capacitor C9, and the negative electrode of the fifth diode D5. The common terminal formed after connection serves as the third input terminal VIN2-3 of the second driving circuit. The positive electrode of the fifth diode D5 is connected to the negative electrode of the sixth diode D6, and the positive electrode of the sixth diode D6 is connected to the second end of the thirteenth resistor R13. The seventh diode D7 is a voltage stabilizing diode. The second triode V2 is a PNP type triode.

[0062] Furthermore, the first input terminal VIN2-1 of the second driving circuit is used to connect a power supply with a voltage of 5V. The second input terminal VIN2-2 of the second driving circuit is used to connect a PWM signal generator, which is used to generate a driving signal. The third input terminal VIN2-3 of the second driving circuit is used to connect a power supply with a voltage of 15V.

[0063] The second driving chip U2 is the core component of the second driving circuit and is used to receive input signals and generate corresponding driving signals. It has at least six pins, among which:

[0064] The first pin PIN1 (the anode of the light-emitting diode) is respectively connected to the second end of the ninth resistor R9, the first end of the eleventh resistor R11, and the first end of the sixth capacitor C6. The first end of R9 serves as the first input terminal VIN2-1 of the second drive circuit.

[0065] The second pin PIN2 (unused pin, no connection required) is not used.

[0066] The third pin PIN3 (the cathode of the light-emitting diode) is respectively connected to the second end of the tenth resistor R10, the second end of the eleventh resistor R11, and the second end of the sixth capacitor C6. The first end of R10 serves as the second input terminal VIN2-2 of the second drive circuit.

[0067] The fourth pin PIN4 (the negative pole of the power supply) is respectively connected to the second ends of the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, the collector of the second triode Q2, the positive pole of the seventh diode D7, the second end of the fourteenth resistor R14, and the second end of the tenth capacitor C10. The common end formed serves as the second output terminal VOUT2-2 of the second drive circuit.

[0068] The fifth pin PIN5 (the drive signal output port) is respectively connected to the first end of the twelfth resistor R12 and the first end of the thirteenth resistor R13. The second end of R12 is respectively connected to the emitter of the second triode Q2, the positive pole of the fifth diode D5, the negative pole of the sixth diode D6, the negative pole of the seventh diode D7, the first end of the fourteenth resistor R14, and the first end of the tenth capacitor C10. The common end formed serves as the first output terminal VOUT2-1 of the second drive circuit.

[0069] The sixth pin PIN6 (the positive pole of the power supply) is respectively connected to the first ends of the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, and the negative pole of the fifth diode D5. The common end formed serves as the third input terminal VIN2-3 of the second drive circuit. The positive pole of D5 is connected to the negative pole of D6.

[0070] The seventh diode D7 serves as a voltage-regulating diode to protect the circuit from excessive voltage surges.

[0071] The second triode Q2 serves as a PNP-type triode to amplify signals or switch current paths.

[0072] In the embodiments of the present application, a filter network composed of a second driving chip U2, multiple resistors, and capacitors can effectively filter out the noise in the input signal, improving the purity and stability of the signal. The seventh diode D7, as a voltage-regulating diode, can provide additional safety protection when the power supply voltage is too high, preventing overvoltage from damaging the circuit. The second triode V2 is selected as a PNP type, enabling the circuit to efficiently control the direction and magnitude of the current flow and effectively drive the magnetic levitation bearing.

[0073] Figure 5 The circuit topology diagram of the third driving circuit provided by the embodiments of the present application is as Figure 5 shown. The third driving circuit includes: a first MOS transistor Q1, a second MOS transistor Q2, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, an eighth diode D8, and a ninth diode D9; where:

[0074] The gate of the first MOS transistor Q1 serves as the first input terminal VIN3-1 of the third driving circuit. The first input terminal VIN3-1 of the third driving circuit is used to connect to the first output terminal VOUT1-1 of the first driving circuit. The common terminal after connecting the source of the first MOS transistor Q1 to the negative electrode of the eighth diode D8 serves as the second input terminal VIN3-2 of the third driving circuit. The second input terminal VIN3-2 of the third driving circuit is used to connect to the second output terminal VOUT1-2 of the first driving circuit. The drain of the first MOS transistor Q1 is respectively connected to the first end of the eleventh capacitor C11, the first end of the twelfth capacitor C12, the first end of the thirteenth capacitor C13, and the negative electrode of the ninth diode D9. The gate of the second MOS transistor Q2 serves as the third input terminal VIN3-3 of the third driving circuit. The third input terminal VIN3-3 of the third driving circuit is used to connect to the first output terminal VOUT2-1 of the second driving circuit. The common terminal after connecting the source of the first MOS transistor Q1 to the positive electrode of the eighth diode D8, the second end of the eleventh capacitor C11, the second end of the twelfth capacitor C12, and the second end of the thirteenth capacitor C13 serves as the fourth input terminal VIN3-4 of the third driving circuit. The fourth input terminal VIN3-4 of the third driving circuit is used to connect to the second output terminal VOUT2-2 of the second driving circuit. The drain of the second MOS transistor Q2 is connected to the positive electrode of the ninth diode D9.

[0075] Further, the common terminal after connecting the source of the first MOS transistor Q1 to the cathode of the eighth diode D8 serves as the first output terminal VOUT3-1 of the third driving circuit, and the first output terminal VOUT3-1 of the third driving circuit is used to connect to the radial bearing. The common terminal after connecting the drain of the second MOS transistor Q2 to the anode of the ninth diode D9 serves as the second output terminal VOUT3-2 of the third driving circuit, and the second output terminal VOUT3-2 of the third driving circuit is used to connect to the axial bearing.

[0076] The gate of the first MOS transistor Q1 is connected to the first output terminal VOUT1-1 of the first driving circuit, its source is respectively connected to the cathode of the eighth diode D8 and the second output terminal VOUT2-1 of the first driving circuit, and its drain is respectively connected to the first ends of the eleventh capacitor C11, the twelfth capacitor C12, the thirteenth capacitor C13 and the cathode of the ninth diode D9.

[0077] The gate of the second MOS transistor Q2 is connected to the first output terminal VOUT1-2 of the second driving circuit, its source is respectively connected to the anode of the eighth diode D8, the second ends of the eleventh capacitor C11, the twelfth capacitor C12, the thirteenth capacitor C13 and the second output terminal VOUT2-2 of the second driving circuit, and its drain is connected to the anode of the ninth diode D9.

[0078] The cathode of the eighth diode D8 is connected to the source of the first MOS transistor Q1, and the anode is connected to the source of the second MOS transistor Q2. The anode of the ninth diode D9 is connected to the drain of the first MOS transistor Q1, and the cathode is connected to the drain of the second MOS transistor Q2. For the eleventh capacitor C11, the twelfth capacitor C12, and the thirteenth capacitor C13, one end of these capacitors is connected to the drain of the first MOS transistor Q1, and the other end is connected to the source of the second MOS transistor Q2.

[0079] In the embodiments of the present application, through the design of the first MOS transistor Q1 and the second MOS transistor Q2, the third driving circuit can withstand a larger current load and improve the ability to drive the magnetic levitation bearing. The use of MOS transistors can effectively amplify signals, and due to their high input impedance characteristics, the attenuation during signal transmission can be reduced, improving the signal quality. The configuration of the eighth diode D8 and the ninth diode D9 can provide additional protection against reverse current flow, thereby protecting the circuit from reverse voltage. The addition of the eleventh capacitor C11, the twelfth capacitor C12, and the thirteenth capacitor C13 can filter and smooth the output voltage, reduce the ripple in the output signal, and improve the purity of the driving signal. The first MOS transistor Q1 and the second MOS transistor Q2 are respectively controlled by the first driving circuit and the second driving circuit, simplifying the control logic and making the circuit easier to implement and maintain.

[0080] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding interpretations of the spatial relative descriptions used herein will be made accordingly.

[0081] In addition, it should be noted that the use of terms such as "first", "second" etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present application.

[0082] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A magnetic bearing controller, characterized in that: include: The board includes auxiliary power supply module, main control module, drive module, acquisition processing module and communication module; among them: The on-board auxiliary power supply module is respectively connected to the main control module, the driving module, the acquisition and processing module and the communication module; The main control module is connected to the driving module, the acquisition and processing module, and the communication module respectively; The driving module is composed of a plurality of mutually independent driving sub-modules.

2. The magnetic bearing controller according to claim 1, characterized in that: Also includes: Power input interface and protection module, AC power module, DC power module, power switching module; among which: The power input interface and the protection module are connected to the AC power module and the DC power module respectively; The power switching module is connected to the AC power module, the DC power module and the on-board auxiliary power module respectively.

3. The magnetic bearing controller according to claim 1, characterized in that: The driving submodule comprises: two driving circuits with the same topological structure; wherein the driving circuit is composed of a first driving circuit, a second driving circuit and a third driving circuit.

4. The magnetic bearing controller according to claim 3, characterized in that: The first driving circuit includes: a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first diode, a second diode, a third diode, a fourth diode, a first triode and a first driving chip; wherein: The first pin of the first driving chip is respectively connected to the second end of the first resistor, the first end of the third resistor and the first end of the first capacitor, and the first end of the first resistor serves as the first input end of the first driving circuit; The second pin of the first driver chip is not used; The third pin of the first driving chip is respectively connected to the second end of the second resistor, the second end of the third resistor and the second end of the first capacitor, and the first end of the second resistor serves as the second input end of the first driving circuit; The fourth pin of the first driving chip is respectively connected to the second end of the second capacitor, the second end of the third capacitor, the second end of the fourth capacitor, the collector of the first transistor, the anode of the fourth diode, the second end of the eighth resistor and the second end of the fifth capacitor to form a common end as the second output end of the first driving circuit; The fifth pin of the first driving chip is respectively connected to the first end of the sixth resistor and the first end of the seventh resistor, and the second end of the sixth resistor is respectively connected to the emitter of the first transistor, the anode of the second diode, the cathode of the third diode, the cathode of the fourth diode, the first end of the eighth resistor and the first end of the fifth capacitor to form a common end as the first output end of the first driving circuit; The sixth pin of the first driving chip is respectively connected to the first end of the second capacitor, the first end of the third capacitor, the first end of the fourth capacitor, the cathode of the first diode, the first end of the fourth resistor, and the first end of the fifth resistor; the cathode of the first diode is respectively connected to the second end of the fourth resistor and the second end of the fifth resistor; the anode of the second diode is connected to the cathode of the third diode; and the anode of the first diode serves as the third input end of the first driving circuit.

5. The magnetic bearing controller according to claim 4, characterized in that: The fourth diode is a voltage regulator diode.

6. The magnetic bearing controller according to claim 4, characterized in that: The first transistor is a PNP transistor.

7. The magnetic bearing controller according to claim 3, characterized in that: The second driving circuit includes: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a fifth diode, a sixth diode, a seventh diode, a second triode and a second driving chip; wherein: The first pin of the second driving chip is respectively connected to the second end of the ninth resistor, the first end of the eleventh resistor and the first end of the sixth capacitor, and the first end of the ninth resistor serves as the first input end of the second driving circuit; The second pin of the second driver chip is not used; The third pin of the second driving chip is respectively connected to the second end of the tenth resistor, the second end of the eleventh resistor and the second end of the sixth capacitor, and the first end of the tenth resistor serves as the second input end of the second driving circuit; The fourth pin of the second driving chip is respectively connected to the second end of the seventh capacitor, the second end of the eighth capacitor, the second end of the ninth capacitor, the collector of the second transistor, the anode of the seventh diode, the second end of the fourteenth resistor and the second end of the tenth capacitor to form a common end as the second output end of the second driving circuit; The fifth pin of the second driving chip is respectively connected to the first end of the twelfth resistor and the first end of the thirteenth resistor, and the second end of the twelfth resistor is respectively connected to the emitter of the second transistor, the anode of the fifth diode, the cathode of the sixth diode, the cathode of the seventh diode, the first end of the fourteenth resistor and the first end of the tenth capacitor to form a common end as the first output end of the second driving circuit; The sixth pin of the second driving chip is respectively connected to the first end of the seventh capacitor, the first end of the eighth capacitor, the first end of the ninth capacitor, and the cathode of the fifth diode to form a common end as the third input end of the second driving circuit, the anode of the fifth diode is connected to the cathode of the sixth diode, and the anode of the sixth diode is connected to the second end of the thirteenth resistor.

8. The magnetic bearing controller according to claim 7, characterized in that: The seventh diode is a voltage stabilizing diode.

9. The magnetic bearing controller according to claim 7, characterized in that: The second transistor is a PNP transistor.

10. The magnetic bearing controller according to claim 3, characterized in that: The third driving circuit comprises: a first MOS tube, a second MOS tube, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, an eighth diode and a ninth diode; wherein: The gate of the first MOS transistor serves as the first input end of the third driving circuit, the first input end of the third driving circuit is used to connect the first output end of the first driving circuit, the common end of the source of the first MOS transistor and the cathode of the eighth diode is used as the second input end of the third driving circuit, the second input end of the third driving circuit is used to connect the second output end of the first driving circuit, and the drain of the first MOS transistor is respectively connected to the first end of the eleventh capacitor, the first end of the twelfth capacitor, the first end of the thirteenth capacitor and the cathode of the ninth diode; The gate of the second MOS tube serves as the third input end of the third drive circuit, and the third input end of the third drive circuit is used to connect the first output end of the second drive circuit. The common end of the source of the first MOS tube connected with the anode of the eighth diode, the second end of the eleventh capacitor, the second end of the twelfth capacitor, and the second end of the thirteenth capacitor respectively serves as the fourth input end of the third drive circuit. The fourth input end of the third drive circuit is used to connect the second output end of the second drive circuit. The drain of the second MOS tube is connected with the anode of the ninth diode.

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