Fault detection method, device and equipment for rotary transformer and storage medium

Abstract

The embodiment of the invention provides a fault detection method and device for a rotary transformer, equipment and a storage medium, and relates to the technical field of motor control. The fault detection method for the rotary transformer provided by the embodiment of the invention comprises the following steps: acquiring a power supply voltage signal of the rotary transformer; performing fault detection according to the power supply voltage signal; if the voltage fluctuation of the power supply voltage signal is greater than or equal to a preset threshold value, entering a fault confirmation state; performing data processing on the power supply voltage signal, and performing fault detection again according to the processed power supply voltage signal; and if the voltage fluctuation of the processed power supply voltage signal is greater than or equal to a preset threshold value, outputting fault information of the rotary transformer. According to the fault detection method provided by the embodiment of the invention, the fault confirmation process is added after the power supply voltage signal is detected to be greater than the preset threshold value, so that the electric control system is prevented from misjudging the fluctuation of the power supply voltage signal as the fault of the rotary transformer, and the accuracy and reliability of fault detection are improved.

Description

Technical Field

[0001] The present invention relates to the field of motor control technology, and in particular to a method, device, equipment and storage medium for detecting a fault of a rotary transformer. Background Art

[0002] The resolver is a common position sensor used in motor control. The resolver accurately measures the position, speed and direction of rotation of the motor rotor, transmits these signals to the electronic control, and controls the motor using the software control algorithm. When the motor controller is just powered on, the position sensor supply voltage occasionally fluctuates and burrs in a small range, resulting in an erroneous report of a resolver fault. Summary of the invention

[0003] The embodiments of the present invention provide a method, an apparatus, a device and a storage medium for detecting a fault of a rotary transformer, which improve the accuracy and reliability of fault detection and the robustness of the rotary transformer.

[0004] In a first aspect, an embodiment of the present invention provides a method for detecting a fault of a rotary transformer, comprising:

[0005] Obtaining the power supply voltage signal of the rotary transformer;

[0006] Perform fault detection based on the supply voltage signal;

[0007] If the voltage fluctuation of the power supply voltage signal is greater than or equal to the preset threshold, the fault confirmation state is entered;

[0008] Performing data processing on the power supply voltage signal, and performing fault detection again according to the processed power supply voltage signal;

[0009] If the voltage fluctuation of the processed power supply voltage signal is greater than or equal to a preset threshold, the fault information of the rotary transformer is output.

[0010] Optionally, after entering the fault confirmation state, the process further includes:

[0011] Obtaining the number of times the power supply voltage is greater than a first threshold value or the excitation power supply voltage of the rotary transformer within a preset time period of entering the fault confirmation state;

[0012] When the number is greater than the second threshold or the excitation supply voltage is greater than the third threshold, the decoding chip of the rotary transformer is initialized.

[0013] Optionally, performing data processing on the supply voltage signal includes:

[0014] After the decoding chip is initialized, the power supply voltage signal is de-jittered.

[0015] Optionally, before obtaining the power supply voltage signal of the rotary transformer, the method further includes:

[0016] Power on the resolver and perform the resolver power-on self-test.

[0017] Optionally, after performing fault detection according to the supply voltage signal, the method further includes:

[0018] If the voltage fluctuation of the power supply voltage signal is less than the preset threshold, it is determined that the resolver has no fault.

[0019] Optionally, if the voltage fluctuation of the processed power supply voltage signal is less than a preset threshold, it is determined that the resolver has no fault.

[0020] Optionally, after determining that the resolver has no fault, the method further includes:

[0021] The resolver uploads the measurement signal.

[0022] In a second aspect, an embodiment of the present invention provides a rotary transformer fault detection device, comprising:

[0023] An acquisition module, used for acquiring a power supply voltage signal of a rotary transformer;

[0024] A fault detection module, used for performing fault detection according to a power supply voltage signal;

[0025] A fault state confirmation module, used to enter a fault confirmation state when the voltage fluctuation of the power supply voltage signal is greater than or equal to a preset threshold;

[0026] A data processing module, used for performing data processing on the power supply voltage signal, and performing fault detection again according to the processed power supply voltage signal;

[0027] The output module is used to output the fault information of the rotary transformer when the voltage fluctuation of the processed power supply voltage signal is greater than or equal to a preset threshold.

[0028] In a third aspect, an embodiment of the present invention provides a rotary transformer fault detection device, comprising:

[0029] one or more processors;

[0030] A memory for storing one or more programs;

[0031] When one or more programs are executed by one or more processors, the one or more processors implement the rotary transformer fault detection method provided by any embodiment of the present invention.

[0032] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method for detecting a fault of a rotary transformer provided by any embodiment of the present invention is implemented.

[0033] The fault detection method provided in the embodiment of the present invention adds a fault confirmation process after detecting that the power supply voltage signal is greater than a preset threshold value. The fault confirmation process reconfirms whether the rotary transformer has a fault, thereby avoiding the electronic control system from misjudging small-range fluctuations or glitches in the power supply voltage signal when power is just turned on as a rotary transformer fault, thereby improving the accuracy and reliability of fault detection and improving the robustness of the rotary transformer.

[0034] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 is a flow chart of a method for detecting a fault of a rotary transformer provided by an embodiment of the present invention;

[0037] Figure 2 is a flow chart of another method for detecting a fault of a rotary transformer provided by an embodiment of the present invention;

[0038] Figure 3 is a flow chart of another method for detecting a fault of a rotary transformer provided by an embodiment of the present invention;

[0039] Figure 4 is a structural block diagram of a rotary transformer fault detection device provided by an embodiment of the present invention;

[0040] Figure 5 It is a structural schematic diagram of a rotary transformer fault detection device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the present solution, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] After the rotary transformer is powered on, it will perform a self-check and perform fault monitoring during this process. In the prior art, when the power supply voltage signal is not within the preset range, the rotary transformer will be determined to be faulty, and a corresponding fault bit will be generated to report the fault. However, in the prior art, the rotary transformer may have a small range of fluctuations or glitches due to voltage instability during the power-on process, resulting in a false fault alarm. If the rotary transformer reports a fault, the motor controller cannot work normally. However, the reported fault may be caused by occasional small range fluctuations and glitches in the power supply voltage, and is not a real fault, which affects the robustness and stability of the system.

[0044] In order to solve the above technical problems, an embodiment of the present invention provides a method for detecting a fault of a rotary transformer. Figure 1 is a flowchart of a method for detecting a rotary transformer fault provided by an embodiment of the present invention, with reference to Figure 1 , the fault detection methods include:

[0045] S101. Obtain a power supply voltage signal of a rotary transformer.

[0046] Specifically, after the rotary transformer is powered on, the electric control system obtains the power supply voltage signal of the rotary transformer.

[0047] S102: Perform fault detection according to the power supply voltage signal.

[0048] Specifically, the fault detection based on the power supply voltage signal can adopt the fault detection strategy when the rotary transformer is powered on in the prior art. Different from the prior art, when S102 detects a fault, the fault is not directly reported, but further confirmed.

[0049] S103: If the voltage fluctuation of the power supply voltage signal is greater than or equal to a preset threshold, enter a fault confirmation state.

[0050] Among them, the preset threshold is a voltage value used to determine whether the rotary transformer is faulty, and can be designed according to the actual model of the rotary transformer during specific implementation. Specifically, when the power supply voltage signal is greater than or equal to the preset threshold, it will be preliminarily determined that the rotary transformer is faulty, but when the rotary transformer is powered on, the power supply voltage signal occasionally fluctuates or burrs. If the voltage of the power supply voltage signal at a certain moment is greater than or equal to the preset threshold, it may be because the rotary transformer is faulty, or it may be because the power supply voltage signal fluctuates. Therefore, it is necessary to enter the fault confirmation state to confirm again whether the rotary transformer is faulty.

[0051] S104: Perform data processing on the power supply voltage signal, and perform fault detection again according to the processed power supply voltage signal.

[0052] Specifically, when the power supply voltage signal fluctuates, the power supply voltage signal may be greater than or equal to the preset threshold for a very short time, and then return to the normal range. Therefore, the electronic control system needs to process the power supply voltage signal to eliminate the impact of small-range voltage fluctuations and perform fault detection on the processed power supply voltage signal again.

[0053] S105: If the voltage fluctuation of the processed power supply voltage signal is greater than or equal to a preset threshold, output the fault information of the rotary transformer.

[0054] Specifically, if the processed power supply voltage signal is still greater than or equal to the preset threshold, the misjudgment caused by the small range fluctuation of the power supply voltage signal can be ruled out, the rotary transformer is indeed faulty, and the electronic control system uploads the fault information of the rotary transformer.

[0055] The fault detection method provided in the embodiment of the present invention adds a fault confirmation process after detecting that the power supply voltage signal is greater than a preset threshold value. The fault confirmation process reconfirms whether the rotary transformer has a fault, thereby avoiding the electronic control system from misjudging the power supply voltage signal fluctuation as a rotary transformer fault, improving the accuracy and reliability of fault detection, and improving the robustness of the rotary transformer.

[0056] Figure 2 is a flow chart of another method for detecting a rotary transformer fault provided by an embodiment of the present invention, with reference to Figure 2 , the fault detection methods include:

[0057] S201, power on the resolver and perform a power-on self-test of the resolver.

[0058] Specifically, after the resolver is supplied with low-voltage power, the resolver will perform a self-test, and after the self-test is completed, it will start to perform fault detection based on the power supply voltage signal.

[0059] S202: Obtain a power supply voltage signal of the rotary transformer.

[0060] S203: Perform fault detection according to the power supply voltage signal.

[0061] S204: If the voltage fluctuation of the power supply voltage signal is greater than or equal to a preset threshold, enter a fault confirmation state.

[0062] S205: Obtain the number of times the power supply voltage is greater than a first threshold value or the excitation power supply voltage of the rotary transformer within a preset time period of entering the fault confirmation state.

[0063] Among them, the first threshold is a voltage value set in advance to determine whether the power supply voltage is jittering. The size of the first threshold should be set according to the size of the power supply voltage. The excitation supply voltage is the voltage of the resolver excitation signal line after the circuit board is powered by low voltage.

[0064] S206: When the number of times is greater than the second threshold or the excitation supply voltage is greater than the third threshold, the decoding chip of the rotary transformer is initialized.

[0065] Among them, the second threshold is used to determine whether the power supply voltage fluctuates frequently, and the third threshold is used to determine whether the power supply voltage is too large. The third threshold is set according to the size of the power supply voltage when the rotary transformer fails, and the third threshold can be set to be greater than the first threshold. Specifically, on the one hand, the voltage of the power supply voltage signal at a certain moment is greater than or equal to the preset threshold because the power supply voltage signal fluctuates. After entering the fault confirmation state, the power supply voltage may still fluctuate and peak. When the number of times the power supply voltage is greater than the first threshold within the preset time length is greater than the second threshold, it means that the power supply voltage fluctuates near the first threshold, and the power supply voltage needs to be anti-shake processed to accurately determine whether the rotary transformer fails. On the other hand, the voltage of the power supply voltage signal at a certain moment is greater than or equal to the preset threshold, which may also be because the rotary transformer fails. If the power supply voltage is greater than the third threshold after entering the fault confirmation state, it means that the power supply voltage value is too large, and it is necessary to perform fault detection again to confirm whether the rotary transformer fails. In summary, when the number is greater than the second threshold or the excitation power supply voltage is greater than the third threshold, it is necessary to initialize the decoding chip of the rotary transformer so that the power supply voltage can be detected again.

[0066] S207 , after the decoding chip is initialized, anti-shake processing is performed on the power supply voltage signal, and fault detection is performed again according to the processed power supply voltage signal.

[0067] The decoding chip is used to analyze the measurement signal of the resolver, and the anti-shake processing can eliminate the spikes and glitches of the power supply voltage signal caused by voltage fluctuations.

[0068] S208: If the voltage fluctuation of the processed power supply voltage signal is greater than or equal to a preset threshold, output the fault information of the rotary transformer.

[0069] S209: If the voltage fluctuation of the processed power supply voltage signal is less than a preset threshold, it is determined that the rotary transformer has no fault.

[0070] Specifically, if the voltage fluctuation of the processed power supply voltage signal is less than the preset threshold, it means that the power supply voltage signal is within the normal range and the rotary transformer is not faulty. The reason why the voltage fluctuation of the power supply voltage signal in S204 is greater than or equal to the preset threshold is that the fluctuation of the power supply voltage signal causes the power supply voltage signal to be temporarily greater than or equal to the preset threshold, and after the power supply voltage signal stops fluctuating, the power supply voltage signal returns to the normal range.

[0071] S210, the rotary transformer uploads the measurement signal.

[0072] Specifically, after determining that the resolver has no fault, the measurement signal is stored and uploaded.

[0073] Figure 3 is a flowchart of another method for detecting a rotary transformer fault provided by an embodiment of the present invention, with reference to Figure 3 , the fault detection methods include:

[0074] S301, power on the resolver and perform a power-on self-test of the resolver.

[0075] S302: Obtain a power supply voltage signal of the rotary transformer.

[0076] S303: Perform fault detection according to the power supply voltage signal.

[0077] S304: If the voltage fluctuation of the power supply voltage signal is less than a preset threshold, it is determined that the rotary transformer has no fault.

[0078] Specifically, if the voltage fluctuation of the power supply voltage signal is smaller than the preset threshold, it means that even if the power supply voltage signal fluctuates, the maximum value of the power supply voltage signal is smaller than the preset threshold.

[0079] S305. The rotary transformer uploads the measurement signal.

[0080] Based on the same inventive concept, an embodiment of the present invention provides a rotary transformer fault detection device, Figure 4 is a structural block diagram of a rotary transformer fault detection device provided by an embodiment of the present invention, with reference to Figure 4 The fault detection device of the rotary transformer includes an acquisition module 1, a fault detection module 2, a fault state confirmation module 3, a data processing module 4 and an output module 5; the acquisition module 1 is used to acquire the power supply voltage signal of the rotary transformer; the fault detection module 2 is used to perform fault detection according to the power supply voltage signal; the fault state confirmation module 3 is used to enter the fault confirmation state when the voltage fluctuation of the power supply voltage signal is greater than or equal to a preset threshold; the data processing module 4 is used to perform data processing on the power supply voltage signal and perform fault detection again according to the processed power supply voltage signal; the output module 5 is used to output the fault information of the rotary transformer when the voltage fluctuation of the processed power supply voltage signal is greater than or equal to the preset threshold.

[0081] The acquisition module 1 acquires the power supply voltage signal of the rotary transformer, and sends the power supply voltage signal of the rotary transformer to the fault detection module 2. The fault detection module 2 performs fault detection according to the power supply voltage signal. If the power supply voltage signal is less than the preset threshold, it means that the rotary transformer has no fault. If the power supply voltage signal is greater than or equal to the preset threshold, it means that the rotary transformer may have a fault. The fault detection module 2 sends the power supply voltage signal to the fault confirmation module 3 for a fault confirmation process. The fault state confirmation module 3 sends the power supply voltage signal to the data processing module 4 when the voltage fluctuation of the power supply voltage signal is greater than or equal to the preset threshold. The data processing module 4 performs anti-shake processing on the power supply voltage signal to eliminate the jitter in the power supply voltage signal that may cause misjudgment. Then the data processing module 4 performs fault detection again on the power supply voltage signal after the anti-shake processing. If the processed power supply voltage signal is less than the preset threshold, it means that the fault detection module 2 misjudged and the rotary transformer has no fault. If the processed power supply voltage signal is greater than or equal to the preset threshold, it means that the rotary transformer has a fault. The data processing module 4 sends the fault information of the rotary transformer to the output module 5, and the output module outputs the fault information of the rotary transformer.

[0082] Based on the same inventive concept, an embodiment of the present invention provides a rotary transformer fault detection device, including: one or more processors; a memory for storing one or more programs; when the one or more programs are executed by one or more processors, the one or more processors implement the rotary transformer fault detection method provided by any embodiment of the present invention.

[0083] Based on the same inventive concept, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method for detecting a fault of a rotary transformer provided by any embodiment of the present invention is implemented.

[0084] Figure 5 : is a structural schematic diagram of a rotary transformer fault detection device provided by an embodiment of the present invention. The rotary transformer fault detection device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The rotary transformer fault detection device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0085] like Figure 5 As shown, the rotary transformer fault detection device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In RAM 13, various programs and data required for the operation of the rotary transformer fault detection device 10 can also be stored. The processor 11, ROM 12 and RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0086] A plurality of components in the rotary transformer fault detection device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the rotary transformer fault detection device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0087] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a grounding control method for a distribution network.

[0088] In some embodiments, the grounding control method of the distribution network may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the fault detection device 10 of the rotary transformer via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the grounding control method of the distribution network described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the grounding control method of the distribution network in any other appropriate manner (e.g., by means of firmware).

[0089] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0090] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0091] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0092] To provide interaction with a user, the systems and techniques described herein may be implemented on a rotary transformer fault detection device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the rotary transformer fault detection device. Other types of devices may also be used to provide interaction with a user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0093] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0094] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0095] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0096] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for detecting a rotary transformer fault, characterized in that: include: Acquiring a power supply voltage signal of the rotary transformer; performing fault detection according to the supply voltage signal; If the voltage fluctuation of the power supply voltage signal is greater than or equal to a preset threshold, entering a fault confirmation state; performing data processing on the power supply voltage signal, and performing fault detection again according to the processed power supply voltage signal; If the voltage fluctuation of the processed power supply voltage signal is greater than or equal to the preset threshold, fault information of the rotary transformer is output.

2. The method for detecting a rotary transformer fault according to claim 1, characterized in that: After entering the fault confirmation state, it also includes: Obtaining the number of times the power supply voltage is greater than a first threshold value or the excitation power supply voltage of the rotary transformer within a preset time period of entering a fault confirmation state; When the number is greater than a second threshold or the excitation supply voltage is greater than a third threshold, the decoding chip of the rotary transformer is initialized.

3. The method for detecting a rotary transformer fault according to claim 2, characterized in that: Performing data processing on the supply voltage signal includes: After the decoding chip is initialized, anti-shake processing is performed on the supply voltage signal.

4. The method for detecting a rotary transformer fault according to claim 1, characterized in that: Before obtaining the power supply voltage signal of the rotary transformer, the method further includes: Power on the rotary transformer and perform a power-on self-test on the rotary transformer.

5. The method for detecting a rotary transformer fault according to claim 1, characterized in that: After performing fault detection according to the supply voltage signal, the method further includes: If the voltage fluctuation of the power supply voltage signal is less than the preset threshold, it is determined that the rotary transformer has no fault.

6. The method for detecting a rotary transformer fault according to claim 1, characterized in that: If the voltage fluctuation of the processed power supply voltage signal is less than the preset threshold, it is determined that the rotary transformer has no fault.

7. The method for detecting a rotary transformer fault according to claim 5 or 6, characterized in that: After determining that the rotary transformer has no fault, the method further includes: The rotary transformer uploads the measurement signal.

8. A rotary transformer fault detection device, characterized in that: include: An acquisition module, used for acquiring a power supply voltage signal of a rotary transformer; A fault detection module, used for performing fault detection according to the supply voltage signal; A fault state confirmation module, used to enter a fault confirmation state when the voltage fluctuation of the power supply voltage signal is greater than or equal to a preset threshold; A data processing module, used to perform data processing on the power supply voltage signal, and perform fault detection again according to the processed power supply voltage signal; The output module is used to output the fault information of the rotary transformer when the voltage fluctuation of the processed power supply voltage signal is greater than or equal to the preset threshold.

9. A rotary transformer fault detection device, characterized in that: include: one or more processors; A memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the resolver fault detection method according to any one of claims 1 to 7.

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

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