A rotary transformer decoding device

Abstract

This application discloses a resolver decoding device. The decoding device includes: a resolver decoding chip for receiving resolver signals output from a resolver and converting the resolver signals into one or more of serial data, parallel data, and analog incremental encoded signals; a level conversion circuit connected to the resolver decoding chip; a single-ended to differential circuit connected to the level conversion circuit; an external signal I / O interface connected to the resolver decoding chip; and a main controller connected to the resolver decoding chip. The main controller is used to transmit serial or parallel data with the resolver decoding signals and to receive the analog incremental encoded signals from the resolver decoding chip. The main controller is also connected to a USB interface. This resolver decoding device is applicable to scenarios in motor development and motor control debugging.

Description

Technical Field

[0001] This application relates to the field of rotary transformer decoding technology, and more particularly to a rotary transformer decoding device. Background Technology

[0002] In motor development and control debugging, speed and position signal acquisition is required. Commonly used sensors include optical encoders, Hall effect sensors, and rotary transformers. In practical applications, optical encoders suffer from poor environmental adaptability, limited installation freedom, and poor adaptability due to installation limitations or mechanical vibration. Hall effect sensors share similar drawbacks with optical encoders, also being unable to adapt to high speeds and exhibiting poor position acquisition accuracy. Although rotary transformers are more complex to drive and decode, their suitability for high speeds, high installation freedom, and good resistance to vibration and damp heat make them more widely applicable in motor development and control debugging.

[0003] In the application of resolvers, there are two common decoding methods: hardware decoding and software decoding. Software decoding has higher resource consumption (leading to higher hardware requirements), lower real-time signal processing speed, slightly lower accuracy, and poorer universality. It is not suitable for various scenarios in motor development and motor control debugging. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a rotary transformer decoding device, applicable to scenarios in motor development and motor control debugging.

[0005] This application provides a rotary transformer decoding device, the decoding device comprising:

[0006] A resolver decoding chip is used to receive the resolver signal output by the resolver and convert the resolver signal into one or more of serial data, parallel data, and analog incremental coded signals;

[0007] A level conversion circuit is connected to the resolver decoding chip. The level conversion circuit is used to convert the analog incremental encoded signal into a single-ended signal and output it.

[0008] A single-ended to differential circuit is connected to the level conversion circuit. The single-ended to differential circuit is used to convert the single-ended signal output by the level conversion circuit into a differential signal and output it.

[0009] An external signal I / O interface is connected to the resolver decoding chip, and the resolver decoding chip transmits one or more of the following through the external signal I / O interface: serial data, parallel data, analog incremental encoded signals, configuration signals, fault signals, and reset signals.

[0010] The main controller is connected to the resolver decoding chip. The main controller is used to transmit serial or parallel data with the resolver decoding signal and to receive the analog incremental encoding signal from the resolver decoding chip. The main controller is also connected to a USB interface.

[0011] In one embodiment of the aforementioned rotary transformer decoding device,

[0012] The main controller is equipped with an SDIO interface, and a TF card is connected to the main controller through the SDIO interface.

[0013] In one embodiment of the aforementioned rotary transformer decoding device,

[0014] The main controller is also used to configure and reset the resolver decoding chip, as well as read back the fault signals of the resolver decoding chip.

[0015] In one embodiment of the aforementioned rotary transformer decoding device,

[0016] The device further includes a resolver drive circuit, which is connected to the resolver decoding chip and the resolver; the resolver drive circuit is used to receive the drive signal output by the resolver decoding chip and amplify the drive signal to drive the resolver.

[0017] In one embodiment of the aforementioned rotary transformer decoding device,

[0018] The device also includes a power supply circuit, which comprises a power input circuit, a switching step-down circuit, and a linear power supply connected in sequence.

[0019] The power input circuit is also connected to the resolver drive circuit; the linear power supply is connected to the resolver decoding chip and the main controller, and the linear power supply is used to supply the resolver decoding chip and the main controller with the corresponding voltage.

[0020] In one embodiment of the aforementioned rotary transformer decoding device,

[0021] The linear power supply is connected to an operating status indicator module, which is used to indicate the operating status of the linear power supply.

[0022] In one embodiment of the aforementioned rotary transformer decoding device,

[0023] The resolver decoding chip is also externally connected to a fault indication module, which is used to indicate the fault signal of the resolver decoding chip.

[0024] In one embodiment of the aforementioned rotary transformer decoding device,

[0025] The resolver decoding chip is also externally connected to an operating mode jumper and a decoding reset button. The operating mode jumper is used to configure the resolver decoding chip accordingly; the decoding reset button is used to externally reset the resolver decoding chip.

[0026] In one embodiment of the aforementioned rotary transformer decoding device,

[0027] The main controller is also connected to a startup mode jumper, an external reset button, and a program flashing interface.

[0028] The startup mode jumper is used to select the startup mode of the main controller;

[0029] The external reset button is used to externally reset the main controller;

[0030] The program flashing interface is used to connect to peripheral devices to flash the corresponding programs of the main controller.

[0031] The above-described one or more embodiments of this application have at least one or more of the following beneficial effects:

[0032] In implementing the technical solution of this application, this application sets up corresponding level conversion circuits, single-ended to differential circuits, external signal I / O interfaces and USB interfaces of the main controller based on the resolver decoding chip, which can meet the needs of the decoding device to connect to various control or debugging measurement equipment, so that it can be applied to more scenarios in motor development and motor control debugging, with strong versatility, and meets the needs of multiple expansion and high integration.

[0033] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0034] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:

[0035] Figure 1 This is a schematic diagram of the structure of a rotary transformer decoding device according to one embodiment of this application;

[0036] Figure 2 This is a schematic diagram illustrating an application scenario of a rotary transformer decoding device according to one embodiment of this application;

[0037] Figure 3 This is a schematic diagram illustrating another application scenario of the rotary transformer decoding device according to one embodiment of this application;

[0038] Figure 4 This is a schematic diagram illustrating another application scenario of the rotary transformer decoding device according to one embodiment of this application;

[0039] Figure 5 This is a schematic diagram of another application scenario of the rotary transformer decoding device according to one embodiment of this application. Detailed Implementation

[0040] Some embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0041] As described in the background section, a rotary transformer is an electromagnetic sensor primarily used for measuring angular position and angular velocity. A rotary transformer consists of a stator that is fixed during installation and a rotor mounted on a shaft. The working principle of a rotary transformer is similar to that of a conventional transformer; its stator and rotor can be considered the primary and secondary sides of the transformer. The stator windings receive an external excitation voltage, while the rotor windings generate an induced electromotive force (EMF) through electromagnetic coupling. After demodulation and other processing, the induced EMF of the rotor windings yields the rotor's rotation angle, thus providing data such as the shaft angular position and angular velocity of the target structure. When an external excitation voltage of a certain frequency is applied to the stator windings of a sine / cosine rotary transformer, the windings on the rotating rotor output an amplitude-modulated signal whose amplitude is related to the rotor shaft angle by a sine or cosine function. Existing methods for decoding the output signal of resolvers typically employ software decoding. The software analyzes and calculates the signal level after analog-to-digital conversion using an MCU. However, during motor development and debugging, measurements may be taken at different locations, and the debugging scenarios may vary. Different control and debugging systems may be used for speed and position measurements with varying accuracy and response speed requirements. This necessitates the development and use of different software to meet the testing scenarios, thus limiting the versatility of software-based approaches. Therefore, this application proposes a resolver decoding device based on the principles of multi-expansion, high integration, and high versatility. This hardware-based approach aims to meet the needs of various scenarios in motor development and motor control debugging.

[0042] See appendix Figure 1In one or more embodiments, a resolver decoding device of this application includes: a resolver decoding chip for receiving resolver signals output from a resolver and converting the resolver signals into one or more of serial data, parallel data, and analog incremental encoded signals; a level conversion circuit connected to the resolver decoding chip for converting the analog incremental encoded signals into single-ended signals and outputting them; a single-ended to differential circuit connected to the level conversion circuit for converting the single-ended signals output by the level conversion circuit into differential signals and outputting them; an external signal I / O interface connected to the resolver decoding chip for transmitting one or more of serial data, parallel data, analog incremental encoded signals, configuration signals, fault signals, and reset signals through the external signal I / O interface; a main controller connected to the resolver decoding chip for transmitting serial data or parallel data with the resolver decoding signals and receiving analog incremental encoded signals from the resolver decoding chip; the main controller is also connected to a USB interface.

[0043] It can be understood that a resolver decoding chip is a dedicated chip used to decode the resolver signal (a type of analog signal) output by a resolver transformer. A resolver decoding chip can also be called a resolver-to-digital converter (RDC), or shaft-angle-to-digital converter, and is a type of analog-to-digital converter specifically designed for resolvers. A resolver decoding chip can convert the electrical signal (SIN, COS signal) output by the resolver transformer, which is proportional to the sine and / or cosine of the rotation shaft angle, into a digital output corresponding to the rotation angle and / or angular velocity, i.e., one or more of serial data, parallel data, and analog incremental encoded signals. Based on the function of the resolver decoding chip, this application configures a level conversion circuit for the resolver decoding chip, which can convert the analog incremental encoded signal output by the resolver decoding chip into a single-ended signal output. The single-ended to differential circuit can convert the single-ended signal into a differential signal output, meeting the needs of information processing devices that receive differential signals in motor development and motor control debugging scenarios, such as power analyzers. Based on the functionality of the resolver decoding chip, this application also configures an external signal I / O interface for the resolver decoding chip. This external signal I / O interface allows the resolver decoding chip to simultaneously transmit signals of multiple formats, including serial data, parallel data, analog incremental encoded signals, configuration signals (which may include resolution configuration, operating mode configuration, and communication mode selection signals), fault signals, and reset signals. The high signal transmission rate meets the needs of multi-signal streams and high-performance information processing devices, such as FPGAs / DSPs, that may be used in motor development and motor control debugging scenarios. The main controller can be a microcontroller that can communicate with the resolver decoding chip. Communication mainly includes transmitting either serial or parallel data, receiving analog incremental encoded signals output from the resolver decoding chip, and performing related configuration and signal readback on the resolver decoding chip. In this application, the main controller is configured to connect to a USB interface, enabling communication with a host computer (PC or other devices), thus meeting the needs of scenarios in motor development and motor control debugging where direct information processing by the host computer is required.

[0044] The resolver decoding chip can be the AD2S1210 chip, or other chips in the AD2S12XX series or other similar RDC chips.

[0045] The level conversion circuit can convert the analog incremental encoded signal into a 5V TTL single-ended signal.

[0046] The rotary transformer decoding device of this application embodiment is based on the rotary transformer decoding chip and is equipped with corresponding level conversion circuit, single-ended to differential circuit, external signal I / O interface and main controller USB interface. It can meet the needs of the decoding device to connect to various control or debugging measurement equipment, so it can be applied to more scenarios in motor development and motor control debugging. It has strong versatility and meets the needs of multiple expansion and high integration.

[0047] In one embodiment, reference Figure 1 The main controller is equipped with an SDIO interface, through which a TF card is connected. Specifically, the rotary transformer decoding device can be equipped with a TF card slot for installing TF cards. The SDIO interface built into the main controller connects to the TF card in the TF card slot, enabling data interaction. This can be understood as directly saving data to the TF card, thus enabling operational status monitoring.

[0048] In one possible implementation, refer to Figure 1 The main controller is connected to the resolver decoding chip and is also used for configuring or resetting the resolver decoding chip and for signal readback. Configuration includes setting the resolution and configuration mode for the resolver decoding chip; signal readback includes the readback of the incremental encoded signal and the readback of the fault signal.

[0049] In one embodiment, reference Figure 1 The resolver decoding device also includes a resolver drive circuit, which connects the resolver decoding chip and the resolver. The resolver drive circuit receives the drive signal (EXC) output by the resolver decoding chip and amplifies it to drive the resolver. Essentially, the resolver decoding chip contains a push-pull excitation driver that generates a high-frequency (e.g., 5kHz, 10kHz, 20kHz) sine wave or square wave (usually externally filtered into a sine wave) AC excitation signal (EXC+, EXC-). This signal drives the primary winding (rotor or stator) of the resolver, enabling it to operate.

[0050] In one embodiment, reference Figure 1 The resolver decoding device also includes a power supply circuit, which comprises a power input circuit, a switching step-down circuit, and a linear power supply connected in sequence. The power input circuit is also connected to the resolver drive circuit. The linear power supply connects the resolver decoding chip and the main controller, and is used to supply the resolver decoding chip and the main controller with the appropriate voltages. Specifically, the power input circuit can be connected to the power supply via external terminals; the switching step-down circuit converts the power supply voltage connected to the power input circuit into a voltage required by the internal components of the resolver decoding device; the linear power supply can convert the power supply voltage output by the switching step-down circuit into a lower, higher-precision voltage to power the resolver decoding chip and the main controller.

[0051] The power input circuit includes a reverse connection protection circuit and a filter circuit. The reverse connection protection circuit prevents the user from reversing the positive and negative terminals of the power supply, thus avoiding damage to subsequent circuits. The filter circuit filters out noise, ripple, and transient interference on the power line, providing a clean and stable power supply for subsequent circuits. In one possible connection configuration, the reverse connection protection circuit can be connected between the positive terminal of the power input and the filter circuit. The reverse connection protection element (such as a diode or MOSFET) is connected in series in the positive input path, and the filter capacitor in the filter circuit is connected in parallel between the positive output after reverse connection protection and ground. The power supply, after being filtered by the filter circuit, is supplied to the subsequent switching voltage drop circuit and resolver drive circuit.

[0052] The switching step-down circuit can be a Buck switching step-down circuit or other circuits that can perform voltage conversion, such as having a 5V power supply and the ability to directly input 5V. For example, in use, the power input circuit is connected to a 12V power supply, and the Buck switching step-down circuit steps down the 12V to 5V, thereby powering the 5V-consuming electrical components or circuits in the device.

[0053] The linear power supply can be a linear power supply chip. For example, in use, the linear power supply chip converts the 5V power output from the Buck switch step-down circuit into a high-precision 3.3V power supply, thereby powering 3.3V-consuming components or circuits such as the resolver decoder chip and the main controller.

[0054] In one possible implementation, the linear power supply is connected to an operating status indicator module, which indicates the operating status of the linear power supply. Specifically, the operating status indicator module can be an LED, and the illumination status of the LED indicates whether the linear power supply is running, thereby indicating whether the resolver decoder chip and the main controller are running.

[0055] In one embodiment, reference Figure 1 The resolver decoder chip also has an external fault indication module, which is used to indicate fault signals of the resolver decoder chip. Specifically, the fault indication module can be an LED, and the lighting status of the LED indicates whether the resolver decoder chip has malfunctioned, ensuring the accuracy of the motor development and control debugging process.

[0056] In one embodiment, reference Figure 1The resolver decoder chip also has external jumpers for operating mode, resolution setting, and a decoder reset button. The operating mode jumper is used to configure the resolver decoder chip; the resolution setting jumper is used to configure the output resolution of the decoder chip; and the decoder reset button is used to externally reset the resolver decoder chip. Specifically, the operating mode and resolution setting jumpers can be pin header jumpers. The resolver decoder chip can be connected to external devices (such as resistors, jumper caps, or microcontroller pins) via these jumpers to configure its mode and resolution. The operating mode of the resolver decoder chip specifically refers to configuring its default output mode: position output, speed output, or host computer configuration mode (selecting this mode allows external devices such as microcontrollers to configure the resolver decoder chip's registers for more detailed settings). The level combination can be selected via a dual-pin header jumper cap, or controlled by an MCU. The decoder reset button is connected to the reset pin of the resolver decoder chip, allowing the resolver decoder chip to be reset externally.

[0057] In one embodiment, reference Figure 1 The main controller also includes a boot mode jumper, an external reset button, and a program flashing interface. The boot mode jumper selects the boot mode of the main controller; the external reset button performs an external reset of the main controller; and the program flashing interface connects to peripherals to flash the corresponding programs onto the main controller. Specifically, the boot mode jumper is a pin header jumper connected to the main controller, allowing selection of the boot mode. The external reset button connects to the reset pin of the main controller, enabling external control of the main controller's reset function. The program flashing interface connects to peripherals (such as a host computer) to communicate with the main controller via JTAG and SWD protocols, thereby enabling program flashing of the main controller.

[0058] Based on the above implementation methods, refer to Figure 1 and Figure 2 This embodiment presents an optional application scenario for the rotary transformer decoding device. The system in this application scenario includes a motor under test, a motor under test controller, a companion motor under test, a companion motor controller, a torque measurement module, and a host computer. The motor under test controller is connected in parallel with a power analyzer for analyzing the power of the motor under test through voltage and current sampling. The motor under test controller is connected to a high-voltage power supply. The torque measurement module is connected to the companion motor and the host computer, sampling the torque of the companion motor and transmitting it to the host computer. The host computer and the motor under test controller communicate with each other. A rotary transformer is installed on the motor under test, and the rotary transformer is connected to the rotary transformer decoding device of this application. The rotary transformer decoding device is connected to the host computer.

[0059] In this application scenario, the rotary transformer decoding device communicates with the host computer via a USB interface on the main controller to exchange data. This application scenario can achieve low-precision, low-response speed and position measurement, with information processing handled uniformly by the host computer, allowing for the development and debugging of the motor under test.

[0060] Based on the above implementation methods, refer to Figure 1 and Figure 3 Another optional application scenario for the resolver decoding device in this embodiment. The system in this application scenario includes a motor under test, a motor under test controller, a companion motor under test, a companion motor controller, a torque measurement module, a host computer, and an FPGA / DSP. The motor under test controller is connected in parallel with a power analyzer for analyzing the power of the motor under test through voltage and current sampling. The motor under test controller is connected to a high-voltage power supply. The torque measurement module is connected to the companion motor and the FPGA / DSP, sampling the torque of the companion motor and transmitting it to the FPGA / DSP. The FPGA / DSP is connected to the host computer. The FPGA / DSP and the motor under test controller communicate with each other, performing necessary signal interactions. The FPGA / DSP processes the data from the resolver decoding device and the motor under test controller in a unified manner and uploads it to the host computer. A resolver is installed on the motor under test, connected to the resolver decoding device of this application, and the resolver decoding device is connected to the FPGA / DSP.

[0061] In this application scenario, the resolver decoding device communicates with the FPGA / DSP via a parallel port through an external signal I / O interface connected to the resolver decoding chip, enabling parallel data exchange. This application scenario allows for high-precision, fast-response speed and position measurement. Information processing is performed by the FPGA / DSP, and the processed information is then transmitted to a host computer for the development and debugging of the motor controller under test.

[0062] Based on the above implementation methods, refer to Figure 1 and Figure 4 Another optional application scenario for the rotary transformer decoding device in this embodiment. The system in this application scenario includes a motor under test, a motor under test controller, a companion motor, a companion motor controller, a torque measurement module, and a host computer. The motor under test controller is connected in parallel with a power analyzer for analyzing the power of the motor under test through voltage and current sampling. In this scenario, the power analyzer also includes a motor evaluation module. The motor under test controller is connected to a high-voltage power supply. The torque measurement module connects to the companion motor and the motor evaluation module, sampling the torque of the companion motor and transmitting it to the motor evaluation module. The host computer communicates with the motor under test controller. A rotary transformer is installed on the motor under test, and the rotary transformer is connected to the rotary transformer decoding device of this application. The rotary transformer decoding device is connected to the motor evaluation module.

[0063] In this application scenario, the resolver decoding device communicates with the motor evaluation module via a single-ended to differential circuit. The resolver decoding device directly outputs an analog incremental encoded signal to the power analyzer, and information processing is performed by the motor evaluation module of the power analyzer. This application scenario enables high-precision, fast-response speed and position measurement.

[0064] Based on the above implementation methods, refer to Figure 1 and Figure 5 Another optional application scenario for the rotary transformer decoding device in this embodiment. The system in this application scenario includes a motor under test, a motor under test controller, a companion motor, a companion motor controller, a torque measurement module, and a host computer. The motor under test controller is connected in parallel with a power analyzer for analyzing the power of the motor under test through voltage and current sampling. The motor under test controller is connected to a high-voltage power supply. The torque measurement module is connected to the companion motor and the host computer, sampling the torque of the companion motor and transmitting it to the host computer. The host computer and the motor under test controller communicate with each other. A rotary transformer is installed on the motor under test, and the rotary transformer is connected to the rotary transformer decoding device of this application. The rotary transformer decoding device is connected to a TF card.

[0065] In this application scenario, the rotary transformer decoding device transmits data (such as speed and position signals) directly to the TF card connected to the main controller, thereby recording the operating status of the motor under test through the TF card.

[0066] It is important to understand that the above scenarios can be used interchangeably and in combination, covering the vast majority of application scenarios in motor development and control debugging, and providing a highly integrated, high-performance, and highly scalable solution for speed and position sampling in motor development and control debugging.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A resolver decoding device, characterized by comprising: The decoding device includes: A resolver decoding chip is used to receive the resolver signal output by the resolver and convert the resolver signal into one or more of serial data, parallel data, and analog incremental coded signals; A level conversion circuit is connected to the resolver decoding chip. The level conversion circuit is used to convert the analog incremental encoded signal into a single-ended signal and output it. A single-ended to differential circuit is connected to the level conversion circuit. The single-ended to differential circuit is used to convert the single-ended signal output by the level conversion circuit into a differential signal and output it. An external signal I / O interface is connected to the resolver decoding chip, and the resolver decoding chip transmits one or more of the following through the external signal I / O interface: serial data, parallel data, analog incremental encoded signals, configuration signals, fault signals, and reset signals. The main controller is connected to the resolver decoding chip. The main controller is used to transmit serial or parallel data with the resolver decoding signal and to receive the analog incremental encoding signal from the resolver decoding chip. The main controller is also connected to a USB interface.

2. The resolver decoding device of claim 1, wherein, The main controller is equipped with an SDIO interface, and a TF card is connected to the main controller through the SDIO interface.

3. The resolver decoding apparatus according to claim 1, characterized by, The main controller is also used to configure and reset the resolver decoding chip, as well as read back the fault signals of the resolver decoding chip.

4. The resolver decoding apparatus according to claim 1, characterized by The device further includes a resolver drive circuit, which is connected to the resolver decoding chip and the resolver; the resolver drive circuit is used to receive the drive signal output by the resolver decoding chip and amplify the drive signal to drive the resolver.

5. The resolver decoding apparatus according to claim 4, characterized by The device also includes a power supply circuit, which comprises a power input circuit, a switching step-down circuit, and a linear power supply connected in sequence. The power input circuit is also connected to the resolver drive circuit; The linear power supply connects the resolver decoding chip and the main controller, and is used to supply the resolver decoding chip and the main controller with the corresponding voltage.

6. The resolver decoding apparatus according to claim 5, wherein The linear power supply is connected to an operating status indicator module, which is used to indicate the operating status of the linear power supply.

7. The resolver decoding apparatus according to claim 1, wherein The resolver decoding chip is also externally connected to a fault indication module, which is used to indicate the fault signal of the resolver decoding chip.

8. The resolver decoding apparatus according to claim 1, wherein The resolver decoding chip is also externally connected to an operating mode jumper and a decoding reset button. The operating mode jumper is used to connect to an external device to configure the resolver decoding chip accordingly; the decoding reset button is used to externally reset the resolver decoding chip.

9. The resolver decoding apparatus according to claim 8, wherein The main controller is also connected to a startup mode jumper, an external reset button, and a program flashing interface. The startup mode jumper is used to select the startup mode of the main controller; The external reset button is used to externally reset the main controller; The program flashing interface is used to connect to peripheral devices to flash the corresponding programs of the main controller.

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