Adaptive system based on rotary transformer and electronic equipment

Abstract

The embodiment of the utility model provides an adaptive system based on a rotary transformer and electronic equipment. The adaptive system comprises an excitation signal generation module, a reference adjustment module, a gain adjustment module and a control module, the excitation signal generating module, the reference adjusting module and the gain adjusting module are sequentially connected in series, the output end of the gain adjusting module is connected with the input end of the rotary transformer through the driving module, and the output end of the rotary transformer is connected with the control module through the sine and cosine signal processing module; the excitation signal generation module, the reference adjustment module and the gain adjustment module are all connected with the control module. Through the control module, the reference value of the benchmark adjusting module and the amplification value of the gain adjusting module are adjusted, self-adaptive adjustment of a rotary transformer excitation signal is achieved, and errors of a decoding system in analysis of the rotating speed and the angle are reduced. According to the self-adaptive system, the overall performance and reliability are improved through close fit and dynamic adjustment among the modules.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of motor control, and particularly to an adaptive system based on a resolver and an electronic device. Background Art

[0002] The decoding process of a resolver involves converting the sine and cosine signals output by the resolver into actual rotation angle and speed information, which is an important link for achieving precise control. If the decoding process is inaccurate, it may affect the control accuracy of the system, thereby affecting the overall performance. And decoding errors may lead to system out-of-control and even cause safety accidents. However, due to differences in design and manufacturing, the turns ratio settings of resolvers from different manufacturers are not the same. This difference in turns ratio will lead to mismatches in circuit parameters, affecting the accuracy of the decoding system and possibly resulting in decoding deviations or even errors.

[0003] In the prior art, a typical resolver excitation circuit usually includes a signal generation unit and a simple signal conditioning circuit. The signal generation unit is used to generate the excitation signals required by the resolver, and these excitation signals are usually sine waves, square waves or other types of waveform signals. The signal conditioning circuit then adjusts these signals to ensure that they meet the operating requirements of the resolver. However, in the face of resolvers with different turns ratios, the solutions in the prior art usually require manual adjustment or replacement of different circuit components to ensure that the excitation signals can match the specific requirements of the resolver. This manual adjustment method includes adjusting components such as resistors and capacitors in the circuit, or in some cases, replacing the entire signal conditioning circuit to adapt to the new turns ratio of the resolver. This manual adjustment method is time-consuming and laborious, and has high requirements for the professional skills of the operator. And the manual adjustment process is prone to misoperation, resulting in inaccurate signal conditioning and thus affecting the overall performance of the system.

[0004] Based on this, there is an urgent need for an adaptive system based on a resolver to solve the technical problem of poor adaptability to resolvers from different manufacturers in the prior art. Utility Model Content

[0005] The present utility model provides an adaptive system based on a resolver and an electronic device to solve the technical problem of poor adaptability to resolvers from different manufacturers in the prior art.

[0006] In the first aspect of the embodiments of the present application, an adaptive system based on a resolver is provided. The adaptive system includes an excitation signal generation module, a reference adjustment module, a gain adjustment module, and a control module;

[0007] The excitation signal generation module, the reference adjustment module, and the gain adjustment module are connected in series in sequence. The output end of the gain adjustment module is connected to the input end of the resolver through the drive module, and the output end of the resolver is connected to the control module through the sine-cosine signal processing module;

[0008] The excitation signal generation module, the reference adjustment module, and the gain adjustment module are all connected to the control module.

[0009] In a possible implementation manner, the reference adjustment module includes reference circuits corresponding to multiple reference values;

[0010] The multiple reference circuits are connected in parallel. A first conduction control switch is provided on each reference circuit, and each first conduction control switch is connected to the control module;

[0011] The input end of each reference circuit is connected to the output end of the excitation signal generation module, and the output end of each reference circuit is connected to the input end of the gain adjustment module through the first conduction control switch.

[0012] In a possible implementation manner, the gain adjustment module includes amplifier circuits corresponding to multiple amplification factors;

[0013] The multiple amplifier circuits are connected in parallel. A second conduction control switch is provided on each amplifier circuit, and each second conduction control switch is connected to the control module;

[0014] The input end of each amplifier circuit is connected to the output end of the reference adjustment module, and the output end of each amplifier circuit is connected to the input end of the drive module through the second conduction control switch.

[0015] In a possible implementation manner, the reference adjustment module includes a first operational amplifier and reference voltage branches corresponding to multiple reference values;

[0016] A first conduction control switch is connected in series on each reference voltage branch, and the multiple reference voltage branches are connected in parallel. The positive-phase input end of the first operational amplifier is connected to the output end of each first conduction control switch through a resistor;

[0017] The excitation signal generation module, the resistor, and the negative-phase input end of the first operational amplifier are connected in series in sequence, and the output end of the first operational amplifier is connected to the gain adjustment module;

[0018] The control module is connected to each first conduction control switch.

[0019] In a possible implementation manner, the first conduction control switch uses a P-type semiconductor field effect transistor;

[0020] The source of the P-type semiconductor field-effect transistor is connected to the reference voltage branch, the drain is connected to the non-inverting input terminal of the first operational amplifier through a resistor, and the gate is connected to the control module.

[0021] In a possible implementation manner, the gain adjustment module includes a second operational amplifier and multiple amplification branches corresponding to different amplification factors;

[0022] A second resistor and a second conduction control switch are sequentially connected in series on each of the amplification branches. The other end of each second conduction control switch is connected to the non-inverting input terminal of the second operational amplifier, and the other end of each second conduction control switch is connected to the output terminal of the second operational amplifier through a first resistor. The other end of each second resistor is grounded;

[0023] The output terminal of the reference adjustment module, the resistor, and the non-inverting input terminal of the second operational amplifier are sequentially connected in series, and the output terminal of the second operational amplifier is connected to the drive module;

[0024] The control module is connected to each second conduction control switch.

[0025] In a possible implementation manner, the second conduction control switch is an N-type semiconductor field-effect transistor;

[0026] The source of the N-type semiconductor field-effect transistor is connected to the non-inverting input terminal of the second operational amplifier, the drain is grounded through the second resistor, and the gate is connected to the control module.

[0027] In a possible implementation manner, the drive module is a power amplifier circuit;

[0028] The sine-cosine signal processing module includes a cosine signal processing unit and a sine signal processing unit;

[0029] The input terminals of the cosine signal processing unit and the sine signal processing unit are both connected to the output terminal of the resolver, and the output terminals of the cosine signal processing unit and the sine signal processing unit are both connected to the control module; wherein, the sine signal processing unit includes a sine filter circuit and a sine operational amplifier circuit, and the cosine signal processing unit includes a cosine filter circuit and a cosine operational amplifier circuit.

[0030] In a possible implementation manner, the reference adjustment module at least adopts one of the operation forms of in-phase addition operation, anti-phase addition operation, or subtraction operation.

[0031] A second aspect of the embodiments of the present application provides an electronic device, including the above-mentioned adaptive system.

[0032] An adaptive system and an electronic device based on a resolver provided by an embodiment of the present utility model realize the control and real-time adjustment of the excitation signal of the resolver, achieving an optimized effect on the overall performance. By generating a stable and suitable excitation signal through the excitation signal generation module, a foundation is laid for the normal operation of the resolver. The reference adjustment module ensures the midpoint value and stability of the excitation signal by dynamically adjusting the reference voltage, significantly improving the signal quality. The gain adjustment module enables the signal amplitude to adapt to the input requirements of the resolver by flexibly selecting different amplification factors, enhancing the adaptability of the system. The drive module further amplifies the signal adjusted by the gain through a power amplification circuit, providing sufficient current driving ability to ensure the stable operation of the resolver under various working conditions. The sine-cosine signal processing module effectively processes the output signal of the resolver, ensuring the accuracy of the signal. The control module realizes the adaptive adjustment of the system by real-time monitoring and dynamically adjusting the working states of each module, greatly improving the accuracy and reliability of the resolver when analyzing the rotation speed and angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0034] Figure 1 It is a schematic structural diagram of the adaptive system provided by an embodiment of the present application;

[0035] Figure 2 It is a schematic diagram of the resolver excitation signal waveform provided by an embodiment of the present application;

[0036] Figure 3 It is a schematic diagram of the signal waveform after passing through the reference adjustment module provided by an embodiment of the present application;

[0037] Figure 4 It is a schematic diagram of the signal waveform after passing through the gain adjustment module provided by an embodiment of the present application;

[0038] Figure 5 It is a schematic structural diagram of the reference adjustment module provided by an embodiment of the present application;

[0039] Figure 6 It is a schematic structural diagram of the gain adjustment module provided by an embodiment of the present application.

[0040] Through the above-mentioned accompanying drawings, the clear embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These accompanying drawings and the textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] The technical solution of the present application will be described in detail below with specific embodiments. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0043] To clearly understand the technical solution of the present application, the solutions of the prior art will be introduced in detail first. Currently, for resolvers with different turns ratios, the solutions in the prior art usually require manual adjustment or replacement of different circuit components to ensure that the excitation signal can match the specific requirements of the resolver. This manual adjustment method includes adjusting components such as resistors and capacitors in the circuit, or in some cases, replacing the entire signal conditioning circuit to adapt to the new resolver turns ratio. This method is not only time-consuming and laborious, but also requires high professional skills of the operator. This may not be realistic in some industrial environments, especially in situations where the production line needs to respond and adjust quickly. In addition, the manual adjustment process is prone to misoperation, resulting in inaccurate signal conditioning, thereby affecting the overall performance of the system. Secondly, when it is necessary to frequently replace the resolver or in the case of multiple resolvers sharing a system, manual adjustment is particularly inconvenient. Each time the resolver is replaced, circuit adjustment or component replacement needs to be carried out again, which not only increases the downtime of the system, reduces production efficiency, but also may cause a series of chain problems, such as wear and poor contact of circuit components. In addition, frequent manual adjustment also increases the complexity of maintenance and operation.

[0044] Therefore, in view of the above technical problems, the concept of the present application is to provide an adaptive system based on a resolver. The adaptive system includes an excitation signal generation module, a reference adjustment module, a gain adjustment module, a drive module, and a control module. Each module cooperates with each other to form a closed-loop control system to achieve adaptive adjustment of the resolver excitation signal and reduce errors in the decoding system during the analysis of rotational speed and angle.

[0045] Specifically, the excitation signal generation module is responsible for generating the excitation signal suitable for the operation of the resolver, producing periodic electrical signals in different forms to meet the requirements of the resolver. The reference adjustment module adjusts the excitation signal through multiple reference circuits to ensure the midpoint value and stability of the signal. The control module selects different reference voltages to achieve flexible adjustment of the reference signal. The gain adjustment module can output various amplification factors, and different amplification factors are selected through the second conduction control switch to ensure that the amplitude of the signal meets the input requirements of the resolver. The control module selectively conducts the corresponding amplification circuit through real-time monitoring and feedback signals to achieve flexible adjustment of signal amplification. The drive module further amplifies the signal output by the gain adjustment module to provide sufficient current to drive the resolver and ensure the smoothness and stability of the output signal. The processed sine and cosine signals are finally transmitted to the control module to obtain the actual voltage maximum value and the actual voltage center value. The control module compares these actual values with the theoretical voltage maximum value and the theoretical voltage center value, and dynamically adjusts the reference value of the reference adjustment module and the amplification factor of the gain adjustment module according to the comparison results, so as to achieve adaptive adjustment of the excitation signal. Through this closed-loop control system, the parameters of each module can be automatically adjusted according to the actual output of the resolver, ensuring that the excitation signal is always in good condition, effectively reducing the errors occurring in the decoding system when analyzing the rotational speed and angle, and improving the accuracy and stability of the system.

[0046] The application scenarios of the embodiments of the present application are introduced below.

[0047] The adaptive system of the present application is applicable to a variety of application scenarios. For example, in a robot control system, a resolver is usually used to detect the joint angles and motion states of the robot. Through the adaptive system of the present application, high-precision angle control and position detection of the robot joints can be achieved, ensuring the precise movement and operation of the robot in a complex environment. The excitation signal generation module generates a stable excitation signal, the reference adjustment module and the gain adjustment module ensure the stability and adaptability of the signal, the drive module provides sufficient current to drive the resolver, and the control module realizes real-time monitoring and dynamic adjustment to ensure the efficient operation of the system. In the field of industrial automation, the adaptive system can be applied to the position and speed control of various automation devices. Resolvers are widely used in equipment such as motor control, robotic arms, and numerical control machine tools. By adopting the adaptive system of the present application, precise control of motors and robotic arms can be achieved, improving the efficiency of the production line and the quality of products. The high-precision control ability and real-time adjustment function of the system ensure the stable operation of industrial automation equipment under high load and complex working conditions. In the field of automotive electronics, resolvers are used in the Electric Power Steering System (EPS) and autonomous driving systems. High-precision steering control helps improve the driving safety and comfort of vehicles. Through the adaptive system of the present application, precise control of the steering system can be achieved, enhancing the handling performance and safety of vehicles. The modular design and high-precision control ability of the system ensure the stability and reliability of automotive electronic systems under complex road conditions. In summary, the adaptive system of the present application is applicable to multiple fields, ensuring the stability and efficiency of the system through signal control and real-time adjustment.

[0048] In order to make the above objects, features, and advantages of the embodiments of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0049] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0050] Figure 1 It is a schematic structural diagram of the adaptive system provided by the embodiments of the present application. As Figure 1As shown, the adaptive system includes an excitation signal generation module, a reference adjustment module, a gain adjustment module, and a control module. These modules cooperate with each other to achieve the driving and signal processing of the resolver, thereby improving the overall performance and stability. Among them, the excitation signal generation module is used to generate the excitation signal required by the resolver. Exemplarily, the excitation signal generation module may include various signal generation units, such as a single-chip microcomputer, a microcontroller, a signal generator, etc., which can generate an excitation signal suitable for the operation of the resolver. These signals are usually sinusoidal waves, square waves or other forms of periodic electrical signals, depending on the design requirements and application scenarios of the resolver. The excitation signal generation module, the reference adjustment module, and the gain adjustment module are connected in series in sequence. The signal generated by the excitation signal generation module is first transmitted to the reference adjustment module. The reference adjustment module is used to adjust the midpoint value of the excitation signal. The signal adjusted by the reference adjustment module is further transmitted to the gain adjustment module. The gain adjustment module is used to adjust the amplitude of the excitation signal to meet the input requirements of the resolver. The gain adjustment module adjusts according to different gain requirements. The output end of the gain adjustment module is connected to the input end of the resolver through a driving module. The driving module is mainly used to convert the signal-level resolver excitation signal into a signal with current driving ability and input it into the resolver to ensure the normal operation of the resolver.

[0051] The output terminal of the resolver is connected to the control module through the sine-cosine signal processing module. The resolver generates corresponding sine-cosine output signals according to the input excitation signal, and these signals are transmitted to the control module through the sine-cosine signal processing module. The sine-cosine signal processing module filters, amplifies, and processes the signals output by the resolver to ensure the quality and accuracy of the signals. The processed sine-cosine signals are finally transmitted to the control module to obtain the actual voltage maximum value and the actual voltage center value. The excitation signal generation module, the reference adjustment module, and the gain adjustment module are all connected to the control module. It is used to obtain the theoretical voltage maximum value and the theoretical voltage center value by adjusting the reference value of the signal and the amplification value of the gain adjustment module on the basis of the excitation signal output by the excitation signal generation module. Specifically, the control module first calculates the theoretical voltage maximum value and the theoretical voltage center value according to the reference value provided by the reference adjustment module and the amplification value of the gain adjustment module. Then, these theoretical values are compared with the voltage maximum value and the voltage center value actually collected from the resolver. According to the comparison result, the control module dynamically adjusts the reference value of the reference adjustment module and the amplification factor of the gain adjustment module, so as to realize the adaptive adjustment of the excitation signal. This closed-loop control system can respond to the actual output of the resolver in real time, automatically adjust the parameters of each module, and ensure that the excitation signal is always in good condition. By adaptively adjusting the resolver excitation signal, the errors occurring in the decoding system when analyzing the rotational speed and angle can be effectively reduced, and the accuracy and stability of the system can be improved. In summary, through this adaptive system, the precise control and signal processing of the resolver excitation signal can be realized, the compatibility and adaptability of the system can be improved, and it is applicable to various application scenarios of resolvers with different types and specifications. In this way, not only can the requirements of high-precision control be met, but also the overall performance and reliability of the system can be improved.

[0052] In one embodiment, the reference adjustment module includes reference circuits corresponding to multiple reference values; the multiple reference circuits are connected in parallel, and each reference circuit is provided with a first conduction control switch, and each first conduction control switch is connected to the control module; the input end of each reference circuit is connected to the output end of the excitation signal generation module, and the output end of each reference circuit is connected to the input end of the gain adjustment module through the first conduction control switch.

[0053] In this embodiment, the reference adjustment module includes a plurality of reference circuits corresponding to a plurality of reference values. These reference circuits are used to provide different reference voltages or reference signals to adapt to different application requirements and operating environments. The plurality of reference circuits are connected in parallel. Through the circuit structure, a specific reference voltage or reference signal is generated. These reference circuits are connected in parallel and can provide a variety of different reference values simultaneously. A first conduction control switch is provided on each reference circuit, and each first conduction control switch is connected to the control module. By controlling the conduction or disconnection of the first conduction control switch, a specific value is provided to meet the requirements of the system in different operating states. Specifically, when a certain reference circuit needs to be selected, the control module sends a corresponding control signal to make the corresponding first conduction control switch conduct, connecting the corresponding reference circuit. The output end of each reference circuit is connected to the input end of the gain adjustment module through the first conduction control switch. When the control module selects a certain reference circuit, the corresponding first conduction control switch conducts, and the output signal of the reference circuit is transmitted to the input end of the gain adjustment module through the conduction switch. The gain adjustment module receives the signal adjusted by the reference adjustment module and further adjusts the amplitude of the signal to meet the requirements of the resolver. The reference adjustment module ensures the stability and adaptability of the excitation signal. Through a plurality of parallel reference circuits and controllable conduction switches, a suitable reference voltage or signal can be selected according to different operating states and environmental conditions, thereby improving the reliability and adaptability of the system. The control module realizes the adaptive adjustment of the excitation signal by monitoring and adjusting the states of each reference circuit in real time, ensuring that the resolver can work properly under various complex conditions. In this way, the reference adjustment module not only improves the flexibility and adaptability of the system, but also enhances the stability of the overall system.

[0054] Further, the reference adjustment module at least adopts one of the operation forms of in-phase addition operation, anti-phase addition operation or subtraction operation.

[0055] In this embodiment, the reference adjustment module in the adaptive system is responsible for adjusting and stabilizing the excitation signal to ensure the normal operation and accurate control of the resolver. To achieve this goal, the reference adjustment module at least adopts one of the operation forms of in-phase addition operation, anti-phase addition operation or subtraction operation. These operation forms have their own characteristics and application scenarios. Through reasonable selection and configuration, effective signal processing and adjustment can be achieved. Specifically, the in-phase addition operation is a basic signal processing operation form. In this operation form, the voltage values of multiple input signals are added and transmitted to the output end. This operation form is usually applied to situations where multiple signals need to be superimposed to enhance the signal strength. The in-phase addition operation is usually implemented by an operational amplifier. Through the feedback circuit and input resistance, the stability and accuracy of the signal are ensured. For the reference adjustment module, the in-phase addition operation can be used to superimpose reference voltages or signals from different sources to generate a comprehensive reference signal for subsequent signal adjustment and processing. The anti-phase addition operation not only adds the voltage values of multiple input signals, but also performs an inverting process on one or more of the signals. This operation form is usually applied to situations where signal phase adjustment or reverse processing is required. The anti-phase addition operation is also implemented by an operational amplifier. By using the inverting input terminal and the feedback circuit, the inverting and adding processing of the input signal is achieved. In the reference adjustment module, the anti-phase addition operation can be used to generate an inverted reference signal, thereby enhancing the flexibility and diversity of signal adjustment.

[0056] The subtraction operation is a basic and commonly used operation form for differential processing of input signals. The subtraction operation generates a difference signal by subtracting the voltage values of two or more signals. This operation form is usually applied to situations where signal differences need to be measured or common-mode noise needs to be eliminated. The subtraction operation is usually implemented by a differential amplifier. Through precisely matched input resistors and feedback resistors, the accuracy and stability of the signal are ensured. In the reference adjustment module, the subtraction operation can be used to generate a differential reference signal, thereby improving the accuracy and stability of signal adjustment. The reference adjustment module achieves precise signal adjustment and processing by adopting one or more of the operation forms of in-phase addition operation, anti-phase addition operation or subtraction operation. These operation forms not only enhance the flexibility and diversity of signal adjustment, but also improve the stability and reliability of the system. By reasonably selecting and configuring the operation forms, the reference adjustment module can provide a stable and high-quality reference signal under various working conditions, providing a solid foundation for subsequent gain adjustment and signal processing. In addition, the reference adjustment module can also adopt a combination of different operation forms. By combining the in-phase addition operation, anti-phase addition operation and subtraction operation, more complex and diverse signal processing functions can be achieved. This combined application not only improves the accuracy and effect of signal adjustment, but also enhances the adaptability and expandability of the system, ensuring the stable operation of the adaptive system in various complex and changeable working environments.

[0057] For the gain adjustment module, in one embodiment, the gain adjustment module includes multiple amplifier circuits corresponding to different amplification factors; the multiple amplifier circuits are connected in parallel, and each amplifier circuit is provided with a second conduction control switch, and each second conduction control switch is connected to the control module; the input end of each amplifier circuit is connected to the output end of the reference adjustment module, and the output end of each amplifier circuit is connected to the input end of the drive module through the second conduction control switch.

[0058] In this embodiment, the gain adjustment module adjusts the amplitude of the excitation signal to meet the input requirements of the resolver. The gain adjustment module includes multiple amplifier circuits corresponding to different amplification factors, and these amplifier circuits are designed to provide different gain values to meet different application requirements. The multiple amplifier circuits are connected in parallel. Exemplarily, these amplifier circuits can be composed of components such as operational amplifiers, feedback resistors, and capacitors, and the required amplification factor is achieved through circuit parameters. Through the parallel connection, amplifier circuits with different amplification factors can exist in the system simultaneously, providing multiple gain options to ensure the flexibility and adaptability of the system. Each amplifier circuit is provided with a second conduction control switch. Each second conduction control switch is connected to the control module. The second conduction is driven by a control signal issued by the control module. The control module selects a suitable amplifier circuit according to the real-time detected signal and system requirements, and makes the corresponding second conduction control switch conduct by sending a control signal, thereby connecting the corresponding amplifier circuit.

[0059] The input end of each amplifier circuit is connected to the output end of the reference adjustment module. The reference adjustment module transmits the adjusted and stabilized excitation signal to the gain adjustment module, where further amplitude adjustment is performed. Through this connection method, it is ensured that the signal output by the reference adjustment module can be received and processed by different amplifier circuits. The output end of each amplifier circuit is connected to the input end of the drive module through the second conduction control switch. When the control module selects a certain amplifier circuit, the corresponding second conduction control switch conducts, and the output signal of this amplifier circuit is transmitted to the input end of the drive module through the conducting switch. The drive module receives the signal amplified by the gain adjustment module and further enhances the current driving ability of the signal to ensure the normal operation of the resolver. The gain adjustment module ensures that the amplitude of the excitation signal can be adjusted according to different working conditions. Through multiple parallel amplifier circuits and controllable conduction switches, an appropriate gain can be flexibly selected to adapt to different resolvers and working environments. The control module realizes the adaptive adjustment of the excitation signal by real-time monitoring and adjusting the states of each amplifier circuit, ensuring the stable operation of the system under various complex conditions.

[0060] Exemplarily, such as Figure 2 、 Figure 3 andFigure 4 As shown, where Figure 2 This is a schematic diagram of the resolver excitation signal waveform provided by the embodiment of the present application. It is a schematic diagram of one form of the resolver excitation signal output by the excitation signal generation module. After inputting this resolver excitation signal into the reference adjustment module U2, the output signal is as Figure 3 shown. It can be seen that the function of the reference adjustment module U2 is to adjust the midpoint value of the resolver excitation signal ( Figure 3 dotted line), so that the entire signal moves up and down as a whole. Then, this signal is input into the gain adjustment module U3. After being processed by the gain adjustment module U3, the output signal is as Figure 4 shown. It can be seen that the function of the gain adjustment module U3 is to adjust the maximum voltage value of the resolver excitation signal ( Figure 4 the difference between the two dotted lines in), so that the entire signal is amplified or reduced as a whole.

[0061] In a specific embodiment, the reference adjustment module includes a first operational amplifier and multiple reference voltage branches corresponding to multiple reference values; a first conduction control switch is serially connected to each reference voltage branch, and multiple reference voltage branches are connected in parallel. The positive input terminal of the first operational amplifier is connected to the output terminal of each first conduction control switch through a resistor; the excitation signal generation module, the resistor, and the negative input terminal of the first operational amplifier are serially connected in sequence, and the output terminal of the first operational amplifier is connected to the gain adjustment module; the control module is connected to each first conduction control switch.

[0062] In this embodiment, the reference adjustment module is composed of a first operational amplifier and multiple reference voltage branches corresponding to multiple reference values, aiming to provide a stable and adjustable reference voltage. The multiple reference voltage branches of the reference adjustment module correspond to different reference values respectively. These reference voltage branches are connected in parallel so that the system can select a suitable reference voltage under different working conditions. A first conduction control switch is serially connected to each reference voltage branch, and these control switches are responsible for selectively connecting the corresponding reference voltage branch into the circuit. Exemplarily, the reference voltage branch can be composed of components such as resistors, capacitors, zener diodes, or reference voltage sources to be able to provide a stable and accurate reference voltage. The positive input terminal of the first operational amplifier is connected to the output terminal of each first conduction control switch through a resistor, ensuring that when a certain first conduction control switch is turned on, the corresponding reference voltage can be transmitted to the positive input terminal of the first operational amplifier through the resistor. The function of this resistor is to limit the current and stabilize the voltage to ensure the stability of the input signal.

[0063] The output terminal of the excitation signal generation module is connected to the negative input terminal of the first operational amplifier through a resistor. This connection method enables the excitation signal to be transmitted to the first operational amplifier after preliminary adjustment. The role of the resistor is also to limit the current and stabilize the signal, so that the signal input to the operational amplifier has an appropriate amplitude and stability. The excitation signal and the reference voltage signal are compared and adjusted in the first operational amplifier. The output terminal of the first operational amplifier is connected to the gain adjustment module, and the adjusted signal is transmitted to the gain adjustment module for further processing. The first operational amplifier operates on the input excitation signal and the selected reference voltage, and outputs an adjusted signal whose characteristics can meet the input requirements of the gain adjustment module. The control module is connected to each first conduction control switch and controls the conduction state of each first conduction control switch. By the control signal sent by the control module, different reference voltage branches can be selectively connected to the circuit, thereby realizing the adjustment of the reference voltage. The control module dynamically adjusts the state of the first conduction control switch according to the working state of the system and the feedback signal. Through the above settings, the reference adjustment module can flexibly select and adjust the reference voltage to ensure the stability and adaptability of the excitation signal. The coordinated operation of the first operational amplifier and multiple reference voltage branches enables the system to automatically adjust the reference voltage under different working conditions, thereby improving the reliability and performance of the system. In this way, the reference adjustment module not only enhances the flexibility of the adaptive system, but also provides a stable working environment for the resolver, ensuring its normal operation under various complex conditions.

[0064] Exemplarily, Figure 5 is a schematic structural diagram of the reference adjustment module provided by an embodiment of the present application. As Figure 5 shown, the first conduction control switch uses a P-type semiconductor field effect transistor. The source electrode of the P-type semiconductor field effect transistor is connected to the reference voltage branch, the drain electrode is connected to the positive input terminal of the first operational amplifier through a resistor, and the gate electrode is connected to the control module.

[0065] In this embodiment, the first conduction control switch uses a P-type semiconductor field effect transistor. The purpose of this selection is to utilize its conduction characteristics to control the reference voltage branch by controlling its gate voltage. A P-type semiconductor field effect transistor (P-MOSFET) conducts when its source voltage is higher than its gate voltage. In a specific implementation, the source of each P-type semiconductor field effect transistor is connected to the corresponding reference voltage branch. When the P-MOSFET conducts, the voltage in the reference voltage branch is transmitted to the drain. The drain of the P-type semiconductor field effect transistor is connected to the non-inverting input terminal of the first operational amplifier through a resistor. The purpose of this connection method is to use the resistor to limit the current and stabilize the voltage, ensuring that the signal transmitted to the operational amplifier has a stable amplitude and characteristics. When the P-MOSFET conducts, the reference voltage is transmitted through the drain, reaches the non-inverting input terminal of the first operational amplifier through the resistor, and participates in the operation of the operational amplifier. The gate of each P-type semiconductor field effect transistor is connected to the control module, and the control module is responsible for sending control signals to adjust the gate voltage.

[0066] The control module is implemented using a microcontroller (Microcontroller Unit, abbreviated as: MCU) or other control units. According to the feedback and working status of the system, it dynamically adjusts the gate voltage to control the conduction state of the P-MOSFET. When the control module outputs a low-level signal, the gate voltage of the P-MOSFET is lower than the source voltage, causing the P-MOSFET to conduct, and the voltage of the reference voltage branch is transmitted to the operational amplifier. When the control module outputs a high-level signal, the gate voltage of the P-MOSFET is higher than the source voltage, and the P-MOSFET is turned off, disconnecting the reference voltage branch from the operational amplifier. The application of the P-type semiconductor field effect transistor enables the reference adjustment module to have switch control capabilities, realizing flexible management and switching of multiple reference voltage branches. It improves the flexibility and adaptability of the system, ensuring the stability and reliability of the excitation signal under various conditions. In summary, through the above structural settings, different reference voltages can be flexibly selected and adjusted to adapt to different working conditions and requirements. The control module selectively conducts the corresponding P-MOSFET according to the actual situation, enabling the corresponding reference voltage to enter the operational amplifier for operation, thereby realizing the adjustment of the excitation signal. In this way, the reference adjustment module can not only provide a stable reference voltage but also dynamically adjust according to the system requirements to ensure the stable operation of the resolver under various complex conditions.

[0067] Based on the above embodiments, the specific connection relationship of the circuit is as follows: After the resolver excitation signal passes through the resistor R1, it is input to the negative-phase input terminal of the operational amplifier. The negative-phase input terminal of the operational amplifier is also connected to its output terminal through the resistor R3. The first reference voltage forms a branch with the P-type semiconductor field effect transistor Q1; the second reference voltage forms a branch with the P-type semiconductor field effect transistor Q2; and so on, the m-th reference voltage forms a branch with the P-type semiconductor field effect transistor Qm. These branches are all connected to the positive-phase input terminal of the first operational amplifier through the resistor R2. The output terminal of the operational amplifier is connected to the gain adjustment module U3, and the P-type semiconductor field effect transistors Q1, Q2, etc. are all connected to the MCU. The resistance values of the resistor R1, the resistor R2, and the resistor R3 are equal, and the center point voltage is adjusted by selecting the reference voltage at the in-phase input terminal.

[0068] In a specific embodiment, the gain adjustment module includes a second operational amplifier and multiple amplification branches corresponding to amplification multiples; a second resistor and a second conduction control switch are sequentially connected in series on each amplification branch. The other end of each second conduction control switch is connected to the negative-phase input terminal of the second operational amplifier, and the other end of each second conduction control switch is also connected to the output terminal of the second operational amplifier through a first resistor. The other end of each second resistor is grounded; the output terminal of the reference adjustment module, the resistor, and the positive-phase input terminal of the second operational amplifier are sequentially connected in series. The output terminal of the second operational amplifier is connected to the drive module; the control module is connected to each second conduction control switch.

[0069] In this embodiment, the gain adjustment module includes a second operational amplifier and multiple amplification branches corresponding to different amplification factors. By selecting different amplification branches, flexible adjustment of the signal amplitude can be achieved, ensuring stability and adaptability under different working conditions. The second operational amplifier is used to amplify the signal output by the reference adjustment module. The multiple amplification branches corresponding to different amplification factors are connected in parallel in the gain adjustment module. A second resistor and a second conduction control switch are sequentially connected in series on each amplification branch. The design of these amplification branches enables different amplification factors to be achieved by selecting different resistance values and conduction control switches, thus meeting different gain requirements. The other end of each second conduction control switch is connected to the negative input terminal of the second operational amplifier. Through this connection method, when the second conduction control switch is turned on, the corresponding amplification branch is activated, and the second resistor will affect the negative feedback loop of the operational amplifier, thereby determining the amplification factor. Specifically, the value of the second resistor will determine the magnitude of the amplification factor, that is, multiple amplification factors can be achieved by selecting different resistance values to meet different signal amplification requirements. At the same time, the other end of the second conduction control switch is also connected to the output terminal of the second operational amplifier through a first resistor. The function of the first resistor is to limit the current and stabilize the feedback signal, ensuring the stability and linearity of the operational amplifier. The other end of each second resistor is grounded, and this design ensures the normal working path of the amplification circuit, enabling the amplifier to accurately transmit and amplify the signal in the conduction state.

[0070] The output terminal of the reference adjustment module is connected to the positive input terminal of the second operational amplifier through a resistor, ensuring that the signal that has been stabilized and adjusted by the reference adjustment module can be input into the gain adjustment module for further amplification. The function of the resistor is to limit the current of the input signal, ensuring that the signal maintains a stable amplitude and characteristics during transmission. The output terminal of the second operational amplifier is connected to the drive module. The amplified signal is output from the operational amplifier and transmitted to the drive module. The control module is connected to each second conduction control switch and is responsible for controlling the conduction state of these switches. By means of the control signal sent by the control module, different amplification branches can be selectively turned on, thereby achieving adjustment of the signal amplification factor. The control module dynamically adjusts the state of the second conduction control switch according to the working state of the system and the feedback signal to ensure that the system can maintain stable and efficient operation under various working conditions. Through the gain adjustment module, the amplification factor of the signal can be flexibly selected and adjusted to ensure that the amplitude of the excitation signal is within the preset range, thereby ensuring the normal operation of the resolver. The collaborative work of the second operational amplifier and multiple amplification branches enables the system to automatically adjust the gain under different working conditions to meet different application requirements. In this way, the gain adjustment module not only improves the adaptability and flexibility of the system, but also enhances the stability and performance of the overall system.

[0071] Exemplarily, Figure 6This is a schematic structural diagram of the gain adjustment module provided by the embodiments of the present application. As Figure 6 shown, the second conduction control switch uses an N-type semiconductor field effect transistor; the source of the N-type semiconductor field effect transistor is connected to the negative input terminal of the second operational amplifier, the drain is grounded through a second resistor, and the gate is connected to the control module.

[0072] In the gain adjustment module, the second conduction control switch uses an N-type semiconductor field effect transistor (i.e., N-MOSFET). The purpose of this selection is to utilize its fast response and efficient switching characteristics. By controlling its gate voltage, the control of the amplification branch is achieved. The N-type semiconductor field effect transistor conducts when its gate voltage is higher than the source voltage. The source of each N-type semiconductor field effect transistor is connected to the negative input terminal of the second operational amplifier. This connection method ensures that when the N-MOSFET conducts, the amplification branch is activated, and the corresponding signal can be processed by the amplification circuit. Connecting the source to the negative input terminal of the operational amplifier causes the N-MOSFET to connect the resistor between the negative input terminal and the ground when it conducts, participating in the regulation of the feedback loop. The drain of the N-type semiconductor field effect transistor is grounded through a second resistor. Connecting the drain to the ground through the second resistor limits the magnitude of the current and ensures the integrity of the signal path. The value of the second resistor determines the gain of the amplification circuit. By selecting different resistor values, different amplification multiples can be achieved to meet different signal amplification requirements. When the N-MOSFET conducts, the negative input terminal is grounded through the drain and the second resistor, forming a complete feedback loop to achieve signal amplification. The gate of the N-type semiconductor field effect transistor is connected to the control module. The control module adjusts the gate voltage of the N-MOSFET by outputting a control signal, thereby controlling its conduction state. When the control module outputs a high-level signal, the gate voltage is higher than the source voltage, and the N-MOSFET conducts; when the control module outputs a low-level signal, the gate voltage is lower than the source voltage, and the N-MOSFET is cut off. In this way, the control module can control the conduction and cut-off states of each amplification branch, thereby achieving dynamic control of the gain adjustment module. Through the above settings, different amplification branches can be flexibly selected and adjusted to adapt to different working conditions and requirements. The control module selectively conducts the corresponding N-MOSFET according to the real-time detected signal and system requirements, enabling the corresponding amplification branch to enter the working state, thereby achieving the adjustment of the signal amplification multiple. This design not only improves the adaptability and flexibility of the system but also enhances the accuracy and stability of signal processing.

[0073] Based on the above embodiments, the specific connection relationship of the circuit: the output terminal of the reference adjustment module U2 is connected to the non-inverting input terminal of the operational amplifier T2 through the resistor R4. Multiple output terminals of the MCU are respectively connected to the gates of the N-type semiconductor field effect transistors Qm1, Qm2 to Qmn. The sources of the N-type semiconductor field effect transistors Qm1, Qm2 to Qmn are respectively grounded through the resistors Rm1, Rm2 to Rmn. The drains of the N-type semiconductor field effect transistors Qm1, Qm2 to Qmn are connected to a common node, and this node is connected to the inverting input terminal and the output terminal of the operational amplifier T2 through the resistor R5. The output terminal of the operational amplifier T2 is connected to the input terminal of the driving module U4. Regarding the calculation of the amplification factor, the formula is used:

[0074]

[0075] where n = 1, 2... n, that is, the amplification factor corresponds to the resistors on the selected branches. Similarly, when the amplification factor has been determined and it is necessary to adjust the current amplification factor to the determined amplification factor, the above formula can be used to calculate the resistors of the branches that need to be selected, and then the branches can be determined.

[0076] In one embodiment, the driving module uses a power amplifier circuit. The driving module further amplifies the signal amplified by the gain adjustment module to a level and current sufficient to drive the resolver. To achieve this function, the driving module uses a power amplifier circuit, which can provide sufficient current driving ability and stable signal output to ensure that the resolver can operate normally under various working conditions. By using a power amplifier circuit, the driving module can effectively enhance the driving ability of the signal and ensure that the resolver can work stably under various complex conditions. The setting of the power amplifier circuit not only improves the adaptability and reliability of the system, but also enhances the signal transmission quality and amplification effect, ensuring that the requirements of the adaptive system for high performance and high stability are met. Exemplarily, the power amplifier circuit generally includes an input signal part, a high-current driving part, and a signal filtering and stabilizing part. Generally speaking, the input signal processing part. The input signal enters the operational amplifier through a resistor, and the operational amplifier amplifies and conditions the signal through a feedback resistor, and the output terminal is connected to the high-current driving part. The high-current driving usually uses an NPN bipolar junction transistor, which conducts under the drive of the signal; and the signal filtering and stabilizing part consists of an inductor and a capacitor, which is used to filter the amplified signal to remove high-frequency noise and ensure the smoothness and stability of the output signal. This power amplifier circuit can effectively receive the signal from the gain adjustment module, amplify it and provide sufficient current to drive the resolver to ensure the stable operation of the system.

[0077] In one embodiment, the sine-cosine signal processing module includes a cosine signal processing unit and a sine signal processing unit; the input ends of the cosine signal processing unit and the sine signal processing unit are both connected to the output end of the resolver, and the output ends of the cosine signal processing unit and the sine signal processing unit are both connected to the control module; wherein, the sine signal processing unit includes a sine filter circuit and a sine operational amplifier circuit, and the cosine signal processing unit includes a cosine filter circuit and a cosine operational amplifier circuit.

[0078] In this embodiment, the sine-cosine signal processing module is responsible for receiving and processing the sine and cosine signals output by the resolver, and transmitting the processed signals to the control module. This ensures that the signals obtained from the resolver can be accurately analyzed and used. The sine-cosine signal processing module includes two main units: the cosine signal processing unit and the sine signal processing unit. The input end of each unit is connected to the output end of the resolver, enabling real-time acquisition of the resolver's output signal, ensuring the timeliness and accuracy of signal processing. The input end of the cosine signal processing unit is connected to the output end of the resolver for receiving the cosine signal output by the resolver. The cosine signal processing unit includes a cosine filter circuit and a cosine operational amplifier circuit. The main function of the cosine filter circuit is to filter the cosine signal, removing noise and interference in the signal to ensure the purity and stability of the signal. The filtered signal is transmitted to the cosine operational amplifier circuit, which amplifies and conditions the signal to provide a signal with an appropriate amplitude and stability to the control module.

[0079] Similarly, the input end of the sine signal processing unit is connected to the output end of the resolver for receiving the sine signal output by the resolver. The sine signal processing unit includes a sine filter circuit and a sine operational amplifier circuit. The sine filter circuit filters the sine signal, removing noise and interference to ensure signal stability. The filtered signal is transmitted to the sine operational amplifier circuit, which amplifies and conditions the signal to provide a signal with an appropriate amplitude and stability to the control module. The output ends of the cosine signal processing unit and the sine signal processing unit are both connected to the control module. The processed and amplified cosine and sine signals are transmitted to the control module, and the control module analyzes these signals to adjust the working state and parameters of the system in real time. The control module uses these processed signals for angle and speed calculations to ensure that the system can achieve high-precision control. Through the sine-cosine signal processing module, a solid signal foundation is provided for the high-precision control of the system, ensuring that the resolver can operate normally under various complex conditions.

[0080] An embodiment of the present application provides an electronic device. The electronic device includes the adaptive system described in the above embodiment.

[0081] Since the processing and functions implemented by the electronic device in this embodiment are basically corresponding to the embodiments, principles, and examples of the foregoing adaptive system, for the details not described in the description of this embodiment, reference can be made to the relevant descriptions in the foregoing embodiments, which will not be elaborated here.

[0082] Further, according to an embodiment of the present application, a vehicle corresponding to the electronic device is also provided. The vehicle includes the above-mentioned electronic device.

[0083] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0084] The embodiments or implementation manners in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0085] It should be noted that the "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the embodiments may include specific features, structures, or characteristics, but not necessarily each embodiment includes the specific features, structures, or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining an embodiment to describe a specific feature, structure, or characteristic, it is within the knowledge scope of those skilled in the art to implement such a feature, structure, or characteristic in combination with other embodiments, whether explicitly or implicitly described.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An adaptive system based on a rotary transformer, characterized in that: The adaptive system includes an excitation signal generating module, a reference adjusting module, a gain adjusting module, and a control module; The excitation signal generating module, the reference adjusting module, and the gain adjusting module are sequentially connected in series, the output end of the gain adjusting module is connected to the input end of the rotary transformer through the driving module, and the output end of the rotary transformer is connected to the control module through the sine-cosine signal processing module; The excitation signal generating module, the reference adjusting module and the gain adjusting module are all connected to the control module.

2. The adaptive system according to claim 1, characterized in that: The reference adjustment module includes a reference circuit corresponding to a plurality of reference values; A plurality of the reference circuits are connected in parallel, each of the reference circuits is provided with a first conduction control switch, and each of the first conduction control switches is connected to the control module; The input end of each of the reference circuits is connected to the output end of the excitation signal generating module, and the output end of each of the reference circuits is connected to the input end of the gain adjusting module through the first conduction control switch.

3. The adaptive system according to claim 1, characterized in that: The gain adjustment module includes a plurality of amplification circuits corresponding to a plurality of amplification factors; A plurality of the amplifying circuits are connected in parallel, each of the amplifying circuits is provided with a second conduction control switch, and each of the second conduction control switches is connected to the control module; The input end of each amplifier circuit is connected to the output end of the reference adjustment module, and the output end of each amplifier circuit is connected to the input end of the driving module through the second conduction control switch.

4. The adaptive system according to claim 2, characterized in that: The reference adjustment module includes a first operational amplifier and a reference voltage branch corresponding to a plurality of reference values; Each of the reference voltage branches is connected in series with a first conduction control switch, and a plurality of the reference voltage branches are connected in parallel, and a non-inverting input terminal of the first operational amplifier is connected to an output terminal of each of the first conduction control switches through a resistor; The excitation signal generating module, the resistor and the negative phase input terminal of the first operational amplifier are connected in series in sequence, and the output terminal of the first operational amplifier is connected to the gain adjustment module; The control module is connected to each of the first conduction control switches.

5. The adaptive system according to claim 4, characterized in that: The first conduction control switch adopts a P-type semiconductor field effect transistor; The source of the P-type semiconductor field effect transistor is connected to the reference voltage branch, the drain is connected to the non-inverting input terminal of the first operational amplifier through a resistor, and the gate is connected to the control module.

6. The adaptive system according to claim 3, characterized in that: The gain adjustment module includes a second operational amplifier and amplification branches corresponding to a plurality of amplification factors; Each of the amplifying branches is sequentially connected in series with a second resistor and a second conduction control switch, the other end of each of the second conduction control switches is connected to the negative phase input end of the second operational amplifier, and the other end of the second conduction control switch is connected to the output end of the second operational amplifier through the first resistor, and the other end of each of the second resistors is grounded; The output end of the reference adjustment module, the resistor and the non-inverting input end of the second operational amplifier are connected in series in sequence, and the output end of the second operational amplifier is connected to the driving module; The control module is connected to each of the second conduction control switches.

7. The adaptive system according to claim 6, characterized in that: The second conduction control switch adopts an N-type semiconductor field effect transistor; The source of the N-type semiconductor field effect transistor is connected to the negative phase input terminal of the second operational amplifier, the drain is grounded through the second resistor, and the gate is connected to the control module.

8. The adaptive system according to any one of claims 1 to 6, characterized in that: The driving module adopts a power amplifier circuit; The sine-cosine signal processing module includes a cosine signal processing unit and a sine signal processing unit; The input ends of the cosine signal processing unit and the sine signal processing unit are both connected to the output end of the rotary transformer, and the output ends of the cosine signal processing unit and the sine signal processing unit are both connected to the control module; wherein the sine signal processing unit includes a sine filter circuit and a sine operational amplifier circuit, and the cosine signal processing unit includes a cosine filter circuit and a cosine operational amplifier circuit.

9. The adaptive system according to claim 1 or 2, characterized in that: The reference adjustment module adopts at least one operation form of in-phase addition operation, anti-phase addition operation or subtraction operation.

10. An electronic device, characterized in that: Comprising an adaptive system as described in any one of claims 1-9.

Images