Drive control system of rotary transformer and drive control method thereof

Abstract

The invention discloses a driving control system of a rotary transformer and a driving control method thereof. The driving control method comprises the following steps: driving a main control module to issue a control signal; the signal generation module receives the control signal and generates an excitation signal according to the control signal; the signal coupling module performs resonance matching on the excitation signal to generate a resonance enhancement signal; driving the main control module to acquire the resonance enhancement signal, and when the resonance enhancement signal does not reach the target state, dynamically adjusting the control signal until the regenerated adjustment resonance enhancement signal reaches the target state; and the signal coupling module transmits the signal reaching the target state to the rotary transformer to drive the rotary transformer to work. When different types of rotary transformers are coped with, it can be ensured that a large voltage amplitude is obtained after weak signal input is corrected, the functionality of the different types of rotary transformers is fully ensured, the universality of a rotary transformer driving system is improved, and the circuit design complexity and cost during multi-scene application can be effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of frequency conversion drive, and more specifically to a drive control system and drive control method for a rotary transformer. Background Technology

[0002] Rotary transformers, as high-precision angle and velocity sensing elements, are widely used in industrial servo systems, new energy vehicle electronic control units, aerospace attitude control systems, and other fields with stringent requirements for sensing accuracy and stability. Their operation relies on a stable excitation drive signal, and the performance of the excitation drive circuit directly determines the sensing accuracy of the rotary transformer and the reliability of the system operation. In existing technologies, the excitation drive of a resolver is often implemented using a dedicated integrated circuit (such as the AD2S1205 resolver-to-digital converter chip) paired with a power amplifier circuit. However, this driving method has a key technical problem in practical applications: the excitation signal parameters (such as amplitude and frequency) of integrated circuits like the AD2S1205 have a limited range of adaptability, making it unable to adaptively match resolvers of different models and turns ratios. This results in poor versatility and increases the complexity and cost of circuit design in multi-scenario applications. Currently, there is no effective solution to address the above problems. Therefore, there is an urgent need for a highly reliable and versatile rotary transformer drive control technology to overcome the shortcomings of existing technologies. Summary of the Invention

[0003] In view of this, the present invention provides a drive control system and a drive control method for a rotary transformer to solve the problem that existing rotary transformer drive systems cannot adaptively adapt to diverse rotary transformers.

[0004] This invention provides a drive control system for a rotary transformer, the system comprising: The main control module is driven to send control signals. The signal generation module is electrically connected to the output terminal of the drive main control module and is used to receive the control signal and generate an excitation signal according to the control signal. The signal coupling module is electrically connected to the output terminal of the signal generation module, and electrically connected to the input terminal of the drive main control module and the rotary transformer. It is used to perform resonance matching on the excitation signal generated by the signal generation module to generate a resonance enhancement signal. The drive control module is further configured to acquire the resonant enhancement signal generated by the signal coupling module, and dynamically adjust the control signal when the resonant enhancement signal has not reached the target state. It then sends the dynamically adjusted control signal to the signal generation module, using the adjustment control signal to regenerate the adjusted resonant enhancement signal sequentially through the signal generation module and the signal coupling module, until the adjusted resonant enhancement signal reaches the target state. The target state refers to the amplitude of the resonant enhancement signal or the adjusted resonant enhancement signal reaching the amplitude of the given excitation signal of the rotary transformer. The signal coupling module is further configured to transmit the resonant enhancement signal or the adjusted resonant enhancement signal that has reached the target state to the rotary transformer to drive the rotary transformer to operate.

[0005] Optionally, the signal coupling module includes a first coupling capacitor group composed of multiple first coupling capacitors connected in parallel; the matching capacitor corresponding to the first coupling capacitor group satisfies the preset resonance matching condition of the rotary transformer; The first parallel terminals of all the first coupling capacitors are electrically connected to the output terminal of the signal generation module, and the second parallel terminals of all the first coupling capacitors are electrically connected to the input terminal of the drive main control module and the rotary transformer. The first coupling capacitor bank is used to form a series resonant circuit with the excitation winding in the rotary transformer. When the matching capacitor meets the preset resonant matching conditions, the excitation signal generated by the signal generation module is resonantly enhanced, resulting in a resonant enhanced signal with increased amplitude.

[0006] Optionally, both the control signal and the update control signal are specifically digital signals; The signal generation module includes a digital-to-analog converter circuit, an operational amplifier circuit, and a buffer push-pull circuit; The input terminal of the digital-to-analog converter circuit is electrically connected to the output terminal of the drive main control module, and the output terminal of the digital-to-analog converter circuit is electrically connected to the first parallel terminal of all the first coupling capacitors in sequence through the operational amplifier circuit and the buffer push-pull circuit. The digital-to-analog converter circuit is used to receive the control signal output by the drive main control module and convert the control signal into an analog voltage signal; it is also used to receive the adjustment control signal output by the drive main control module and convert the adjustment control signal into the analog voltage signal when the resonant enhancement signal has not reached the target state. The operational amplifier circuit is used to amplify the analog voltage signal; The buffer push-pull circuit is used to perform impedance matching on the amplified analog voltage signal and to enhance the power of the impedance-matched analog voltage signal to obtain the excitation signal.

[0007] Optionally, the signal generation module further includes a second coupling capacitor; The first end of the second coupling capacitor is electrically connected to the output terminal of the digital-to-analog converter circuit, and the second end of the second coupling capacitor is electrically connected to the input terminal of the operational amplifier circuit. The second coupling capacitor is used to receive the analog voltage signal output by the digital-to-analog converter circuit and to block DC from the analog voltage signal.

[0008] Optionally, the operational amplifier circuit includes a first operational amplifier U16A, a first resistor R85, a second resistor R88, a third resistor R89, a fourth resistor R90, a first capacitor C117, a second capacitor C112, and a third capacitor C113. The positive power supply pin of the first operational amplifier U16A is electrically connected to the +15V power supply terminal. The first terminal of the second capacitor C112 is connected to the common connection between the positive power supply pin of the first operational amplifier U16A and the +15V power supply terminal, and the second terminal of the second capacitor C112 is grounded. The negative power supply pin of the first operational amplifier U16A is electrically connected to the -15V power supply terminal. The first terminal of the third capacitor C113 is connected to the common connection between the negative power supply pin of the first operational amplifier U16A and the -15V power supply terminal, and the second terminal of the third capacitor C113 is grounded. The positive input pin of the first operational amplifier U16A is electrically connected to the output terminal of the digital-to-analog converter circuit through the fourth resistor R90. The first end of the third resistor R89 ​​is connected to the common connection between the fourth resistor R90 and the output terminal of the digital-to-analog converter circuit, and the second end of the third resistor R89 ​​is grounded; the first end of the first capacitor C117 is connected to the common connection between the first operational amplifier U16A and the fourth resistor R90, and the second end of the first capacitor C117 is grounded; the inverting input pin of the first operational amplifier U16A is grounded through the second resistor R88, and the inverting input pin of the first operational amplifier U16A is also electrically connected to the output pin of the first operational amplifier U16A through the first resistor R85, and the output pin of the first operational amplifier U16A is electrically connected to the input terminal of the buffer push-pull circuit.

[0009] Optionally, the buffer push-pull circuit includes a second operational amplifier U16B, a first transistor Q1, a second transistor Q2, a fifth resistor R83, and a sixth resistor R91; The collector of the first transistor Q1 is electrically connected to the +15V power supply terminal, and the collector of the second transistor Q2 is electrically connected to the -15V power supply terminal. The emitters of the first transistor Q1 and the second transistor Q2 are connected together and electrically connected to the inverting input pin of the second operational amplifier U16B through the fifth resistor R83. The common connection terminal between the emitters of the first transistor Q1 and the second transistor Q2 is also electrically connected to the first parallel terminal of all the first coupling capacitors. The bases of the first transistor Q1 and the second transistor Q2 are connected together and electrically connected to the output pin of the second operational amplifier U16B. The non-inverting input pin of the second operational amplifier U16B is electrically connected to the output terminal of the operational amplifier circuit through the sixth resistor R91.

[0010] Optionally, the drive main control module includes a controller and a first acquisition circuit; The input terminal of the first acquisition circuit is electrically connected to the output terminal of the signal coupling module, the output terminal of the first acquisition circuit is electrically connected to the input terminal of the controller, and the output terminal of the controller is electrically connected to the input terminal of the signal generation module. The controller is used to send the control signal; The first acquisition circuit is used to acquire the resonant enhancement signal generated by the signal coupling module, and is also used to acquire the adjusted resonant enhancement signal generated by the signal coupling module when the resonant enhancement signal does not reach the target state; The controller is further configured to receive the resonant enhancement signal transmitted by the first acquisition circuit, and dynamically adjust the control signal when the resonant enhancement signal has not reached the target state, send the adjustment control signal to the signal generation module, and receive the adjusted resonant enhancement signal transmitted by the first acquisition circuit until the adjusted resonant enhancement signal reaches the target state.

[0011] Optionally, the system further includes: The resonance monitoring module is electrically connected to the input terminal of the drive main control module and to the output terminal of the rotary transformer; it is used to acquire the differential voltage signal output by the rotary transformer when the drive main control module dynamically adjusts the control signal. The drive main control module is further configured to receive the differential voltage signal, determine whether the adjusted resonance enhancement signal obtained by the adjustment control signal satisfies the preset resonance matching condition of the rotary transformer based on the differential voltage signal; and when the adjusted resonance enhancement signal does not satisfy the preset resonance matching condition, continue to dynamically adjust the adjustment control signal until the regenerated adjusted resonance enhancement signal simultaneously satisfies the target state and the preset resonance matching condition.

[0012] Optionally, the differential voltage signal includes a sinusoidal differential voltage and a cosine differential voltage; The resonance monitoring module includes a second acquisition circuit for acquiring the sinusoidal differential voltage and a third acquisition circuit for acquiring the cosine differential voltage; The input terminals of the second acquisition circuit and the third acquisition circuit are both electrically connected to the output terminal of the rotary transformer, and the output terminals of the second acquisition circuit and the third acquisition circuit are both electrically connected to the input terminal of the drive main control module.

[0013] Optionally, the output winding of the rotary transformer includes a sine output winding and a cosine output winding; The second acquisition circuit includes a third operational amplifier U13A, a fourth capacitor C86, a fifth capacitor C87, a sixth capacitor C88, a seventh capacitor C92, an eighth capacitor C93, a ninth capacitor C97, a tenth capacitor C98, an eleventh capacitor C120, a twelfth capacitor C90, a seventh resistor R63, an eighth resistor R64, a ninth resistor R65, a tenth resistor R66, an eleventh resistor R67, a twelfth resistor R68, a thirteenth resistor R71, and a fourteenth resistor R72; The positive power supply pin of the third operational amplifier U13A is electrically connected to the +15V power supply terminal. The first terminal of the fourth capacitor C86 is connected to the common connection terminal between the positive power supply pin of the third operational amplifier U13A and the +15V power supply terminal, and the second terminal of the fourth capacitor C86 is grounded. The negative power supply pin of the third operational amplifier U13A is electrically connected to the -15V power supply terminal. The first terminal of the sixth capacitor C88 is connected to the common connection terminal between the negative power supply pin of the third operational amplifier U13A and the -15V power supply terminal, and the second terminal of the sixth capacitor C88 is grounded. The positive input pin of the third operational amplifier U13A is electrically connected to the positive terminal of the sinusoidal output winding through the twelfth resistor R68; the first terminal of the thirteenth resistor R71 is connected to the common connection terminal between the twelfth resistor R68 and the positive terminal of the sinusoidal output winding, and the second terminal of the thirteenth resistor R71 is grounded through the ninth capacitor C97; the first terminals of the eighth capacitor C93 and the eleventh resistor R67 are both connected to the common connection terminal between the positive input pin of the third operational amplifier U13A and the twelfth resistor R68, and the second terminals of the eighth capacitor C93 and the eleventh resistor R67 are both grounded; The inverting input pin of the third operational amplifier U13A is electrically connected to the negative terminal of the sinusoidal output winding via the eighth resistor R64 and the twelfth capacitor C90. The eleventh capacitor C120 is connected in parallel across the twelfth capacitor C90. The first terminal of the fourteenth resistor R72 is connected to the common connection between the twelfth capacitor C90 and the negative terminal of the sinusoidal output winding, and the second terminal of the fourteenth resistor R72 is grounded via the tenth capacitor C98. The first terminal of the tenth resistor R66 is connected to the common connection between the eighth resistor R64 and the twelfth capacitor C90, and the second terminal of the tenth resistor R66 is connected to the common connection between the twelfth resistor R68 and the positive terminal of the sinusoidal output winding. The inverting input pin of the third operational amplifier U13A is also electrically connected to the output pin of the third operational amplifier U13A through the seventh resistor R63, and the fifth capacitor C87 is connected in parallel across the seventh resistor R63; the output pin of the third operational amplifier U13A is electrically connected to the input terminal of the driving main control module through the ninth resistor R65; the first terminal of the seventh capacitor C92 is connected to the common connection terminal between the ninth resistor R65 and the input terminal of the driving main control module, and the second terminal of the seventh capacitor C92 is grounded.

[0014] Optionally, the output winding of the rotary transformer includes a sine output winding and a cosine output winding; The third acquisition circuit includes a fourth operational amplifier U13B, a thirteenth capacitor C99, a fourteenth capacitor C106, a fifteenth capacitor C107, a sixteenth capacitor C108, a seventeenth capacitor C109, an eighteenth capacitor C102, a nineteenth capacitor C121, a fifteenth resistor R75, a sixteenth resistor R76, a seventeenth resistor R77, an eighteenth resistor R78, a nineteenth resistor R79, a twentieth resistor R80, a twenty-first resistor R81, and a twenty-second resistor R82. The positive input pin of the fourth operational amplifier U13B is electrically connected to the positive terminal of the cosine output winding through the twentieth resistor R80; the first end of the twentieth resistor R81 is connected to the common connection terminal between the twentieth resistor R80 and the positive terminal of the cosine output winding, and the second end of the twentieth resistor R81 is grounded through the sixteenth capacitor C108; the first ends of the fifteenth capacitor C107 and the nineteenth resistor R79 are both connected to the common connection terminal between the positive input pin of the fourth operational amplifier U13B and the twentieth resistor R80, and the second ends of the fifteenth capacitor C107 and the nineteenth resistor R79 are both grounded; The inverting input pin of the fourth operational amplifier U13B is electrically connected to the negative terminal of the cosine output winding via the sixteenth resistor R76 and the eighteenth capacitor C102. The nineteenth capacitor C121 is connected in parallel across the eighteenth capacitor C102. The first end of the twenty-second resistor R82 is connected to the common connection between the eighteenth capacitor C102 and the negative terminal of the cosine output winding, and the second end of the twenty-second resistor R82 is grounded via the seventeenth capacitor C109. The first end of the eighteenth resistor R78 is connected to the common connection between the sixteenth resistor R76 and the eighteenth capacitor C102, and the second end of the eighteenth resistor R78 is connected to the common connection between the twentieth resistor R80 and the positive terminal of the cosine output winding. The inverting input pin of the fourth operational amplifier U13B is also electrically connected to the output pin of the fourth operational amplifier U13B through the fifteenth resistor R75, and the thirteenth capacitor C99 is connected in parallel across the fifteenth resistor R75; the output pin of the fourth operational amplifier U13B is electrically connected to the input terminal of the driving main control module through the seventeenth resistor R77; the first terminal of the fourteenth capacitor C106 is connected to the common connection terminal between the seventeenth resistor R77 and the input terminal of the driving main control module, and the second terminal of the fourteenth capacitor C106 is grounded.

[0015] In addition, the present invention also provides a drive control method for a rotary transformer, wherein the aforementioned drive control method for a rotary transformer is used to drive and control the rotary transformer. The method includes: The main control module is used to send control signals. The signal generation module receives the control signal and generates an excitation signal based on the control signal. The excitation signal generated by the signal generation module is resonantly matched using a signal coupling module to generate a resonant enhancement signal. The drive control module acquires the resonant enhancement signal generated by the signal coupling module. When the resonant enhancement signal fails to reach the target state, the control signal is dynamically adjusted. An adjustment control signal, obtained after dynamic adjustment, is sent to the signal generation module. This adjustment control signal is then used to regenerate the adjusted resonant enhancement signal sequentially through the signal generation module and the signal coupling module until the adjusted resonant enhancement signal reaches the target state. The target state refers to the amplitude of the resonant enhancement signal or the adjusted resonant enhancement signal reaching the amplitude of the given excitation signal of the rotary transformer. The signal coupling module is used to transmit the resonant enhancement signal or the adjusted resonant enhancement signal that has reached the target state to the rotary transformer to drive the rotary transformer to work.

[0016] Optionally, the method further includes: Using the resonance monitoring module, when the drive main control module dynamically adjusts the control signal, the differential voltage signal output by the rotary transformer is acquired; The drive control module receives the differential voltage signal and determines whether the adjusted resonance enhancement signal obtained by the adjustment control signal meets the preset resonance matching condition of the rotary transformer based on the differential voltage signal. If the adjusted resonance enhancement signal does not meet the preset resonance matching condition, the adjustment control signal is dynamically adjusted until the regenerated adjusted resonance enhancement signal simultaneously meets the target state and the preset resonance matching condition.

[0017] The beneficial effects of this invention are: The main control module sends a control signal to the signal generation module, which then generates a corresponding excitation signal under the control of this signal. The signal coupling module performs resonance matching on this excitation signal, which can correct a weak signal input to obtain a signal with a larger amplitude, i.e., a resonance enhancement signal. The main control module collects and analyzes this signal. If the amplitude of this signal does not reach the given excitation signal amplitude of the rotary transformer, i.e., it does not reach the target state, the control signal is dynamically adjusted. Under the control of the adjustment control signal, the signal generation module and the signal coupling module regenerate a new resonance enhancement signal, i.e., adjust the resonance enhancement signal, until the amplitude of the new resonance enhancement signal reaches the given excitation signal amplitude. Using the adjusted resonance enhancement signal that has reached the target state to drive the rotary transformer ensures that the rotary transformer works normally, thereby achieving high-precision, low-distortion angle and position detection. The drive control system and drive control method of the present invention can ensure that weak signal inputs are corrected when dealing with different types of rotary transformers, and ensure that the large voltage amplitude obtained after correction meets the given excitation signal amplitude of the corresponding type of rotary transformer. This fully ensures the functionality of different types of rotary transformers, effectively improves the versatility of the rotary transformer drive system, adapts to a variety of rotary transformers, thereby effectively improving the reliability of rotary transformers and reducing the circuit design complexity and cost in multi-scenario applications. Attached Figure Description

[0018] The features and advantages of the invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the invention in any way. In the drawings: Figure 1 A structural diagram of a drive control system for a rotary transformer according to Embodiment 1 of the present invention is shown; Figure 2 A structural diagram of another drive control system for a rotary transformer according to Embodiment 1 of the present invention is shown; Figure 3 The circuit design diagram of the first acquisition circuit in Embodiment 1 of the present invention is shown; Figure 4 The circuit design diagram of the signal generation module in Embodiment 1 of the present invention is shown; Figure 5 A structural diagram of the excitation winding of the rotary transformer in Embodiment 1 of the present invention is shown; Figure 6 The circuit design diagram of the second acquisition circuit in Embodiment 1 of the present invention is shown; Figure 7 The circuit design diagram of the third acquisition circuit in Embodiment 1 of the present invention is shown; Figure 8 A flowchart of a drive control method for a rotary transformer according to Embodiment 2 of the present invention is shown. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 A drive control system for a rotary transformer, such as Figure 1 As shown, the system includes: The main control module is driven to send control signals. The signal generation module is electrically connected to the output terminal of the drive main control module and is used to receive the control signal and generate an excitation signal according to the control signal. The signal coupling module is electrically connected to the output terminal of the signal generation module, and electrically connected to the input terminal of the drive main control module and the rotary transformer. It is used to perform resonance matching on the excitation signal generated by the signal generation module to generate a resonance enhancement signal. The drive control module is further configured to acquire the resonant enhancement signal generated by the signal coupling module, and dynamically adjust the control signal when the resonant enhancement signal has not reached the target state. It then sends the dynamically adjusted control signal to the signal generation module, using the adjustment control signal to regenerate the adjusted resonant enhancement signal sequentially through the signal generation module and the signal coupling module, until the adjusted resonant enhancement signal reaches the target state. The target state refers to the amplitude of the resonant enhancement signal or the adjusted resonant enhancement signal reaching the amplitude of the given excitation signal of the rotary transformer. The signal coupling module is further configured to transmit the resonant enhancement signal or the adjusted resonant enhancement signal that has reached the target state to the rotary transformer to drive the rotary transformer to operate.

[0021] In this embodiment, the drive control module sends a control signal to the signal generation module. Under the control of this control signal, the signal generation module generates a corresponding excitation signal. The signal coupling module performs resonance matching on the excitation signal, which can correct a weak signal input to obtain a signal with a larger amplitude, i.e., a resonance enhancement signal. The drive control module collects and analyzes this signal. If the amplitude of the signal does not reach the given excitation signal amplitude of the rotary transformer, i.e., it does not reach the target state, the control signal is dynamically adjusted. Under the control of the adjustment control signal, the signal generation module and the signal coupling module regenerate a new resonance enhancement signal, i.e., adjust the resonance enhancement signal, until the amplitude of the new resonance enhancement signal reaches the given excitation signal amplitude. Using the adjusted resonance enhancement signal that has reached the target state to drive the rotary transformer ensures that the rotary transformer works normally, thereby achieving high-precision, low-distortion angle and position detection.

[0022] The drive control system of this embodiment can ensure that weak signal inputs are corrected when dealing with different types of rotary transformers, and ensure that the large voltage amplitude obtained after correction meets the given excitation signal amplitude of the corresponding type of rotary transformer. It fully ensures the functionality of different types of rotary transformers, effectively improves the versatility of the rotary transformer drive system, adapts to a variety of rotary transformers, thereby effectively improving the reliability of rotary transformers and reducing the circuit design complexity and cost in multi-scenario applications.

[0023] For different types of rotary transformers, if the amplitude of the excitation signal (specifically the voltage signal) output by the drive system does not reach the given excitation signal amplitude of the corresponding type of rotary transformer, but is a weak voltage signal, the rotary transformer cannot work properly; however, if the amplitude of the output excitation signal reaches the given excitation signal amplitude of the corresponding type of rotary transformer, it can ensure that the rotary transformer works properly, and the amplitude of its output signal (specifically the differential voltage signal) will strictly follow the functional relationship with the rotor angle, without distortion.

[0024] It should be understood that since the adjustment of the control signal by the drive master control module is a dynamic adjustment process, its goal is to ensure that the resonant enhancement signal reaches the target state. Therefore, the issuance of control signals (or adjustment of control signals) by the drive master control module, the generation of excitation signals by the signal generation module, and the generation of resonant enhancement signals by the signal coupling module are all real-time processes.

[0025] The Tamagawa TSY10XX rotary transformer is selected below as an example to further explain the various circuit modules of the drive control system of the rotary transformer in this embodiment.

[0026] Preferably, such as Figure 2 As shown, the drive main control module includes a controller and a first acquisition circuit; The input terminal of the first acquisition circuit is electrically connected to the output terminal of the signal coupling module, the output terminal of the first acquisition circuit is electrically connected to the input terminal of the controller, and the output terminal of the controller is electrically connected to the input terminal of the signal generation module. The controller is used to send the control signal; The first acquisition circuit is used to acquire the resonant enhancement signal generated by the signal coupling module, and is also used to acquire the adjusted resonant enhancement signal generated by the signal coupling module when the resonant enhancement signal does not reach the target state; The controller is further configured to receive the resonant enhancement signal transmitted by the first acquisition circuit, and dynamically adjust the control signal when the resonant enhancement signal has not reached the target state, send the adjustment control signal to the signal generation module, and receive the adjusted resonant enhancement signal transmitted by the first acquisition circuit until the adjusted resonant enhancement signal reaches the target state.

[0027] By directly acquiring the resonant enhancement signal or adjusting the resonant enhancement signal through the first acquisition circuit, interference in the signal transmission path can be avoided, ensuring the integrity of the original signal waveform and reducing distortion. It also facilitates subsequent analysis by the controller, with strong real-time performance and fast response speed. Through the analysis and dynamic adjustment of the resonant enhancement signal or adjusting the resonant enhancement signal by the controller, adaptive optimization of the driving rotary transformer's operating signal can be achieved, improving versatility.

[0028] In this embodiment, the controller is specifically an FPGA (Field Programmable Gate Array) chip, which can send control signals to the signal generation module. The control signals are specifically digital voltage signals, which can control the voltage amplitude of the excitation signal generated by the signal generation module.

[0029] The first acquisition circuit includes an analog-to-digital converter chip (ADC chip) and its peripheral circuits, as shown in the specific circuit design below. Figure 3 As shown, the ADC chip is specifically the ADS8634SRGET analog-to-digital converter chip. Figure 3 In the process, the resonant enhancement signal or the adjusted resonant enhancement signal (collectively referred to as the EXC voltage signal) output by the signal coupling module is transmitted to the inside of the ADC chip through the signal input pin AIN2 of the ADC chip.

[0030] Preferably, such as Figure 2 and Figure 4 As shown, the signal coupling module includes a first coupling capacitor group composed of multiple first coupling capacitors connected in parallel; the matching capacitor corresponding to the first coupling capacitor group satisfies the preset resonance matching condition of the rotary transformer; The first parallel terminals of all the first coupling capacitors are electrically connected to the output terminal of the signal generation module, and the second parallel terminals of all the first coupling capacitors are electrically connected to the input terminal of the drive main control module and the rotary transformer. The first coupling capacitor bank is used to form a series resonant circuit with the excitation winding in the rotary transformer. When the matching capacitor meets the preset resonant matching conditions, the excitation signal generated by the signal generation module is resonantly enhanced, resulting in a resonant enhanced signal with increased amplitude.

[0031] Since a rotary transformer can be equivalent to an inductor L and a resistor R connected in series, this embodiment uses a parallel structure of multiple first coupling capacitors (i.e., a first coupling capacitor group) to form an RLC series resonant circuit with the inductor L and the resistor R. By selecting the capacitance value of each first coupling capacitor in the first coupling capacitor group, a specific matching capacitor can be formed. This matching capacitor ensures that the resonant frequency in the RLC series resonant circuit is exactly the same as the frequency of the excitation signal (i.e., the matching capacitor satisfies the preset resonant matching condition of the rotary transformer). Resonant matching is achieved through capacitor compensation. At this time, the entire drive system has the strongest response to the input signal, and the output signal (i.e., the resonant enhancement signal) has a significantly enhanced amplitude compared to the original signal (i.e., the excitation signal). This achieves a larger voltage amplitude after the weak input signal is corrected, ensuring that different rotary transformers can obtain a higher amplitude excitation voltage. This ensures that the entire drive system can adaptively adapt to diverse rotary transformers and avoid distortion.

[0032] It should be noted that the preset resonance matching condition in this embodiment means that the resonant frequency in the RLC series resonant circuit is exactly the same as the frequency of the excitation signal. The resonant frequency in the RLC series resonant circuit depends on the matching capacitance of the first coupling capacitor group and the inductance of the excitation winding of the rotary transformer.

[0033] For the Tamagawa rotary transformer TSY10XX, its input impedance is 60Ω when the excitation power supply is 8kHz. To achieve a large voltage amplitude at an input impedance Z=60Ω, the LC winding in the RLC series resonant circuit must resonate in series, i.e., jwL=1 / jwc, ω=2πf, where j represents the imaginary unit, ω is the angular frequency, f is the frequency of the excitation signal (an 8kHz voltage signal), L is the inductance of the rotary transformer's excitation winding, and C is the matching capacitor (i.e., the capacitance of multiple first coupling capacitors connected in parallel). Calculations show C≈0.3315728uF. Therefore, in practical component selection, three 104 / 50V surface-mount capacitors connected in parallel are used to achieve this. Figure 4 Three capacitors, C114, C115, and C122, are connected in parallel, each with a capacitance of 0.1μF and a rated voltage of 50V. After using these three capacitors for resonant matching, the measured values ​​are... Figure 3 The amplitude of the EXC voltage signal (i.e., the resonant enhancement signal) at the signal input pin AIN2 of the ADC chip is 40.06V, which is effectively enhanced.

[0034] Preferably, such as Figure 2 As shown, both the control signal and the update control signal are specifically digital signals; The signal generation module includes a digital-to-analog converter circuit, an operational amplifier circuit, and a buffer push-pull circuit; The input terminal of the digital-to-analog converter circuit is electrically connected to the output terminal of the drive main control module, and the output terminal of the digital-to-analog converter circuit is electrically connected to the first parallel terminal of all the first coupling capacitors in sequence through the operational amplifier circuit and the buffer push-pull circuit. The digital-to-analog converter circuit is used to receive the control signal output by the drive main control module and convert the control signal into an analog voltage signal; it is also used to receive the adjustment control signal output by the drive main control module and convert the adjustment control signal into the analog voltage signal when the resonant enhancement signal has not reached the target state. The operational amplifier circuit is used to amplify the analog voltage signal; The buffer push-pull circuit is used to perform impedance matching on the amplified analog voltage signal and to enhance the power of the impedance-matched analog voltage signal to obtain the excitation signal.

[0035] The control signals output by the main control module are usually digital control signals. A digital-to-analog converter can convert the digital control signals into analog signals, specifically analog voltage signals, to facilitate the normal operation of the rotary transformer. An operational amplifier circuit amplifies the analog voltage signals, which can initially amplify the insufficient voltage amplitude of the analog voltage signals. Then, a buffer push-pull circuit performs impedance matching on the amplified analog voltage signals to avoid signal attenuation caused by voltage division of the input impedance of the subsequent circuits. By enhancing the power of the impedance-matched analog voltage signals, it is easier to match the driving of low-impedance rotary transformers in the future.

[0036] Preferably, such as Figure 2 and Figure 4 As shown, the signal generation module further includes a second coupling capacitor; The first end of the second coupling capacitor is electrically connected to the output terminal of the digital-to-analog converter circuit, and the second end of the second coupling capacitor is electrically connected to the input terminal of the operational amplifier circuit. The second coupling capacitor is used to receive the analog voltage signal output by the digital-to-analog converter circuit and to block DC from the analog voltage signal.

[0037] The output of a digital-to-analog converter circuit typically includes a DC bias voltage and an AC signal component. By connecting a second coupling capacitor between the digital-to-analog converter circuit and the operational amplifier circuit, the DC bias voltage can be isolated to avoid distortion and eliminate DC offset.

[0038] Specifically, such as Figure 4 As shown, the operational amplifier circuit includes a first operational amplifier U16A, a first resistor R85, a second resistor R88, a third resistor R89, a fourth resistor R90, a first capacitor C117, a second capacitor C112, and a third capacitor C113. The positive power supply pin of the first operational amplifier U16A is electrically connected to the +15V power supply terminal. The first terminal of the second capacitor C112 is connected to the common connection between the positive power supply pin of the first operational amplifier U16A and the +15V power supply terminal, and the second terminal of the second capacitor C112 is grounded. The negative power supply pin of the first operational amplifier U16A is electrically connected to the -15V power supply terminal. The first terminal of the third capacitor C113 is connected to the common connection between the negative power supply pin of the first operational amplifier U16A and the -15V power supply terminal, and the second terminal of the third capacitor C113 is grounded. The positive input pin of the first operational amplifier U16A is electrically connected to the output terminal of the digital-to-analog converter circuit through the fourth resistor R90. The first end of the third resistor R89 ​​is connected to the common connection between the fourth resistor R90 and the output terminal of the digital-to-analog converter circuit, and the second end of the third resistor R89 ​​is grounded; the first end of the first capacitor C117 is connected to the common connection between the first operational amplifier U16A and the fourth resistor R90, and the second end of the first capacitor C117 is grounded; the inverting input pin of the first operational amplifier U16A is grounded through the second resistor R88, and the inverting input pin of the first operational amplifier U16A is also electrically connected to the output pin of the first operational amplifier U16A through the first resistor R85, and the output pin of the first operational amplifier U16A is electrically connected to the input terminal of the buffer push-pull circuit.

[0039] By connecting capacitors (the second capacitor C112 and the third capacitor C113) to the positive and negative power supply pins of the first op-amp U16A and grounding them respectively, high-frequency noise in the positive power supply (the +15V power supply provided by the +15V power supply terminal) and the negative power supply (the -15V power supply provided by the -15V power supply terminal) can be eliminated, ensuring power supply stability. The input terminal (positive input pin) of the entire first op-amp U16A is effectively suppressed by a combination of voltage division by resistor (specifically the third resistor R89) and filtering by capacitor (specifically the first capacitor C117), which can improve signal quality. The first resistor R85 connects the inverting input pin and the output pin of the first op-amp U16A to form a negative feedback path. This design enables the first op-amp U16A to operate in the linear region, with a stable output signal and low distortion. The output pin of the first op-amp U16A is electrically connected to the input terminal of the buffer push-pull circuit, which retains the high input impedance and low output impedance characteristics of the op-amp, and facilitates the enhancement of output current capability through the buffer push-pull circuit.

[0040] Specifically, such as Figure 4 As shown, the buffer push-pull circuit includes a second operational amplifier U16B, a first transistor Q1, a second transistor Q2, a fifth resistor R83, and a sixth resistor R91; The collector of the first transistor Q1 is electrically connected to the +15V power supply terminal, and the collector of the second transistor Q2 is electrically connected to the -15V power supply terminal. The emitters of the first transistor Q1 and the second transistor Q2 are connected together and electrically connected to the inverting input pin of the second operational amplifier U16B through the fifth resistor R83. The common connection terminal between the emitters of the first transistor Q1 and the second transistor Q2 is also electrically connected to the first parallel terminal of all the first coupling capacitors. The bases of the first transistor Q1 and the second transistor Q2 are connected together and electrically connected to the output pin of the second operational amplifier U16B. The non-inverting input pin of the second operational amplifier U16B is electrically connected to the output terminal of the operational amplifier circuit through the sixth resistor R91.

[0041] In the aforementioned buffered push-pull circuit, the first transistor Q1 and the second transistor Q2 form a push-pull structure, responsible for the positive and negative half-cycles of the amplified signal output by the operational amplifier circuit, respectively. When there is no signal input, both Q1 and Q2 are cut off, effectively avoiding static current loss; they only conduct when driven by a signal, resulting in low dynamic power consumption and further reducing crossover distortion. The output of the second operational amplifier U16B is connected to the bases of Q1 and Q2, forming a negative feedback loop, which further suppresses crossover distortion and improves signal fidelity. Through the buffered push-pull amplifier circuit designed above, efficient power amplification can be achieved, ensuring low-distortion output and significantly improving the reliability of the entire drive control system.

[0042] Preferably, such as Figure 2 As shown, the system also includes: The resonance monitoring module is electrically connected to the input terminal of the drive main control module and to the output terminal of the rotary transformer; it is used to acquire the differential voltage signal output by the rotary transformer when the drive main control module dynamically adjusts the control signal. The drive main control module is further configured to receive the differential voltage signal, determine whether the adjusted resonance enhancement signal obtained by the adjustment control signal satisfies the preset resonance matching condition of the rotary transformer based on the differential voltage signal; and when the adjusted resonance enhancement signal does not satisfy the preset resonance matching condition, continue to dynamically adjust the adjustment control signal until the regenerated adjusted resonance enhancement signal simultaneously satisfies the target state and the preset resonance matching condition.

[0043] The resonance monitoring module enables real-time monitoring and dynamic compensation of the resonance state, ensuring that the excitation winding of the rotary transformer always operates in the optimal resonance state. This enhances system stability and robustness while ensuring adaptive compatibility with different types of rotary transformers.

[0044] Preferably, the differential voltage signal includes a sinusoidal differential voltage and a cosine differential voltage; like Figure 2 As shown, the resonance monitoring module includes a second acquisition circuit for acquiring the sinusoidal differential voltage and a third acquisition circuit for acquiring the cosine differential voltage; The input terminals of the second acquisition circuit and the third acquisition circuit are both electrically connected to the output terminal of the rotary transformer, and the output terminals of the second acquisition circuit and the third acquisition circuit are both electrically connected to the input terminal of the drive main control module.

[0045] The output signal of a rotary transformer typically includes two quadrature signals, a sine (Sin) signal and a cosine (Cos) signal, which correspond to the rotor angle information respectively. Through an independent differential acquisition circuit, these two signals can be accurately separated to avoid cross-interference.

[0046] Specifically, such as Figure 5 As shown, the output winding of the rotary transformer includes a sinusoidal output winding (specifically referring to...). Figure 5 The windings corresponding to ports 3 and 4) and the cosine output winding (specifically referring to...) Figure 5 (The windings corresponding to ports 5 and 6 in the middle); where, Figure 5 The windings corresponding to ports 1 and 2 are the input windings, which form an RLC series circuit with the first coupling capacitor group.

[0047] like Figure 6 As shown, the second acquisition circuit includes a third operational amplifier U13A, a fourth capacitor C86, a fifth capacitor C87, a sixth capacitor C88, a seventh capacitor C92, an eighth capacitor C93, a ninth capacitor C97, a tenth capacitor C98, an eleventh capacitor C120, a twelfth capacitor C90, a seventh resistor R63, an eighth resistor R64, a ninth resistor R65, a tenth resistor R66, an eleventh resistor R67, a twelfth resistor R68, a thirteenth resistor R71, and a fourteenth resistor R72; The positive power supply pin of the third operational amplifier U13A is electrically connected to the +15V power supply terminal. The first terminal of the fourth capacitor C86 is connected to the common connection terminal between the positive power supply pin of the third operational amplifier U13A and the +15V power supply terminal, and the second terminal of the fourth capacitor C86 is grounded. The negative power supply pin of the third operational amplifier U13A is electrically connected to the -15V power supply terminal. The first terminal of the sixth capacitor C88 is connected to the common connection terminal between the negative power supply pin of the third operational amplifier U13A and the -15V power supply terminal, and the second terminal of the sixth capacitor C88 is grounded. The positive input pin of the third operational amplifier U13A is electrically connected to the positive terminal of the sinusoidal output winding through the twelfth resistor R68; the first terminal of the thirteenth resistor R71 is connected to the common connection terminal between the twelfth resistor R68 and the positive terminal of the sinusoidal output winding, and the second terminal of the thirteenth resistor R71 is grounded through the ninth capacitor C97; the first terminals of the eighth capacitor C93 and the eleventh resistor R67 are both connected to the common connection terminal between the positive input pin of the third operational amplifier U13A and the twelfth resistor R68, and the second terminals of the eighth capacitor C93 and the eleventh resistor R67 are both grounded; The inverting input pin of the third operational amplifier U13A is electrically connected to the negative terminal of the sinusoidal output winding via the eighth resistor R64 and the twelfth capacitor C90. The eleventh capacitor C120 is connected in parallel across the twelfth capacitor C90. The first terminal of the fourteenth resistor R72 is connected to the common connection between the twelfth capacitor C90 and the negative terminal of the sinusoidal output winding, and the second terminal of the fourteenth resistor R72 is grounded via the tenth capacitor C98. The first terminal of the tenth resistor R66 is connected to the common connection between the eighth resistor R64 and the twelfth capacitor C90, and the second terminal of the tenth resistor R66 is connected to the common connection between the twelfth resistor R68 and the positive terminal of the sinusoidal output winding. The inverting input pin of the third operational amplifier U13A is also electrically connected to the output pin of the third operational amplifier U13A through the seventh resistor R63, and the fifth capacitor C87 is connected in parallel across the seventh resistor R63; the output pin of the third operational amplifier U13A is electrically connected to the input terminal of the driving main control module through the ninth resistor R65; the first terminal of the seventh capacitor C92 is connected to the common connection terminal between the ninth resistor R65 and the input terminal of the driving main control module, and the second terminal of the seventh capacitor C92 is grounded.

[0048] The circuit structure designed above provides a high-precision, strong anti-interference, and high-stability signal acquisition circuit, ensuring accurate and reliable sinusoidal differential voltage acquisition, thereby ensuring the reliability and stability of resonant state monitoring.

[0049] Specifically, such as Figure 7As shown, the third acquisition circuit includes a fourth operational amplifier U13B, a thirteenth capacitor C99, a fourteenth capacitor C106, a fifteenth capacitor C107, a sixteenth capacitor C108, a seventeenth capacitor C109, an eighteenth capacitor C102, a nineteenth capacitor C121, a fifteenth resistor R75, a sixteenth resistor R76, a seventeenth resistor R77, an eighteenth resistor R78, a nineteenth resistor R79, a twentieth resistor R80, a twenty-first resistor R81, and a twenty-second resistor R82. The positive input pin of the fourth operational amplifier U13B is electrically connected to the positive terminal of the cosine output winding through the twentieth resistor R80; the first end of the twentieth resistor R81 is connected to the common connection terminal between the twentieth resistor R80 and the positive terminal of the cosine output winding, and the second end of the twentieth resistor R81 is grounded through the sixteenth capacitor C108; the first ends of the fifteenth capacitor C107 and the nineteenth resistor R79 are both connected to the common connection terminal between the positive input pin of the fourth operational amplifier U13B and the twentieth resistor R80, and the second ends of the fifteenth capacitor C107 and the nineteenth resistor R79 are both grounded; The inverting input pin of the fourth operational amplifier U13B is electrically connected to the negative terminal of the cosine output winding via the sixteenth resistor R76 and the eighteenth capacitor C102. The nineteenth capacitor C121 is connected in parallel across the eighteenth capacitor C102. The first end of the twenty-second resistor R82 is connected to the common connection between the eighteenth capacitor C102 and the negative terminal of the cosine output winding, and the second end of the twenty-second resistor R82 is grounded via the seventeenth capacitor C109. The first end of the eighteenth resistor R78 is connected to the common connection between the sixteenth resistor R76 and the eighteenth capacitor C102, and the second end of the eighteenth resistor R78 is connected to the common connection between the twentieth resistor R80 and the positive terminal of the cosine output winding. The inverting input pin of the fourth operational amplifier U13B is also electrically connected to the output pin of the fourth operational amplifier U13B through the fifteenth resistor R75, and the thirteenth capacitor C99 is connected in parallel across the fifteenth resistor R75; the output pin of the fourth operational amplifier U13B is electrically connected to the input terminal of the driving main control module through the seventeenth resistor R77; the first terminal of the fourteenth capacitor C106 is connected to the common connection terminal between the seventeenth resistor R77 and the input terminal of the driving main control module, and the second terminal of the fourteenth capacitor C106 is grounded.

[0050] The structure described above is the same as that of the second acquisition circuit. Therefore, by using the third acquisition circuit designed above for acquiring cosine differential voltage, it is possible to ensure the acquisition of accurate and reliable cosine differential voltage, thereby ensuring the reliability and stability of resonance state monitoring.

[0051] It should be noted that, to simplify circuit design, the second and third acquisition circuits described above can share a single ADC chip with the first acquisition circuit, such as... Figure 3 As shown, the signal acquired by the second acquisition circuit (i.e. Figure 3 The EncSinA signal is input to the ADC chip through the signal input pin AIN0. The signal acquired by the third acquisition circuit (i.e., Figure 3 The Enc CosB signal is input to the ADC chip through the signal input pin AIN1, and then sent to the controller through the output pin of the ADC chip.

[0052] It should be understood that during the process of the main control module dynamically adjusting the control signal, on the one hand, in order to ensure that the resonant enhancement signal or the adjusted resonant enhancement signal reaches the target state, a suitable matching capacitor can be selected, and a suitable combination of first coupling capacitors can be selected, so that the amplitude of the resonant enhancement signal or the adjusted resonant enhancement signal used to drive the rotary transformer based on the matching capacitor reaches the given excitation signal amplitude, thereby achieving the enhancement and correction of the weak input signal; on the other hand, in order to ensure that the resonant enhancement signal or the adjusted resonant enhancement signal meets the preset resonant matching condition (i.e., the frequency of the signal), a suitable matching capacitor can be selected, that is, a suitable combination of first coupling capacitors can be selected, so that the RLC series circuit formed by the corresponding first coupling capacitor group and the rotary transformer reaches the series resonance state, that is, the frequency of the resonant enhancement signal or the adjusted resonant enhancement signal is the same as the resonant frequency of the RLC series circuit.

[0053] It should be understood that the electronic components such as operational amplifiers, transistors, resistors, and capacitors in the circuit modules described above in this embodiment can all be selected from the market according to the actual situation, and will not be listed here.

[0054] Example 2 A drive control method for a rotary transformer, wherein the drive control system of the rotary transformer in Embodiment 1 is used to drive and control the rotary transformer; like Figure 8 As shown, the method includes: S1: Use the main control module to send control signals; S2: Using the signal generation module, receive the control signal and generate an excitation signal based on the control signal; S3: Using the signal coupling module, the excitation signal generated by the signal generation module is resonantly matched to generate a resonant enhancement signal; S4: Using the drive main control module, the resonant enhancement signal generated by the signal coupling module is acquired. When the resonant enhancement signal has not reached the target state, the control signal is dynamically adjusted, and the dynamically adjusted adjustment control signal is sent to the signal generation module. The adjustment control signal is then used to regenerate the adjustment resonant enhancement signal sequentially through the signal generation module and the signal coupling module until the adjustment resonant enhancement signal reaches the target state. The target state refers to the amplitude of the resonant enhancement signal or the adjustment resonant enhancement signal reaching the amplitude of the given excitation signal of the rotary transformer. S5: Using the signal coupling module, the resonant enhancement signal or the adjusted resonant enhancement signal that has reached the target state is transmitted to the rotary transformer to drive the rotary transformer to work.

[0055] In this embodiment, the drive control module sends a control signal to the signal generation module. Under the control of this control signal, the signal generation module generates a corresponding excitation signal. The signal coupling module performs resonance matching on the excitation signal, which can correct a weak signal input to obtain a signal with a larger amplitude, i.e., a resonance enhancement signal. The drive control module collects and analyzes this signal. If the amplitude of the signal does not reach the given excitation signal amplitude of the rotary transformer, i.e., it does not reach the target state, the control signal is dynamically adjusted. Under the control of the adjustment control signal, the signal generation module and the signal coupling module regenerate a new resonance enhancement signal, i.e., adjust the resonance enhancement signal, until the amplitude of the new resonance enhancement signal reaches the given excitation signal amplitude. Using the adjusted resonance enhancement signal that has reached the target state to drive the rotary transformer ensures that the rotary transformer works normally, thereby achieving high-precision, low-distortion angle and position detection.

[0056] The drive control method of this embodiment can ensure that weak signal inputs are corrected when dealing with different types of rotary transformers, and ensure that the large voltage amplitude obtained after correction meets the given excitation signal amplitude of the corresponding type of rotary transformer. This fully ensures the functionality of different types of rotary transformers, effectively improves the versatility of the rotary transformer drive system, adapts to a variety of rotary transformers, and thus effectively improves the reliability of rotary transformers and reduces the circuit design complexity and cost in multi-scenario applications.

[0057] Preferably, the method further includes: S6: Using the resonance monitoring module, when the drive main control module dynamically adjusts the control signal, the differential voltage signal output by the rotary transformer is collected; S7: Using the drive main control module, receive the differential voltage signal, and determine whether the adjusted resonance enhancement signal obtained by the adjustment control signal meets the preset resonance matching condition of the rotary transformer based on the differential voltage signal; and if the adjusted resonance enhancement signal does not meet the preset resonance matching condition, continue to dynamically adjust the adjustment control signal until the regenerated adjusted resonance enhancement signal simultaneously meets the target state and the preset resonance matching condition.

[0058] Through the above steps, real-time monitoring and dynamic compensation of the resonant state can be achieved, ensuring that the rotary transformer always works in the optimal resonant state. While ensuring adaptive compatibility with different types of rotary transformers, the stability and robustness of the system are enhanced.

[0059] The drive control system for the rotary transformer used in the drive control method described in this embodiment has the same structure as the drive control system for the rotary transformer in Embodiment 1. Therefore, for details not covered in this embodiment, please refer to Embodiment 1 and... Figures 1 to 7 The specific details will not be repeated here.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A drive control system for a rotary transformer, characterized in that, The system includes: The main control module is driven to send control signals. The signal generation module is electrically connected to the output terminal of the drive main control module and is used to receive the control signal and generate an excitation signal according to the control signal. The signal coupling module is electrically connected to the output terminal of the signal generation module, and electrically connected to the input terminal of the drive main control module and the rotary transformer. It is used to perform resonance matching on the excitation signal generated by the signal generation module to generate a resonance enhancement signal. The drive control module is further configured to acquire the resonant enhancement signal generated by the signal coupling module, and dynamically adjust the control signal when the resonant enhancement signal has not reached the target state. It then sends the dynamically adjusted control signal to the signal generation module, using the adjustment control signal to regenerate the adjusted resonant enhancement signal sequentially through the signal generation module and the signal coupling module, until the adjusted resonant enhancement signal reaches the target state. The target state refers to the amplitude of the resonant enhancement signal or the adjusted resonant enhancement signal reaching the amplitude of the given excitation signal of the rotary transformer. The signal coupling module is further configured to transmit the resonant enhancement signal or the adjusted resonant enhancement signal that has reached the target state to the rotary transformer to drive the rotary transformer to operate.

2. The drive control system for the rotary transformer according to claim 1, characterized in that, The signal coupling module includes a first coupling capacitor group consisting of multiple first coupling capacitors connected in parallel; the matching capacitor corresponding to the first coupling capacitor group satisfies the preset resonance matching condition of the rotary transformer; The first parallel terminals of all the first coupling capacitors are electrically connected to the output terminal of the signal generation module, and the second parallel terminals of all the first coupling capacitors are electrically connected to the input terminal of the drive main control module and the rotary transformer. The first coupling capacitor bank is used to form a series resonant circuit with the excitation winding in the rotary transformer. When the matching capacitor meets the preset resonant matching conditions, the excitation signal generated by the signal generation module is resonantly enhanced, resulting in a resonant enhanced signal with increased amplitude.

3. The drive control system for the rotary transformer according to claim 2, characterized in that, Both the control signal and the update control signal are specifically digital signals; The signal generation module includes a digital-to-analog converter circuit, an operational amplifier circuit, and a buffer push-pull circuit; The input terminal of the digital-to-analog converter circuit is electrically connected to the output terminal of the drive main control module, and the output terminal of the digital-to-analog converter circuit is electrically connected to the first parallel terminal of all the first coupling capacitors in sequence through the operational amplifier circuit and the buffer push-pull circuit. The digital-to-analog converter circuit is used to receive the control signal output by the drive main control module and convert the control signal into an analog voltage signal; it is also used to receive the adjustment control signal output by the drive main control module and convert the adjustment control signal into the analog voltage signal when the resonant enhancement signal has not reached the target state. The operational amplifier circuit is used to amplify the analog voltage signal; The buffer push-pull circuit is used to perform impedance matching on the amplified analog voltage signal and to enhance the power of the impedance-matched analog voltage signal to obtain the excitation signal.

4. The drive control system for the rotary transformer according to claim 3, characterized in that, The signal generation module also includes a second coupling capacitor; The first end of the second coupling capacitor is electrically connected to the output terminal of the digital-to-analog converter circuit, and the second end of the second coupling capacitor is electrically connected to the input terminal of the operational amplifier circuit. The second coupling capacitor is used to receive the analog voltage signal output by the analog-to-digital converter circuit and to block DC from the analog voltage signal.

5. The drive control system for the rotary transformer according to claim 3, characterized in that, The operational amplifier circuit includes a first operational amplifier U16A, a first resistor R85, a second resistor R88, a third resistor R89, a fourth resistor R90, a first capacitor C117, a second capacitor C112, and a third capacitor C113. The positive power supply pin of the first operational amplifier U16A is electrically connected to the +15V power supply terminal. The first terminal of the second capacitor C112 is connected to the common connection between the positive power supply pin of the first operational amplifier U16A and the +15V power supply terminal, and the second terminal of the second capacitor C112 is grounded. The negative power supply pin of the first operational amplifier U16A is electrically connected to the -15V power supply terminal. The first terminal of the third capacitor C113 is connected to the common connection between the negative power supply pin of the first operational amplifier U16A and the -15V power supply terminal, and the second terminal of the third capacitor C113 is grounded. The positive input pin of the first operational amplifier U16A is electrically connected to the output terminal of the digital-to-analog converter circuit through the fourth resistor R90. The first end of the third resistor R89 ​​is connected to the common connection between the fourth resistor R90 and the output terminal of the digital-to-analog converter circuit, and the second end of the third resistor R89 ​​is grounded; the first end of the first capacitor C117 is connected to the common connection between the first operational amplifier U16A and the fourth resistor R90, and the second end of the first capacitor C117 is grounded; the inverting input pin of the first operational amplifier U16A is grounded through the second resistor R88, and the inverting input pin of the first operational amplifier U16A is also electrically connected to the output pin of the first operational amplifier U16A through the first resistor R85, and the output pin of the first operational amplifier U16A is electrically connected to the input terminal of the buffer push-pull circuit.

6. The drive control system for the rotary transformer according to claim 3, characterized in that, The buffer push-pull circuit includes a second operational amplifier U16B, a first transistor Q1, a second transistor Q2, a fifth resistor R83, and a sixth resistor R91; The collector of the first transistor Q1 is electrically connected to the +15V power supply terminal, and the collector of the second transistor Q2 is electrically connected to the -15V power supply terminal. The emitters of the first transistor Q1 and the second transistor Q2 are connected together and electrically connected to the inverting input pin of the second operational amplifier U16B through the fifth resistor R83. The common connection terminal between the emitters of the first transistor Q1 and the second transistor Q2 is also electrically connected to the first parallel terminal of all the first coupling capacitors. The bases of the first transistor Q1 and the second transistor Q2 are connected together and electrically connected to the output pin of the second operational amplifier U16B. The non-inverting input pin of the second operational amplifier U16B is electrically connected to the output terminal of the operational amplifier circuit through the sixth resistor R91.

7. The drive control system for the rotary transformer according to claim 1, characterized in that, The drive main control module includes a controller and a first acquisition circuit; The input terminal of the first acquisition circuit is electrically connected to the output terminal of the signal coupling module, the output terminal of the first acquisition circuit is electrically connected to the input terminal of the controller, and the output terminal of the controller is electrically connected to the input terminal of the signal generation module. The controller is used to send the control signal; The first acquisition circuit is used to acquire the resonant enhancement signal generated by the signal coupling module, and is also used to acquire the adjusted resonant enhancement signal generated by the signal coupling module when the resonant enhancement signal does not reach the target state; The controller is further configured to receive the resonant enhancement signal transmitted by the first acquisition circuit, and dynamically adjust the control signal when the resonant enhancement signal has not reached the target state, send the adjustment control signal to the signal generation module, and receive the adjusted resonant enhancement signal transmitted by the first acquisition circuit until the adjusted resonant enhancement signal reaches the target state.

8. The drive control system for the rotary transformer according to claim 1, characterized in that, The system also includes: The resonance monitoring module is electrically connected to the input terminal of the drive main control module and to the output terminal of the rotary transformer; it is used to acquire the differential voltage signal output by the rotary transformer when the drive main control module dynamically adjusts the control signal. The drive main control module is further configured to receive the differential voltage signal, determine whether the adjusted resonance enhancement signal obtained by the adjustment control signal satisfies the preset resonance matching condition of the rotary transformer based on the differential voltage signal; and when the adjusted resonance enhancement signal does not satisfy the preset resonance matching condition, continue to dynamically adjust the adjustment control signal until the regenerated adjusted resonance enhancement signal simultaneously satisfies the target state and the preset resonance matching condition.

9. The drive control system for the rotary transformer according to claim 8, characterized in that, The differential voltage signal includes a sinusoidal differential voltage and a cosine differential voltage; The resonance monitoring module includes a second acquisition circuit for acquiring the sinusoidal differential voltage and a third acquisition circuit for acquiring the cosine differential voltage; The input terminals of the second acquisition circuit and the third acquisition circuit are both electrically connected to the output terminal of the rotary transformer, and the output terminals of the second acquisition circuit and the third acquisition circuit are both electrically connected to the input terminal of the drive main control module.

10. The drive control system for the rotary transformer according to claim 9, characterized in that, The output windings of the rotary transformer include a sine output winding and a cosine output winding; The second acquisition circuit includes a third operational amplifier U13A, a fourth capacitor C86, a fifth capacitor C87, a sixth capacitor C88, a seventh capacitor C92, an eighth capacitor C93, a ninth capacitor C97, a tenth capacitor C98, an eleventh capacitor C120, a twelfth capacitor C90, a seventh resistor R63, an eighth resistor R64, a ninth resistor R65, a tenth resistor R66, an eleventh resistor R67, a twelfth resistor R68, a thirteenth resistor R71, and a fourteenth resistor R72; The positive power supply pin of the third operational amplifier U13A is electrically connected to the +15V power supply terminal. The first terminal of the fourth capacitor C86 is connected to the common connection terminal between the positive power supply pin of the third operational amplifier U13A and the +15V power supply terminal, and the second terminal of the fourth capacitor C86 is grounded. The negative power supply pin of the third operational amplifier U13A is electrically connected to the -15V power supply terminal. The first terminal of the sixth capacitor C88 is connected to the common connection terminal between the negative power supply pin of the third operational amplifier U13A and the -15V power supply terminal, and the second terminal of the sixth capacitor C88 is grounded. The positive input pin of the third operational amplifier U13A is electrically connected to the positive terminal of the sinusoidal output winding through the twelfth resistor R68; the first terminal of the thirteenth resistor R71 is connected to the common connection terminal between the twelfth resistor R68 and the positive terminal of the sinusoidal output winding, and the second terminal of the thirteenth resistor R71 is grounded through the ninth capacitor C97; the first terminals of the eighth capacitor C93 and the eleventh resistor R67 are both connected to the common connection terminal between the positive input pin of the third operational amplifier U13A and the twelfth resistor R68, and the second terminals of the eighth capacitor C93 and the eleventh resistor R67 are both grounded; The inverting input pin of the third operational amplifier U13A is electrically connected to the negative terminal of the sinusoidal output winding via the eighth resistor R64 and the twelfth capacitor C90. The eleventh capacitor C120 is connected in parallel across the twelfth capacitor C90. The first terminal of the fourteenth resistor R72 is connected to the common connection between the twelfth capacitor C90 and the negative terminal of the sinusoidal output winding, and the second terminal of the fourteenth resistor R72 is grounded via the tenth capacitor C98. The first terminal of the tenth resistor R66 is connected to the common connection between the eighth resistor R64 and the twelfth capacitor C90, and the second terminal of the tenth resistor R66 is connected to the common connection between the twelfth resistor R68 and the positive terminal of the sinusoidal output winding. The inverting input pin of the third operational amplifier U13A is also electrically connected to the output pin of the third operational amplifier U13A through the seventh resistor R63, and the fifth capacitor C87 is connected in parallel across the seventh resistor R63; the output pin of the third operational amplifier U13A is electrically connected to the input terminal of the driving main control module through the ninth resistor R65; the first terminal of the seventh capacitor C92 is connected to the common connection terminal between the ninth resistor R65 and the input terminal of the driving main control module, and the second terminal of the seventh capacitor C92 is grounded.

11. The drive control system for the rotary transformer according to claim 9, characterized in that, The output windings of the rotary transformer include a sine output winding and a cosine output winding; The third acquisition circuit includes a fourth operational amplifier U13B, a thirteenth capacitor C99, a fourteenth capacitor C106, a fifteenth capacitor C107, a sixteenth capacitor C108, a seventeenth capacitor C109, an eighteenth capacitor C102, a nineteenth capacitor C121, a fifteenth resistor R75, a sixteenth resistor R76, a seventeenth resistor R77, an eighteenth resistor R78, a nineteenth resistor R79, a twentieth resistor R80, a twenty-first resistor R81, and a twenty-second resistor R82. The positive input pin of the fourth operational amplifier U13B is electrically connected to the positive terminal of the cosine output winding through the twentieth resistor R80; the first end of the twentieth resistor R81 is connected to the common connection terminal between the twentieth resistor R80 and the positive terminal of the cosine output winding, and the second end of the twentieth resistor R81 is grounded through the sixteenth capacitor C108; the first ends of the fifteenth capacitor C107 and the nineteenth resistor R79 are both connected to the common connection terminal between the positive input pin of the fourth operational amplifier U13B and the twentieth resistor R80, and the second ends of the fifteenth capacitor C107 and the nineteenth resistor R79 are both grounded; The inverting input pin of the fourth operational amplifier U13B is electrically connected to the negative terminal of the cosine output winding via the sixteenth resistor R76 and the eighteenth capacitor C102. The nineteenth capacitor C121 is connected in parallel across the eighteenth capacitor C102. The first end of the twenty-second resistor R82 is connected to the common connection between the eighteenth capacitor C102 and the negative terminal of the cosine output winding, and the second end of the twenty-second resistor R82 is grounded via the seventeenth capacitor C109. The first end of the eighteenth resistor R78 is connected to the common connection between the sixteenth resistor R76 and the eighteenth capacitor C102, and the second end of the eighteenth resistor R78 is connected to the common connection between the twentieth resistor R80 and the positive terminal of the cosine output winding. The inverting input pin of the fourth operational amplifier U13B is also electrically connected to the output pin of the fourth operational amplifier U13B through the fifteenth resistor R75, and the thirteenth capacitor C99 is connected in parallel across the fifteenth resistor R75; the output pin of the fourth operational amplifier U13B is electrically connected to the input terminal of the driving main control module through the seventeenth resistor R77; the first terminal of the fourteenth capacitor C106 is connected to the common connection terminal between the seventeenth resistor R77 and the input terminal of the driving main control module, and the second terminal of the fourteenth capacitor C106 is grounded.

12. A drive control method for a rotary transformer, characterized in that, The rotary transformer is driven and controlled using the drive control method for the rotary transformer as described in any one of claims 1 to 11. The method includes: The main control module is used to send control signals. The signal generation module receives the control signal and generates an excitation signal based on the control signal. The excitation signal generated by the signal generation module is resonantly matched using a signal coupling module to generate a resonant enhancement signal. The drive control module acquires the resonant enhancement signal generated by the signal coupling module. When the resonant enhancement signal fails to reach the target state, the control signal is dynamically adjusted. An adjustment control signal, obtained after dynamic adjustment, is sent to the signal generation module. This adjustment control signal is then used to regenerate the adjusted resonant enhancement signal sequentially through the signal generation module and the signal coupling module until the adjusted resonant enhancement signal reaches the target state. The target state refers to the amplitude of the resonant enhancement signal or the adjusted resonant enhancement signal reaching the amplitude of the given excitation signal of the rotary transformer. The signal coupling module is used to transmit the resonant enhancement signal or the adjusted resonant enhancement signal that has reached the target state to the rotary transformer to drive the rotary transformer to work.

13. The drive control method for a rotary transformer according to claim 12, characterized in that, The method further includes: Using the resonance monitoring module, when the drive main control module dynamically adjusts the control signal, the differential voltage signal output by the rotary transformer is acquired; The drive control module receives the differential voltage signal and determines whether the adjusted resonance enhancement signal obtained by the adjustment control signal meets the preset resonance matching condition of the rotary transformer based on the differential voltage signal. If the adjusted resonance enhancement signal does not meet the preset resonance matching condition, the adjustment control signal is dynamically adjusted until the regenerated adjusted resonance enhancement signal simultaneously meets the target state and the preset resonance matching condition.

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