Characteristic parameter tracking method, equipment, device and medium for ultrasonic transducer

Abstract

The invention discloses a characteristic parameter tracking method, system and device of an ultrasonic transducer and a storage medium, the method is used for tracking characteristic parameters of an ultrasonic vibration system, the ultrasonic vibration system comprises a static capacitance branch and the ultrasonic transducer, the static capacitance branch and the ultrasonic transducer are connected in parallel, and the capacitance values of the static capacitance branch and the ultrasonic transducer are equal. The tracking method comprises the following steps: acquiring a first current flowing through a static capacitance branch, a second current flowing through the static capacitance branch and an ultrasonic transducer, and voltage phases corresponding to voltages at two ends of a dynamic branch; according to the first current and the second current, determining a current phase corresponding to the current flowing through the two ends of the dynamic branch; determining a target phase difference according to the current phase and the voltage phase; and determining characteristic parameters of the ultrasonic transducer according to the target phase difference. According to the method, the tracking accuracy of the inherent characteristic parameters of the ultrasonic transducer can be improved. The method can be widely applied to the technical field of ultrasonic welding.

Description

Technical Field

[0001] The present application relates to the field of ultrasonic welding technology, and in particular to a method, equipment, device and storage medium for tracking characteristic parameters of an ultrasonic transducer. Background Art

[0002] In the prior art, there is usually a transducer in the ultrasonic welding system that converts the electrical energy of the ultrasonic frequency drive signal into the mechanical energy of ultrasonic frequency mechanical vibration. Since the transducer is a whole, it cannot be divided into various simple test branches like a general circuit, resulting in the inability to directly measure the various electrical parameters of the transducer in the ultrasonic welding system. For this reason, the related technology also has certain errors in the measurement of the ultrasonic generator's actual conversion into ultrasonic energy and the tracking of the inherent characteristic parameters of the ultrasonic transducer. Therefore, there are still technical problems in the related art that need to be improved. Summary of the invention

[0003] The purpose of this application is to solve one of the technical problems existing in the prior art to at least a certain extent.

[0004] To this end, an object of an embodiment of the present application is to provide a method, device, apparatus and storage medium for tracking characteristic parameters of an ultrasonic transducer, which can improve the accuracy of the ultrasonic generator's measurement of energy converted into ultrasonic waves, and can improve the accuracy of tracking the inherent characteristic parameters of the ultrasonic transducer.

[0005] In order to achieve the above-mentioned technical objectives, the technical solution adopted in the embodiments of the present application includes: obtaining a first voltage phase corresponding to a first current flowing through the static capacitor branch, a second current flowing through the static capacitor branch and the dynamic branch, and a first voltage applied to the dynamic branch; determining a third current phase corresponding to a third current flowing through both ends of the dynamic branch based on the first current and the second current; determining a target phase difference based on the third current phase and the first voltage phase; and determining characteristic parameters of the ultrasonic transducer based on the target phase difference.

[0006] In addition, the method for tracking characteristic parameters of an ultrasonic transducer according to the above embodiment of the present invention may also have the following additional technical features:

[0007] Furthermore, in an embodiment of the present application, the step of determining a third current phase corresponding to a third current flowing through the two ends of the dynamic branch based on the first current and the second current specifically includes: performing vector operation on the first current and the second current to obtain a first vector current; extracting the phase of the first vector current as the third current phase corresponding to the third current at both ends of the dynamic branch.

[0008] Furthermore, in an embodiment of the present application, the step of performing a vector operation on the first current and the second current to obtain a first vector current specifically includes: performing a vector subtraction operation on the first current and the second current to obtain a first vector difference; and using the first vector difference as the first vector current.

[0009] Furthermore, in an embodiment of the present application, the step of determining the target phase difference based on the third current phase and the first voltage phase specifically includes: subtracting the third current phase from the first voltage phase to obtain a first phase difference; and using the first phase difference as the target phase difference.

[0010] Furthermore, in an embodiment of the present application, the characteristic parameters include characteristic frequencies, and the step of determining the characteristic parameters of the ultrasonic transducer based on the target phase difference specifically includes: dynamically adjusting the dynamic frequency of the ultrasonic vibration system to change the target phase difference; and taking the dynamic frequency corresponding to when the target phase difference becomes 0 as the characteristic parameter.

[0011] Furthermore, in an embodiment of the present application, the characteristic parameter tracking method also includes: tracking the useful work power of the ultrasonic system, and the step of tracking the useful work power of the ultrasonic system specifically includes: multiplying the third current and the first voltage to obtain a first product; subtracting the first voltage phase and the third current phase to obtain a first phase difference; and determining the useful work power based on the first phase difference and the first product.

[0012] Furthermore, in an embodiment of the present application, the useful work power is determined based on the first phase difference and the first product. This step specifically includes: extracting the cosine value corresponding to the first phase difference; and multiplying the cosine value by the first product to determine the useful work power.

[0013] On the other hand, an embodiment of the present application also provides a characteristic parameter tracking device of an ultrasonic transducer, which is used to track the characteristic parameters of an ultrasonic vibration system, wherein the ultrasonic vibration system includes a static capacitance branch and an ultrasonic transducer, the static capacitance branch is connected in parallel with the ultrasonic transducer, and the capacitance value of the static capacitance branch is equal to the capacitance value of the ultrasonic transducer, and the device includes: an acquisition unit, which is used to acquire a first current flowing through the static capacitance branch, a second current flowing through the static capacitance branch and the dynamic branch, and a first voltage phase corresponding to a first voltage applied to the dynamic branch; a first processing unit, which is used to determine a third current phase corresponding to a third current flowing through both ends of the dynamic branch based on the first current and the second current; a second processing unit, which is used to determine a target phase difference based on the third current phase and the first voltage phase; and a third processing unit, which is used to determine the characteristic parameters of the ultrasonic transducer based on the target phase difference.

[0014] On the other hand, the present application also provides a characteristic parameter tracking device of an ultrasonic transducer, comprising:

[0015] at least one processor;

[0016] at least one memory for storing at least one program;

[0017] When the at least one program is executed by the at least one processor, the at least one processor implements the characteristic parameter tracking method of the ultrasonic transducer as described above.

[0018] In addition, the present application also provides a computer-readable storage medium, which stores processor-executable instructions. When the processor-executable instructions are executed by the processor, they are used to execute the characteristic parameter tracking method of an ultrasonic transducer as described above.

[0019] The advantages and benefits of the present application will be partially given in the following description, and partially become apparent from the following description, or be understood through the practice of the present application:

[0020] The present application can determine the current phase corresponding to the current flowing through the two ends of the dynamic branch by obtaining the current flowing through the static capacitance branch equivalent to the capacitance value of the ultrasonic transducer, and the total current flowing through the static capacitance branch and the dynamic circuit, and the voltage phase corresponding to the voltage applied to the two ends of the dynamic branch. The target phase difference of the ultrasonic transducer can be obtained through the current phase and the voltage phase, and the characteristic parameters of the ultrasonic transducer can be determined according to the target phase difference. The present application builds a circuit topology in which the static capacitance branch is connected in parallel with the circuit of the ultrasonic transducer, so that the static capacitance branch can be equivalent to the current of the static capacitance of the ultrasonic transducer that is difficult to measure internally, and finally obtains the characteristic parameters of the ultrasonic transducer by measuring the current flowing through the static capacitance branch, and measuring the second current flowing through the static capacitance branch and the ultrasonic transducer and the voltage phase corresponding to the voltage applied to the two ends of the dynamic branch. The present application can improve the accuracy of the ultrasonic generator in measuring the actual conversion into ultrasonic energy, and can improve the accuracy of tracking the inherent characteristic parameters of the ultrasonic transducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an ultrasonic vibration system in a specific embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the steps of a characteristic parameter tracking method of an ultrasonic transducer in a specific embodiment of the present invention;

[0023] Figure 3 A schematic diagram of a subtraction operation of a vector current in a specific embodiment of the present invention;

[0024] Figure 4 It is a structural schematic diagram of an ultrasonic vibration system in another specific embodiment of the present invention;

[0025] Figure 5 It is a structural schematic diagram of a characteristic parameter tracking device of an ultrasonic transducer in another specific embodiment of the present invention;

[0026] Figure 6 It is a schematic structural diagram of a characteristic parameter tracking device of an ultrasonic transducer in another specific embodiment of the present invention. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings to explain the principles and processes of the characteristic parameter tracking method, device, apparatus and storage medium of the ultrasonic transducer in the embodiments of the present invention.

[0028] The present invention provides a method for tracking characteristic parameters of an ultrasonic transducer, which can be used to track characteristic parameters of an ultrasonic vibration system, wherein a reference Figure 1 , Figure 1 Figure 1 is a schematic diagram of the structure of the ultrasonic vibration system. Figure 1 In the present invention, the ultrasonic vibration system may include a signal sampling and conditioning module 1, a static capacitance branch 2 and a dynamic branch 3. The static capacitance branch 2 may be connected in parallel with the dynamic branch 3. The capacitance value of the static capacitance branch 2 may be equal to the capacitance value of the ultrasonic transducer. The signal sampling and conditioning module 1 may adjust the output electrical signals such as the input voltage, output current and output frequency of the signal.

[0029] Reference Figure 2 The present invention provides a method for tracking characteristic parameters of an ultrasonic transducer. The tracking method may include but is not limited to steps S1 to S4.

[0030] S1. Obtain a first current flowing through a static capacitor branch, a second current flowing through the static capacitor branch and a dynamic branch, and a first voltage phase corresponding to a first voltage applied to the dynamic branch.

[0031] It should be noted that the first current may be a current flowing through the static capacitor branch, and the current may be a vector value, that is, the current may carry a current value and a phase corresponding to the current. The second current may be a total current flowing through the static capacitor branch and the dynamic branch. Since the static capacitor branch is connected in parallel with the dynamic branch, the total current may differ from the first current by a certain phase difference and a certain amplitude. The first voltage phase may be a voltage phase corresponding to the first voltage applied to both ends of the dynamic branch.

[0032] In the embodiment of the present application, the first current flowing through the static capacitor branch, the second current flowing through the static capacitor branch and the dynamic branch, and the first voltage phase corresponding to the first voltage applied to the dynamic branch can be obtained by the acquisition module. Then, the above data is sent to the processor for subsequent processing through the connection between the acquisition module and the processor.

[0033] It is understandable that, in the present embodiment, when acquiring the first current flowing through the static capacitor branch, the second current flowing through the static capacitor branch and the dynamic branch, and the first voltage phase corresponding to the first voltage applied to the dynamic branch, the acquisition module can be simultaneously acquired. The acquisition module can be one or more modules. When the acquisition module is a module, it can be integrated by multiple devices with different parameter measurement functions. In the embodiment of the present application, the connection between the acquisition module and the processor can be a signal connection or a direct connection through an electrical line. Similarly, the connection between the control system and the output circuit can be a direct connection through an electrical line. It should be noted that the signal connection method can include but is not limited to 3G / 4G / 5G connection, WiFi connection, Bluetooth connection, WiMAX connection, Zigbee connection, UWB (Ultra Wide Band) connection and other wireless connection methods known now or to be developed in the future. Among them, WiMax (Worldwide Interoperability for Microwave Access), that is, global microwave interconnection access, and ZigBee is a low-power LAN protocol based on the IEEE802.15.4 standard, and UWB (ultra wide band) is a low-power radio technology applied to the field of wireless communication.

[0034] S2. Determine a third current phase corresponding to a third current flowing through both ends of the dynamic branch according to the first current and the second current.

[0035] It should be noted that, in the embodiment of the present application, the third current flowing through both ends of the dynamic branch may be a current with an amplitude and a certain phase. Due to the different component structures and component parameters of different branches in the system, the phases corresponding to the currents of different dynamic branches may be different, and the parameters of the dynamic branches may be equivalently adjusted according to different ultrasonic transducers.

[0036] In an embodiment of the present application, the processor or processing module can calculate the third current flowing through both ends of the dynamic branch based on the received first current and the received second current through a certain algorithm, wherein the third current may include parameters such as the third current phase, the current amplitude, and the effective value of the current.

[0037] It should be understood that in the embodiment of the present application, the algorithm for obtaining the corresponding vector current may be any relevant algorithm that can accurately calculate its current phase, wherein the relevant algorithm may include a commonly used subtraction algorithm, or a weighted algorithm or other algorithms.

[0038] S3. Determine a target phase difference according to the third current phase and the first voltage phase.

[0039] It should be noted that the target phase difference can be the difference between the voltage phase corresponding to the voltage flowing through the two ends of the dynamic branch at any time and the current phase corresponding to the current flowing through the two ends of the dynamic branch. The target phase difference can reflect whether the entire ultrasonic vibration system is in a resonant state.

[0040] In the embodiment of the present application, the processor obtains the current phase and the voltage phase, which can be further processed. The current phase and the voltage phase are processed by an algorithm preset in the processor, and finally the target phase difference can be determined.

[0041] S4. Determine characteristic parameters of the ultrasonic transducer according to the target phase difference.

[0042] It should be noted that the characteristic parameter can be the characteristic frequency, or the useful work power of the ultrasonic system, or the characteristic frequency and the useful work power of the ultrasonic system. Among them, the useful work power can characterize the work power of the current on the dynamic branch participating in external work. The useful work power can convert the electrical energy of the ultrasonic frequency drive signal into the mechanical energy of ultrasonic frequency mechanical vibration.

[0043] In an embodiment of the present application, the processor obtains the target phase difference between the voltage and current flowing through the two ends of the dynamic branch, calculates the phase difference through a built-in algorithm, and finally determines the useful work power of the dynamic branch. Since only the current on the dynamic branch of the ultrasonic transducer participates in external work, the useful work power of the dynamic branch can be equal to the useful work power of the ultrasonic transducer. Among them, the built-in algorithm can include an algorithm for power calculation. The processor can also adjust the target phase difference to a certain threshold value, and by collecting the control frequency of the ultrasonic transducer electrical signal corresponding to a certain threshold value, the characteristic frequency of the ultrasonic transducer can be obtained.

[0044] Further, in some feasible embodiments of the present application, the step of determining a third current phase corresponding to a third current flowing through both ends of the dynamic branch according to the first current and the second current may specifically include but is not limited to steps S21 to S22.

[0045] S21. Perform vector operation on the first current and the second current to obtain a first vector current.

[0046] It should be noted that the first vector current may include but is not limited to parameters such as current phase, current amplitude and effective value of current. Vector operations may be vector addition, vector subtraction, vector multiplication and vector cross product.

[0047] In the embodiment of the present application, the processor can perform vector operations on the first current and the second current through an internal algorithm to obtain a first vector current. The first vector current can represent the current flowing through both ends of the dynamic branch.

[0048] S22. Extract the phase of the first vector current as the third current phase corresponding to the third current at both ends of the dynamic branch.

[0049] In an embodiment of the present application, the processor can extract the corresponding current phase from the first vector current, and use the current phase as the current phase corresponding to the third current at both ends of the dynamic branch, that is, the current phase flowing through the dynamic branch inside the integrated ultrasonic transducer.

[0050] Furthermore, in some feasible embodiments of the present application, the step of performing vector operation on the first current and the second current to obtain the first vector current may specifically include but is not limited to steps S211 to S212.

[0051] S211 . Perform a vector subtraction operation on the first current and the second current to obtain a first vector difference.

[0052] It should be noted that the operation between the first current and the second current in the embodiment of the present application can be a vector subtraction operation. Through vector subtraction, the embodiment of the present application can obtain a new vector current, which can be used as the current flowing through both ends of the dynamic branch.

[0053] In the embodiment of the present application, the processor may perform vector subtraction operation on the first current and the second current to obtain a first vector difference, wherein the first vector difference is also a current parameter, which may include parameters such as the corresponding current phase, current amplitude and current effective value.

[0054] S212. Using the first vector difference as the first vector current.

[0055] For example, refer to Figure 3 , Figure 3 The schematic diagram of the vector current subtraction operation is shown in Figure 2. Figure 3 In the equation, Ic(t) is the first current, Ie(t) is the second current, and according to the triangle rule of vector subtraction, the first vector current is I1(t), that is, the third current is I1(t), and the voltage applied to both ends of the dynamic branch corresponds to U(t). The phase difference between U(t) and I1(t) is α.

[0056] Further, in some feasible embodiments of the present application, the step of determining the target phase difference according to the current phase and the voltage phase may specifically include but not be limited to steps S31 to S32.

[0057] S31, performing a subtraction operation on the third current phase and the first voltage phase to obtain a first phase difference;

[0058] S32: Taking the first phase difference as the target phase difference.

[0059] It should be noted that the first phase difference may be the difference between the third current phase and the first voltage phase. The structure in the static capacitor branch is different from the structure in the dynamic branch, and the initial phase of the voltage phase before entering the static capacitor branch and the dynamic branch is also different from the initial phase of the current phase before entering the static capacitor branch, so a certain phase difference will be generated between the current and the voltage.

[0060] In the embodiment of the present application, the processor can obtain a first phase difference by subtracting the current phase from the voltage phase, and use this as the target phase difference. It is understandable that the target phase difference can change with the parameters of the inductive device or the capacitive device in the circuit, and can also change with the frequency of the PWM signal input to the circuit.

[0061] Further, in some feasible embodiments of the present application, the characteristic parameter may include a characteristic frequency, and the step of determining the characteristic parameter of the ultrasonic transducer according to the target phase difference may specifically include but not be limited to steps S41 to S42.

[0062] S41, dynamically adjusting the dynamic frequency of the ultrasonic vibration system to change the target phase difference;

[0063] S42. Taking the dynamic frequency corresponding to when the target phase difference becomes 0 as a characteristic parameter.

[0064] It should be noted that the frequency of the ultrasonic vibration system can be dynamically adjusted by changing the parameters of the circuit elements or the frequency of the PWM signal of the input circuit. The characteristic frequency can be the frequency corresponding to the ultrasonic vibration system when the target phase difference becomes 0, or the characteristic frequency can be the frequency corresponding to the PWM signal of the input circuit when the target phase difference becomes 0. When the target phase difference becomes 0, the entire ultrasonic vibration system can be in a resonant state.

[0065] In an embodiment of the present application, the processor can control the corresponding controller so that the controller dynamically adjusts the frequency of the ultrasonic vibration system to change the target phase difference. The processor can simultaneously track the frequency changes corresponding to the phase changes. When the target phase difference becomes 0, the frequency corresponding to 0 can be used as the characteristic frequency of the ultrasonic transducer.

[0066] It can be understood that the embodiments of the present application can improve the frequency tracking accuracy, can improve the problem of difficult-to-control welding quality or ultrasonic processing quality caused by inaccurate frequency tracking of the ultrasonic vibration system, and can improve the problem of transducer spark damage.

[0067] Furthermore, in some feasible embodiments of the present application, the characteristic parameter tracking method may also include: S5, tracking the useful work power of the ultrasonic system.

[0068] Step S5 tracks the useful work power of the ultrasonic system. This step may specifically include, but is not limited to, steps S51 to S53.

[0069] S51, performing a multiplication operation on the third current and the first voltage to obtain a first product;

[0070] S52, subtracting the first voltage phase from the third current phase to obtain a first phase difference;

[0071] S53: Determine useful work power according to the first phase difference and the first product.

[0072] It should be noted that, in the embodiment of the present application, the processor can calculate the useful power using the current at both ends of the dynamic branch and the voltage at both ends of the dynamic branch captured by the processor itself. The current at both ends of the dynamic branch can correspond to a value A and the voltage at both ends of the dynamic branch can correspond to a value B, and A and B can be effective values ​​of the alternating current parameters.

[0073] In the embodiment of the present application, the processor can perform a multiplication operation on the current at both ends of the dynamic branch and the voltage at both ends of the dynamic branch to obtain a first product, and the first product can represent the maximum useful work power of the dynamic branch and can also represent the maximum useful work power of the equivalent ultrasonic transducer. Since there is a certain phase difference between the voltage and the current, the useful work power can be the maximum useful work power multiplied by a proportional coefficient, and the proportional coefficient can be determined by the phase difference.

[0074] Further, in some feasible embodiments of the present application, the useful active power is determined based on the first phase difference and the first product. This step may specifically include but is not limited to steps S531 to S532.

[0075] S531, extracting a cosine value corresponding to the first phase difference;

[0076] S532: Perform multiplication operation on the cosine value and the first product to determine the useful work power.

[0077] It should be noted that, in this embodiment, the first product is the maximum useful work power, and the actual useful work power can change dynamically with the change of the voltage and current of the ultrasonic transducer.

[0078] In the embodiment of the present application, the cosine value corresponding to the phase difference between the first voltage and the third current is extracted, and the actual useful work power can be obtained by multiplying the cosine value with the first product representing the maximum useful work power.

[0079] Exemplarily, in the embodiment of the present application, when the first phase difference is θ, the first voltage is V, and the third current is I, the useful work power W=V*I*cosθ.

[0080] It can be understood that when the first phase difference is 0, the actual useful work power of the dynamic branch is the maximum value, that is, when the ultrasonic vibration system is in a resonant state, the ultrasonic transducer can output the maximum useful work power.

[0081] Combine the following Figure 4 The characteristic parameter tracking method of the ultrasonic transducer of the present application is explained. In this embodiment, the first current of the static capacitance branch is (A, α), the total current of the dynamic branch and the static capacitance branch, that is, the second current is (B, β), and the first voltage at both ends of the dynamic branch is (Y, γ), where A, B and C represent current values ​​or voltage values ​​that can be obtained by the processor, and α, β and γ are the corresponding current or voltage phases.

[0082] Reference Figure 4 ,exist Figure 4 The first acquisition module 400 can obtain the first current (A, α), the second acquisition module 200 can obtain the second current (B, β), and the third acquisition module 500 can obtain the voltage corresponding to the voltage at both ends of the dynamic branch (Y, γ). The processor receives the first current (A, α), the second current (B, β) and the first voltage (Y, γ), and can first calculate the third current at both ends of the dynamic branch and its corresponding phase (C, Σ) according to the vector algorithm, and then determine the target phase difference as Σ-γ according to the phase Σ of the third current and the phase γ of the first voltage, and then the processor responds to the controller by adjusting the input Figure 4 The frequency changes of the PWM signals of P1 and P2 in the above example are used to track the characteristic frequency of the ultrasonic transducer. When the phase difference Σ-γ=0, it may correspond to a controller frequency E, and the characteristic frequency of the corresponding acoustic transducer may be determined to be E. In addition, the processor may perform a multiplication operation based on the current value C of the third current and the voltage value A of the first voltage to obtain a first product C*A; at the same time, the first voltage phase γ and the third current phase Σ may be subtracted to obtain a first phase difference Σ-γ; and finally, the active power C*A*cos(Σ-γ) may be obtained.

[0083] In addition, refer to Figure 5 ,and Figure 1Corresponding to the method, an embodiment of the present application also provides a characteristic parameter tracking device of an ultrasonic transducer, and the tracking device can be used to track the characteristic parameters of an ultrasonic vibration system, wherein the ultrasonic vibration system may include a static capacitance branch and an ultrasonic transducer, the static capacitance branch is connected in parallel with the ultrasonic transducer, and the capacitance value of the static capacitance branch is equal to the capacitance value of the ultrasonic transducer. The tracking device may include: an acquisition unit 101, a first processing unit 102, a second processing unit 103, and a third processing unit 104. The acquisition unit 101 can be used to acquire a first current flowing through the static capacitance branch, a second current flowing through the static capacitance branch and the dynamic branch, and a first voltage phase corresponding to the first voltage applied to the dynamic branch; the first processing unit 102 can be used to determine a third current phase corresponding to a third current flowing through both ends of the dynamic branch according to the first current and the second current; the second processing unit 103 can be used to determine a target phase difference according to the third current phase and the first voltage phase; the third processing unit 104 can be used to determine the characteristic parameters of the ultrasonic transducer according to the target phase difference.

[0084] In some feasible embodiments of the present application, the acquisition unit 101, the first processing unit 102, the second processing unit 103 and the third processing unit 104 can be arranged in the same device or equipment, and the first current flowing through the static capacitance branch, the second current flowing through the static capacitance branch and the dynamic branch, and the first voltage phase corresponding to the first voltage applied to the dynamic branch are acquired through the module inside the device or device, and then the acquired data is processed by the subsequent processor of the device or device, and the characteristic parameters of the ultrasonic transducer are finally determined. In some other embodiments of the present application, the acquisition unit 101 can also be any module connected to the device or device, and the acquired data is transmitted to the device or device through a wired or wireless connection with the device or device, and the data is processed by the module inside the host computer. In addition, in some embodiments, the first processing unit 102, the second processing unit 103 and the third processing unit 104 are also the same, and the specific device connection mode and the setting of the device are not limited.

[0085] It can be understood that the contents of the above-mentioned embodiment of the characteristic parameter tracking method of the ultrasonic transducer are applicable to the embodiment of the characteristic parameter tracking system of the ultrasonic transducer. The functions specifically implemented by the embodiment of the characteristic parameter tracking system of the ultrasonic transducer are the same as those in the above-mentioned embodiment of the characteristic parameter tracking method of the ultrasonic transducer, and the beneficial effects achieved are also the same as those achieved by the above-mentioned embodiment of the characteristic parameter tracking method of the ultrasonic transducer.

[0086] and Figure 1 Corresponding to the method, the embodiment of the present application also provides a characteristic parameter tracking device of an ultrasonic transducer, and its specific structure can be referred to Figure 6 ,include:

[0087] at least one processor 1001;

[0088] At least one memory 1002, used to store at least one program;

[0089] When the at least one program is executed by the at least one processor, the at least one processor implements the characteristic parameter tracking method of the ultrasonic transducer.

[0090] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0091] and Figure 1 Corresponding to the method, an embodiment of the present application further provides a computer-readable storage medium, which stores processor-executable instructions, and the processor-executable instructions are used to execute the characteristic parameter tracking method of the ultrasonic transducer when executed by the processor.

[0092] It can be understood that the contents of the above-mentioned characteristic parameter tracking method embodiment of the ultrasonic transducer are all applicable to the computer-readable storage medium embodiment, the functions specifically implemented by the computer-readable storage medium embodiment are the same as those in the above-mentioned characteristic parameter tracking method embodiment of the ultrasonic transducer, and the beneficial effects achieved are also the same as the beneficial effects achieved by the above-mentioned characteristic parameter tracking method embodiment of the ultrasonic transducer.

[0093] In some optional embodiments, the function / operation mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the function / operation involved, the two boxes shown in succession can actually be executed substantially simultaneously or the boxes can sometimes be executed in reverse order. In addition, the embodiment presented and described in the flow chart of the application is provided by way of example, for the purpose of providing a more comprehensive understanding of technology. The disclosed method is not limited to the operation and logic flow presented herein. Optional embodiments are expected, wherein the order of various operations is changed and the sub-operation described as a part of a larger operation is performed independently.

[0094] In addition, although the present application is described in the context of functional modules, it should be understood that, unless otherwise specified, one or more of the functions and / or features can be integrated into a single physical device and / or software module, or one or more functions and / or features can be implemented in a separate physical device or software module. It is also understood that a detailed discussion of the actual implementation of each module is unnecessary for understanding the present application. More specifically, in view of the properties, functions, and internal relationships of the various functional modules in the device disclosed herein, the actual implementation of the module will be understood within the conventional techniques of the engineer. Therefore, those skilled in the art can implement the present application set forth in the claims without excessive experimentation using ordinary techniques. It is also understood that the specific concepts disclosed are merely illustrative and are not intended to limit the scope of the present application, which is determined by the full scope of the attached claims and their equivalents.

[0095] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several programs to enable a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0096] The logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable programs for implementing the logical functions, and may be embodied in any computer-readable medium for use by a program execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch and execute a program from a program execution system, device or apparatus), or in conjunction with such program execution systems, devices or apparatuses. For purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use by a program execution system, device or apparatus, or in conjunction with such program execution systems, devices or apparatuses.

[0097] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0098] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable program execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0099] In the above description of this specification, the description with reference to the terms "one embodiment / example", "another embodiment / example" or "certain embodiments / examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0100] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

[0101] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the described embodiments. Technical personnel familiar with the field may make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A method for tracking characteristic parameters of an ultrasonic transducer, characterized in that: Used to track characteristic parameters of an ultrasonic transducer, wherein the ultrasonic transducer is equivalent to a static capacitance branch and a dynamic branch, the static capacitance branch is connected in parallel with the dynamic branch, and the capacitance value of the static capacitance branch is equal to the capacitance value of the ultrasonic transducer, and the tracking method comprises the following steps: Acquire a first current flowing through the static capacitor branch, a second current flowing through the static capacitor branch and the dynamic branch, and a first voltage phase corresponding to a first voltage applied to the dynamic branch; Determining a third current phase corresponding to a third current flowing through two ends of the dynamic branch according to the first current and the second current; determining a target phase difference according to the third current phase and the first voltage phase; According to the target phase difference, characteristic parameters of the ultrasonic transducer are determined.

2. The characteristic parameter tracking method of an ultrasonic transducer according to claim 1, characterized in that: The step of determining a third current phase corresponding to a third current flowing through both ends of the dynamic branch according to the first current and the second current specifically includes: Performing vector operation on the first current and the second current to obtain a first vector current; The phase of the first vector current is extracted as a third current phase corresponding to the third current at both ends of the dynamic branch.

3. The characteristic parameter tracking method of an ultrasonic transducer according to claim 2, characterized in that: The step of performing vector operation on the first current and the second current to obtain a first vector current specifically includes: Performing a vector subtraction operation on the first current and the second current to obtain a first vector difference; The first vector difference is used as the first vector current.

4. The characteristic parameter tracking method of an ultrasonic transducer according to claim 1, characterized in that: The step of determining a target phase difference according to the third current phase and the first voltage phase specifically includes: Subtracting the third current phase from the first voltage phase to obtain a first phase difference; The first phase difference is used as the target phase difference.

5. The characteristic parameter tracking method of an ultrasonic transducer according to claim 1, characterized in that: The characteristic parameter includes a characteristic frequency, and the step of determining the characteristic parameter of the ultrasonic transducer according to the target phase difference specifically includes: Dynamically adjusting the dynamic frequency of the ultrasonic vibration system so that the target phase difference changes; The dynamic frequency corresponding to when the target phase difference becomes 0 is used as the characteristic parameter.

6. The characteristic parameter tracking method of an ultrasonic transducer according to claim 1, characterized in that: The characteristic parameter tracking method further includes: tracking the useful work power of the ultrasonic system, and the step of tracking the useful work power of the ultrasonic system specifically includes: performing a multiplication operation on the third current and the first voltage to obtain a first product; Subtracting the first voltage phase from the third current phase to obtain a first phase difference; The useful work power is determined according to the first phase difference and the first product.

7. The characteristic parameter tracking method of an ultrasonic transducer according to claim 6, characterized in that: The step of determining the useful work power according to the first phase difference and the first product specifically includes: Extracting a cosine value corresponding to the first phase difference; The cosine value is multiplied by the first product to determine the useful work power.

8. A characteristic parameter tracking device for an ultrasonic transducer, characterized in that: Used to track characteristic parameters of an ultrasonic transducer, wherein the ultrasonic transducer is equivalent to a static capacitance branch and a dynamic branch, the static capacitance branch is connected in parallel with the dynamic branch, and the capacitance value of the static capacitance branch is equal to the capacitance value of the ultrasonic transducer, the tracking device comprises: an acquisition unit, configured to acquire a first current flowing through the static capacitor branch, a second current flowing through the static capacitor branch and the dynamic branch, and a first voltage phase corresponding to a first voltage applied to the dynamic branch; A first processing unit, configured to determine a third current phase corresponding to a third current flowing through both ends of the dynamic branch according to the first current and the second current; a second processing unit, configured to determine a target phase difference according to the third current phase and the first voltage phase; The third processing unit is used to determine the characteristic parameters of the ultrasonic transducer according to the target phase difference.

9. A characteristic parameter tracking device for an ultrasonic transducer, characterized in that include: at least one processor; at least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the characteristic parameter tracking method of the ultrasonic transducer as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing instructions executable by a processor, characterized in that: The processor-executable instructions are used to execute the characteristic parameter tracking method of the ultrasonic transducer as described in any one of claims 1-7 when executed by the processor.

Images