Ultrasonic transducer constant amplitude control method, device, equipment and storage medium

Abstract

The application relates to the technical field of ultrasonic equipment, and discloses an ultrasonic transducer constant-amplitude control method, device, equipment and storage medium, the method comprising the following steps: acquiring a slow-start frequency range and a target working current corresponding to a to-be-started ultrasonic transducer; determining a slow-start process according to the slow-start frequency range and the target working current, wherein the slow-start process is a process of making the peak voltage of the to-be-started ultrasonic transducer not exceed a safety voltage in the slow-start frequency range; starting the to-be-started ultrasonic transducer according to the slow-start process, and performing constant-amplitude control after the to-be-started ultrasonic transducer is started. According to the application, the to-be-started ultrasonic transducer can be started according to the slow-start process, the peak voltage of the to-be-started ultrasonic transducer can not exceed the safety voltage in the starting process, and the constant-amplitude control is performed after the starting is completed. Compared with the prior art of immediately performing the constant-amplitude control after starting, the application can prevent overshoot and prolong the service life.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic equipment, and more particularly to a method, apparatus, device, and storage medium for constant amplitude control of an ultrasonic transducer. Background Technology

[0002] Currently, ultrasonic transducers are commonly used in ultrasonic scalpels. These transducers convert high-frequency electrical energy into ultrasonic energy, which is then transmitted to the tissue through the cutter's blade. When the ultrasonic energy comes into contact with the tissue, friction and vibration are generated, causing friction and resonance between tissue molecules, leading to breakage. In this way, the ultrasonic scalpel can quickly and precisely cut soft tissue, while the heat generated by vibration and friction achieves hemostasis.

[0003] To ensure the safety and performance stability of ultrasonic transducers during use, constant amplitude control is generally required. This is achieved by the controller using dynamic constant current and dynamic frequency tracking algorithms to implement PID phase-locked loop and frequency tracking, as well as PID constant current. However, this operation is usually performed when the ultrasonic transducer is powered on. When PID phase-locked loop and frequency tracking are performed simultaneously during startup, overshoot inevitably occurs due to control oscillations. This can cause the voltage across the ceramic plate of the ultrasonic transducer to exceed the safe voltage, reducing its service life.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a constant amplitude control method, device, equipment, and storage medium for ultrasonic transducers, aiming to solve the technical problem in the prior art where ultrasonic transducers undergo PID phase-locked loop-frequency tracking and PID constant current control simultaneously upon startup, resulting in overshoot due to regulatory oscillations and consequently, a shorter service life.

[0006] To achieve the above objectives, the present invention provides a constant amplitude control method for an ultrasonic transducer, the method comprising the following steps:

[0007] Obtain the soft-start frequency range and target operating current corresponding to the ultrasonic transducer to be started;

[0008] The slow-start process is determined based on the slow-start frequency range and the target operating current. The slow-start process is a process that ensures the peak voltage of the ultrasonic transducer to be started does not exceed the safe voltage within the slow-start frequency range.

[0009] The ultrasonic transducer to be started is started according to the slow start procedure, and constant amplitude control is performed after the ultrasonic transducer to be started is completed.

[0010] Optionally, before the step of obtaining the soft-start frequency range and target operating current corresponding to the ultrasonic transducer to be started, the method further includes:

[0011] Determine the minimum impedance value of the ultrasonic transducer to be activated within the preset frequency range;

[0012] The process adjustment frequency and the target operating frequency are selected from the preset frequency range based on the minimum impedance value;

[0013] A soft-start frequency range is generated based on the process adjustment frequency and the target operating frequency.

[0014] Optionally, the step of determining the minimum impedance value of the ultrasonic transducer to be activated within a preset frequency range includes:

[0015] The ultrasonic transducer to be activated is scanned within a preset frequency range, and the impedance curve of the ultrasonic transducer to be activated is obtained based on the scanning results.

[0016] The minimum impedance value of the transducer to be started within the preset frequency range is determined based on the impedance curve.

[0017] Optionally, the step of selecting the process adjustment frequency and the target operating frequency from the preset frequency range based on the minimum impedance value includes:

[0018] Based on the impedance curve, the frequency corresponding to the minimum impedance value is taken as the target operating frequency;

[0019] The process adjustment frequency is selected from the preset frequency range according to the target operating frequency.

[0020] Optionally, after the step of generating a soft-start frequency range based on the process adjustment frequency and the target operating frequency, the method further includes:

[0021] The soft-start frequency range is divided according to the process adjustment frequency and the target operating frequency, and the frequency adjustment stage is determined according to the division result;

[0022] The process regulation current is determined based on the target operating current, and the current regulation stage is determined based on the process regulation current and the target operating current.

[0023] A soft-start process is generated based on the frequency regulation stage and the current regulation stage.

[0024] Optionally, the step of generating a soft-start process based on the frequency regulation stage and the current regulation stage includes:

[0025] In the frequency adjustment phase, the current frequency of the transducer to be started is adjusted, and in the current adjustment phase, the current of the transducer to be started is adjusted.

[0026] The current voltage of the transducer to be started is collected in real time during the adjustment process, and the peak voltage is determined based on the collection results when the adjustment is completed.

[0027] When the peak voltage does not exceed the safe voltage, a soft start process is generated based on the adjustment process.

[0028] Optionally, the step of performing constant amplitude control after the ultrasonic transducer to be started has been started includes:

[0029] When the current of the ultrasonic transducer to be started reaches the target operating current, the preset dynamic constant current algorithm is activated.

[0030] When the current frequency of the ultrasonic transducer to be started reaches the target operating frequency, the preset dynamic frequency tracking algorithm is activated.

[0031] Furthermore, to achieve the above objectives, the present invention also proposes a constant amplitude control device for an ultrasonic transducer, the device comprising:

[0032] The range acquisition module is used to acquire the soft-start frequency range and target operating current corresponding to the ultrasonic transducer to be started;

[0033] The process determination module is used to determine the slow start process based on the slow start frequency range and the target operating current. The slow start process is a process that ensures the peak voltage of the ultrasonic transducer to be started does not exceed the safe voltage within the slow start frequency range.

[0034] The process initiation module is used to start the ultrasonic transducer to be started according to the soft start process, and to perform constant amplitude control after the ultrasonic transducer to be started is started.

[0035] Furthermore, to achieve the above objectives, the present invention also proposes an ultrasonic transducer constant amplitude control device, the device comprising: a memory, a processor, and an ultrasonic transducer constant amplitude control program stored in the memory and executable on the processor, the ultrasonic transducer constant amplitude control program being configured to implement the steps of the ultrasonic transducer constant amplitude control method as described above.

[0036] Furthermore, to achieve the above objectives, the present invention also proposes a storage medium storing an ultrasonic transducer constant amplitude control program, wherein when the ultrasonic transducer constant amplitude control program is executed by a processor, the steps of the ultrasonic transducer constant amplitude control method described above are implemented.

[0037] This invention provides a method, apparatus, device, and storage medium for constant amplitude control of an ultrasonic transducer. The method involves obtaining the soft-start frequency range and target operating current corresponding to the ultrasonic transducer to be started; determining a soft-start procedure based on the soft-start frequency range and target operating current, wherein the soft-start procedure ensures that the peak voltage of the ultrasonic transducer to be started does not exceed a safe voltage within the soft-start frequency range; starting the ultrasonic transducer according to the soft-start procedure; and performing constant amplitude control after the ultrasonic transducer has started. Because this invention can first generate a soft-start procedure based on the soft-start frequency range and target operating current, and then start the ultrasonic transducer according to the soft-start procedure, the peak voltage of the ultrasonic transducer to be started can be kept below a safe voltage during the start-up process, and constant amplitude control is performed after start-up. Compared to existing methods that immediately perform constant amplitude control upon power-on, this invention can start through a soft-start procedure, thereby preventing overshoot and improving service life. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the ultrasonic transducer constant amplitude control device in the hardware operating environment involved in the embodiments of the present invention;

[0039] Figure 2 This is a flowchart illustrating the first embodiment of the constant amplitude control method for ultrasonic transducers of the present invention.

[0040] Figure 3 This is a schematic diagram of current and voltage acquisition in the constant amplitude control method for ultrasonic transducers of the present invention;

[0041] Figure 4 This is a schematic diagram of impedance calculation in the constant amplitude control method for ultrasonic transducers of the present invention;

[0042] Figure 5 This is a schematic diagram of the impedance curve in the constant amplitude control method for the ultrasonic transducer of the present invention;

[0043] Figure 6 This is a flowchart illustrating the second embodiment of the constant amplitude control method for ultrasonic transducers of the present invention.

[0044] Figure 7 This is a schematic representation of the first soft-start phase action in the constant amplitude control method for ultrasonic transducers of the present invention;

[0045] Figure 8 This is a timing diagram of the current electrical state and current voltage of the ultrasonic transducer under the first soft-start-stage action in the constant amplitude control method of the ultrasonic transducer of the present invention.

[0046] Figure 9 This is a schematic representation of the second soft-start stage action in the constant amplitude control method for ultrasonic transducers of the present invention;

[0047] Figure 10 This is a timing diagram of the current electrical state and current voltage of the ultrasonic transducer under the second soft-start-stage action in the constant amplitude control method of the ultrasonic transducer of the present invention.

[0048] Figure 11 This is a structural block diagram of the first embodiment of the ultrasonic transducer constant amplitude control device of the present invention.

[0049] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0051] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the ultrasonic transducer constant amplitude control device in the hardware operating environment of the embodiment of the present invention.

[0052] like Figure 1 As shown, the constant amplitude control device for the ultrasonic transducer may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk storage device. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0053] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the constant amplitude control device for the ultrasonic transducer, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0054] like Figure 1As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and an ultrasonic transducer constant amplitude control program.

[0055] exist Figure 1 In the ultrasonic transducer constant amplitude control device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and memory 1005 in the ultrasonic transducer constant amplitude control device of the present invention can be set in the ultrasonic transducer constant amplitude control device. The ultrasonic transducer constant amplitude control device calls the ultrasonic transducer constant amplitude control program stored in the memory 1005 through the processor 1001 and executes the ultrasonic transducer constant amplitude control method provided in the embodiment of the present invention.

[0056] It should be noted that ultrasonic transducers are currently commonly used in ultrasonic scalpels. These transducers convert high-frequency electrical energy into ultrasonic energy, which is then transmitted to the tissue through the cutter's blade. When the ultrasonic energy comes into contact with the tissue, friction and vibration are generated, causing friction and resonance between tissue molecules, leading to breakage. In this way, the ultrasonic scalpel can quickly and precisely cut soft tissue, while the heat generated by vibration and friction achieves hemostasis.

[0057] The existing controller can generate a sine wave signal according to a certain frequency and current and transmit it to the ultrasonic transducer so that the ultrasonic transducer can operate normally. The frequency can be a range within which the transducer can operate normally. The current can be set according to the operating current of different transducers. That is, when the operating frequency and operating current of a certain ultrasonic transducer are known, the controller can output the corresponding sine wave signal to the ultrasonic transducer according to the operating frequency and operating current, and the ultrasonic transducer will then start to operate.

[0058] To ensure the safety and performance stability of ultrasonic transducers during use, constant amplitude control is generally required. This is achieved by using a dynamic constant current algorithm and a dynamic frequency tracking algorithm to implement PID phase-locked loop and frequency tracking, as well as PID constant current. However, this operation is usually performed when the ultrasonic transducer is powered on. When PID phase-locked loop and frequency tracking are performed simultaneously during the startup phase, regulatory oscillations can cause overshoot, which in turn causes the voltage across the ceramic plate of the ultrasonic transducer to exceed the safe voltage, reducing its service life.

[0059] The applicant discovered that the aforementioned defects arise because the frequency and current received by the ultrasonic transducer gradually increase from a low value until they reach a stable operating frequency and current. During this process, the impedance of the ultrasonic scalpel containing the transducer changes with the frequency. Since the current increases to the operating current, according to Ohm's law, the change in impedance and the increase in current may lead to an increase in voltage. Therefore, simultaneously performing PID phase-locked loop-frequency tracking and PID constant current control during the ultrasonic transducer's startup phase inevitably results in regulatory oscillations causing overshoot. Therefore, this embodiment provides a constant amplitude control method for an ultrasonic transducer. First, a slow-start process is generated based on the slow-start frequency range and the target operating current. The ultrasonic transducer to be started is then started according to this process. During startup, the slow-start process ensures that the peak voltage of the ultrasonic transducer does not exceed the safe voltage. After startup, constant amplitude control is performed. Compared to existing methods that immediately perform constant amplitude control upon startup, this embodiment uses a slow-start process for startup and then performs constant amplitude control after startup, thereby preventing overshoot and improving service life.

[0060] For ease of subsequent explanation, the following will be combined with Figures 2 to 11 This embodiment provides a constant amplitude control method for an ultrasonic transducer, and the following embodiments will be described.

[0061] Reference Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of the constant amplitude control method for ultrasonic transducers of the present invention.

[0062] like Figure 2 As shown, in this embodiment, the method includes the following steps:

[0063] Step S10: Obtain the soft-start frequency range and target operating current corresponding to the ultrasonic transducer to be started.

[0064] It should be noted that the method in this embodiment can be applied to scenarios involving constant amplitude control of ultrasonic transducers. The executing entity of this method can be a device with constant amplitude control, network communication, and program execution functions for ultrasonic transducers, such as a controller, or other electronic devices that perform the same or similar functions. The following description uses the aforementioned constant amplitude control device for ultrasonic transducers (hereinafter referred to as the device) to illustrate this embodiment and the subsequent embodiments.

[0065] Understandably, the aforementioned device can be connected to the aforementioned ultrasonic transducer to be started (hereinafter referred to as ultrasonic transducer), generate a sine wave signal according to a preset frequency and current, and transmit it to the ultrasonic transducer so that the ultrasonic transducer can operate normally.

[0066] The aforementioned soft-start frequency range is the range within which the frequency is controlled in this embodiment. The aforementioned target operating current is the current when the transducer is running normally. Since the target operating current of different transducers is not the same, it can be set according to the actual situation. This embodiment does not impose any restrictions on this.

[0067] In this embodiment, the frequency of the ultrasonic transducer during normal operation can be recorded as the target operating frequency, and the current during normal operation can be recorded as the target operating current. Thus, the above-mentioned soft-start frequency range can be between 0 and the target operating frequency.

[0068] Furthermore, in order to obtain the soft-start frequency range, in this embodiment, before the above step S10, the following step is also included: Step S01: Determine the minimum impedance value of the ultrasonic transducer to be started within the preset frequency range.

[0069] Since the impedance of an ultrasonic transducer changes as the frequency increases, according to Ohm's law, if the stage of decreasing impedance is selected and the current is increased to the target operating current during this stage, although the current is increasing, the decrease in impedance may cause the voltage to decrease, and thus the voltage will not exceed the safe voltage.

[0070] Therefore, in order to determine the minimum impedance value of the ultrasonic transducer, the above step S01 includes: scanning the ultrasonic transducer to be started according to a preset frequency range, and obtaining the impedance curve of the ultrasonic transducer to be started according to the scanning results; and determining the minimum impedance value of the transducer to be started within the preset frequency range based on the impedance curve.

[0071] The aforementioned preset frequency range can be set according to the frequency of the ultrasonic transducer during normal operation. For example, if the normal operating frequency of an ultrasonic transducer is 55.5kHz, this embodiment can take a range of ±1.5 as the aforementioned preset frequency range, that is, 54kHz to 57kHz. This can ensure that the range during subsequent scanning is not too small, which would make it impossible to find the minimum impedance value, and also ensure that the range is not too large, which would lead to unnecessary scanning.

[0072] Understandably, the above-mentioned device can scan at a rate of 10kHz and a step frequency of 0.1Hz within a preset frequency range of 54kHz to 57kHz, completing the scan in approximately 3 seconds. Of course, it can also scan according to other preset frequency ranges, rates, and step frequencies, but this embodiment does not limit this.

[0073] It should be understood that the aforementioned device can obtain real-time impedance by acquiring the voltage across the ultrasonic scalpel and the received current, and generate the aforementioned impedance curve, as referenced. Figure 3 , Figure 3 This is a schematic diagram of current and voltage acquisition in the constant amplitude control method for the ultrasonic transducer of the present invention, as shown below. Figure 3As shown, the aforementioned device can be equipped with an ultrasonic power supply, which can output a sinusoidal signal with a frequency of fs to the ultrasonic scalpel. A current transformer T1 can be connected in series in the circuit, and the magnitude of the current corresponding to the sinusoidal signal transmitted to the ultrasonic scalpel can be collected through the current transformer T1 (i.e., Figure 3 In the middle (I1), the ultrasonic scalpel can be connected in parallel with a transformer T2, which can be used to collect the voltage across the ultrasonic scalpel (i.e., Figure 3 (China U1).

[0074] Next, after acquiring the current I1 and voltage U1, since both I1 and U1 are analog signals, they need to be converted into digital signals to obtain the impedance, as shown in the following figure. Figure 4 , Figure 4 This is a schematic diagram of impedance calculation in the constant amplitude control method for the ultrasonic transducer of the present invention, as shown below. Figure 4 As shown, the analog signal current I1 can be converted into a digital signal using an AD acquisition card, and the analog signal voltage U1 can be converted into a digital signal using another AD acquisition card. These signals are then input to the RMS in the FPGA chip for effective value calculation to obtain the effective current value I. RMS and the effective value of voltage U RMS Finally, using Ohm's law, we can obtain the impedance Z = U. RMS / I RMS .

[0075] At the same time, continue as Figure 4 As shown, the digital signal current I1 and digital signal voltage U1 can be input into the FPGA chip for FFT to perform fast Fourier transform, and obtain the phase difference Φ between the current I1 and the voltage U1, where Φ is an angle value, which can range from -180° to +180°. When Φ < 0, the current I1 leads the voltage U1, and when Φ > 0, the current I1 lags the voltage U1.

[0076] In practical use, the ultrasonic transducer can be scanned within a preset frequency range as described above. An impedance curve can then be plotted based on the obtained scan results, and referenced. Figure 5 , Figure 5 This is a schematic diagram of the impedance curve in the constant amplitude control method of the ultrasonic transducer of the present invention. Within the frequency range of 54kHz to 57kHz, the impedance curve and phase angle (i.e., the aforementioned phase difference) curve of the ultrasonic scalpel can be seen as follows: Figure 5 As shown, in Figure 5 In the middle, it is not difficult to find the phase angle (i.e. Figure 5 The impedance first increases and then decreases during the phase, while it first decreases, then increases, and then decreases again. Since the normal operating frequency of the ultrasonic transducer is 55.5kHz, selecting the portion of impedance reduction before 55.5kHz facilitates subsequent startup because the current needs to increase. Therefore, the portion of impedance reduction is preferentially selected, thus remaining within the preset range. Figure 5The impedance value corresponding to point ③ is the minimum impedance value mentioned above, denoted as Z. s The frequency corresponding to point ③ can be taken as the target operating frequency mentioned above, denoted as F. s The phase angle corresponding to point ③ is denoted as Φ. s Point ③ is the resonance point.

[0077] Step S02: Select the process adjustment frequency and the target operating frequency from the preset frequency range based on the minimum impedance value.

[0078] It should be noted that, since increasing the frequency from a lower value to the target operating frequency at a constant speed may still result in the voltage being higher than the safe voltage, this is because the current is also increasing during the process. Even if the impedance is decreasing, the product of the two may still be higher than the safe voltage. Therefore, in this embodiment, the process of increasing the frequency from a lower value to the target operating frequency can be divided into multiple stages, where the frequency reached in each stage is the process adjustment frequency mentioned above. Specifically, step S02 includes: taking the frequency corresponding to the minimum impedance value as the target operating frequency based on the impedance curve; and selecting the process adjustment frequency from the preset frequency range according to the target operating frequency.

[0079] Understandably, when selecting, a certain number (at least one) of process adjustment frequencies can be randomly selected from 54kHz to the target operating frequency. This embodiment uses two for illustration, namely... Figure 5 The frequencies corresponding to ① and ② in the above process are used as adjustment frequencies. Point ① is the 1 / 2 power resonant point, and point ② is the 3 / 4 power resonant point. The frequency corresponding to point ① is denoted as F1, and the frequency corresponding to point ② is denoted as F2. The phase angle corresponding to point ① is denoted as Φ1, and the phase angle corresponding to point ② is denoted as Φ2. The impedance corresponding to point ① is denoted as Z1, and the impedance corresponding to point ② is denoted as Z2. Therefore, the impedance relationship between the three points is: Z1 > Z2 > Z2. s Where Z1 = 2*Z s Z2 = (4 / 3) * Z s The phase angle relationship is: Φ s >Φ2>Φ1, the frequency relationship is: F s >F2>F1.

[0080] Step S03: Generate a soft-start frequency range based on the process adjustment frequency and the target operating frequency.

[0081] It should be understood that F1 to F s The corresponding range can be the aforementioned soft-start frequency range, or it can be understood as the range of adjusting the current from a lower value to the target operating current.

[0082] In a specific implementation, the above-mentioned device can scan the ultrasonic transducer according to a preset frequency range, and draw an impedance curve based on the scanning results. The frequency corresponding to the minimum impedance value in the impedance curve is taken as the target operating frequency, and a frequency lower than the target operating frequency is selected from the preset frequency range as the process adjustment frequency. Then, a soft start frequency range is generated based on the target operating frequency and the process adjustment frequency.

[0083] Furthermore, after determining the target operating frequency and the process adjustment frequency, a soft-start process can be generated by combining the target operating current, the target operating frequency, and the process adjustment frequency. This involves dividing the current increase to the target operating current and the frequency increase to the target operating frequency into stages. For example, in a certain stage, the frequency is increased from F1 to F2 while the current remains unchanged, or the current is increased while the frequency remains unchanged. At the same time, the voltage of the ultrasonic scalpel is collected during this stage. If the peak voltage during this stage is less than the safe voltage, it indicates that the division meets the requirements, and the aforementioned soft-start process can be generated based on this division.

[0084] Step S20: Determine the slow-start process based on the slow-start frequency range and the target operating current. The slow-start process is a process that ensures the peak voltage of the ultrasonic transducer to be started does not exceed the safe voltage within the slow-start frequency range.

[0085] Since the current increase to the target operating current and the frequency increase to the target operating frequency can be divided into stages in advance, and the above-mentioned soft start process is generated from the division results that meet the requirements, in actual use, the corresponding soft start process can be selected based on the soft start frequency range of different ultrasonic transducers and the target operating current for soft start. In addition, the peak voltage of the ultrasonic transducer in the soft start process will not be higher than the safe voltage, so there will be no overshoot.

[0086] Step S30: Start the ultrasonic transducer to be started according to the slow start procedure, and perform constant amplitude control after the ultrasonic transducer to be started is started.

[0087] It should be noted that since the final frequency of the above-mentioned slow start process is the target operating frequency and the final current is the target operating current, the ultrasonic transducer can operate normally when the output frequency of the above-mentioned device reaches the target operating frequency and the output current reaches the target operating current, which means that the start-up is complete. Therefore, the above-mentioned device can then continue to output according to the target operating frequency and target operating current, and constant amplitude control is performed at this time, so that overshoot caused by regulation oscillation will not occur, thus improving the service life.

[0088] In this embodiment, the device can scan the ultrasonic transducer according to a preset frequency range and plot an impedance curve based on the scanning results. The frequency corresponding to the minimum impedance value in the impedance curve is taken as the target operating frequency, and a frequency lower than the target operating frequency is selected from the preset frequency range as the process adjustment frequency. Then, a soft-start frequency range is generated based on the target operating frequency and the process adjustment frequency. After determining the target operating frequency and the process adjustment frequency, a soft-start process can be generated by combining the target operating current, the target operating frequency, and the process adjustment frequency. Based on the soft-start frequency range of different ultrasonic transducers and the target operating current, the corresponding soft-start process is selected for soft-start. When the output frequency of the device reaches the target operating frequency and the output current reaches the target operating current, the ultrasonic transducer can operate normally, which indicates that the start-up is complete. Therefore, the device can then continuously output according to the target operating frequency and the target operating current, and perform constant amplitude control at this time, so as not to cause overshoot due to regulation oscillation, thereby improving the service life.

[0089] refer to Figure 6 , Figure 6 This is a flowchart illustrating the second embodiment of the constant amplitude control method for ultrasonic transducers of the present invention.

[0090] Since the soft-start process may include both frequency regulation and current regulation processes, in order to generate the soft-start process, such as Figure 6 As shown, in this embodiment, after step S03, the following step is also included:

[0091] Step S04: Divide the soft start frequency range according to the process adjustment frequency and the target operating frequency, and determine the frequency adjustment stage according to the division result.

[0092] After determining the process adjustment frequency and the target operating frequency, the above-mentioned equipment can take the range between the minimum process adjustment frequency and the target operating frequency as the above-mentioned soft start frequency range, and divide the soft start frequency range into two stages, namely, the period between two adjacent process adjustment frequencies or the period between the process adjustment frequency and the target operating frequency, and take the divided stages as the above-mentioned frequency adjustment stages.

[0093] For example, in this embodiment, points ①, ②, and ③ are still used for explanation, that is, the process adjustment frequencies are F1 and F2 respectively, and the target operating frequency is F. s Therefore, the soft start frequency range is F1 to F s For F1~F s By dividing the frequency into two stages, we can obtain two frequency adjustment stages, namely F1~F2 and F2~F2. s F1 is the starting frequency for the soft start process.

[0094] Step S05: Determine the process regulation current based on the target operating current, and determine the current regulation stage according to the process regulation current and the target operating current.

[0095] Since increasing the current from 0 to the target operating current from the beginning may still cause the voltage to be higher than the safe voltage, this embodiment can also divide the target operating current, determine the process regulation current corresponding to each frequency regulation stage, and take the period between two adjacent process regulation currents as a stage or the period between the process regulation current and the target operating current as a stage, both of which are regarded as the above-mentioned current regulation stages.

[0096] For example, if the target operating current is I03, the current variation range from 0 to I03 can be divided. A certain proportion of the target operating current can be used as the process regulating current. The specific proportion and quantity of the process regulating current can also be set according to the actual situation. In this embodiment, two process regulating currents are used for illustration, which are denoted as I01 and I02 respectively, and the proportions are 0.3 and 0.7 respectively. Therefore, I01 = 0.3 * I03 and I02 = 0.7 * I03.

[0097] It should be noted that the above ratio should be less than 1, and if there are multiple ratios, they should be arranged in an increasing order to ensure that the current increases to the target operating current.

[0098] Based on the target operating current I03 and the process regulating currents I01 and I02, the current regulation stages I01 to I02 and I02 to I03 can be obtained respectively, and I01 is the starting current for the soft start process.

[0099] Step S06: Generate a soft-start process based on the frequency adjustment stage and the current adjustment stage.

[0100] After determining the frequency adjustment stage and the current adjustment stage, a combined test can be performed based on the frequency adjustment stage and the current adjustment stage. Specifically, the current frequency of the transducer to be started is adjusted during the frequency adjustment stage, and the current current of the transducer to be started is adjusted during the current adjustment stage. The current voltage of the transducer to be started is collected in real time during the adjustment process, and the peak voltage is determined based on the collection results when the adjustment is completed. When the peak voltage does not exceed the safe voltage, a soft start process is generated based on the adjustment process.

[0101] It should be noted that the above-mentioned device can adjust the frequency during the frequency adjustment phase and adjust the current during the current adjustment phase. Since F1 is the starting frequency and I01 is the starting current, when the frequency output by the above-mentioned device is adjusted to F1 and the output current increases from 0 to I01, it can be said that the soft start process has started.

[0102] Understandably, since both frequency and current are constantly changing, the voltage of the ultrasonic transducer is also constantly changing during this process. The aforementioned device can collect the current voltage of the ultrasonic transducer in real time and determine the peak voltage of the entire soft start process based on the collection results. If the peak voltage is less than the safe voltage, it indicates that the voltage of the entire process is less than the safe voltage, and the current soft start process is the required process.

[0103] To further understand the generation process of the aforementioned soft start procedure, this embodiment uses two soft start procedures for illustration, but is not limited to only these two procedures. (Refer to...) Figures 7 to 10 , Figure 7 This is a schematic representation of the first soft-start phase action in the constant amplitude control method for the ultrasonic transducer of the present invention. Figure 8 This is a timing diagram showing the current current and current voltage of the ultrasonic transducer during the first soft-start phase of the constant amplitude control method for the ultrasonic transducer in this invention. Figure 9 This is a schematic representation of the second soft-start phase action in the constant amplitude control method for the ultrasonic transducer of the present invention. Figure 10 This is a timing diagram of the current electrical state and current voltage of the ultrasonic transducer under the second soft-start-stage action in the constant amplitude control method of the ultrasonic transducer of the present invention.

[0104] First Figure 7 and Figure 8 As shown, the first type of soft-start process is explained. This process is divided into 7 stages, denoted as A1 to A7. The time periods corresponding to each stage are denoted as 0 to T1, T1 to T2, T2 to T3, T3 to T4, T4 to T5, T5 to T6, and T6 onwards. Since the current current and frequency are directly adjusted throughout the process, the control quantity for the entire process is the current current (i.e.,... Figure 7 The ultrasonic working current and the current frequency (i.e.) Figure 7 The ultrasonic operating frequency F is used, and the process changes during adjustment may include the phase angle Φ and impedance Z. The result of each stage is the current voltage of the ultrasonic transducer (i.e., the operating frequency F). Figure 7 The working voltage of the ultrasonic instrument is as follows: F1 increases to F A The stages are A3, A4, A5, and A6, which constitute the frequency adjustment stages. The stages from I01 to I03 are A1 and A3, which constitute the current adjustment stages. The current frequency can be kept constant during the current adjustment stage, and the current can be kept constant during the frequency adjustment stage. Alternatively, the current frequency can be adjusted simultaneously during the current adjustment stage, or a stage can be set where neither the current current nor the current frequency is adjusted. Ultimately, it is only necessary to ensure that the peak voltage within this stage does not exceed the safe voltage.

[0105] exist Figure 7 In the initial A1 stage, the current output frequency can be kept constant at F1, and the current can be increased uniformly to I01, while combining... Figure 5 It can be seen that in this stage, the phase angle Φ can remain constant at Φ1, the impedance Z can remain constant at Z1, and the current voltage in this stage increases uniformly from 0 to U03. Combined with... Figure 8 It can be seen that even if the impedance is large in stage A1, the voltage U03 obtained is small because the current I01 is small and will not be higher than the safe voltage U0. This stage is also the current adjustment and frequency setting stage.

[0106] Next, we enter stage A2. Since a period of inactivity is allowed after the initial adjustment to allow the ultrasonic transducer to stabilize and facilitate subsequent adjustments, stage A2 can maintain the current frequency F1 and current I01 unchanged. Consequently, the phase angle Φ can remain constant at Φ1, and the impedance Z can remain constant at Z1. Figure 8 It can be seen that the current voltage remains unchanged at U03, and this stage is the constant current and constant frequency stage.

[0107] Then, entering stage A3, the current frequency is increased uniformly from F1 to F2 (i.e., Figure 7 The resonant frequency increases uniformly to F2, while the current increases uniformly from I01 to I02, thus increasing the phase angle Φ to Φ2 and reducing the impedance Z to Z2. Although the impedance decreases, the current increases, as... Figure 8 As shown, the current voltage is increasing and a peak voltage Umax may occur. Umax is less than the safe voltage U0. This stage is also the stage of adjusting the current and frequency.

[0108] Then it enters stage A4, continuing to increase the current frequency at a constant rate (i.e. Figure 7 The resonant frequency increases at a constant speed. However, during this stage, the current remains constant at I02, the phase angle Φ increases, and the impedance Z decreases. Since the current remains constant and the impedance Z decreases, the current voltage decreases. This stage is also the frequency modulation and constant current stage.

[0109] Then, entering stage A5, the current frequency continues to increase at a constant rate, and the current is also increased at a constant rate until I03 (i.e., Figure 7 When the current increases at a constant rate to I03, the phase angle Φ increases and the impedance Z decreases. At this time, due to the decrease in impedance, the current voltage will also decrease. This stage is also the stage of adjusting the current and frequency.

[0110] Then we enter stage A6, where the current frequency can increase uniformly to F. s The current remains constant at I03, and the phase angle Φ increases to Φ. s The impedance Z decreases to Z sAs the impedance reaches its minimum value, the current voltage continues to decrease. This stage is also known as the frequency modulation and constant current stage.

[0111] Finally, we enter stage A7, since the current frequency has reached the target operating frequency F. s The current has reached the target operating current I03, therefore, at this stage, the preset dynamic frequency tracking algorithm can be activated for PID phase-locked loop (PID) frequency tracking. Figure 7 In the middle, resonant frequency tracking is enabled (phase constant), and at the same time, the preset dynamic constant current algorithm is enabled to perform PID constant current (i.e. Figure 7 (I03 remains unchanged, constant current), phase angle Φ remains unchanged. s The phase remains constant, and the impedance Z remains unchanged. s The voltage remains unchanged, and the current voltage decreases to U01. This stage is also the constant current and constant phase stage.

[0112] Once stage A7 is reached, it indicates that the ultrasonic transducer has been working stably. Then, the resonant frequency and current of the ultrasonic transducer can be tracked and controlled. The preset dynamic frequency tracking algorithm and the preset dynamic constant current algorithm can be set according to the actual situation. This embodiment does not impose any restrictions on this.

[0113] For example Figure 9 and Figure 10 As shown, the second type of soft-start process is explained. This process is also divided into 7 stages, denoted as A1 to A7. The time periods corresponding to each stage are denoted as 0 to T1, T1 to T2, T2 to T3, T3 to T4, T4 to T5, T5 to T6, and after T6. The time from 0 to T6 is approximately 50ms. Since the current current and frequency are directly adjusted throughout the process, the control variable for the entire process is the current current (i.e.,...). Figure 9 The ultrasonic working current and the current frequency (i.e.) Figure 9 The ultrasonic operating frequency F is used, and the process changes during adjustment may include the phase angle Φ and impedance Z. The result of each stage is the current voltage of the ultrasonic transducer (i.e., the operating frequency F). Figure 9 The working voltage of the ultrasonic instrument is as follows: F1 increases to F s The stages A3 and A5 are the frequency regulation stages mentioned above. The stages from I01 to I03 are A1, A4, and A3, which are the current regulation stages mentioned above. The current frequency can be kept constant during the current regulation stage, and the current can be kept constant during the frequency regulation stage. Alternatively, the current frequency can be adjusted simultaneously during the current regulation stage, or a stage can be set where neither the current current nor the current frequency is adjusted. Ultimately, it is only necessary to ensure that the peak voltage within this stage does not exceed the safe voltage.

[0114] exist Figure 9In the initial A1 stage, the current output frequency can be kept constant at F1, and the current can be increased uniformly to I01, while combining... Figure 5 It can be seen that in this stage, the phase angle Φ can remain constant at Φ1, the impedance Z can remain constant at Z1, and the current voltage in this stage increases uniformly from 0 to U03. Combined with... Figure 10 It can be seen that even if the impedance is large in stage A1, the voltage U03 obtained is small because the current I01 is small and will not be higher than the safe voltage U0. This stage is also the current adjustment and frequency setting stage.

[0115] Next, we enter stage A2. Since a period of inactivity is allowed after the initial adjustment to allow the ultrasonic transducer to stabilize and facilitate subsequent adjustments, stage A2 can maintain the current frequency F1 and current I01 unchanged. Consequently, the phase angle Φ can remain constant at Φ1, and the impedance Z can remain constant at Z1. Figure 10 It can be seen that the current voltage remains unchanged at U03, and this stage is the constant current and constant frequency stage.

[0116] Then, entering stage A3, the current frequency is increased uniformly from F1 to F2 (i.e., Figure 9 The resonant frequency increases uniformly to F2, while the current remains constant at I01. Consequently, the phase angle Φ increases to Φ2, and the impedance Z decreases to Z2. Although the impedance decreases, since the current remains constant, as... Figure 10 As shown, the current voltage is decreasing, and this stage is also the constant current and frequency modulation stage.

[0117] Next, we enter stage A4. The current frequency remains unchanged at F2, but in this stage, the current current increases at a constant rate to I02, the phase angle Φ remains unchanged at Φ2, and the impedance Z remains unchanged at Z2. Since the impedance remains unchanged, the current current increases, and the current voltage increases, and a peak voltage Umax will appear. Umax is less than the safe voltage U0. This stage is also the current adjustment and frequency setting stage.

[0118] Upon entering stage A5, the current frequency increases uniformly to F. s The current remains constant at I02, and the phase angle Φ increases to Φ. s As the impedance Z decreases, the voltage continues to decrease as the impedance reaches its minimum value, and a minimum voltage U01 will appear. This stage is also the frequency modulation and constant current stage.

[0119] Next, we enter stage A6, since the current frequency has reached the target operating frequency F. s Therefore, a preset dynamic frequency tracking algorithm can be enabled at this stage to perform PID phase-locked loop (i.e., frequency tracking). Figure 9 Resonant frequency tracking is enabled (constant phase), but the current has not yet reached I03. Therefore, the current can be increased uniformly to I03. At this time, the phase angle Φ remains constant.s With constant phase, impedance Z decreases to Z s As the current increases, the current voltage will increase to U02. This process is also known as the current adjustment and constant phase stage.

[0120] Finally, in stage A7, since the current has reached the target operating current I03, the preset dynamic constant current algorithm can be activated in this stage to perform PID constant current (i.e., Figure 9 (I03 remains unchanged, constant current), phase angle Φ remains unchanged. d The phase remains constant, and the impedance Z remains unchanged. s The voltage remains unchanged, and the current voltage U02 remains constant. This stage is also known as the constant current and constant phase stage.

[0121] It should be emphasized that the stage divisions of the above two processes are used to understand this embodiment. The soft start process can also be implemented through other stages, as long as the peak voltage in this process does not exceed the safe voltage.

[0122] Furthermore, after the device starts the ultrasonic transducer according to the above-mentioned soft start procedure, when the current current of the ultrasonic transducer to be started reaches the target operating current, the preset dynamic constant current algorithm can be activated; when the current frequency of the ultrasonic transducer to be started reaches the target operating frequency, the preset dynamic frequency tracking algorithm can be activated. The specific process has been explained above, so it will not be repeated here.

[0123] In practical implementation, the above-mentioned device can divide the soft start frequency range and determine the frequency adjustment stage based on the division result. At the same time, it can determine the current adjustment stage based on the target operating current. Based on the current adjustment stage and the frequency adjustment stage, the above-mentioned soft start process can be generated. In actual use, the frequency and current of the ultrasonic transducer are controlled in real time through the soft start process, thereby controlling the voltage to be lower than the safe voltage, thus protecting the ceramic plate of the ultrasonic transducer, improving stability and extending service life.

[0124] It should also be emphasized that this embodiment can also select the frequency corresponding to the maximum impedance value within a preset frequency range as the protection frequency during scanning, i.e., as shown below. Figure 5 As shown, the impedance value is the largest at point ④. Point ④ is taken as the anti-resonance point, and the frequency corresponding to point ④ is denoted as F. p The phase angle corresponding to point ④ is denoted as Φ. p The impedance corresponding to point ④ is denoted as Z. p Therefore, the impedance relationship between the four points is: Z p >Z1>Z2>Z s The phase angle relationship is: Φ p ≈Φ s >Φ2>Φ1, the frequency relationship is: F p ≈Fs >F2>F1, because the frequency is in F p The impedance is at its maximum at this time, which in turn leads to a sharp increase in voltage. Therefore, the frequency F can be... p Set to the protection frequency; when the current frequency is detected to have reached the protection frequency, protective measures will be taken immediately.

[0125] Furthermore, this embodiment of the invention also proposes a storage medium storing an ultrasonic transducer constant amplitude control program, which, when executed by a processor, implements the steps of the ultrasonic transducer constant amplitude control method described above.

[0126] Reference Figure 11 , Figure 11 This is a structural block diagram of the first embodiment of the ultrasonic transducer constant amplitude control device of the present invention.

[0127] like Figure 11 As shown, the ultrasonic transducer constant amplitude control device proposed in this embodiment of the invention includes:

[0128] The range acquisition module 111 is used to acquire the soft-start frequency range and target operating current corresponding to the ultrasonic transducer to be started;

[0129] The process determination module 112 is used to determine a slow start process based on the slow start frequency range and the target operating current. The slow start process is a process that ensures the peak voltage of the ultrasonic transducer to be started does not exceed the safe voltage within the slow start frequency range.

[0130] The process initiation module 113 is used to start the ultrasonic transducer to be started according to the slow start process, and to perform constant amplitude control after the ultrasonic transducer to be started is started.

[0131] In this embodiment, the device can scan the ultrasonic transducer according to a preset frequency range and plot an impedance curve based on the scanning results. The frequency corresponding to the minimum impedance value in the impedance curve is taken as the target operating frequency, and a frequency lower than the target operating frequency is selected from the preset frequency range as the process adjustment frequency. Then, a soft-start frequency range is generated based on the target operating frequency and the process adjustment frequency. After determining the target operating frequency and the process adjustment frequency, a soft-start process can be generated by combining the target operating current, the target operating frequency, and the process adjustment frequency. Based on the soft-start frequency range of different ultrasonic transducers and the target operating current, the corresponding soft-start process is selected for soft-start. When the output frequency of the device reaches the target operating frequency and the output current reaches the target operating current, the ultrasonic transducer can operate normally, which indicates that the start-up is complete. Therefore, the device can then continuously output according to the target operating frequency and the target operating current, and perform constant amplitude control at this time, so as not to cause overshoot due to regulation oscillation, thereby improving the service life.

[0132] In one implementation, the range acquisition module 111 is further configured to determine the minimum impedance value of the ultrasonic transducer to be started within a preset frequency range; select a process adjustment frequency and a target operating frequency from the preset frequency range based on the minimum impedance value; and generate a soft-start frequency range based on the process adjustment frequency and the target operating frequency.

[0133] In one implementation, the range acquisition module 111 is further configured to scan the ultrasonic transducer to be started according to a preset frequency range, and obtain the impedance curve of the ultrasonic transducer to be started according to the scanning result; and determine the minimum impedance value of the transducer to be started within the preset frequency range based on the impedance curve.

[0134] In one implementation, the range acquisition module 111 uses the frequency corresponding to the minimum impedance value as the target operating frequency based on the impedance curve; and selects a process adjustment frequency from the preset frequency range according to the target operating frequency.

[0135] Based on the first embodiment of the ultrasonic transducer constant amplitude control device of the present invention, a second embodiment of the ultrasonic transducer constant amplitude control device of the present invention is proposed.

[0136] In this embodiment, the range acquisition module 111 is further configured to divide the soft start frequency range according to the process adjustment frequency and the target operating frequency, and determine the frequency adjustment stage according to the division result; determine the process adjustment current based on the target operating current, and determine the current adjustment stage according to the process adjustment current and the target operating current; and generate a soft start process based on the frequency adjustment stage and the current adjustment stage.

[0137] In one implementation, the range acquisition module 111 is further configured to adjust the current frequency of the transducer to be started during the frequency adjustment phase and adjust the current current of the transducer to be started during the current adjustment phase; collect the current voltage of the transducer to be started in real time during the adjustment process, and determine the peak voltage based on the collection results when the adjustment is completed; and generate a soft start process based on the adjustment process when the peak voltage does not exceed the safe voltage.

[0138] In one implementation, the process determination module 112 is further configured to activate a preset dynamic constant current algorithm when the current of the ultrasonic transducer to be started reaches the target operating current; and to activate a preset dynamic frequency tracking algorithm when the current frequency of the ultrasonic transducer to be started reaches the target operating frequency.

[0139] Other embodiments or specific implementations of the ultrasonic transducer constant amplitude control device of the present invention can be referred to the above-described method embodiments, and will not be repeated here.

[0140] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0141] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0142] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory / random access memory, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0143] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for constant amplitude control of an ultrasonic transducer, characterized in that, The method includes the following steps: Obtain the soft-start frequency range and target operating current corresponding to the ultrasonic transducer to be started; The slow-start process is determined based on the slow-start frequency range and the target operating current. The slow-start process is a process that ensures the peak voltage of the ultrasonic transducer to be started does not exceed the safe voltage within the slow-start frequency range. The ultrasonic transducer to be started is started according to the slow start procedure, and constant amplitude control is performed after the ultrasonic transducer to be started is completed. Before the step of obtaining the soft-start frequency range and target operating current corresponding to the ultrasonic transducer to be started, the method further includes: Determine the minimum impedance value of the ultrasonic transducer to be started within a preset frequency range; select a process adjustment frequency and a target operating frequency from the preset frequency range based on the minimum impedance value; generate a soft-start frequency range based on the process adjustment frequency and the target operating frequency; The step of performing constant amplitude control after the ultrasonic transducer to be started has been started includes: When the current of the ultrasonic transducer to be started reaches the target operating current, a preset dynamic constant current algorithm is activated; when the current frequency of the ultrasonic transducer to be started reaches the target operating frequency, a preset dynamic frequency tracking algorithm is activated.

2. The constant amplitude control method for an ultrasonic transducer as described in claim 1, characterized in that, The step of determining the minimum impedance value of the ultrasonic transducer to be activated within a preset frequency range includes: The ultrasonic transducer to be activated is scanned within a preset frequency range, and the impedance curve of the ultrasonic transducer to be activated is obtained based on the scanning results. The minimum impedance value of the ultrasonic transducer to be activated within the preset frequency range is determined based on the impedance curve.

3. The constant amplitude control method for an ultrasonic transducer as described in claim 2, characterized in that, The step of selecting the process adjustment frequency and the target operating frequency from the preset frequency range based on the minimum impedance value includes: Based on the impedance curve, the frequency corresponding to the minimum impedance value is taken as the target operating frequency; The process adjustment frequency is selected from the preset frequency range according to the target operating frequency.

4. The constant amplitude control method for an ultrasonic transducer as described in claim 3, characterized in that, After the step of generating a soft-start frequency range based on the process adjustment frequency and the target operating frequency, the method further includes: The soft-start frequency range is divided according to the process adjustment frequency and the target operating frequency, and the frequency adjustment stage is determined according to the division result; The process regulation current is determined based on the target operating current, and the current regulation stage is determined based on the process regulation current and the target operating current. A soft-start process is generated based on the frequency regulation stage and the current regulation stage.

5. The constant amplitude control method for an ultrasonic transducer as described in claim 4, characterized in that, The step of generating a soft-start process based on the frequency regulation stage and the current regulation stage includes: In the frequency adjustment phase, the current frequency of the ultrasonic transducer to be started is adjusted, and in the current adjustment phase, the current of the ultrasonic transducer to be started is adjusted. The current voltage of the ultrasonic transducer to be started is collected in real time during the adjustment process, and the peak voltage is determined based on the collection results when the adjustment is completed. When the peak voltage does not exceed the safe voltage, a soft start process is generated based on the adjustment process.

6. A constant amplitude control device for an ultrasonic transducer, characterized in that, The device includes: The range acquisition module is used to acquire the soft-start frequency range and target operating current corresponding to the ultrasonic transducer to be started; The process determination module is used to determine the slow start process based on the slow start frequency range and the target operating current. The slow start process is a process that ensures the peak voltage of the ultrasonic transducer to be started does not exceed the safe voltage within the slow start frequency range. The process start-up module is used to start the ultrasonic transducer to be started according to the soft start-up process, and to perform constant amplitude control after the ultrasonic transducer to be started is started. The range acquisition module is further configured to determine the minimum impedance value of the ultrasonic transducer to be started within a preset frequency range; select a process adjustment frequency and a target operating frequency from the preset frequency range based on the minimum impedance value; and generate a soft-start frequency range based on the process adjustment frequency and the target operating frequency. The process startup module is also used to activate a preset dynamic constant current algorithm when the current of the ultrasonic transducer to be started reaches the target operating current; and to activate a preset dynamic frequency tracking algorithm when the current frequency of the ultrasonic transducer to be started reaches the target operating frequency.

7. A constant amplitude control device for an ultrasonic transducer, characterized in that, The device includes: a memory, a processor, and an ultrasonic transducer constant amplitude control program stored in the memory and executable on the processor, the ultrasonic transducer constant amplitude control program being configured to implement the steps of the ultrasonic transducer constant amplitude control method as described in any one of claims 1 to 5.

8. A storage medium, characterized in that, The storage medium stores an ultrasonic transducer constant amplitude control program, which, when executed by a processor, implements the steps of the ultrasonic transducer constant amplitude control method as described in any one of claims 1 to 5.

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