A method, device and system for generating a driving signal for a sensor test device

Abstract

The present invention discloses a method, device and system for generating a drive signal for sensor testing equipment. The method comprises the following steps: performing improved dual-carrier hybrid control on the total regulation voltage of the sensor testing equipment to obtain a carrier peak modulation signal and a conduction angle modulation signal; obtaining a first regulation amount and a second regulation amount based on a first output voltage of an LCC resonant converter of a first module and a second output voltage of an LCC resonant converter of a second module; superimposing the first regulation amount and the second regulation amount on the conduction angle modulation signal respectively to obtain a first module conduction angle modulation signal and a second module conduction angle modulation signal; performing dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal; and combining the first modulation signal, the second modulation signal, the carrier peak modulation signal and the second module conduction angle to obtain drive signals for all switching tubes. The present invention can reduce output voltage ripple and reduce the volume of filter capacitors.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic technology processing, and in particular to a method, device and system for generating a driving signal for sensor testing equipment. Background Art

[0002] Sensors are crucial for the control, protection, and metering of DC distribution networks. Accurate testing of their measurement performance is crucial for the safe and stable operation of DC distribution networks. Faced with challenges posed by emerging technologies and application scenarios, the importance of sensor test equipment for DC distribution networks has become increasingly prominent. In recent years, with the advancement of power supply control technology and new power devices, modularization has become a new direction for sensor test equipment, improving power supply design and reducing component electrical stress. For example, the Input-Parallel-Output-Series (IPOS) LCC resonant converter topology can effectively improve sensor testing accuracy and efficiency. However, research on the IPOS LCC resonant converter topology is limited. In current research, conventional variable frequency control (VFC) adjusts the switching frequency of each module to ensure equal output voltage. Traditional dual-loop control methods use a voltage stabilization loop to adjust the switching frequency, while a voltage balancing loop adjusts the conduction angle of each module.

[0003] Since the switching frequency of each module in the variable frequency control is different, the interleaved control technology cannot be used, which results in a large output voltage ripple and increases the size of the filter. Therefore, it is necessary to design a reasonable control method so that the converter can operate within a wide range of operating conditions, while shortening the switching frequency change and achieving soft switching of the switch tube. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method, device and system for generating a driving signal for a sensor test device, which can reduce output voltage ripple and reduce the volume of the filter capacitor.

[0005] In order to solve the above technical problems, the present invention provides a method for generating a driving signal for a sensor testing device, wherein the sensor testing device includes a first module LCC resonant converter and a second module LCC resonant converter, wherein the first module LCC resonant converter includes a first switching tube, and the second module LCC resonant converter includes a second switching tube. The driving signal generating method includes:

[0006] Collecting a total output voltage of the sensor test device, comparing the total output voltage with a total reference voltage to obtain a total error, and performing PI regulation on the total error to obtain a total regulated voltage;

[0007] Performing an improved dual-carrier hybrid control process on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal;

[0008] collecting a first output voltage of the LCC resonant converter of the first module and a second output voltage of the LCC resonant converter of the second module at the same time, and after determining to compare the first output voltage and the second output voltage with a first reference voltage to obtain a first error value and a second error value respectively, performing PI adjustment on the first error value and the second error value to obtain a first adjustment amount and a second adjustment amount;

[0009] Superimposing the first adjustment value and the second adjustment value on the conduction angle modulation signal respectively to obtain a first module conduction angle modulation signal and a second module conduction angle modulation signal;

[0010] Performing dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal;

[0011] The first modulation signal, the second modulation signal, the carrier peak modulation signal and the second module conduction angle modulation signal are input into a driving circuit to obtain driving signals for the first switching tube and the second switching tube.

[0012] In one possible implementation, performing dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal specifically includes:

[0013] Inputting the carrier peak modulation signal into an outer loop control loop, so that the carrier peak modulation signal is input into a first modulation signal calculation formula in the outer loop control loop to obtain and output a first modulation signal;

[0014] Inputting the carrier peak modulation signal and the first module conduction angle modulation signal into an inner loop control loop, so that in the inner loop control loop, based on the first modulation signal, a second modulation signal calculation formula is selected, and the first module conduction angle modulation signal and the carrier peak modulation signal are input into the second modulation signal calculation formula to obtain and output a second modulation signal;

[0015] The calculation formula of the first modulation signal is as follows:

[0016] ;

[0017] Where, is the first modulation signal, is the carrier peak modulation signal;

[0018] The calculation formula of the second modulation signal is as follows:

[0019] ;

[0020] Where, is the second modulation signal, It is the conduction angle modulation signal of the first module.

[0021] In one possible implementation, performing an improved dual-carrier hybrid control calculation on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal specifically includes:

[0022] Obtaining a switching frequency expression and a conduction angle expression in dual-carrier modulation, and obtaining a first relationship curve between the switching frequency and the conduction angle based on the switching frequency expression and the conduction angle expression;

[0023] Selecting a first conduction angle of a preset angle, calculating a first switching frequency under variable frequency control with minimum input voltage and maximum output power based on a variable frequency control output voltage gain expression, and setting a hybrid control curve based on the first conduction angle and the first switching frequency;

[0024] Calculating a first carrier slope and a second carrier slope in dual-carrier modulation based on the first relationship curve and the hybrid control curve;

[0025] A first curve slope of the hybrid control curve is obtained, and a carrier peak modulation signal and a conduction angle modulation signal are calculated and obtained based on the first curve slope, the total regulation voltage, the first carrier slope, and the second carrier slope.

[0026] In one possible implementation, calculating and obtaining a carrier peak modulation signal and a conduction angle modulation signal based on the first curve slope, the total regulation voltage, the first carrier slope, and the second carrier slope specifically includes:

[0027] Obtaining a first peak value of a second carrier in dual-carrier modulation, substituting the first peak value, the first curve slope, the total adjustment voltage, the first carrier slope, and the second carrier slope into a carrier peak modulation signal calculation formula to obtain a carrier peak modulation signal;

[0028] Substituting the first peak value, the total regulated voltage, the first carrier slope, and the second carrier slope into a conduction angle modulation signal calculation formula to obtain a conduction angle modulation signal;

[0029] The carrier peak modulation signal calculation formula is as follows:

[0030] ;

[0031] Where, is the carrier peak modulation signal, is the total regulated voltage, is the first peak, is the slope of the first curve, is the first carrier slope, is the second carrier slope;

[0032] The calculation formula of the conduction angle modulation signal is as follows:

[0033] ;

[0034] Where, is the conduction angle modulation signal.

[0035] In one possible implementation, calculating a first carrier slope and a second carrier slope in dual-carrier modulation based on the first relationship curve and the hybrid control curve specifically includes:

[0036] Based on the first relationship curve and the hybrid control curve, obtaining a first curve slope and a first intercept of the hybrid control curve, and obtaining a second curve slope and a second intercept of the first relationship curve;

[0037] Calculating a second carrier slope in dual-carrier modulation according to the first intercept and the second intercept;

[0038] The first carrier slope in dual-carrier modulation is calculated according to the first curve slope, the second curve slope and the second carrier slope.

[0039] In a possible implementation, the first carrier slope and the second carrier slope are as follows:

[0040] ;

[0041] Where, is the first carrier slope, is the second carrier slope, is the first peak, is the first intercept, is the slope of the first curve.

[0042] The present invention also provides a driving signal generating device for a sensor testing device, comprising: a total output voltage regulating module, a hybrid control module, a resonant converter voltage regulating module, a conduction angle modulation module, a dual-loop control module and a driving signal acquisition module;

[0043] The total output voltage adjustment module is configured to collect the total output voltage of the sensor test device, compare the total output voltage with the total reference voltage to obtain a total error, and perform PI adjustment on the total error to obtain a total regulated voltage.

[0044] The hybrid control module is used to perform improved dual-carrier hybrid control processing on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal;

[0045] The resonant converter voltage regulation module is configured to collect a first output voltage of the LCC resonant converter of the first module and a second output voltage of the LCC resonant converter of the second module, and after determining that the first output voltage and the second output voltage are compared with a first reference voltage and a first error value and a second error value are obtained respectively, perform PI regulation on the first error value and the second error value to obtain a first adjustment amount and a second adjustment amount;

[0046] The conduction angle modulation module is configured to perform superposition processing on the first adjustment amount and the second adjustment amount and the conduction angle modulation signal respectively to obtain a first module conduction angle modulation signal and a second module conduction angle modulation signal;

[0047] The dual-loop control module is used to perform dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal;

[0048] The drive signal acquisition module is used to input the first modulation signal, the second modulation signal, the carrier peak modulation signal and the second module conduction angle modulation signal into the drive circuit to obtain the drive signals of the first switching tube and the second switching tube.

[0049] In one possible implementation, the dual-loop control module is configured to perform dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal, specifically including:

[0050] Inputting the carrier peak modulation signal into an outer loop control loop, so that the carrier peak modulation signal is input into a first modulation signal calculation formula in the outer loop control loop to obtain and output a first modulation signal;

[0051] Inputting the carrier peak modulation signal and the first module conduction angle modulation signal into an inner loop control loop, so that in the inner loop control loop, based on the first modulation signal, a second modulation signal calculation formula is selected, and the first module conduction angle modulation signal and the carrier peak modulation signal are input into the second modulation signal calculation formula to obtain and output a second modulation signal;

[0052] The calculation formula of the first modulation signal is as follows:

[0053] ;

[0054] Where, is the first modulation signal, is the carrier peak modulation signal;

[0055] The calculation formula of the second modulation signal is as follows:

[0056] ;

[0057] Where, is the second modulation signal, It is the conduction angle modulation signal of the first module.

[0058] In one possible implementation, the hybrid control module is configured to perform an improved dual-carrier hybrid control calculation on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal, specifically including:

[0059] Obtaining a switching frequency expression and a conduction angle expression in dual-carrier modulation, and obtaining a first relationship curve between the switching frequency and the conduction angle based on the switching frequency expression and the conduction angle expression;

[0060] Selecting a first conduction angle of a preset angle, calculating a first switching frequency under variable frequency control with minimum input voltage and maximum output power based on a variable frequency control output voltage gain expression, and setting a hybrid control curve based on the first conduction angle and the first switching frequency;

[0061] Calculating a first carrier slope and a second carrier slope in dual-carrier modulation based on the first relationship curve and the hybrid control curve;

[0062] A first curve slope of the hybrid control curve is obtained, and a carrier peak modulation signal and a conduction angle modulation signal are calculated and obtained based on the first curve slope, the total regulation voltage, the first carrier slope, and the second carrier slope.

[0063] In one possible implementation, the hybrid control module is configured to calculate and obtain a carrier peak modulation signal and a conduction angle modulation signal based on the first curve slope, the total regulated voltage, the first carrier slope, and the second carrier slope, specifically including:

[0064] Obtaining a first peak value of a second carrier in dual-carrier modulation, substituting the first peak value, the first curve slope, the total adjustment voltage, the first carrier slope, and the second carrier slope into a carrier peak modulation signal calculation formula to obtain a carrier peak modulation signal;

[0065] Substituting the first peak value, the total regulated voltage, the first carrier slope, and the second carrier slope into a conduction angle modulation signal calculation formula to obtain a conduction angle modulation signal;

[0066] The carrier peak modulation signal calculation formula is as follows:

[0067] ;

[0068] Where, is the carrier peak modulation signal, is the total regulated voltage, is the first peak, is the slope of the first curve, is the first carrier slope, is the second carrier slope;

[0069] The calculation formula of the conduction angle modulation signal is as follows:

[0070] ;

[0071] Where, is the conduction angle modulation signal.

[0072] In a possible implementation, the hybrid control module is configured to calculate the first carrier slope and the second carrier slope in dual-carrier modulation based on the first relationship curve and the hybrid control curve, specifically including:

[0073] Based on the first relationship curve and the hybrid control curve, obtaining a first curve slope and a first intercept of the hybrid control curve, and obtaining a second curve slope and a second intercept of the first relationship curve;

[0074] Calculating a second carrier slope in dual-carrier modulation according to the first intercept and the second intercept;

[0075] The first carrier slope in dual-carrier modulation is calculated according to the first curve slope, the second curve slope and the second carrier slope.

[0076] In a possible implementation, the first carrier slope and the second carrier slope are as follows:

[0077] ;

[0078] Where, is the first carrier slope, is the second carrier slope, is the first peak, is the first intercept, is the slope of the first curve.

[0079] The present invention also provides a driving signal generating system for a sensor testing device, comprising: a sensor testing device, and a driving signal generating device for the sensor testing device as described above;

[0080] The sensor testing device is connected to a driving signal generating device of the sensor testing device;

[0081] The sensor testing device includes a first module LCC resonant converter and a second module LCC resonant converter, wherein the first module LCC resonant converter includes a first switching tube, and the second module LCC resonant converter includes a second switching tube.

[0082] The present invention also provides a terminal device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the drive signal generating method of the sensor testing device as described in any one of the above items is implemented.

[0083] The present invention also provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the drive signal generation method for the sensor testing device as described in any one of the above.

[0084] The present invention provides a method, device, and system for generating a driving signal for a sensor test device. Compared with the prior art, the present invention has the following advantages:

[0085] By improving the dual-carrier hybrid control of the total regulation voltage of the sensor test equipment, a carrier peak modulation signal and a conduction angle modulation signal are obtained; based on the first output voltage of the first module LCC resonant converter and the second output voltage of the second module LCC resonant converter, a first regulation amount and a second regulation amount are obtained; by superimposing the first regulation amount and the second regulation amount on the conduction angle modulation signal respectively, a first module conduction angle modulation signal and a second module conduction angle modulation signal are obtained; a dual-loop control process is performed on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal; the first modulation signal, the second modulation signal, and the carrier peak modulation signal are combined into a first modulation signal and a second modulation signal. The control signal and the conduction angle of the second module are used to obtain the driving signals of all switching tubes. Compared with the prior art, the technical solution of the present invention obtains the carrier peak modulation signal and the conduction angle modulation signal under the reference parameters by improving the dual-carrier hybrid control, and then obtains the adjustment amount corresponding to the LCC resonant converter of each module and adjusts the conduction angle modulation signal of the LCC resonant converter of each module. It can achieve voltage balancing between different modules, and after obtaining the carrier peak modulation signal under the reference parameters, there is no need to adjust the carrier peak modulation signal, which can make the switching frequencies of the LCC resonant converters of each module the same, thereby reducing the output voltage ripple and reducing the volume of the filter capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 This is a flow chart of an embodiment of a method for generating a driving signal for a sensor testing device provided by the present invention;

[0087] Figure 2 This is a structural diagram of an embodiment of a driving signal generating device for a sensor testing device provided by the present invention;

[0088] Figure 3 This is a structural diagram of an embodiment of a drive signal generating system for a sensor testing device provided by the present invention;

[0089] Figure 4 This is a schematic diagram of an improved dual-carrier waveform according to an embodiment of the present invention. DETAILED DESCRIPTION

[0090] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0091] Example 1, see Figure 1 , Figure 1FIG. 1 is a flow chart of an embodiment of a method for generating a driving signal for a sensor testing device provided by the present invention. Figure 1 As shown, the method includes steps 101 to 106, which are specifically as follows:

[0092] In one embodiment, the sensor testing device includes a first module LCC resonant converter and a second module LCC resonant converter, wherein the first module LCC resonant converter includes a first switching tube, and the second module LCC resonant converter includes a second switching tube.

[0093] In one embodiment, the sensor testing device further includes a load .

[0094] In one embodiment, the first module LCC resonant converter includes a first switch tube, wherein the first switch tube includes a first primary side switch tube , the second primary side switch tube , the third primary side switch tube and the fourth primary switch tube The first module LCC resonant converter also includes a first series resonant capacitor , the first parallel resonant capacitor , the first resonant inductor , the first secondary rectifier diode , the second secondary rectifier diode , the third secondary rectifier diode , the fourth secondary rectifier diode , the first filter capacitor .

[0095] In one embodiment, the second module LCC resonant converter includes a second switch tube, wherein the second switch tube includes a fifth primary switch tube , the sixth primary switch tube , the seventh primary side switch tube and the eighth primary switch tube The second module LCC resonant converter also includes a second series resonant capacitor , the second parallel resonant capacitor , the second resonant inductor , the fifth secondary rectifier diode , the sixth secondary rectifier diode , the seventh secondary rectifier diode 、The eighth secondary rectifier diode , the second filter capacitor .

[0096] Step 101: Collect the total output voltage of the sensor test device, compare the total output voltage with the total reference voltage to obtain a total error, and perform PI regulation on the total error to obtain a total regulated voltage.

[0097] In one embodiment, the output of the sensor testing device is connected to a voltage measuring device, and the total output voltage of the sensor testing device is collected based on the voltage measuring device.

[0098] In one embodiment, when the total error is PI-adjusted, the total error is PI-adjusted using a PI control algorithm, wherein the PI control algorithm is composed of proportional control and integral control, the proportional control adjusts the output voltage according to the size of the total error, and the integral control adjusts the output voltage according to the duration of the total error.

[0099] Step 102: performing improved dual-carrier hybrid control processing on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal.

[0100] In one embodiment, a single-module LCC resonant converter is taken as an example to explain the existing dual-carrier modulation principle: the single-module output voltage of the single-module LCC resonant converter and its corresponding single-module reference voltage are PI-regulated through an error amplifier to output the single-module regulated voltage, and then based on the multiplexer MP, the single-module regulated voltage is compared with the first sawtooth wave vsaw1 and the second sawtooth wave vsaw2 in turn within half a switching cycle. After the single-module regulated voltage is compared with the first sawtooth wave vsaw1, the falling edge of the first sawtooth wave vsaw1 is triggered through the AND gate, so that the first The sawtooth wave vsaw1 becomes a carrier with adjustable peak value. After comparing the single-module regulated voltage with the second sawtooth wave vsaw2, a first control signal is generated. The falling edge of the first control signal triggers the JK trigger. When the second sawtooth wave vsaw2 reaches the single-module regulated voltage, the drive signals of the leading bridge arm switch tube S1 and the switch tube S2 are flipped. Similarly, the single-module regulated voltage is compared with the second sawtooth wave vsaw2 to generate a second control signal. The falling edge of the second sawtooth wave vsaw2 is triggered through the AND gate, making the second sawtooth wave vsaw2 become a carrier with a fixed peak value of Vc. The falling edge of Vc2 triggers the JK trigger. When the second sawtooth wave vsaw2 reaches Vc, the drive signals of the lagging bridge arm switch tube S3 and the switch tube S4 are flipped, where Vc is a slope of The peak value of the carrier.

[0101] Based on the above, it can be seen that the existing dual-carrier modulation principle is to perform carrier regulation on a single-module LCC resonant converter. However, since the switching frequency of each module is different, the interleaved control technology cannot be used, resulting in a large output voltage ripple and an increase in the size of the filter.

[0102] Therefore, in this embodiment, the dual-carrier modulation is improved to address the defects in the existing dual-carrier modulation principle.

[0103] In one embodiment, a switching frequency expression and a conduction angle expression in dual-carrier modulation are obtained, and a first relationship curve between the switching frequency and the conduction angle is obtained based on the switching frequency expression and the conduction angle expression.

[0104] Specifically, the switching frequency in dual carrier modulation and conduction angle The expressions are:

[0105] ;

[0106] ;

[0107] Where, is the switching frequency, is the first carrier slope, is the second carrier slope, is the first peak, is the conduction angle, is the total regulated voltage.

[0108] Preferably, , is the slope of the dual carrier, which can be determined by the critical soft switching condition of the LCC resonant converter. The slope is The peak value of the carrier, usually the auxiliary power supply voltage value.

[0109] In one embodiment, based on the switching frequency expression and the conduction angle expression, a first relationship curve between the switching frequency and the conduction angle is obtained as follows:

[0110] ;

[0111] Where, is the switching frequency, is the first carrier slope, is the second carrier slope, is the first peak, is the conduction angle.

[0112] In one embodiment, a first conduction angle of a preset angle is selected, and based on the variable frequency control output voltage gain expression, the first switching frequency under the variable frequency control with the minimum input voltage and maximum output power is calculated, and based on the first conduction angle and the first switching frequency, a hybrid control curve is set.

[0113] Specifically, when the LCC resonant converter realizes soft switching under the improved dual-carrier hybrid control, the switching frequency and conduction angle The relationship curve of the soft switch should be above the critical soft switch relationship curve. In order to achieve full range soft switching, the hybrid control curve should be above all critical soft switch relationship curves and leave a 5%~10% margin. At the same time, in order to meet the voltage regulation conditions, when The corresponding switching frequency should not be greater than the minimum input voltage , maximum output power In order to shorten the switching frequency range under variable frequency control, the switching frequency Minimum input voltage , maximum output power The switching frequency under variable frequency control can be calculated by the variable frequency control output voltage gain expression, and a hybrid control curve is drawn through this point.

[0114] In one embodiment, the expression of the hybrid control curve is as follows:

[0115] ;

[0116] Where, is the slope of the first curve, is the first intercept.

[0117] In one embodiment, a first carrier slope and a second carrier slope in dual-carrier modulation are calculated based on the first relationship curve and the hybrid control curve.

[0118] Specifically, based on the first relationship curve and the hybrid control curve, the first curve slope and the first intercept of the hybrid control curve are obtained, and the second curve slope and the second intercept of the first relationship curve are obtained; according to the first intercept and the second intercept, the second carrier slope in the dual-carrier modulation is calculated; according to the first curve slope, the second curve slope and the second carrier slope, the first carrier slope in the dual-carrier modulation is calculated.

[0119] Specifically, is the slope of the first curve, is the first intercept, is the slope of the second curve, is the second intercept.

[0120] Specifically, the first carrier slope and the second carrier slope are as follows:

[0121] ;

[0122] Where, is the first carrier slope, is the second carrier slope, is the first peak, is the first intercept, is the slope of the first curve.

[0123] In one embodiment, the first curve slope of the hybrid control curve is obtained, and based on the first curve slope, the total regulation voltage, the first carrier slope and the second carrier slope, the carrier peak modulation signal and the conduction angle modulation signal are calculated and obtained.

[0124] Specifically, the first peak value of the second carrier in the dual-carrier modulation is obtained, and the first peak value, the first curve slope, the total adjustment voltage, the first carrier slope and the second carrier slope are substituted into the carrier peak modulation signal calculation formula to obtain the carrier peak modulation signal.

[0125] Specifically, the carrier peak modulation signal calculation formula is as follows:

[0126] ;

[0127] Where, is the carrier peak modulation signal, is the total regulated voltage, is the first peak, is the slope of the first curve, is the first carrier slope, is the second carrier slope.

[0128] Specifically, the first peak value, the total regulated voltage, the first carrier slope, and the second carrier slope are substituted into a conduction angle modulation signal calculation formula to obtain a conduction angle modulation signal.

[0129] Specifically, the calculation formula of the conduction angle modulation signal is as follows:

[0130] ;

[0131] Where, is the conduction angle modulation signal.

[0132] In one embodiment, the dual carrier is improved, and the improved dual carrier waveform is as follows: Figure 4 As shown, Figure 4 This is a schematic diagram of the improved dual-carrier waveform. The improvement is based on the fact that the on and off times of all primary switches remain unchanged before and after the carrier changes, that is, the switching frequency of the converter before and after is simplified. and conduction angle The two original carriers are replaced by a carrier vsaw with a slope fixed to k, where: It is the carrier peak modulation signal, which is the peak value of a single carrier and controls the switching frequency. Its function is similar to variable frequency control. The conduction angle modulation signal of the first module is a single-carrier phase-shift control variable that controls the conduction angle, and its function is similar to phase-shift control.

[0133] Step 103: Collect the first output voltage of the LCC resonant converter of the first module, and collect the second output voltage of the LCC resonant converter of the second module at the same time. After determining to compare the first output voltage and the second output voltage with the first reference voltage and obtaining the first error value and the second error value respectively, perform PI adjustment on the first error value and the second error value to obtain the first adjustment amount and the second adjustment amount.

[0134] In one embodiment, the output of the first module LCC resonant converter is connected to a voltage measuring device, and the first output voltage of the first module LCC resonant converter is collected based on the voltage measuring device.

[0135] In one embodiment, the output of the second module LCC resonant converter is connected to a voltage measuring device, and the second output voltage of the second module LCC resonant converter is collected based on the voltage measuring device.

[0136] In one embodiment, when PI adjustment is performed on the first error value, PI adjustment is performed on the first error amount through a PI control algorithm, wherein the PI control algorithm is composed of proportional control and integral control, the proportional control adjusts the output first adjustment amount according to the size of the first error amount, and the integral control adjusts the first adjustment amount according to the duration of obtaining the first error amount.

[0137] In one embodiment, when PI adjustment is performed on the second error value, PI adjustment is performed on the second error amount through a PI control algorithm, wherein the PI control algorithm is composed of proportional control and integral control, the proportional control adjusts the output second adjustment amount according to the size of the second error amount, and the integral control adjusts the second adjustment amount according to the duration of obtaining the second error amount.

[0138] Step 104: Superimpose the first adjustment value and the second adjustment value on the conduction angle modulation signal respectively to obtain a first module conduction angle modulation signal and a second module conduction angle modulation signal.

[0139] In one embodiment, the first adjustment value is superimposed on the conduction angle modulation signal to obtain the first module conduction angle modulation signal of the first module LCC resonant converter.

[0140] In one embodiment, the second adjustment value is superimposed on the conduction angle modulation signal to obtain a second module conduction angle modulation signal of the second module LCC resonant converter.

[0141] Step 105: Perform dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal.

[0142] In one embodiment, the carrier peak modulation signal is input into an outer control loop, so that the carrier peak modulation signal is input into a first modulation signal calculation formula in the outer control loop to obtain and output a first modulation signal.

[0143] In one embodiment, the carrier peak modulation signal and the first module conduction angle modulation signal are input into an inner loop control loop, so that in the inner loop control loop, based on the first modulation signal, a second modulation signal calculation formula is selected, and the first module conduction angle modulation signal and the carrier peak modulation signal are input into the second modulation signal calculation formula to obtain and output the second modulation signal.

[0144] In one embodiment, the calculation formula of the first modulation signal is as follows:

[0145] ;

[0146] Where, is the first modulation signal, is the carrier peak modulation signal.

[0147] In one embodiment, the calculation formula of the second modulated signal is as follows:

[0148] ;

[0149] Where, is the second modulation signal, It is the conduction angle modulation signal of the first module.

[0150] Step 106: Input the first modulation signal, the second modulation signal, the carrier peak modulation signal and the second module conduction angle modulation signal into a driving circuit to obtain driving signals for the first switching tube and the second switching tube.

[0151] In summary, the present embodiment provides a driving signal generation method for a sensor testing device, which obtains a carrier peak modulation signal and a conduction angle modulation signal under reference parameters by improving the dual-carrier hybrid control, and then obtains the adjustment amount corresponding to the LCC resonant converter of each module and adjusts the conduction angle modulation signal of the LCC resonant converter of each module. This can achieve voltage balancing between different modules, and after obtaining the carrier peak modulation signal under the reference parameters, there is no need to adjust the carrier peak modulation signal, which can make the switching frequencies of the LCC resonant converters of each module the same, thereby reducing the output voltage ripple and reducing the volume of the filter capacitor.

[0152] Example 2, see Figure 2 , Figure 2 FIG. 1 is a structural diagram of an embodiment of a driving signal generating device for a sensor testing device provided by the present invention. Figure 2 As shown, the device includes a total output voltage regulation module 201, a hybrid control module 202, a resonant converter voltage regulation module 203, a conduction angle modulation module 204, a dual-loop control module 205 and a drive signal acquisition module 206, which are specifically as follows:

[0153] The total output voltage regulation module 201 is used to collect the total output voltage of the sensor test device, compare the total output voltage with the total reference voltage to obtain a total error, and perform PI regulation on the total error to obtain a total regulated voltage.

[0154] The hybrid control module 202 is configured to perform an improved dual-carrier hybrid control process on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal.

[0155] The resonant converter voltage regulation module 203 is used to collect the first output voltage of the LCC resonant converter of the first module and the second output voltage of the LCC resonant converter of the second module. After determining that the first output voltage and the second output voltage are compared with the first reference voltage and the first error value and the second error value are obtained respectively, PI adjustment is performed on the first error value and the second error value to obtain a first adjustment amount and a second adjustment amount.

[0156] The conduction angle modulation module 204 is configured to superimpose the first adjustment value and the second adjustment value on the conduction angle modulation signal to obtain a first module conduction angle modulation signal and a second module conduction angle modulation signal.

[0157] The dual-loop control module 205 is configured to perform dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal.

[0158] The driving signal acquisition module 206 is used to input the first modulation signal, the second modulation signal, the carrier peak modulation signal and the second module conduction angle modulation signal into the driving circuit to obtain the driving signals of the first switching tube and the second switching tube.

[0159] In one embodiment, the dual-loop control module 205 is used to perform dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal, specifically including: inputting the carrier peak modulation signal into the outer loop control loop, so that the carrier peak modulation signal is input into the first modulation signal calculation formula in the outer loop control loop to obtain and output the first modulation signal; inputting the carrier peak modulation signal and the first module conduction angle modulation signal into the inner loop control loop, so that in the inner loop control loop, based on the first modulation signal, the second modulation signal calculation formula is selected, and the first module conduction angle modulation signal and the carrier peak modulation signal are input into the second modulation signal calculation formula to obtain and output the second modulation signal.

[0160] In one embodiment, the calculation formula of the first modulation signal is as follows:

[0161] ;

[0162] Where, is the first modulation signal, is the carrier peak modulation signal.

[0163] In one embodiment, the calculation formula of the second modulated signal is as follows:

[0164] ;

[0165] Where, is the second modulation signal, It is the conduction angle modulation signal of the first module.

[0166] In one embodiment, the hybrid control module 202 is used to perform an improved dual-carrier hybrid control calculation on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal, specifically including: obtaining a switching frequency expression and a conduction angle expression in the dual-carrier modulation, and obtaining a first relationship curve between the switching frequency and the conduction angle based on the switching frequency expression and the conduction angle expression; selecting a first conduction angle of a preset angle, and calculating the first switching frequency under the variable frequency control of the minimum input voltage and the maximum output power based on the variable frequency control output voltage gain expression, and setting a hybrid control curve based on the first conduction angle and the first switching frequency; calculating the first carrier slope and the second carrier slope in the dual-carrier modulation based on the first relationship curve and the hybrid control curve; obtaining the first curve slope of the hybrid control curve, and calculating and obtaining the carrier peak modulation signal and the conduction angle modulation signal based on the first curve slope, the total regulated voltage, the first carrier slope, and the second carrier slope.

[0167] In one embodiment, the hybrid control module 202 is configured to calculate and obtain a carrier peak modulation signal and a conduction angle modulation signal based on the first curve slope, the total regulated voltage, the first carrier slope, and the second carrier slope, specifically including: obtaining a first peak value of the second carrier in dual-carrier modulation, substituting the first peak value, the first curve slope, the total regulated voltage, the first carrier slope, and the second carrier slope into a carrier peak modulation signal calculation formula to obtain a carrier peak modulation signal; substituting the first peak value, the total regulated voltage, the first carrier slope, and the second carrier slope into a conduction angle modulation signal calculation formula to obtain a conduction angle modulation signal;

[0168] In one embodiment, the carrier peak modulation signal calculation formula is as follows:

[0169] ;

[0170] Where, is the carrier peak modulation signal, is the total regulated voltage, is the first peak, is the slope of the first curve, is the first carrier slope, is the second carrier slope.

[0171] In one embodiment, the calculation formula of the conduction angle modulation signal is as follows:

[0172] ;

[0173] Where, is the conduction angle modulation signal.

[0174] In one embodiment, the hybrid control module 202 is used to calculate the first carrier slope and the second carrier slope in the dual-carrier modulation based on the first relationship curve and the hybrid control curve, specifically including: obtaining the first curve slope and the first intercept of the hybrid control curve based on the first relationship curve and the hybrid control curve, and obtaining the second curve slope and the second intercept of the first relationship curve; calculating the second carrier slope in the dual-carrier modulation according to the first intercept and the second intercept; calculating the first carrier slope in the dual-carrier modulation according to the first curve slope, the second curve slope and the second carrier slope.

[0175] In one embodiment, the first carrier slope and the second carrier slope are as follows:

[0176] ;

[0177] Where, is the first carrier slope, is the second carrier slope, is the first peak, is the first intercept, is the slope of the first curve.

[0178] See also Figure 3 , Figure 3 FIG. 1 is a schematic structural diagram of an embodiment of a drive signal generating system for a sensor test device provided by the present invention. Figure 3 As shown, the system structure includes: a sensor testing device 30, and the driving signal generating device 20 of the sensor testing device mentioned above.

[0179] In one embodiment, the sensor testing device 30 is connected to the driving signal generating device 20 of the sensor testing device.

[0180] In one embodiment, the sensor testing device 30 includes a first LCC resonant converter module and a second LCC resonant converter module, wherein the first LCC resonant converter module includes a first switching transistor, and the second LCC resonant converter module includes a second switching transistor.

[0181] In one embodiment, the sensor testing device further includes a load .

[0182] In one embodiment, the first module LCC resonant converter includes a first switch tube, wherein the first switch tube includes a first primary side switch tube , the second primary side switch tube , the third primary side switch tube and the fourth primary switch tube The first module LCC resonant converter also includes a first series resonant capacitor , the first parallel resonant capacitor , the first resonant inductor , the first secondary rectifier diode , the second secondary rectifier diode , the third secondary rectifier diode , the fourth secondary rectifier diode , the first filter capacitor .

[0183] In one embodiment, the second module LCC resonant converter includes a second switch tube, wherein the second switch tube includes a fifth primary switch tube , the sixth primary switch tube , the seventh primary side switch tube and the eighth primary switch tube The second module LCC resonant converter also includes a second series resonant capacitor , the second parallel resonant capacitor , the second resonant inductor , the fifth secondary rectifier diode , the sixth secondary rectifier diode , the seventh secondary rectifier diode 、The eighth secondary rectifier diode , the second filter capacitor .

[0184] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working process of the device described above can refer to the corresponding process in the aforementioned method embodiment and will not be repeated here.

[0185] It should be noted that the above-described embodiment of the drive signal generating device for the sensor testing device is merely illustrative. The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of these modules may be selected to achieve the objectives of this embodiment as needed.

[0186] Based on the above-mentioned embodiment of the driving signal generating method of the sensor testing device, another embodiment of the present invention provides a driving signal generating terminal device of the sensor testing device, and the driving signal generating terminal device of the sensor testing device includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the driving signal generating method of the sensor testing device of any embodiment of the present invention is implemented.

[0187] For example, in this embodiment, the computer program may be divided into one or more modules, which are stored in the memory and executed by the processor to implement the present invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the drive signal generating terminal device of the sensor testing device.

[0188] The terminal device for generating the driving signal of the sensor test device may be a computing device such as a desktop computer, a notebook computer, a palmtop computer, a cloud server, etc. The terminal device for generating the driving signal of the sensor test device may include, but is not limited to, a processor and a memory.

[0189] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the drive signal generation terminal device of the sensor test device, and utilizes various interfaces and lines to connect various parts of the drive signal generation terminal device of the entire sensor test device.

[0190] The memory can be used to store the computer programs and / or modules. The processor implements the various functions of the drive signal generating terminal device of the sensor testing device by running or executing the computer programs and / or modules stored in the memory and calling the data stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store an operating system, at least one application required for a function, etc.; the data storage area may store data generated based on the use of the mobile phone, etc. In addition, the memory may include high-speed random access memory and non-volatile memory, such as a hard disk, internal memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0191] Based on the above-mentioned embodiment of the driving signal generating method for the sensor testing device, another embodiment of the present invention provides a storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the storage medium is located is controlled to execute the driving signal generating method for the sensor testing device of any embodiment of the present invention.

[0192] In this embodiment, the storage medium is a computer-readable storage medium, and the computer program includes computer program code, which may be in source code form, object code form, an executable file, or some intermediate form. The computer-readable medium may include any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium.

[0193] In summary, the present invention provides a method, device and system for generating a driving signal for a sensor test device, which obtains a carrier peak modulation signal and a conduction angle modulation signal by performing improved dual-carrier hybrid control on the total regulation voltage of the sensor test device; obtains a first regulation amount and a second regulation amount based on the first output voltage of the first module LCC resonant converter and the second output voltage of the second module LCC resonant converter; obtains a first module conduction angle modulation signal and a second module conduction angle modulation signal by superimposing the first regulation amount and the second regulation amount on the conduction angle modulation signal respectively; performs dual-loop control processing on the carrier peak modulation signal and the conduction angle modulation signal of the first module, obtains a first modulation signal and a second modulation signal; and converts the first Modulation signal, second modulation signal, carrier peak modulation signal and second module conduction angle are used to obtain driving signals for all switching tubes. Compared with the prior art, the technical solution of the present invention obtains the carrier peak modulation signal and conduction angle modulation signal under the reference parameters by improving the dual-carrier hybrid control, and then obtains the adjustment amount corresponding to the LCC resonant converter of each module and adjusts the conduction angle modulation signal of the LCC resonant converter of each module. It can achieve voltage balancing between different modules, and after obtaining the carrier peak modulation signal under the reference parameters, there is no need to adjust the carrier peak modulation signal, which can make the switching frequencies of the LCC resonant converters of each module the same, thereby reducing the output voltage ripple and reducing the volume of the filter capacitor.

[0194] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for generating a driving signal for a sensor test device, characterized in that: The sensor testing device includes a first module LCC resonant converter and a second module LCC resonant converter, wherein the first module LCC resonant converter includes a first switching tube, and the second module LCC resonant converter includes a second switching tube. The drive signal generating method includes: Collecting a total output voltage of the sensor test device, comparing the total output voltage with a total reference voltage to obtain a total error, and performing PI regulation on the total error to obtain a total regulated voltage; Performing an improved dual-carrier hybrid control process on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal; collecting a first output voltage of the LCC resonant converter of the first module and a second output voltage of the LCC resonant converter of the second module at the same time, and after determining to compare the first output voltage and the second output voltage with a first reference voltage to obtain a first error value and a second error value respectively, performing PI adjustment on the first error value and the second error value to obtain a first adjustment amount and a second adjustment amount; Superimposing the first adjustment value and the second adjustment value on the conduction angle modulation signal respectively to obtain a first module conduction angle modulation signal and a second module conduction angle modulation signal; Performing dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal; Inputting the first modulation signal, the second modulation signal, the carrier peak modulation signal and the second module conduction angle modulation signal into a driving circuit to obtain driving signals for the first switching tube and the second switching tube; The improved dual-carrier hybrid control calculation is performed on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal, specifically including: Obtaining a switching frequency expression and a conduction angle expression in dual-carrier modulation, and obtaining a first relationship curve between the switching frequency and the conduction angle based on the switching frequency expression and the conduction angle expression; Selecting a first conduction angle of a preset angle, calculating a first switching frequency under variable frequency control with minimum input voltage and maximum output power based on a variable frequency control output voltage gain expression, and setting a hybrid control curve based on the first conduction angle and the first switching frequency; Calculating a first carrier slope and a second carrier slope in dual-carrier modulation based on the first relationship curve and the hybrid control curve; Obtaining a first curve slope of the hybrid control curve, obtaining a first peak value of the second carrier in dual-carrier modulation, substituting the first peak value, the first curve slope, the total adjustment voltage, the first carrier slope, and the second carrier slope into a carrier peak modulation signal calculation formula to obtain a carrier peak modulation signal; Substituting the first peak value, the total regulated voltage, the first carrier slope, and the second carrier slope into a conduction angle modulation signal calculation formula to obtain a conduction angle modulation signal; The carrier peak modulation signal calculation formula is as follows: Where V m is the carrier peak modulation signal, V e is the total regulated voltage, V c is the first peak value, k is the slope of the first curve, k1 is the slope of the first carrier, and k2 is the slope of the second carrier; The calculation formula of the conduction angle modulation signal is as follows: Where V n is the conduction angle modulation signal.

2. The method for generating a driving signal for a sensor testing device according to claim 1, wherein: The method further comprises: performing dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal. Inputting the carrier peak modulation signal into an outer loop control loop, so that the carrier peak modulation signal is input into a first modulation signal calculation formula in the outer loop control loop to obtain and output a first modulation signal; Inputting the carrier peak modulation signal and the first module conduction angle modulation signal into an inner loop control loop, so that in the inner loop control loop, based on the first modulation signal, a second modulation signal calculation formula is selected, and the first module conduction angle modulation signal and the carrier peak modulation signal are input into the second modulation signal calculation formula to obtain and output a second modulation signal; The calculation formula of the first modulation signal is as follows: Where V t is the first modulation signal, V m is the carrier peak modulation signal; The calculation formula of the second modulation signal is as follows: Where V e3 is the second modulation signal, V e1 It is the conduction angle modulation signal of the first module.

3. The method for generating a driving signal for a sensor testing device according to claim 1, wherein: Calculating a first carrier slope and a second carrier slope in dual-carrier modulation based on the first relationship curve and the hybrid control curve specifically includes: Based on the first relationship curve and the hybrid control curve, obtaining a first curve slope and a first intercept of the hybrid control curve, and obtaining a second curve slope and a second intercept of the first relationship curve; Calculating a second carrier slope in dual-carrier modulation according to the first intercept and the second intercept; The first carrier slope in dual-carrier modulation is calculated according to the first curve slope, the second curve slope and the second carrier slope.

4. The method for generating a driving signal for a sensor testing device according to claim 3, wherein: The first carrier slope and the second carrier slope are as follows: Where k1 is the first carrier slope, k2 is the second carrier slope, V c is the first peak, B is the first intercept, and k is the first curve slope.

5. A driving signal generating device for a sensor testing device, characterized in that: The sensor testing device includes a first module LCC resonant converter and a second module LCC resonant converter, wherein the first module LCC resonant converter includes a first switch tube, and the second module LCC resonant converter includes a second switch tube, including: a total output voltage regulation module, a hybrid control module, a resonant converter voltage regulation module, a conduction angle modulation module, a dual-loop control module and a drive signal acquisition module; The total output voltage adjustment module is configured to collect the total output voltage of the sensor test device, compare the total output voltage with the total reference voltage to obtain a total error, and perform PI adjustment on the total error to obtain a total regulated voltage. The hybrid control module is used to perform improved dual-carrier hybrid control processing on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal; The resonant converter voltage regulation module is configured to collect a first output voltage of the LCC resonant converter of the first module and a second output voltage of the LCC resonant converter of the second module, and after determining that the first output voltage and the second output voltage are compared with a first reference voltage and a first error value and a second error value are obtained respectively, perform PI regulation on the first error value and the second error value to obtain a first adjustment amount and a second adjustment amount; The conduction angle modulation module is configured to perform superposition processing on the first adjustment amount and the second adjustment amount and the conduction angle modulation signal respectively to obtain a first module conduction angle modulation signal and a second module conduction angle modulation signal; The dual-loop control module is used to perform dual-loop control processing on the carrier peak modulation signal and the first module conduction angle modulation signal to obtain a first modulation signal and a second modulation signal; The driving signal acquisition module is configured to input the first modulation signal, the second modulation signal, the carrier peak modulation signal, and the second module conduction angle modulation signal into the driving circuit to obtain driving signals for the first switching tube and the second switching tube; The improved dual-carrier hybrid control calculation is performed on the total regulated voltage to obtain a carrier peak modulation signal and a conduction angle modulation signal, specifically including: Obtaining a switching frequency expression and a conduction angle expression in dual-carrier modulation, and obtaining a first relationship curve between the switching frequency and the conduction angle based on the switching frequency expression and the conduction angle expression; Selecting a first conduction angle of a preset angle, calculating a first switching frequency under variable frequency control with minimum input voltage and maximum output power based on a variable frequency control output voltage gain expression, and setting a hybrid control curve based on the first conduction angle and the first switching frequency; Calculating a first carrier slope and a second carrier slope in dual-carrier modulation based on the first relationship curve and the hybrid control curve; Obtaining a first curve slope of the hybrid control curve, obtaining a first peak value of the second carrier in dual-carrier modulation, substituting the first peak value, the first curve slope, the total adjustment voltage, the first carrier slope, and the second carrier slope into a carrier peak modulation signal calculation formula to obtain a carrier peak modulation signal; Substituting the first peak value, the total regulated voltage, the first carrier slope, and the second carrier slope into a conduction angle modulation signal calculation formula to obtain a conduction angle modulation signal; The carrier peak modulation signal calculation formula is as follows: Where V m is the carrier peak modulation signal, V e is the total regulated voltage, V c is the first peak value, k is the slope of the first curve, k1 is the slope of the first carrier, and k2 is the slope of the second carrier; The calculation formula of the conduction angle modulation signal is as follows: Where V n is the conduction angle modulation signal.

6. A driving signal generating system for a sensor testing device, characterized in that: include: A sensor testing device, and a driving signal generating device for the sensor testing device according to claim 5; The sensor testing device is connected to a driving signal generating device of the sensor testing device; The sensor testing device includes a first module LCC resonant converter and a second module LCC resonant converter, wherein the first module LCC resonant converter includes a first switching tube, and the second module LCC resonant converter includes a second switching tube.

7. A terminal device, characterized in that: The device comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the method for generating a driving signal for the sensor testing device according to any one of claims 1 to 4 is implemented.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the driving signal generating method for the sensor testing device according to any one of claims 1 to 4.

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