A method, system and storage medium for adaptive regulation of a DCDC converter

Abstract

The present invention provides an adaptive regulation method, system and storage medium of a DCDC converter. Firstly, the output voltage is corrected by taking the first current information and the first temperature information as interference coefficients to obtain the voltage closed-loop regulation compensation information; secondly, the voltage closed-loop regulation parameter information is determined according to the voltage closed-loop regulation compensation information to obtain the voltage closed-loop output information, and the current closed-loop regulation compensation information is calculated in combination with the second current information; then, the current closed-loop regulation parameter information is determined according to the current closed-loop regulation compensation information to obtain the current closed-loop output information; finally, the voltage output compensation information is determined according to the first voltage information and the second voltage information, and the voltage output regulation amount is calculated in combination with the current closed-loop output information to adjust the output voltage value; the effects of improving the control output accuracy, the dynamic response speed and reducing the ripple of the output voltage are achieved.

Description

Technical Field

[0001] The present invention relates to the field of DCDC converters, and more specifically, to an adaptive regulation method, system and storage medium of a DCDC converter. Background Art

[0002] A DC-to-DC converter, also known as a DCDC converter, is a device that converts a DC power supply into a DC power supply of different voltages. In the continuous conduction mode, the DCDC synchronous rectification buck circuit usually adopts a voltage open-loop control method. However, the dynamic response speed of the traditional PI controller voltage closed-loop or voltage and current dual-loop control system is limited by the PI parameters. If the proportional parameter P is large, the overshoot amplitude is large, and if the proportional parameter P is small, the response is slow. If the integral parameter I is too large or too small, it will affect the stability of the system, and overshoot or drop will occur when the load changes. At the same time, this control method cannot solve the problem of insufficient output accuracy caused by load and temperature changes. At the same time, the output voltage has a line impedance between the sampling point position and the actual output port position, resulting in a deviation between the actual output voltage and the sampled value, affecting the output accuracy.

[0003] Therefore, there is an urgent need for an adaptive regulation technology for a DCDC converter that can improve dynamic response speed, increase output accuracy and reduce output ripple. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide an adaptive regulation method, system and storage medium of a DCDC converter, set load and temperature interference coefficients to correct the actual port output voltage value, thereby improving the control output accuracy; set a control parameter adaptive adjustment strategy for a voltage closed-loop controller and a current closed-loop controller to improve the dynamic response speed; over-adjust the output according to the fluctuation of the input voltage value, thereby reducing the ripple of the output voltage.

[0005] A first aspect of the present invention provides an adaptive regulation method for a DCDC converter, the method comprising:

[0006] Acquiring first current information and first temperature information;

[0007] Obtaining voltage closed-loop regulation compensation information according to the first current information and the first temperature information;

[0008] Determine voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information, and obtain voltage closed-loop output information;

[0009] Acquiring second current information;

[0010] Obtaining current closed-loop regulation compensation information according to the second current information and the voltage closed-loop output information;

[0011] Determine current closed-loop regulation parameter information according to the current closed-loop regulation compensation information, and obtain current closed-loop output information;

[0012] Acquire first voltage information and second voltage information;

[0013] Obtaining output compensation information according to the first voltage information and the second voltage information;

[0014] The sum of the current closed-loop output information and the output compensation information is calculated to obtain a voltage output adjustment amount for adjusting the output voltage value.

[0015] In this solution, the voltage closed-loop regulation compensation information is obtained according to the first current information and the first temperature information, specifically:

[0016] Determining a current compensation coefficient according to the first current information and a preset current compensation coefficient relationship formula;

[0017] Obtaining first output voltage compensation information according to the first current information and the current compensation coefficient;

[0018] Determining a temperature compensation coefficient according to the first temperature information and a preset temperature coefficient correspondence table;

[0019] Obtaining second output voltage compensation information according to the first temperature information and the temperature compensation coefficient;

[0020] Acquiring third voltage information and fourth voltage information;

[0021] Calculating the sum of the third voltage information, the first output voltage compensation information, and the second output voltage compensation information to obtain fifth voltage information;

[0022] The difference calculated by subtracting the fifth voltage information from the fourth voltage information is the voltage closed-loop regulation compensation information.

[0023] In this solution, the current closed-loop regulation compensation information is obtained according to the second current information and the voltage closed-loop output information, specifically:

[0024] Determining whether the voltage closed-loop output information exceeds a preset first current threshold;

[0025] If yes, setting third current information according to the first current threshold;

[0026] If not, obtaining third current information according to the voltage closed-loop output information and a preset reference current calculation relationship;

[0027] The difference calculated by subtracting the second current information from the third current information is the current closed-loop regulation compensation information.

[0028] In this solution, the voltage closed-loop regulation parameter information is determined according to the voltage closed-loop regulation compensation information to obtain the voltage closed-loop output information, specifically:

[0029] Determining whether the voltage closed-loop regulation compensation information is within a preset first voltage range;

[0030] If yes, the first adjustment coefficient information is set to the first coefficient value;

[0031] If not, the first adjustment coefficient information is set to the second coefficient value;

[0032] Determine a voltage closed-loop adjustment parameter correspondence table according to the fifth voltage information;

[0033] Searching the voltage closed-loop adjustment parameter corresponding table according to the first adjustment coefficient information to determine the voltage closed-loop adjustment parameter information;

[0034] The voltage closed-loop output information is calculated based on the voltage closed-loop regulation compensation information and the voltage closed-loop regulation parameter information.

[0035] In this solution, the current closed-loop regulation parameter information is determined according to the current closed-loop regulation compensation information to obtain the current closed-loop output information, specifically:

[0036] Obtaining second adjustment coefficient information according to the current closed-loop adjustment compensation information and a preset current adjustment coefficient relationship formula;

[0037] Determine a current closed-loop regulation parameter correspondence table according to the second current information;

[0038] Searching the current closed-loop adjustment parameter corresponding table according to the second adjustment coefficient information to determine the current closed-loop adjustment parameter information;

[0039] The current closed-loop output information is calculated based on the current closed-loop regulation compensation information and the current closed-loop regulation parameter information.

[0040] In this solution, the output compensation information is obtained according to the first voltage information and the second voltage information, specifically:

[0041] Calculating a difference between the first voltage information and the second voltage information to obtain voltage difference information;

[0042] Determining whether the voltage difference information is less than a preset voltage difference threshold;

[0043] If yes, the voltage compensation coefficient is set to a third coefficient value;

[0044] If not, obtaining fourth voltage information, and determining a voltage compensation coefficient according to a ratio of the fourth voltage information to the first voltage information;

[0045] The product of the voltage difference information and the voltage compensation coefficient is calculated to obtain the output compensation information.

[0046] A second aspect of the present invention provides an adaptive regulation system for a DCDC converter, including an adaptive regulation method program for a DCDC converter, wherein the adaptive regulation method program for the DCDC converter implements the following steps when executed by the processor:

[0047] Acquiring first current information and first temperature information;

[0048] Obtaining voltage closed-loop regulation compensation information according to the first current information and the first temperature information;

[0049] Determine voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information, and obtain voltage closed-loop output information;

[0050] Acquiring second current information;

[0051] Obtaining current closed-loop regulation compensation information according to the second current information and the voltage closed-loop output information;

[0052] Determine current closed-loop regulation parameter information according to the current closed-loop regulation compensation information, and obtain current closed-loop output information;

[0053] Acquire first voltage information and second voltage information;

[0054] Obtaining output compensation information according to the first voltage information and the second voltage information;

[0055] The sum of the current closed-loop output information and the output compensation information is calculated to obtain a voltage output adjustment amount for adjusting the output voltage value.

[0056] In this solution, the voltage closed-loop regulation compensation information is obtained according to the first current information and the first temperature information, specifically:

[0057] Determining a current compensation coefficient according to the first current information and a preset current compensation coefficient relationship formula;

[0058] Obtaining first output voltage compensation information according to the first current information and the current compensation coefficient;

[0059] Determining a temperature compensation coefficient according to the first temperature information and a preset temperature coefficient correspondence table;

[0060] Obtaining second output voltage compensation information according to the first temperature information and the temperature compensation coefficient;

[0061] Acquiring third voltage information and fourth voltage information;

[0062] Calculating the sum of the third voltage information, the first output voltage compensation information, and the second output voltage compensation information to obtain fifth voltage information;

[0063] The difference calculated by subtracting the fifth voltage information from the fourth voltage information is the voltage closed-loop regulation compensation information.

[0064] In this solution, the current closed-loop regulation compensation information is obtained according to the second current information and the voltage closed-loop output information, specifically:

[0065] Determining whether the voltage closed-loop output information exceeds a preset first current threshold;

[0066] If yes, setting third current information according to the first current threshold;

[0067] If not, obtaining third current information according to the voltage closed-loop output information and a preset reference current calculation relationship;

[0068] The difference calculated by subtracting the second current information from the third current information is the current closed-loop regulation compensation information.

[0069] A third aspect of the present invention provides a computer-readable storage medium, which includes a program for an adaptive adjustment method of a DCDC converter. When the program for the adaptive adjustment method of the DCDC converter is executed by a processor, the steps of the adaptive adjustment method of the DCDC converter as described in any one of the above items are implemented.

[0070] The present invention provides an adaptive regulation method, system and storage medium of a DCDC converter. Firstly, the output voltage is corrected by taking the first current information and the first temperature information as interference coefficients to obtain the voltage closed-loop regulation compensation information; secondly, the voltage closed-loop regulation parameter information is determined according to the voltage closed-loop regulation compensation information to obtain the voltage closed-loop output information, and the current closed-loop regulation compensation information is calculated and obtained in combination with the second current information; then, the current closed-loop regulation parameter information is determined according to the current closed-loop regulation compensation information to obtain the current closed-loop output information; finally, the voltage output compensation information is determined according to the first voltage information and the second voltage information, and the voltage output regulation amount is calculated and obtained in combination with the current closed-loop output information to adjust the output voltage value; the effects of improving the control output accuracy, the dynamic response speed and reducing the ripple of the output voltage are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope.

[0072] Figure 1 A flow chart of an adaptive regulation method of a DCDC converter of the present invention is shown;

[0073] Figure 2 A schematic diagram showing an adaptive regulation process of a DCDC converter according to the present invention is shown;

[0074] Figure 3 A calculation flow chart of voltage closed-loop regulation compensation information provided by an embodiment of the present invention is shown;

[0075] Figure 4 A calculation flow chart of current closed-loop regulation compensation information provided by an embodiment of the present invention is shown;

[0076] Figure 5 A block diagram of an adaptive regulation system for a DCDC converter according to the present invention is shown. DETAILED DESCRIPTION

[0077] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0078] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present invention have the same meanings as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless the embodiments of the present invention are explicitly defined in this way.

[0079] The words "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one", "an" or "the" and similar words do not indicate a quantity limitation, but indicate the existence of at least one. Similarly, words such as "include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The steps before or after the method of the embodiment of the present invention are not necessarily carried out in order. On the contrary, various steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or a step or several steps can be removed from these processes.

[0080] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0081] Figure 1 A flow chart of an adaptive regulation method of a DCDC converter according to the present invention is shown.

[0082] like Figure 1 As shown, the present invention discloses an adaptive regulation method of a DCDC converter, the method comprising:

[0083] S102, obtaining first current information and first temperature information;

[0084] S104, obtaining voltage closed-loop regulation compensation information according to the first current information and the first temperature information;

[0085] S106, determining voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information, and obtaining voltage closed-loop output information;

[0086] S108, obtaining second current information;

[0087] S110, obtaining current closed-loop regulation compensation information according to the second current information and the voltage closed-loop output information;

[0088] S112, determining current closed-loop regulation parameter information according to the current closed-loop regulation compensation information, and obtaining current closed-loop output information;

[0089] S114, obtaining first voltage information and second voltage information;

[0090] S116, obtaining output compensation information according to the first voltage information and the second voltage information;

[0091] S118, calculating the sum of the current closed-loop output information and the output compensation information to obtain a voltage output adjustment amount for adjusting the output voltage value.

[0092] It should be noted that the first current information is the average current value of the inductor connected in series with the load in the DCDC converter within a preset period; the first temperature information is the real-time temperature value of the DCDC converter; the voltage closed-loop regulation compensation information is the control input parameter of the voltage closed-loop controller set in the DCDC converter; the voltage closed-loop regulation parameter information is the control calculation coefficient of the voltage closed-loop controller set in the DCDC converter; the voltage closed-loop output information is the output control quantity of the voltage closed-loop controller set in the DCDC converter, expressed in the form of current value; the second current information is the real-time current value of the inductor connected in series with the load in the DCDC converter; the current ... compensation information is the control input parameter of the voltage closed-loop controller set in the DCDC converter; the voltage closed-loop regulation compensation information is the control input parameter of the voltage closed-loop controller set in the DCDC converter; the voltage closed-loop regulation compensation information is the control input parameter of the voltage closed-loop controller set in the DCDC converter; the voltage closed The information is a control input parameter of a current closed-loop controller set in the DCDC converter; the current closed-loop adjustment parameter information is a control calculation coefficient of a current closed-loop controller set in the DCDC converter; the current closed-loop output information is an output control quantity of a current closed-loop controller set in the DCDC converter, expressed in the form of an overshoot value; the first voltage information is a voltage effective value of an input voltage of the DCDC converter within a preset period, recorded as a steady-state input voltage value; the second voltage information is a real-time voltage value of an input voltage of the DCDC converter within a preset period, recorded as a transient input voltage value; the output compensation information is a compensation quantity of an output voltage value of the DCDC converter, expressed in the form of an overshoot value.

[0093] like Figure 2As shown, first, the first current information Idc is the average current of the inductor, the first temperature information Temp is the temperature value, the first current information Idc and the first temperature information Temp are used as the interference coefficient of the output voltage Vout accuracy, and the actual output voltage Vo obtained by the load of the DCDC converter is obtained according to the preset output voltage correction strategy; the actual output voltage Vo and the target output voltage Vset are compared to obtain the voltage closed-loop regulation compensation information Verr. Then, the voltage closed-loop controller selects the corresponding voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information Verr, which is used to calculate the voltage closed-loop output information Iout; according to the second current information I1, which is the real-time current value of the inductor, and the voltage closed-loop output information Iout, the current closed-loop regulation compensation information Ierr is obtained according to the preset current compensation strategy. Secondly, the current closed-loop controller selects the corresponding current closed-loop regulation parameter information according to the current closed-loop regulation compensation information Ierr, which is used to calculate the current closed-loop output information Dout. Finally, the first voltage information Vref is the steady-state input voltage value, and the second voltage information Vin is the transient input voltage value. The output compensation information De is obtained according to the preset input voltage compensation strategy. According to the current closed-loop output information Dout and the output compensation information De, the output signal overshoot value D is obtained according to the preset overshoot strategy, which is used to adjust the duty cycle of the output voltage PWM control signal to achieve the effect of adjusting the output voltage.

[0094] Figure 3 The figure shows a calculation flow chart of voltage closed-loop regulation compensation information provided by an embodiment of the present invention.

[0095] According to an embodiment of the present invention, Figure 3 As shown, the voltage closed-loop regulation compensation information is obtained according to the first current information and the first temperature information, specifically:

[0096] S302, determining a current compensation coefficient according to the first current information and a preset current compensation coefficient relationship formula;

[0097] S304, obtaining first output voltage compensation information according to the first current information and the current compensation coefficient;

[0098] S306, determining a temperature compensation coefficient according to the first temperature information and a preset temperature coefficient correspondence table;

[0099] S308, obtaining second output voltage compensation information according to the first temperature information and the temperature compensation coefficient;

[0100] S310, obtaining third voltage information and fourth voltage information;

[0101] S312, calculating the sum of the third voltage information, the first output voltage compensation information, and the second output voltage compensation information to obtain fifth voltage information;

[0102] S314: Subtract the fifth voltage information from the fourth voltage information, and the calculated difference is the voltage closed-loop regulation compensation information.

[0103] It should be noted that the first output voltage compensation information is the compensation value of the load's interference with the output voltage of the DCDC converter; the second output voltage compensation information is the compensation value of the temperature's interference with the output voltage of the DCDC converter; the third voltage information is the real-time output voltage value of the DCDC converter; the fourth voltage information is the target output voltage value of the DCDC converter; the fifth voltage information is the predicted value of the voltage obtained by the load connected to the DCDC converter, which is the actual output voltage obtained by the load.

[0104] like Figure 2 As shown, the calculation method of the output voltage correction strategy and the voltage closed-loop regulation compensation information is as follows:

[0105] Vo = Vout + k1*Idc + k2*Temp;

[0106] Verr = Vset – Vo;

[0107] in:

[0108] Vo is the fifth voltage information;

[0109] Vout is the third voltage information;

[0110] Idc is the first current information;

[0111] Temp is the first temperature information;

[0112] k1 is the current compensation coefficient;

[0113] k2 is the temperature compensation coefficient;

[0114] Vset is fourth voltage information;

[0115] Verr is the voltage closed-loop regulation compensation information.

[0116] First, according to the first current information Idc and the preset current compensation coefficient relationship, the current compensation coefficient k1 is obtained. Since the connection of the load has a relatively weak effect on the DCDC output voltage, in the actual application of the present invention, when the first current information Idc is less than 1 ampere, the current compensation coefficient k1 is set to 0; otherwise, the current compensation coefficient k1 is set to 0.001; the first output voltage compensation information can be calculated. Secondly, due to the temperature characteristics of the impedance material, that is, the higher the temperature, the greater the impedance, according to the first temperature information Temp, the temperature coefficient corresponding table preset in the memory is searched to obtain the temperature compensation coefficient k2, and the second output voltage compensation information can be calculated. Then, after collecting the third voltage information Vout, that is, the real-time output voltage, according to the above relationship, the fifth voltage information Vo, that is, the actual output voltage, can be obtained. Finally, the difference between the fourth voltage information Vset and the fifth voltage information Vo, that is, the difference between the target voltage and the actual output voltage, is calculated as the voltage closed-loop regulation compensation information Verr.

[0117] Figure 4 The figure shows a calculation flow chart of current closed-loop regulation compensation information provided by an embodiment of the present invention.

[0118] According to an embodiment of the present invention, Figure 4 As shown, the current closed-loop regulation compensation information is obtained according to the second current information and the voltage closed-loop output information, specifically:

[0119] S402, determining whether the voltage closed-loop output information exceeds a preset first current threshold;

[0120] S404: If yes, set third current information according to the first current threshold;

[0121] S406, if not, obtaining third current information according to the voltage closed-loop output information and a preset reference current calculation formula;

[0122] S408, subtracting the second current information from the third current information, and calculating a difference as current closed-loop regulation compensation information.

[0123] It should be noted that the third current information is the output current prejudgment value of the voltage closed-loop controller set in the DCDC converter, which serves as the target current value of the voltage closed-loop controller. The present invention avoids output abnormality due to regulation transition by setting an upper limit for the voltage closed-loop output information. First, determine whether the voltage closed-loop output information exceeds the preset first current threshold. If so, it means that the voltage closed-loop output information is too high and there is a risk of regulation transition, then the third current information is set according to the first current threshold; if not, the third current information is obtained according to the preset reference current calculation relationship. As an implementation method, the reference current calculation relationship is usually in a geometric relationship, and the proportional coefficient is determined according to the DCDC converter. For example, when the proportional coefficient is 1, the third current information is equal to the voltage closed-loop output information. Then, the second current information is collected, and the difference between the third current information and the second current information is used as the current closed-loop regulation compensation information of the current closed-loop regulation controller.

[0124] According to an embodiment of the present invention, determining voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information to obtain voltage closed-loop output information is specifically as follows:

[0125] Determining whether the voltage closed-loop regulation compensation information is within a preset first voltage range;

[0126] If yes, the first adjustment coefficient information is set to the first coefficient value;

[0127] If not, the first adjustment coefficient information is set to the second coefficient value;

[0128] Determine a voltage closed-loop adjustment parameter correspondence table according to the fifth voltage information;

[0129] Searching the voltage closed-loop adjustment parameter corresponding table according to the first adjustment coefficient information to determine the voltage closed-loop adjustment parameter information;

[0130] The voltage closed-loop output information is calculated based on the voltage closed-loop regulation compensation information and the voltage closed-loop regulation parameter information.

[0131] It should be noted that the first adjustment coefficient information is a relationship coefficient value of the voltage closed-loop adjustment parameter, which is used to obtain the voltage closed-loop adjustment parameter by looking up a table. As an implementation method, the voltage closed-loop adjustment controller is a PI controller, and the voltage closed-loop adjustment parameter information includes a proportional adjustment parameter and an integral adjustment parameter, which satisfy the following relationship:

[0132] ;

[0133] in:

[0134] Vp is the proportional adjustment parameter of the voltage closed-loop regulation controller;

[0135] Vi is the integral adjustment parameter of the voltage closed-loop regulation controller;

[0136] k3 is the first adjustment coefficient information;

[0137] It is the regulation constant of the voltage closed-loop regulation controller, which is determined by the DCDC converter itself;

[0138] According to the voltage closed loop, adjust the compensation information size, adjust , to achieve the purpose of accelerating dynamic regulation and response. When the voltage closed-loop regulation compensation information is within the preset first voltage range, the first regulation coefficient information k3 is the first coefficient value; otherwise, the first regulation coefficient information k3 is the second coefficient value; for example, when the absolute value of the voltage closed-loop regulation compensation information is less than 1 volt, the first regulation coefficient information k3=1; when the absolute value of the voltage closed-loop regulation compensation information is greater than or equal to 1 volt, the first regulation coefficient information k3=1.5. Then, according to the fifth voltage information, that is, the actual output voltage Vo, the voltage closed-loop regulation parameter corresponding table is determined; according to the first regulation coefficient information k3, the voltage closed-loop regulation parameter corresponding table is searched to obtain the voltage closed-loop regulation parameter information, that is, the proportional regulation parameters and integral regulation parameters of the voltage closed-loop regulation controller are obtained. Finally, according to the voltage closed-loop regulation compensation information Verr and the proportional regulation parameters and integral regulation parameters of the voltage closed-loop regulation controller, the voltage closed-loop output information Iout is calculated.

[0139] According to an embodiment of the present invention, the current closed-loop regulation parameter information is determined according to the current closed-loop regulation compensation information to obtain the current closed-loop output information, specifically:

[0140] Obtaining second adjustment coefficient information according to the current closed-loop adjustment compensation information and a preset current adjustment coefficient relationship formula;

[0141] Determine a current closed-loop regulation parameter correspondence table according to the second current information;

[0142] Searching the current closed-loop adjustment parameter corresponding table according to the second adjustment coefficient information to determine the current closed-loop adjustment parameter information;

[0143] The current closed-loop output information is calculated based on the current closed-loop regulation compensation information and the current closed-loop regulation parameter information.

[0144] It should be noted that the second adjustment coefficient information is a relationship coefficient value of the current closed-loop adjustment parameter, which is used to obtain the current closed-loop adjustment parameter by looking up the table. As an implementation method, the current closed-loop adjustment controller is a PID controller, and the current closed-loop adjustment parameter information includes a proportional adjustment parameter, an integral adjustment parameter and a differential adjustment parameter, which satisfy the following relationship:

[0145] ;

[0146] in:

[0147] Ip is the proportional adjustment parameter of the current closed-loop regulation controller;

[0148] Ii is the integral adjustment parameter of the current closed-loop regulation controller;

[0149] Id is the differential adjustment parameter of the current closed-loop regulation controller;

[0150] K4 is the second adjustment coefficient information;

[0151] It is the regulation constant of the current closed-loop regulation controller, which is determined by the DCDC converter itself;

[0152] According to the current closed loop, adjust the compensation information. , to achieve the purpose of accelerating dynamic regulation and response. First, the second regulation coefficient information k4 is obtained according to the preset current regulation coefficient relationship, wherein, in the application of the present invention, the current closed-loop regulation compensation information and the second regulation coefficient information are positively correlated, that is, the larger the current closed-loop regulation compensation information, the greater the second regulation coefficient information. According to the second regulation coefficient information k4, the current closed-loop regulation parameter corresponding table preset in the memory is searched to obtain the current closed-loop regulation parameter information, that is, the proportional regulation parameter, integral regulation parameter and differential regulation parameter of the current closed-loop regulation controller are obtained. Finally, according to the current closed-loop regulation compensation information Ierr and the proportional regulation parameter, integral regulation parameter and differential regulation parameter of the voltage closed-loop regulation controller, the current closed-loop output information Dout is calculated.

[0153] According to an embodiment of the present invention, the output compensation information is obtained according to the first voltage information and the second voltage information, specifically:

[0154] Calculating a difference between the first voltage information and the second voltage information to obtain voltage difference information;

[0155] Determining whether the voltage difference information is less than a preset voltage difference threshold;

[0156] If yes, the voltage compensation coefficient is set to a third coefficient value;

[0157] If not, setting the voltage compensation coefficient to a fourth coefficient value;

[0158] Acquire fourth voltage information, and calculate a voltage ratio between the fourth voltage information and the first voltage information;

[0159] The product of the voltage difference information, the voltage compensation coefficient and the voltage ratio is calculated to obtain the output compensation information.

[0160] It should be noted that, as an implementation mode, the output compensation information in the present invention satisfies the following relationship:

[0161] De = (Vref - Vin) * [k5 * (Vset / Vref)];

[0162] in:

[0163] De is the output compensation information;

[0164] Vref is the first voltage information, that is, the steady-state input voltage value;

[0165] Vin is the second voltage information, i.e., the transient input voltage value;

[0166] k5 is the voltage compensation coefficient;

[0167] Vset is fourth voltage information, ie, target output voltage.

[0168] First, calculate the difference between the steady-state input voltage value and the transient input voltage value to obtain voltage difference information, which is used to indicate the fluctuation amplitude of the input voltage. Then, determine whether the input voltage fluctuation amplitude is lower than the preset voltage difference threshold; if so, it means that the fluctuation amplitude of the input voltage is small and has a weak impact on the output voltage. In practical applications, the voltage compensation coefficient is set to 0, that is, the third coefficient value; if not, it means that the fluctuation amplitude of the input voltage is large and will affect the output voltage. In practical applications, the voltage compensation coefficient is set to 0.05, that is, the fourth coefficient value. Then, calculate the ratio of the target output voltage Vset to the steady-state input voltage Vref, and calculate the output compensation information De according to the above-mentioned output compensation information relationship.

[0169] It is worth mentioning that it also includes:

[0170] The closed-loop controller is a PI controller or a PID controller, which is applied to a voltage closed-loop controller or a current closed-loop controller;

[0171] Obtaining a proportional regulation control amount according to the closed-loop regulation compensation information and the proportional regulation parameter;

[0172] Perform integral operation according to the closed-loop adjustment compensation information to obtain the compensation integral value;

[0173] Obtaining an integral adjustment control amount according to the compensation integral value and the integral adjustment parameter;

[0174] Perform differential operation according to the closed-loop adjustment compensation information to obtain the compensation differential value;

[0175] Obtaining a differential adjustment control amount according to the compensation differential value and the differential adjustment parameter;

[0176] Closed-loop output information is obtained according to the proportional control amount, the integral control amount or the differential control amount.

[0177] It should be noted that the closed-loop regulation compensation information is the input parameter of the closed-loop controller, which is applied to the voltage closed-loop regulation compensation information or the current closed-loop regulation compensation information; the closed-loop regulation parameter information includes the proportional regulation parameter, the integral regulation parameter or the differential regulation parameter, which is applied to the voltage closed-loop regulation parameter information or the current closed-loop regulation parameter information; the closed-loop output information is the output control quantity of the closed-loop controller, which is applied to the voltage closed-loop output information or the current closed-loop output information. The proportional regulation control quantity is linearly related to the closed-loop regulation compensation information, and is used to adjust the response speed and output amplitude of the closed-loop output; the integral control quantity is linearly related to the integral value of the closed-loop regulation compensation information, and is used to adjust the accuracy of the closed-loop output amplitude; the differential control quantity is linearly related to the differential value of the closed-loop regulation compensation information, and is used to adjust the oscillation amplitude of the closed-loop output.

[0178] It is worth mentioning that it also includes:

[0179] Determining first duty cycle information according to the voltage output adjustment amount;

[0180] Determining whether the first duty cycle information exceeds a preset duty cycle threshold;

[0181] If yes, setting the first duty cycle information as the duty cycle threshold;

[0182] Obtaining register configuration parameter information according to the first duty cycle information;

[0183] The output configuration is performed according to the register configuration parameter information to adjust the output voltage value.

[0184] It should be noted that the first duty cycle information is the duty cycle value of the pulse signal that controls the output voltage amplitude. As an embodiment, the present invention achieves the purpose of adjusting the output voltage of the DCDC converter by setting the duty cycle of the control pulse signal PWM. First, the first duty cycle information is calculated based on the output signal overshoot value D and the duty cycle of the current PWM signal. Then, it is determined whether the first duty cycle information exceeds the preset duty cycle threshold; if so, the first duty cycle information is limited according to the duty cycle threshold; for example, in actual applications, the duty cycle threshold is set to 95%, and when the first duty cycle information exceeds 95%, the first duty cycle information is set to 95%; to avoid the risk of output overshoot. Finally, according to the first duty cycle information, the register configuration parameters are calculated to set the registers of the processor, so as to achieve the effect of adjusting the output voltage value.

[0185] It is worth mentioning that it also includes:

[0186] According to a preset time period, collecting and recording second voltage information;

[0187] Performing a square operation on at least two pieces of second voltage information and then taking an average value to obtain first voltage square average value information;

[0188] The first voltage information is obtained according to the square root of the first voltage square mean information.

[0189] It should be noted that the first voltage information is a steady-state input voltage, which is the voltage effective value of the input voltage of the DCDC converter within a preset period. In the embodiment of the present invention, the second voltage information, i.e., the transient input voltage, is collected and recorded in sequence according to a preset time period; the recorded second voltage information is sequentially squared to obtain the average value, which is recorded as the first voltage square average value information; finally, the square root of the first voltage square average value information is calculated as the steady-state value of the input voltage, i.e., the first voltage information is obtained.

[0190] It is worth mentioning that it also includes:

[0191] Acquiring first temperature information;

[0192] Determining whether the first temperature information exceeds a preset temperature threshold;

[0193] If so, enter the over-temperature protection mode and set the first duty cycle information to 0.

[0194] It should be noted that an over-temperature protection mode is set in the DCDC converter. When the collected first temperature information exceeds the preset temperature threshold, it indicates that the temperature of the DCDC converter is abnormal and the output needs to be stopped to avoid damage to the DCDC converter. At this time, the first duty cycle information is set to 0 to achieve the purpose of stopping the output.

[0195] Figure 5 A block diagram of an adaptive regulation system for a DCDC converter according to the present invention is shown.

[0196] like Figure 5 As shown, the present invention discloses an adaptive regulation system 5 of a DCDC converter, comprising a memory 51 and a processor 52, wherein the memory comprises an adaptive regulation method program of the DCDC converter, and when the adaptive regulation method program of the DCDC converter is executed by the processor, the following steps are implemented:

[0197] Acquiring first current information and first temperature information;

[0198] Obtaining voltage closed-loop regulation compensation information according to the first current information and the first temperature information;

[0199] Determine voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information, and obtain voltage closed-loop output information;

[0200] Acquiring second current information;

[0201] Obtaining current closed-loop regulation compensation information according to the second current information and the voltage closed-loop output information;

[0202] Determine current closed-loop regulation parameter information according to the current closed-loop regulation compensation information, and obtain current closed-loop output information;

[0203] Acquire first voltage information and second voltage information;

[0204] Obtaining output compensation information according to the first voltage information and the second voltage information;

[0205] The sum of the current closed-loop output information and the output compensation information is calculated to obtain a voltage output adjustment amount for adjusting the output voltage value.

[0206] It should be noted that the first current information is the average current value of the inductor connected in series with the load in the DCDC converter within a preset period; the first temperature information is the real-time temperature value of the DCDC converter; the voltage closed-loop regulation compensation information is the control input parameter of the voltage closed-loop controller set in the DCDC converter; the voltage closed-loop regulation parameter information is the control calculation coefficient of the voltage closed-loop controller set in the DCDC converter; the voltage closed-loop output information is the output control quantity of the voltage closed-loop controller set in the DCDC converter, expressed in the form of current value; the second current information is the real-time current value of the inductor connected in series with the load in the DCDC converter; the current ... compensation information is the control input parameter of the voltage closed-loop controller set in the DCDC converter; the voltage closed-loop regulation compensation information is the control input parameter of the voltage closed-loop controller set in the DCDC converter; the voltage closed-loop regulation compensation information is the control input parameter of the voltage closed-loop controller set in the DCDC converter; the voltage closed The information is a control input parameter of a current closed-loop controller set in the DCDC converter; the current closed-loop adjustment parameter information is a control calculation coefficient of a current closed-loop controller set in the DCDC converter; the current closed-loop output information is an output control quantity of a current closed-loop controller set in the DCDC converter, expressed in the form of an overshoot value; the first voltage information is a voltage effective value of an input voltage of the DCDC converter within a preset period, recorded as a steady-state input voltage value; the second voltage information is a real-time voltage value of an input voltage of the DCDC converter within a preset period, recorded as a transient input voltage value; the output compensation information is a compensation quantity of an output voltage value of the DCDC converter, expressed in the form of an overshoot value.

[0207] like Figure 2 As shown, first, the first current information Idc is the average current of the inductor, the first temperature information Temp is the temperature value, the first current information Idc and the first temperature information Temp are used as the interference coefficient of the output voltage Vout accuracy, and the actual output voltage Vo obtained by the load of the DCDC converter is obtained according to the preset output voltage correction strategy; the actual output voltage Vo and the target output voltage Vset are compared to obtain the voltage closed-loop regulation compensation information Verr. Then, the voltage closed-loop controller selects the corresponding voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information Verr, which is used to calculate the voltage closed-loop output information Iout; according to the second current information I1, which is the real-time current value of the inductor, and the voltage closed-loop output information Iout, the current closed-loop regulation compensation information Ierr is obtained according to the preset current compensation strategy. Secondly, the current closed-loop controller selects the corresponding current closed-loop regulation parameter information according to the current closed-loop regulation compensation information Ierr, which is used to calculate the current closed-loop output information Dout. Finally, the first voltage information Vref is the steady-state input voltage value, and the second voltage information Vin is the transient input voltage value. The output compensation information De is obtained according to the preset input voltage compensation strategy. According to the current closed-loop output information Dout and the output compensation information De, the output signal overshoot value D is obtained according to the preset overshoot strategy, which is used to adjust the duty cycle of the output voltage PWM control signal to achieve the effect of adjusting the output voltage.

[0208] According to an embodiment of the present invention, the voltage closed-loop regulation compensation information is obtained according to the first current information and the first temperature information, specifically:

[0209] Determining a current compensation coefficient according to the first current information and a preset current compensation coefficient relationship formula;

[0210] Obtaining first output voltage compensation information according to the first current information and the current compensation coefficient;

[0211] Determining a temperature compensation coefficient according to the first temperature information and a preset temperature coefficient correspondence table;

[0212] Obtaining second output voltage compensation information according to the first temperature information and the temperature compensation coefficient;

[0213] Acquiring third voltage information and fourth voltage information;

[0214] Calculating the sum of the third voltage information, the first output voltage compensation information, and the second output voltage compensation information to obtain fifth voltage information;

[0215] The difference calculated by subtracting the fifth voltage information from the fourth voltage information is the voltage closed-loop regulation compensation information.

[0216] It should be noted that the first output voltage compensation information is the compensation value of the load's interference with the output voltage of the DCDC converter; the second output voltage compensation information is the compensation value of the temperature's interference with the output voltage of the DCDC converter; the third voltage information is the real-time output voltage value of the DCDC converter; the fourth voltage information is the target output voltage value of the DCDC converter; the fifth voltage information is the predicted value of the voltage obtained by the load connected to the DCDC converter, which is the actual output voltage obtained by the load.

[0217] like Figure 2 As shown, the calculation method of the output voltage correction strategy and the voltage closed-loop regulation compensation information is as follows:

[0218] Vo = Vout + k1*Idc + k2*Temp;

[0219] Verr = Vset – Vo;

[0220] in:

[0221] Vo is the fifth voltage information;

[0222] Vout is the third voltage information;

[0223] Idc is the first current information;

[0224] Temp is the first temperature information;

[0225] k1 is the current compensation coefficient;

[0226] k2 is the temperature compensation coefficient;

[0227] Vset is fourth voltage information;

[0228] Verr is the voltage closed-loop regulation compensation information.

[0229] First, according to the first current information Idc and the preset current compensation coefficient relationship, the current compensation coefficient k1 is obtained. Since the connection of the load has a relatively weak effect on the DCDC output voltage, in the actual application of the present invention, when the first current information Idc is less than 1 ampere, the current compensation coefficient k1 is set to 0; otherwise, the current compensation coefficient k1 is set to 0.001; the first output voltage compensation information can be calculated. Secondly, due to the temperature characteristics of the impedance material, that is, the higher the temperature, the greater the impedance, according to the first temperature information Temp, the temperature coefficient corresponding table preset in the memory is searched to obtain the temperature compensation coefficient k2, and the second output voltage compensation information can be calculated. Then, after collecting the third voltage information Vout, that is, the real-time output voltage, according to the above relationship, the fifth voltage information Vo, that is, the actual output voltage, can be obtained. Finally, the difference between the fourth voltage information Vset and the fifth voltage information Vo, that is, the difference between the target voltage and the actual output voltage, is calculated as the voltage closed-loop regulation compensation information Verr.

[0230] According to an embodiment of the present invention, the current closed-loop regulation compensation information is obtained according to the second current information and the voltage closed-loop output information, specifically:

[0231] Determining whether the voltage closed-loop output information exceeds a preset first current threshold;

[0232] If yes, setting third current information according to the first current threshold;

[0233] If not, obtaining third current information according to the voltage closed-loop output information and a preset reference current calculation relationship;

[0234] The difference calculated by subtracting the second current information from the third current information is the current closed-loop regulation compensation information.

[0235] It should be noted that the third current information is the output current prejudgment value of the voltage closed-loop controller set in the DCDC converter, which serves as the target current value of the voltage closed-loop controller. The present invention avoids output abnormality due to regulation transition by setting an upper limit for the voltage closed-loop output information. First, determine whether the voltage closed-loop output information exceeds the preset first current threshold. If so, it means that the voltage closed-loop output information is too high and there is a risk of regulation transition, then the third current information is set according to the first current threshold; if not, the third current information is obtained according to the preset reference current calculation relationship. As an implementation method, the reference current calculation relationship is usually in a geometric relationship, and the proportional coefficient is determined according to the DCDC converter. For example, when the proportional coefficient is 1, the third current information is equal to the voltage closed-loop output information. Then, the second current information is collected, and the difference between the third current information and the second current information is used as the current closed-loop regulation compensation information of the current closed-loop regulation controller.

[0236] According to an embodiment of the present invention, determining voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information to obtain voltage closed-loop output information is specifically as follows:

[0237] Determining whether the voltage closed-loop regulation compensation information is within a preset first voltage range;

[0238] If yes, the first adjustment coefficient information is set to the first coefficient value;

[0239] If not, the first adjustment coefficient information is set to the second coefficient value;

[0240] Determine a voltage closed-loop adjustment parameter correspondence table according to the fifth voltage information;

[0241] Searching the voltage closed-loop adjustment parameter corresponding table according to the first adjustment coefficient information to determine the voltage closed-loop adjustment parameter information;

[0242] The voltage closed-loop output information is calculated based on the voltage closed-loop regulation compensation information and the voltage closed-loop regulation parameter information.

[0243] It should be noted that the first adjustment coefficient information is a relationship coefficient value of the voltage closed-loop adjustment parameter, which is used to obtain the voltage closed-loop adjustment parameter by looking up a table. As an implementation method, the voltage closed-loop adjustment controller is a PI controller, and the voltage closed-loop adjustment parameter information includes a proportional adjustment parameter and an integral adjustment parameter, which satisfy the following relationship:

[0244] Vp / Vi= k3*Vp0 / Vi0;

[0245] in:

[0246] Vp is the proportional adjustment parameter of the voltage closed-loop regulation controller;

[0247] Vi is the integral adjustment parameter of the voltage closed-loop regulation controller;

[0248] k3 is the first adjustment coefficient information;

[0249] Vp0 / Vi0 is the regulation constant of the voltage closed-loop regulation controller, which is determined by the DCDC converter itself;

[0250] According to the size of the voltage closed-loop regulation compensation information, Vp / Vi is adjusted to achieve the purpose of accelerating dynamic regulation and response. When the voltage closed-loop regulation compensation information is within the preset first voltage range, the first adjustment coefficient information k3 is the first coefficient value; otherwise, the first adjustment coefficient information k3 is the second coefficient value; for example, when the absolute value of the voltage closed-loop regulation compensation information is less than 1 volt, the first adjustment coefficient information k3=1; when the absolute value of the voltage closed-loop regulation compensation information is greater than or equal to 1 volt, the first adjustment coefficient information k3=1.5. Then, according to the fifth voltage information, that is, the actual output voltage Vo, the voltage closed-loop regulation parameter corresponding table is determined; according to the first adjustment coefficient information k3, the voltage closed-loop regulation parameter corresponding table is searched to obtain the voltage closed-loop regulation parameter information, that is, the proportional adjustment parameter and the integral adjustment parameter of the voltage closed-loop regulation controller are obtained. Finally, according to the voltage closed-loop regulation compensation information Verr and the proportional adjustment parameter and the integral adjustment parameter of the voltage closed-loop regulation controller, the voltage closed-loop output information Iout is calculated.

[0251] According to an embodiment of the present invention, the current closed-loop regulation parameter information is determined according to the current closed-loop regulation compensation information to obtain the current closed-loop output information, specifically:

[0252] Obtaining second adjustment coefficient information according to the current closed-loop adjustment compensation information and a preset current adjustment coefficient relationship formula;

[0253] Determine a current closed-loop regulation parameter correspondence table according to the second current information;

[0254] Searching the current closed-loop adjustment parameter corresponding table according to the second adjustment coefficient information to determine the current closed-loop adjustment parameter information;

[0255] The current closed-loop output information is calculated based on the current closed-loop regulation compensation information and the current closed-loop regulation parameter information.

[0256] It should be noted that the second adjustment coefficient information is a relationship coefficient value of the current closed-loop adjustment parameter, which is used to obtain the current closed-loop adjustment parameter by looking up the table. As an implementation method, the current closed-loop adjustment controller is a PID controller, and the current closed-loop adjustment parameter information includes a proportional adjustment parameter, an integral adjustment parameter and a differential adjustment parameter, which satisfy the following relationship:

[0257] Ip / (Ii*Id)= k4*Ip0 / (Ii0*Id0);

[0258] in:

[0259] Ip is the proportional adjustment parameter of the current closed-loop regulation controller;

[0260] Ii is the integral adjustment parameter of the current closed-loop regulation controller;

[0261] Id is the differential adjustment parameter of the current closed-loop regulation controller;

[0262] K4 is the second adjustment coefficient information;

[0263] Ip0 / (Ii0*Id0) is the regulation constant of the current closed-loop regulation controller, which is determined by the DCDC converter itself;

[0264] According to the size of the current closed-loop regulation compensation information, Ip / (Ii*Id) is adjusted to achieve the purpose of accelerating dynamic regulation and response. First, the second regulation coefficient information k4 is obtained according to the preset current regulation coefficient relationship, wherein, in the application of the present invention, the current closed-loop regulation compensation information and the second regulation coefficient information are positively correlated, that is, the larger the current closed-loop regulation compensation information, the greater the second regulation coefficient information. According to the second regulation coefficient information k4, the current closed-loop regulation parameter corresponding table preset in the memory is searched to obtain the current closed-loop regulation parameter information, that is, the proportional regulation parameter, integral regulation parameter and differential regulation parameter of the current closed-loop regulation controller are obtained. Finally, according to the current closed-loop regulation compensation information Ierr and the proportional regulation parameter, integral regulation parameter and differential regulation parameter of the voltage closed-loop regulation controller, the current closed-loop output information Dout is calculated.

[0265] According to an embodiment of the present invention, the output compensation information is obtained according to the first voltage information and the second voltage information, specifically:

[0266] Calculating a difference between the first voltage information and the second voltage information to obtain voltage difference information;

[0267] Determining whether the voltage difference information is less than a preset voltage difference threshold;

[0268] If yes, the voltage compensation coefficient is set to a third coefficient value;

[0269] If not, setting the voltage compensation coefficient to a fourth coefficient value;

[0270] Acquire fourth voltage information, and calculate a voltage ratio between the fourth voltage information and the first voltage information;

[0271] The product of the voltage difference information, the voltage compensation coefficient and the voltage ratio is calculated to obtain the output compensation information.

[0272] It should be noted that, as an implementation mode, the output compensation information in the present invention satisfies the following relationship:

[0273] De = (Vref - Vin) * [k5 * (Vset / Vref)];

[0274] in:

[0275] De is the output compensation information;

[0276] Vref is the first voltage information, that is, the steady-state input voltage value;

[0277] Vin is the second voltage information, i.e., the transient input voltage value;

[0278] k5 is the voltage compensation coefficient;

[0279] Vset is fourth voltage information, ie, target output voltage.

[0280] First, calculate the difference between the steady-state input voltage value and the transient input voltage value to obtain voltage difference information, which is used to indicate the fluctuation amplitude of the input voltage. Then, determine whether the input voltage fluctuation amplitude is lower than the preset voltage difference threshold; if so, it means that the fluctuation amplitude of the input voltage is small and has a weak impact on the output voltage. In practical applications, the voltage compensation coefficient is set to 0, that is, the third coefficient value; if not, it means that the fluctuation amplitude of the input voltage is large and will affect the output voltage. In practical applications, the voltage compensation coefficient is set to 0.05, that is, the fourth coefficient value. Then, calculate the ratio of the target output voltage Vset to the steady-state input voltage Vref, and calculate the output compensation information De according to the above-mentioned output compensation information relationship.

[0281] It is worth mentioning that it also includes:

[0282] The closed-loop controller is a PI controller or a PID controller, which is applied to a voltage closed-loop controller or a current closed-loop controller;

[0283] Obtaining a proportional regulation control amount according to the closed-loop regulation compensation information and the proportional regulation parameter;

[0284] Perform integral operation according to the closed-loop adjustment compensation information to obtain the compensation integral value;

[0285] Obtaining an integral adjustment control amount according to the compensation integral value and the integral adjustment parameter;

[0286] Perform differential operation according to the closed-loop adjustment compensation information to obtain the compensation differential value;

[0287] Obtaining a differential adjustment control amount according to the compensation differential value and the differential adjustment parameter;

[0288] Closed-loop output information is obtained according to the proportional control amount, the integral control amount or the differential control amount.

[0289] It should be noted that the closed-loop regulation compensation information is the input parameter of the closed-loop controller, which is applied to the voltage closed-loop regulation compensation information or the current closed-loop regulation compensation information; the closed-loop regulation parameter information includes the proportional regulation parameter, the integral regulation parameter or the differential regulation parameter, which is applied to the voltage closed-loop regulation parameter information or the current closed-loop regulation parameter information; the closed-loop output information is the output control quantity of the closed-loop controller, which is applied to the voltage closed-loop output information or the current closed-loop output information. The proportional regulation control quantity is linearly related to the closed-loop regulation compensation information, and is used to adjust the response speed and output amplitude of the closed-loop output; the integral control quantity is linearly related to the integral value of the closed-loop regulation compensation information, and is used to adjust the accuracy of the closed-loop output amplitude; the differential control quantity is linearly related to the differential value of the closed-loop regulation compensation information, and is used to adjust the oscillation amplitude of the closed-loop output.

[0290] It is worth mentioning that it also includes:

[0291] Determining first duty cycle information according to the voltage output adjustment amount;

[0292] Determining whether the first duty cycle information exceeds a preset duty cycle threshold;

[0293] If yes, setting the first duty cycle information as the duty cycle threshold;

[0294] Obtaining register configuration parameter information according to the first duty cycle information;

[0295] The output configuration is performed according to the register configuration parameter information to adjust the output voltage value.

[0296] It should be noted that the first duty cycle information is the duty cycle value of the pulse signal that controls the output voltage amplitude. As an embodiment, the present invention achieves the purpose of adjusting the output voltage of the DCDC converter by setting the duty cycle of the control pulse signal PWM. First, the first duty cycle information is calculated based on the output signal overshoot value D and the duty cycle of the current PWM signal. Then, it is determined whether the first duty cycle information exceeds the preset duty cycle threshold; if so, the first duty cycle information is limited according to the duty cycle threshold; for example, in actual applications, the duty cycle threshold is set to 95%, and when the first duty cycle information exceeds 95%, the first duty cycle information is set to 95%; to avoid the risk of output overshoot. Finally, according to the first duty cycle information, the register configuration parameters are calculated to set the registers of the processor, so as to achieve the effect of adjusting the output voltage value.

[0297] It is worth mentioning that it also includes:

[0298] According to a preset time period, collecting and recording second voltage information;

[0299] Performing a square operation on at least two pieces of second voltage information and then taking an average value to obtain first voltage square average value information;

[0300] The first voltage information is obtained according to the square root of the first voltage square mean information.

[0301] It should be noted that the first voltage information is a steady-state input voltage, which is the voltage effective value of the input voltage of the DCDC converter within a preset period. In the embodiment of the present invention, the second voltage information, i.e., the transient input voltage, is collected and recorded in sequence according to a preset time period; the recorded second voltage information is sequentially squared to obtain the average value, which is recorded as the first voltage square average value information; finally, the square root of the first voltage square average value information is calculated as the steady-state value of the input voltage, i.e., the first voltage information is obtained.

[0302] It is worth mentioning that it also includes:

[0303] Acquiring first temperature information;

[0304] Determining whether the first temperature information exceeds a preset temperature threshold;

[0305] If so, enter the over-temperature protection mode and set the first duty cycle information to 0.

[0306] It should be noted that an over-temperature protection mode is set in the DCDC converter. When the collected first temperature information exceeds a preset temperature threshold, it indicates that the temperature of the DCDC converter is abnormal and the output needs to be stopped to avoid damage to the DCDC converter. At this time, the first duty cycle information is set to 0, thereby achieving the purpose of stopping the output. A third aspect of the present invention provides a computer-readable storage medium, the computer-readable storage medium includes a DCDC converter adaptive adjustment method program, and when the DCDC converter adaptive adjustment method program is executed by a processor, the steps of the DCDC converter adaptive adjustment method described in any of the above items are implemented.

[0307] The present invention provides an adaptive regulation method, system and storage medium of a DCDC converter. Firstly, the output voltage is corrected by taking the first current information and the first temperature information as interference coefficients to obtain the voltage closed-loop regulation compensation information; secondly, the voltage closed-loop regulation parameter information is determined according to the voltage closed-loop regulation compensation information to obtain the voltage closed-loop output information, and the current closed-loop regulation compensation information is calculated in combination with the second current information; then, the current closed-loop regulation parameter information is determined according to the current closed-loop regulation compensation information to obtain the current closed-loop output information; finally, the voltage output compensation information is determined according to the first voltage information and the second voltage information, and the voltage output regulation amount is calculated in combination with the current closed-loop output information to adjust the output voltage value; the effects of improving the control output accuracy, the dynamic response speed and reducing the ripple of the output voltage are achieved.

[0308] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program codes.

[0309] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adaptive regulation method for a DCDC converter, characterized in that: The method comprises: Acquiring first current information and first temperature information; Obtaining voltage closed-loop regulation compensation information according to the first current information and the first temperature information; Determine voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information, and obtain voltage closed-loop output information; acquiring second current information; Obtaining current closed-loop regulation compensation information according to the second current information and the voltage closed-loop output information; Determine current closed-loop regulation parameter information according to the current closed-loop regulation compensation information, and obtain current closed-loop output information; Acquire first voltage information and second voltage information; Obtaining output compensation information according to the first voltage information and the second voltage information; Calculating the sum of the current closed-loop output information and the output compensation information to obtain a voltage output adjustment amount for adjusting the output voltage value; The voltage closed-loop regulation compensation information is obtained according to the first current information and the first temperature information, specifically: Determining a current compensation coefficient according to the first current information and a preset current compensation coefficient relationship formula; Obtaining first output voltage compensation information according to the first current information and the current compensation coefficient; Determining a temperature compensation coefficient according to the first temperature information and a preset temperature coefficient correspondence table; Obtaining second output voltage compensation information according to the first temperature information and the temperature compensation coefficient; Acquiring third voltage information and fourth voltage information; Calculating the sum of the third voltage information, the first output voltage compensation information, and the second output voltage compensation information to obtain fifth voltage information; The difference calculated by subtracting the fifth voltage information from the fourth voltage information is the voltage closed-loop regulation compensation information; The current closed-loop regulation compensation information is obtained according to the second current information and the voltage closed-loop output information, specifically: Determining whether the voltage closed-loop output information exceeds a preset first current threshold; If yes, setting third current information according to the first current threshold; If not, obtaining third current information according to the voltage closed-loop output information and a preset reference current calculation relationship; The difference calculated by subtracting the second current information from the third current information is the current closed-loop regulation compensation information.

2. The adaptive regulation method of a DCDC converter according to claim 1, characterized in that: The voltage closed-loop adjustment parameter information is determined according to the voltage closed-loop adjustment compensation information to obtain the voltage closed-loop output information, specifically: Determining whether the voltage closed-loop regulation compensation information is within a preset first voltage range; If yes, the first adjustment coefficient information is set to the first coefficient value; If not, the first adjustment coefficient information is set to the second coefficient value; Determine a voltage closed-loop adjustment parameter correspondence table according to the fifth voltage information; Searching the voltage closed-loop adjustment parameter corresponding table according to the first adjustment coefficient information to determine the voltage closed-loop adjustment parameter information; The voltage closed-loop output information is calculated based on the voltage closed-loop regulation compensation information and the voltage closed-loop regulation parameter information.

3. The adaptive adjustment method of a DCDC converter according to claim 1, characterized in that: The current closed-loop adjustment parameter information is determined according to the current closed-loop adjustment compensation information to obtain the current closed-loop output information, specifically: Obtaining second adjustment coefficient information according to the current closed-loop adjustment compensation information and a preset current adjustment coefficient relationship formula; Determine a current closed-loop regulation parameter correspondence table according to the second current information; Searching the current closed-loop adjustment parameter corresponding table according to the second adjustment coefficient information to determine the current closed-loop adjustment parameter information; The current closed-loop output information is calculated based on the current closed-loop regulation compensation information and the current closed-loop regulation parameter information.

4. The adaptive regulation method of a DCDC converter according to claim 1, characterized in that: The obtaining of output compensation information according to the first voltage information and the second voltage information is specifically: Calculating a difference between the first voltage information and the second voltage information to obtain voltage difference information; Determining whether the voltage difference information is less than a preset voltage difference threshold; If yes, the voltage compensation coefficient is set to a third coefficient value; If not, obtaining fourth voltage information, and determining a voltage compensation coefficient according to a ratio of the fourth voltage information to the first voltage information; The product of the voltage difference information and the voltage compensation coefficient is calculated to obtain the output compensation information.

5. An adaptive regulation system for a DCDC converter, characterized in that: The system includes a memory and a processor, wherein the memory includes a DCDC converter adaptive adjustment method program, and when the DCDC converter adaptive adjustment method program is executed by the processor, the following steps are implemented: Acquiring first current information and first temperature information; Obtaining voltage closed-loop regulation compensation information according to the first current information and the first temperature information; Determine voltage closed-loop regulation parameter information according to the voltage closed-loop regulation compensation information, and obtain voltage closed-loop output information; acquiring second current information; Obtaining current closed-loop regulation compensation information according to the second current information and the voltage closed-loop output information; Determine current closed-loop regulation parameter information according to the current closed-loop regulation compensation information, and obtain current closed-loop output information; Acquire first voltage information and second voltage information; Obtaining output compensation information according to the first voltage information and the second voltage information; Calculating the sum of the current closed-loop output information and the output compensation information to obtain a voltage output adjustment amount for adjusting the output voltage value; The voltage closed-loop regulation compensation information is obtained according to the first current information and the first temperature information, specifically: Determining a current compensation coefficient according to the first current information and a preset current compensation coefficient relationship formula; Obtaining first output voltage compensation information according to the first current information and the current compensation coefficient; Determining a temperature compensation coefficient according to the first temperature information and a preset temperature coefficient correspondence table; Obtaining second output voltage compensation information according to the first temperature information and the temperature compensation coefficient; Acquiring third voltage information and fourth voltage information; Calculating the sum of the third voltage information, the first output voltage compensation information, and the second output voltage compensation information to obtain fifth voltage information; The difference calculated by subtracting the fifth voltage information from the fourth voltage information is the voltage closed-loop regulation compensation information; The current closed-loop regulation compensation information is obtained according to the second current information and the voltage closed-loop output information, specifically: Determining whether the voltage closed-loop output information exceeds a preset first current threshold; If yes, setting third current information according to the first current threshold; If not, obtaining third current information according to the voltage closed-loop output information and a preset reference current calculation relationship; The difference calculated by subtracting the second current information from the third current information is the current closed-loop regulation compensation information.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer-readable storage medium includes an adaptive adjustment method program for a DCDC converter. When the adaptive adjustment method program for a DCDC converter is executed by a processor, the steps of the adaptive adjustment method for a DCDC converter according to any one of claims 1 to 4 are implemented.

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