A control method and system for a motor drive circuit

Abstract

The present invention discloses a control method and system for a motor drive circuit, which relates to the field of motor drive technology, and includes the following steps: setting the initial parameters of the motor drive circuit, and collecting the operating parameters of the motor in real time through multiple sets of sensors; comparing the acquired operating parameters with the set initial parameters to obtain the difference between the two sets of parameters; introducing an information judgment model according to the obtained difference, and selecting whether to use a safety protection mechanism according to the result of the information judgment model; recording a work log, and providing a feedback mechanism to output to a database; wherein. The present invention detects the operating parameters of the motor in real time through multiple sets of sensors, and compares the collected operating parameters with the initial parameters, so as to timely discover the deviation value, and then through the comparison of the information judgment model, it can choose to use a safety protection mechanism, which can quickly identify and respond to potential faults or damages, reducing the risk of unexpected downtime and equipment damage.

Description

Technical Field

[0001] The present invention relates to the field of motor drive technology, and in particular to a control method and system for a motor drive circuit. Background Art

[0002] With the development of modern industrial level, the utilization of energy is becoming more and more diversified and efficient. Among them, there is an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction, which is called a motor. As a widely used driving device, the motor is usually provided with a motor driving circuit for driving, and a motor control circuit is also provided to control the motor driving circuit and the motor.

[0003] During use, if the motor malfunctions, unexpected situations may easily occur, so it is extremely important to ensure the stable operation of the motor. In actual use, generally only when a problem occurs can the malfunction be discovered by relying on the personnel's own experience, and it is impossible to intuitively determine whether it is an abnormality. Summary of the invention

[0004] The present invention is proposed in view of the problems existing in the control and system of the existing motor drive circuit.

[0005] Therefore, the problem to be solved by the present invention is that it is difficult to judge whether the motor is abnormal.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a control method for a motor drive circuit, which comprises the following steps:

[0008] Set the initial parameters of the motor drive circuit and collect the motor's operating parameters in real time through multiple sets of sensors;

[0009] Compare the obtained operating parameters with the set initial parameters to obtain the difference between the two sets of parameters;

[0010] According to the obtained difference, an information judgment model is introduced, and whether to use the security protection mechanism is selected according to the result of the information judgment model;

[0011] Record work logs and provide feedback mechanism to output to the database;

[0012] The safety protection mechanism includes an emergency operation mechanism, a problem detection mechanism and a strategy generation mechanism;

[0013] When the operating parameters and the initial parameters are compared, a separate comparison mechanism and a fusion comparison mechanism are included.

[0014] The single comparison mechanism comprises the following steps,

[0015] Set the parameter type for comparison, pre-set the corresponding safety threshold according to the parameter type, and obtain the corresponding operating parameters and initial parameters at the same time;

[0016] By calculating the deviation between the operating parameters and the initial parameters, the deviation is compared with the safety threshold;

[0017] When the deviation value is less than or equal to the safety threshold, it is normal;

[0018] When the deviation value is greater than the safety threshold, it is indicated as a risk state and a secondary judgment is performed;

[0019] Until all the set parameter types are compared;

[0020] The second judgment step is: setting the risk status to level one risk, level two risk and level three risk, and setting the multiple value of the safety threshold according to the level one risk, level two risk and level three risk, which is expressed by the formula:

[0021] ;

[0022] In the formula, , and They are respectively represented as the first-level risk, second-level risk and third-level risk judgment values ​​of type i, Represented as a safety threshold of type i, , and They are expressed as multiples of the first-level risk, second-level risk, and third-level risk, and meet the following requirements: ;

[0023] When the deviation value is greater than the judgment value And less than or equal to the judgment value When the deviation value is greater than the judgment value, the parameter type is marked as a first-level risk. And less than or equal to the judgment value When the deviation value is greater than the judgment value, the parameter type is marked as a secondary risk. And, the parameter type is marked as level 3 risk.

[0024] The fusion contrast mechanism comprises the following steps:

[0025] Pre-set the fusion parameter type and obtain the corresponding operating parameters and initial parameters;

[0026] Integrate the set parameter types and assign a weight value to each parameter type;

[0027] The comprehensive value is obtained by the calculation formula, which is expressed as:

[0028] ;

[0029] In the formula, Expressed as a comprehensive value, Represented as weight value, Expressed as deviation value;

[0030] Among them, the deviation value The calculation formula is:

[0031] ;

[0032] In the formula, Represented as a running parameter of type i, Represented as an initial parameter of type i;

[0033] The comprehensive value and the preset value are judged. When the comprehensive value is greater than the preset value, it is abnormal. When the comprehensive value is not greater than the preset value, it is normal.

[0034] As a preferred solution of the control method of the motor drive circuit of the present invention, the step of obtaining the difference between the two sets of parameters is:

[0035] Mark normal, first-level risk, second-level risk and third-level risk in the separate comparison mechanism as different scores;

[0036] Introduce the difference formula and calculate the difference. The difference formula is:

[0037] ;

[0038] In the formula, Expressed as a difference, , , and They are expressed as the scores of normal, first-level risk, second-level risk and third-level risk respectively. , , and Expressed as the weight values ​​corresponding to normal, first-level risk, second-level risk and third-level risk, It is expressed as the adjustment number of the comprehensive value. When the judgment result of the fusion comparison mechanism is abnormal, is 1, when the judgment result of the fusion comparison mechanism is normal, is 0.

[0039] As a preferred solution of the control method of the motor drive circuit of the present invention, the operation steps of the information judgment model include:

[0040] Determine the size of the difference, and when the difference is greater than the maximum value of a specific range, activate the safety protection mechanism;

[0041] When the difference is less than the minimum value of a specific range, there is no reaction;

[0042] When the difference is within a specific range, the staff will be reminded.

[0043] As a preferred solution of the control method of the motor drive circuit of the present invention, wherein: the safety protection mechanism includes:

[0044] Preset backup circuits;

[0045] When the safety protection mechanism is activated, the main circuit sends a switching request to the central control terminal, and the backup circuit sends a receiving request to the central control terminal;

[0046] The switching request and the receiving request are judged by the central control terminal;

[0047] When the two sets of requests match each other, the central control terminal performs switching of the backup circuit;

[0048] When the two sets of requests do not match, the central control terminal refuses to switch the backup circuit;

[0049] Among them, when the backup circuit is switched, the initial parameters of the active circuit are first obtained, and the parameter settings of the backup circuit are changed according to the initial parameters. The synchronization technology and transition control strategy are used for the continuity and stability of the motor operation.

[0050] As a preferred solution of the control method of the motor drive circuit of the present invention, wherein: the work log includes the time, cause, switching process and system status of the switching event;

[0051] After the work log is generated, it is transmitted to the connected display.

[0052] In a second aspect, an embodiment of the present invention provides a control system for a motor drive circuit, which includes: a collection module, an information calculation module, an information judgment module, and a database;

[0053] The acquisition module is used to collect the operating parameters of the motor and use the collected information for subsequent calculations;

[0054] The information calculation module is used to compare the operating parameters with the initial parameters and finally obtain the difference;

[0055] The information judgment module is used to judge the operation of the motor drive circuit and select whether to use the safety protection mechanism;

[0056] The database is used to store the time, cause, switching process and system status of the switching event.

[0057] In a third aspect, an embodiment of the present invention provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, wherein: when the processor executes the computer program, any step of the above-mentioned motor drive circuit control method is implemented.

[0058] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, any step of the above-mentioned method for controlling a motor drive circuit is implemented.

[0059] The beneficial effects of the present invention are:

[0060] The motor's operating parameters are detected in real time through multiple sets of sensors, and the collected operating parameters are compared with the initial parameters to promptly detect deviation values. By comparing the information judgment model, the safety protection mechanism can be selected to quickly identify and respond to potential faults or damages, reducing the risk of unexpected downtime and equipment damage. Through timely intervention and adjustment, the stable operation of the system and the safety of operators are guaranteed.

[0061] By dividing the risk status into three situations, using a separate comparison mechanism and a fusion comparison mechanism to coordinate and judge, and then combining the two comparison mechanisms, a more detailed risk assessment is provided, making security protection measures more accurate and timely, allowing the system to take different levels of response measures according to the severity of the risk, improving the flexibility and effectiveness of risk management, and being able to judge whether an abnormality occurs through system data, and display the problem more intuitively. By comprehensively considering multiple parameters, the system's evaluation capabilities are enhanced, making decisions more scientific and reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0063] in: Figure 1 The figure is a flow chart of a control method of a motor driving circuit. DETAILED DESCRIPTION

[0064] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0065] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0066] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0067] Example 1

[0068] Reference Figure 1 , which is the first embodiment of the present invention, provides a control method for a motor drive circuit, comprising the following steps:

[0069] S1. Set the initial parameters of the motor drive circuit and collect the motor's operating parameters in real time through multiple sets of sensors.

[0070] S2. Compare the obtained operating parameters with the set initial parameters to obtain the difference between the two sets of parameters.

[0071] The single comparison mechanism comprises the following steps,

[0072] Set the parameter type for comparison, pre-set the corresponding safety threshold according to the parameter type, and obtain the corresponding operating parameters and initial parameters at the same time;

[0073] By calculating the deviation between the operating parameters and the initial parameters, the deviation is compared with the safety threshold;

[0074] When the deviation value is less than or equal to the safety threshold, it is normal;

[0075] When the deviation value is greater than the safety threshold, it is indicated as a risk state and a secondary judgment is performed;

[0076] Until all the set parameter types are compared;

[0077] The second judgment step is: setting the risk status to level one risk, level two risk and level three risk, and setting the multiple value of the safety threshold according to the level one risk, level two risk and level three risk, which is expressed by the formula:

[0078] ;

[0079] In the formula, , and They are respectively represented as the first-level risk, second-level risk and third-level risk judgment values ​​of type i, Represented as a safety threshold of type i, , and They are expressed as multiples of the first-level risk, second-level risk, and third-level risk, and meet the following requirements: ;

[0080] When the deviation value is greater than the judgment value And less than or equal to the judgment value When the deviation value is greater than the judgment value, the parameter type is marked as a first-level risk. And less than or equal to the judgment value When the deviation value is greater than the judgment value, the parameter type is marked as a secondary risk. And, the parameter type is marked as level 3 risk;

[0081] Assume that the parameter type to be compared is temperature, and the corresponding safety threshold of this type is 40°C. The sensor is used to measure the operating parameters of the motor. For example, if the operating parameters are 75°C and the initial temperature parameters are 25°C, the deviation between the operating parameters and the initial parameters is calculated to be 50°C. At this time, the deviation value is greater than the safety threshold, indicating a risk state, so a secondary judgment is required;

[0082] In the second judgment, the formula is used to calculate the multiple values ​​of the first-level risk, the second-level risk and the third-level risk. , and When they are 1, 1.5 and 2 respectively, the judgment value for the first-level risk is 40℃, the judgment value for the second-level risk is 60℃, and the judgment value for the third-level risk is 80℃. At this time, the deviation value is 50℃, and the deviation value is greater than the judgment value for the first-level risk and less than the judgment value for the second-level risk. Therefore, this situation belongs to the first-level risk.

[0083] The fusion contrast mechanism comprises the following steps:

[0084] Pre-set the fusion parameter type and obtain the corresponding operating parameters and initial parameters;

[0085] Integrate the set parameter types and assign a weight value to each parameter type;

[0086] The comprehensive value is obtained by the calculation formula, which is expressed as:

[0087] ;

[0088] In the formula, Expressed as a comprehensive value, Represented as weight value, Expressed as deviation value;

[0089] Among them, the deviation value The calculation formula is:

[0090] ;

[0091] In the formula, Represented as a running parameter of type i, Represented as an initial parameter of type i;

[0092] The comprehensive value and the preset value are judged. When the comprehensive value is greater than the preset value, it is abnormal. When the comprehensive value is not greater than the preset value, it is normal.

[0093] When operating the fusion comparison mechanism, the fusion types set are current, voltage and temperature, and a weight value is assigned to each parameter type. The established weight value reflects its importance to system safety. It is assumed that the current weight is 0.5, the voltage weight is 0.3, and the temperature weight is 0.2.

[0094] Set the initial current parameters =100A, voltage initial parameters =400V, temperature initial parameters =30℃;

[0095] The current operating parameters among the detected operating parameters are: =120A, voltage operating parameters =390V, temperature operating parameters =80℃;

[0096] After that, the calculation of the deviation value is completed, and the current, voltage and temperature are: 20A, 10V and 50℃ respectively;

[0097] By substituting the obtained deviation value into the calculation formula of the comprehensive value, the final comprehensive value is 1.408;

[0098] Assume that the preset value is 1.2, so in this case, the comprehensive value is greater than the preset value, indicating an abnormal state.

[0099] S3. Based on the obtained difference, an information judgment model is introduced, and whether to use the security protection mechanism is selected based on the result of the information judgment model.

[0100] The step of obtaining the difference between the two sets of parameters is:

[0101] Mark normal, first-level risk, second-level risk and third-level risk in the separate comparison mechanism as different scores;

[0102] Introduce the difference formula and calculate the difference. The difference formula is:

[0103] ;

[0104] In the formula, Expressed as a difference, , , and They are expressed as the scores of normal, first-level risk, second-level risk and third-level risk respectively. , , and Expressed as the weight values ​​corresponding to normal, first-level risk, second-level risk and third-level risk, It is expressed as the adjustment number of the comprehensive value. When the judgment result of the fusion comparison mechanism is abnormal, is 1, when the judgment result of the fusion comparison mechanism is normal, is 0;

[0105] During the calculation, the scores of normal, first-level risk, second-level risk and third-level risk are marked as 0, 1, 2 and 3 respectively. In the above calculation, the judgment result of the fusion comparison mechanism is abnormal, so =1, then substitute it into the difference formula to calculate the difference result.

[0106] The operation steps of the information judgment model include:

[0107] Determine the size of the difference, and when the difference is greater than the maximum value of a specific range, activate the safety protection mechanism;

[0108] When the difference is less than the minimum value of a specific range, there is no reaction;

[0109] When the difference is within a specific range, the staff will be reminded;

[0110] By comparing the difference with a specific range, it is determined whether to activate the safety protection mechanism.

[0111] The security protection mechanism includes:

[0112] Preset backup circuits;

[0113] When the safety protection mechanism is activated, the main circuit sends a switching request to the central control terminal, and the backup circuit sends a receiving request to the central control terminal;

[0114] The switching request and the receiving request are judged by the central control terminal;

[0115] When the two sets of requests match each other, the central control terminal performs switching of the backup circuit;

[0116] When the two sets of requests do not match, the central control terminal refuses to switch the backup circuit;

[0117] Among them, when the backup circuit is switched, the initial parameters of the active circuit are first obtained, and the parameter settings of the backup circuit are changed according to the initial parameters, and the synchronization technology and transition control strategy are used for the continuity and stability of the motor operation;

[0118] By switching the backup circuit and the main circuit, and after the switching is completed, if the same problem still occurs, it can be determined that the motor is faulty, not the drive circuit. On the contrary, if it is in a normal state after the switching is completed, it is the drive circuit that is faulty. At this time, maintenance personnel need to judge and repair the circuit to play a role in eliminating the problem.

[0119] S4. Record work logs and provide feedback mechanism to output to the database.

[0120] The work log includes the time, reason, switching process and system status of the switching event;

[0121] After the work log is generated, it is transmitted to the connected display, which makes it convenient for the staff to observe various parameters and can be displayed more intuitively.

[0122] The safety protection mechanism includes an emergency operation mechanism, a problem detection mechanism and a strategy generation mechanism;

[0123] When the operating parameters and the initial parameters are compared, a separate comparison mechanism and a fusion comparison mechanism are included.

[0124] In summary, by using multiple sets of sensors to detect the motor's operating parameters in real time and comparing the collected operating parameters with the initial parameters, the deviation value can be discovered in time. Then, by comparing the information judgment model, the safety protection mechanism can be selected to quickly identify and respond to potential faults or damages, reducing the risk of unexpected downtime and equipment damage, and ensuring the stable operation of the system and the safety of operators through timely intervention and adjustment.

[0125] By dividing the risk status into three situations, using a separate comparison mechanism and a fusion comparison mechanism to coordinate and judge, and then combining the two comparison mechanisms, a more detailed risk assessment is provided, making security protection measures more accurate and timely, allowing the system to take different levels of response measures according to the severity of the risk, improving the flexibility and effectiveness of risk management, and being able to judge whether an abnormality occurs through system data, and display the problem more intuitively. By comprehensively considering multiple parameters, the system's evaluation capabilities are enhanced, making decisions more scientific and reasonable.

[0126] Example 2

[0127] On the basis of the first embodiment, this embodiment further provides a control system for a motor drive circuit, including a collection module, an information calculation module, an information judgment module, and a database;

[0128] The acquisition module is used to collect the operating parameters of the motor and use the collected information for subsequent calculations;

[0129] The information calculation module is used to compare the operating parameters with the initial parameters and finally obtain the difference;

[0130] The information judgment module is used to judge the operation of the motor drive circuit and select whether to use the safety protection mechanism;

[0131] The database is used to store the time, cause, switching process and system status of the switching event.

[0132] This embodiment also provides a computer device suitable for the control method of a motor drive circuit, comprising a memory and a processor; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to implement the control method of the motor drive circuit proposed in the above embodiment.

[0133] The computer device may be a terminal, and the computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a key, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0134] This embodiment further provides a storage medium on which a computer program is stored. When the program is executed by a processor, the control method for the motor drive circuit proposed in the above embodiment is implemented.

[0135] The storage medium proposed in this embodiment and the data storage method proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be found in the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0136] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the present invention.

Claims

1. A control method for a motor drive circuit, characterized in that: The following steps are included: Set the initial parameters of the motor drive circuit and collect the motor's operating parameters in real time through multiple sets of sensors; Compare the obtained operating parameters with the set initial parameters to obtain the difference between the two sets of parameters; According to the obtained difference, an information judgment model is introduced, and whether to use the security protection mechanism is selected according to the result of the information judgment model; Record work logs and provide feedback mechanism to output to the database; The safety protection mechanism includes an emergency operation mechanism, a problem detection mechanism and a strategy generation mechanism; When the operating parameters and the initial parameters are compared, a separate comparison mechanism and a fusion comparison mechanism are included; The single comparison mechanism comprises the following steps, Set the parameter type for comparison, pre-set the corresponding safety threshold according to the parameter type, and obtain the corresponding operating parameters and initial parameters at the same time; By calculating the deviation between the operating parameters and the initial parameters, the deviation is compared with the safety threshold; When the deviation value is less than or equal to the safety threshold, it is normal; When the deviation value is greater than the safety threshold, it is indicated as a risk state and a secondary judgment is performed; Until all the set parameter types are compared; The second judgment step is: setting the risk status to level one risk, level two risk and level three risk, and setting the multiple value of the safety threshold according to the level one risk, level two risk and level three risk, which is expressed by the formula: In the formula, F i 1 、F i 2 and F i 3 They are respectively represented as the first-level risk, second-level risk and third-level risk judgment values ​​of type i, L i Expressed as the safety threshold of type i, α 1 , α 2 and α 3 They are expressed as multiples of the first-level risk, second-level risk, and third-level risk, respectively, and satisfy α 1 <α 2 <α 3 ; When the deviation value is greater than the judgment value F i 1 And less than or equal to the judgment value F i 2 When the deviation value is greater than the judgment value F i 2 And less than or equal to the judgment value F i 3 When the deviation value is greater than the judgment value F, the parameter type is marked as a secondary risk. i 3 And, the parameter type is marked as level 3 risk; The fusion contrast mechanism comprises the following steps: Pre-set the fusion parameter type and obtain the corresponding operating parameters and initial parameters; Integrate the set parameter types and assign a weight value to each parameter type; The comprehensive value is obtained by the calculation formula, which is expressed as: Where D total Expressed as a comprehensive value, W i Expressed as weight value, D i Expressed as deviation value; Among them, the deviation value D i The calculation formula is: D i =|V i -T i |; Where V i Represented as an operating parameter of type i, T i Represented as an initial parameter of type i; When the comprehensive value is greater than the preset value, it indicates abnormality, and when the comprehensive value is not greater than the preset value, it indicates normal.

2. The control method of the motor driving circuit according to claim 1, wherein: The step of obtaining the difference between the two sets of parameters is: Mark normal, first-level risk, second-level risk and third-level risk in the separate comparison mechanism as different scores; Introduce the difference formula and calculate the difference. The difference formula is: In the formula, X represents the difference, R1, R2, R3 and R4 represent the scores of normal, first-level risk, second-level risk and third-level risk respectively, χ1, χ1, χ1 and χ1 represent the weight values ​​corresponding to normal, first-level risk, second-level risk and third-level risk respectively. It is expressed as the adjustment number of the comprehensive value. When the judgment result of the fusion comparison mechanism is abnormal, is 1, when the judgment result of the fusion comparison mechanism is normal, is 0.

3. The control method of the motor driving circuit according to claim 2, wherein: The operation steps of the information judgment model include: Determine the size of the difference, and when the difference is greater than the maximum value of a specific range, activate the safety protection mechanism; When the difference is less than the minimum value of a specific range, there is no reaction; When the difference is within a specific range, the staff will be reminded.

4. The control method of the motor driving circuit according to claim 3, wherein: The security protection mechanism includes: Preset backup circuits; When the safety protection mechanism is activated, the main circuit sends a switching request to the central control terminal, and the backup circuit sends a receiving request to the central control terminal; The switching request and the receiving request are judged by the central control terminal; When the two sets of requests match each other, the central control terminal performs switching of the backup circuit; When the two sets of requests do not match, the central control terminal refuses to switch the backup circuit; Among them, when the backup circuit is switched, the initial parameters of the active circuit are first obtained, and the parameter settings of the backup circuit are changed according to the initial parameters. The synchronization technology and transition control strategy are used for the continuity and stability of the motor operation.

5. The control method of the motor drive circuit according to claim 1 or 4, characterized in that: The work log includes the time, reason, switching process and system status of the switching event; After the work log is generated, it is transmitted to the connected display.

6. A control system for a motor drive circuit, based on the control method for a motor drive circuit according to any one of claims 1 to 5, characterized in that: It includes a collection module, an information calculation module, an information judgment module, and a database; The acquisition module is used to collect the operating parameters of the motor and use the collected information for subsequent calculations; The information calculation module is used to compare the operating parameters with the initial parameters and finally obtain the difference; The information judgment module is used to judge the operation of the motor drive circuit and select whether to use the safety protection mechanism; The database is used to store the time, cause, switching process and system status of the switching event.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the motor drive circuit control method according to any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the motor drive circuit control method according to any one of claims 1 to 5 are implemented.

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