A control method and system for an outer rotor permanent magnet motor based on feedback optimization

Abstract

The present invention provides a control method and system for an outer rotor permanent magnet motor based on feedback optimization, which relates to the technical field of permanent magnet motors. The method obtains the temperature rise constraint standard value of the motor components according to the basic information of the outer rotor permanent magnet motor, obtains the experimental temperature rise data and the actual temperature rise data of the target outer rotor permanent magnet motor in the experimental environment and the working environment based on the experimental environment parameters, and compares the two data to obtain the temperature rise deviation data. The heat dissipation scheme is corrected based on the temperature rise deviation data to obtain the temperature control scheme, and the temperature control scheme is corrected based on the component temperature rise constraint standard value combined with the actual temperature rise data. The technical problem that the temperature control scheme of the outer rotor permanent magnet motor in the prior art is not high in accuracy and there is a risk of local overheating causing equipment damage is solved. The technical effect of accurately controlling the temperature of the outer rotor permanent magnet motor and keeping the outer rotor permanent magnet motor in a safe operating temperature range from the whole to the part is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet motors, and in particular to a control method and system for an outer rotor permanent magnet motor based on feedback optimization. Background Art

[0002] With the technological innovation in the mechanical field, more and more high-performance motors are designed and put into production based on different application purposes. Outer rotor permanent magnet motors are widely used as energy conversion devices in various drive control systems due to their advantages of high efficiency and high reliability.

[0003] If the temperature of the outer rotor permanent magnet motor is too high during operation, it will affect its normal operation. Currently, temperature control is often performed by installing a radiator on the outer rotor permanent magnet motor to avoid overheating. However, the existing temperature control scheme is too extensive, and there is a defect that some structures of the outer rotor permanent magnet motor may be overheated, interfering with the operation of the equipment.

[0004] In the prior art, the temperature control scheme of the outer rotor permanent magnet motor is unreasonably designed and the heat dissipation accuracy is low. There are technical problems that lead to local overheating of the components and untimely heat dissipation, causing the outer rotor permanent magnet motor to have operating failures or even damage risks. Summary of the invention

[0005] The present application provides a control method and system for an outer rotor permanent magnet motor based on feedback optimization, which is used to solve the technical problems in the prior art that the temperature control scheme of the outer rotor permanent magnet motor is unreasonable in design, the heat dissipation accuracy is not high, and there is a risk of local over-temperature of the components and untimely heat dissipation, causing the outer rotor permanent magnet motor to have operating failures or even damage.

[0006] In view of the above problems, the present application provides an outer rotor permanent magnet motor control method and system based on feedback optimization.

[0007] In a first aspect of the present application, a method for controlling an outer rotor permanent magnet motor based on feedback optimization is provided, the method comprising: collecting basic information of a target outer rotor permanent magnet motor; constraining the temperature rise of components of the target outer rotor permanent magnet motor according to the basic information to obtain a standard value of the temperature rise constraint of the components; collecting actual working environment data, and fitting experimental environment parameters based on the actual working environment data; experimentally fitting the target outer rotor permanent magnet motor through the experimental environment parameters to obtain experimental temperature rise data; after placing the target outer rotor permanent magnet motor in an actual working environment, performing experimental parameter control, and performing real-time temperature rise data acquisition through the temperature acquisition device to obtain actual temperature rise data; obtaining temperature rise deviation data based on the actual temperature rise data and the experimental temperature rise data, and correcting the heat dissipation scheme based on the temperature rise deviation data to obtain a temperature control scheme; obtaining component warning data through the standard value of the component temperature rise constraint and the actual temperature rise data, correcting the temperature control scheme based on the component warning data, and performing feedback optimization control of the target outer rotor permanent magnet motor based on the corrected temperature control scheme.

[0008] In a second aspect of the present application, a feedback-optimized outer rotor permanent magnet motor control system is provided, the system comprising: a basic information acquisition module, used to acquire basic information of a target outer rotor permanent magnet motor; a temperature rise constraint generation module, used to perform component temperature rise constraints on the target outer rotor permanent magnet motor according to the basic information, and obtain component temperature rise constraint standard values; an experimental parameter fitting module, used to acquire actual working environment data, and fit experimental environment parameters based on the actual working environment data; an experimental data acquisition module, used to perform experimental fitting on the target outer rotor permanent magnet motor through the experimental environment parameters, and obtain experimental temperature rise data; an actual data acquisition module, used to After placing the target outer rotor permanent magnet motor in an actual working environment, experimental parameter control is performed, and real-time temperature rise data is collected through a temperature acquisition device to obtain actual temperature rise data; a temperature control scheme generation module is used to obtain temperature rise deviation data based on the actual temperature rise data and the experimental temperature rise data, and to correct the heat dissipation scheme based on the temperature rise deviation data to obtain a temperature control scheme; a temperature control scheme optimization module is used to obtain component warning data through the component temperature rise constraint standard value and the actual temperature rise data, to correct the temperature control scheme based on the component warning data, and to perform feedback optimization control of the target outer rotor permanent magnet motor based on the corrected temperature control scheme.

[0009] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0010] The method provided in the embodiment of the present application acquires basic information of the target outer rotor permanent magnet motor to obtain the composition status of the motor components, thereby providing structural information for subsequent precise temperature control of the motor components. According to the basic information, the temperature rise constraint of the components of the target outer rotor permanent magnet motor is performed to obtain the component temperature rise constraint standard value; the actual working environment data is collected, and the experimental environment parameters are fitted based on the actual working environment data; the target outer rotor permanent magnet motor is experimentally fitted through the experimental environment parameters to obtain experimental temperature rise data; after the target outer rotor permanent magnet motor is placed in the actual working environment, the experimental parameter control is performed, and the real-time temperature rise data is collected through the temperature acquisition device to obtain actual temperature rise data; the temperature rise deviation data is obtained based on the actual temperature rise data and the experimental temperature rise data, and the heat dissipation scheme is corrected based on the temperature rise deviation data to obtain a temperature control scheme, so as to achieve temperature control of the target outer rotor permanent magnet motor from the perspective of the constituent components, and the component early warning data is obtained through the component temperature rise constraint standard value and the actual temperature rise data, and the temperature control scheme is corrected based on the component early warning data to avoid the temperature change of the constituent components exceeding the component temperature constraint requirements, and the feedback optimization control of the target outer rotor permanent magnet motor is performed based on the corrected temperature control scheme, so as to achieve the technical effect of precise temperature control of the outer rotor permanent magnet motor and the outer rotor permanent magnet motor being in a safe operating temperature range from the whole to the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A flow chart of a method for controlling an outer rotor permanent magnet motor based on feedback optimization provided in this application;

[0012] Figure 2 A schematic diagram of a flow chart for generating an independent temperature control optimization scheme in a feedback-optimization-based outer-rotor permanent magnet motor control method provided in the present application;

[0013] Figure 3 A schematic diagram of a process for generating component warning data in a feedback-optimized outer rotor permanent magnet motor control method provided in the present application;

[0014] Figure 4 A schematic structural diagram of an outer rotor permanent magnet motor control system based on feedback optimization provided in this application.

[0015] Description of the accompanying drawings: basic information collection module 11, temperature rise constraint generation module 12, experimental parameter fitting module 13, experimental data acquisition module 14, actual data collection module 15, temperature control scheme generation module 16, temperature control scheme optimization module 17. DETAILED DESCRIPTION

[0016] The present application provides a control method and system for an outer rotor permanent magnet motor based on feedback optimization, which is used to solve the technical problems in the prior art that the temperature control scheme of the outer rotor permanent magnet motor is unreasonable in design, the heat dissipation accuracy is not high, and there is a risk of local over-temperature of the components and untimely heat dissipation, causing the outer rotor permanent magnet motor to have operating failures or even damage.

[0017] In response to the above technical problems, the overall idea of ​​the technical solution provided by this application is as follows:

[0018] According to the component composition of the outer rotor permanent magnet motor, the temperature range for safe operation of each component is obtained, and the component temperature change data of the outer rotor permanent magnet motor in experimental scenarios and real working scenarios is obtained. The specific components with temperature deviations are compared and determined, and the temperature control plan is corrected based on the temperature deviation components. A temperature control plan is obtained in which each component is within the safe temperature range, and precise temperature control of the outer rotor permanent magnet motor from the whole to the part is achieved, ensuring that the outer rotor permanent magnet motor is in a safe operating state.

[0019] Embodiment 1: Figure 1 As shown, the present application provides an outer rotor permanent magnet motor control method based on feedback optimization, the method is applied to a control feedback system, the control feedback system is communicatively connected with a temperature acquisition device, and the method includes:

[0020] S100: Collecting basic information of the target outer rotor permanent magnet motor;

[0021] Specifically, a permanent magnet motor is a DC motor with a permanent magnet stator and a coil rotor. It is gradually widely used in various mechanical devices as an energy conversion device due to its advantages such as simple structure and high efficiency. The outer rotor permanent magnet motor has a long rotor arm, the permanent magnet is on the outside of the motor, and the temperature difference between the stator and the rotor is large. The heat is directly dissipated through the outer surface of the rotor or air cooling and / or water cooling devices are set to assist in heat dissipation.

[0022] In this embodiment, the target outer rotor permanent magnet motor is a permanent magnet motor having basic structural components of an outer rotor permanent magnet motor and proprietary components for achieving certain functional purposes.

[0023] S200: performing component temperature rise constraints on the target outer rotor permanent magnet motor according to the basic information to obtain component temperature rise constraint standard values;

[0024] Specifically, it should be understood that in step S100 of the present embodiment, basic information of the target outer rotor permanent magnet motor is obtained, and based on the basic information, information of basic components and functional components constituting the target permanent magnet motor and the temperature range in which each component maintains the target outer rotor permanent magnet motor to avoid damage due to overheating are obtained, that is, the component temperature rise constraint is obtained, and a set of component temperature rise constraint standard values ​​is obtained. When the temperature of each component of the target outer rotor permanent magnet motor does not exceed the corresponding component temperature rise constraint during operation, the target outer rotor permanent magnet motor maintains a normal operating state.

[0025] S300: Collecting actual working environment data, and fitting experimental environment parameters based on the actual working environment data;

[0026] Specifically, in this embodiment, the use scenario of the target outer rotor permanent magnet motor is obtained. For example, the target outer rotor permanent magnet motor can be installed in mechanical equipment such as electric vehicles and ball mills. According to the use scenario of the target outer rotor permanent magnet motor, its actual working environment information is obtained, and multiple groups of working environment data including power, voltage, and current information of the actual working environment of the target outer rotor permanent magnet motor are collected to generate a working environment data set, and each working environment data is fitted to exclude abnormal working environment data, and generate experimental environment parameters, so as to facilitate the subsequent reproduction of the working environment scene in the laboratory based on the actual working environment data of the target outer rotor permanent magnet motor.

[0027] S400: performing experimental fitting on the target outer rotor permanent magnet motor according to the experimental environment parameters to obtain experimental temperature rise data;

[0028] S500: After placing the target outer rotor permanent magnet motor in an actual working environment, perform experimental parameter control, and collect real-time temperature rise data through the temperature collection device to obtain actual temperature rise data;

[0029] Specifically, in this embodiment, the temperature acquisition device is distributed on each component of the target outer rotor permanent magnet motor to realize temperature acquisition of each component. A simulated working scene is constructed based on the experimental environment parameters, and the target outer rotor permanent magnet motor is experimentally fitted to obtain the experimental temperature rise data composed of temperature data of multiple components.

[0030] The target outer rotor permanent magnet motor is placed in an actual working environment, and its working parameters in the actual working environment are controlled to be consistent with the working parameters in the experimental scenario, and actual temperature rise data of the target outer rotor permanent magnet motor is acquired. The actual temperature rise data is consistent with the experimental temperature rise data, and both are temperature data of each component collected by the temperature acquisition device.

[0031] S600: obtaining temperature rise deviation data based on the actual temperature rise data and the experimental temperature rise data, and correcting the heat dissipation scheme based on the temperature rise deviation data to obtain a temperature control scheme;

[0032] Further, such as Figure 2 As shown, the method steps provided by the present application also include:

[0033] S610: Matching a temperature rise deviation component according to the temperature rise deviation data;

[0034] S620: When the temperature of the temperature rise deviation component is a higher temperature difference, an independent temperature reduction evaluation is performed on the temperature rise deviation component;

[0035] S630: When the temperature rise deviation component allows independent cooling, an independent temperature control optimization solution is generated based on the deviation value of the temperature rise deviation component.

[0036] Furthermore, the method steps provided in this application also include:

[0037] S640: When the temperature rise deviation component does not allow independent temperature reduction, a combined temperature control scheme set is obtained based on the temperature rise deviation data;

[0038] S650: Performing a cooling cost evaluation on the combined temperature control scheme set, and outputting a cooling cost evaluation result;

[0039] S660: Select a combined temperature control scheme corresponding to the lowest cooling cost in the cooling cost evaluation results to perform feedback optimization control of the target outer rotor permanent magnet motor.

[0040] Specifically, in this embodiment, each component of the target outer rotor permanent magnet motor is equipped with a temperature collection device for temperature collection, so that there is a one-to-one correspondence between the multiple component temperature data in the actual heating data of the target outer rotor permanent magnet motor and the multiple component temperature data in the experimental heating data, and corresponds to a specific component.

[0041] The temperature data of each component in the experimental heating data is compared one by one with the actual heating data. When the experimental heating data of a component is inconsistent with the actual heating data, it indicates that there is a heating deviation between the two. The experimental heating data of the component and the actual heating data of the component constitute the heating deviation data. The component corresponding to the heating deviation data in the target outer rotor permanent magnet motor is matched according to the temperature rise deviation data to obtain the temperature rise deviation component.

[0042] It should be understood that currently, a common method to prevent permanent magnet motors from being damaged due to over-temperature operation is to provide the permanent magnet motors with an air circulation cooling device and / or an air cooling device and / or a water cooling device.

[0043] Therefore, in this embodiment, after obtaining the temperature rise deviation component with a deviation between the experimental temperature and the actual temperature, a heat dissipation structure analysis is performed based on the basic information of the target outer rotor permanent magnet motor to obtain the specific type and distribution of the heat dissipation device in the target permanent magnet motor. According to the type and distribution of the heat dissipation device of the target permanent magnet motor obtained by analysis and combined with the temperature rise deviation component, it is determined whether the temperature rise deviation component is independently provided with a heat dissipation device, thereby determining whether the temperature rise deviation component is allowed to perform independent cooling.

[0044] When the temperature rise deviation component has a relatively low temperature difference, the temperature rise difference does not interfere with the normal operation of the target outer rotor permanent magnet motor, so there is no need to perform temperature control operation on the temperature rise deviation component.

[0045] When the temperature of the temperature rise deviation component is a high temperature difference, the temperature rise deviation component is first evaluated for independent temperature reduction to determine whether the temperature rise deviation component is allowed to be independently cooled. When the temperature rise deviation component is allowed to be independently cooled, an independent temperature control optimization solution is generated according to the deviation value of the temperature rise deviation component combined with the original temperature control solution of the target outer rotor permanent magnet motor, so as to avoid a certain component from insufficiently dissipating heat during operation, resulting in excessive temperature, causing abnormal operation or even damage to the outer rotor permanent magnet motor.

[0046] When the independent cooling evaluation result is that the temperature rise deviation component does not allow independent cooling, a plurality of combined temperature control schemes are obtained based on the temperature rise deviation data set and the cooling device configured for the target outer rotor permanent magnet motor to form the combined temperature control scheme set, and a cooling cost evaluation is performed on each combined temperature control scheme in the combined temperature control scheme set, and a cooling cost evaluation result is output. The cooling costs are sorted according to the cooling costs to obtain the combined temperature control scheme with the lowest cost, and the combined temperature control scheme corresponding to the lowest cooling cost in the cooling cost evaluation result is selected to perform feedback optimization control of the target outer rotor permanent magnet motor.

[0047] In this embodiment, the temperature control scheme is obtained by modifying the original heat dissipation scheme of the target outer rotor permanent magnet motor by using the combined temperature control scheme and the independent temperature control scheme.

[0048] This embodiment compares whether the temperature change conditions of various components of the target outer rotor permanent magnet motor are consistent under the experimental environment and the actual working environment, thereby accurately locating the specific components with temperature deviations, and generating cooling plans for the temperature deviation components based on independent cooling evaluation and judgment, thereby achieving the technical effect of optimizing the temperature control plan for the outer rotor permanent magnet motor and accurately controlling the temperature of specific components with temperature deviations.

[0049] S700: Obtain component warning data through the component temperature rise constraint standard value and the actual temperature rise data, modify the temperature control scheme based on the component warning data, and perform feedback optimization control of the target outer rotor permanent magnet motor based on the modified temperature control scheme.

[0050] Further, such as Figure 3 As shown, step S700 of the method provided by the present application also includes:

[0051] S710: Obtaining a component temperature rise rate parameter according to the actual temperature rise data;

[0052] S720: Obtain a temperature rise warning component according to the component temperature rise constraint standard value and the actual temperature rise data;

[0053] S730: Obtain the component warning data based on the temperature rise rate parameter and the temperature rise warning component.

[0054] Specifically, it should be understood that heat dissipation adjustment for the target outer rotor permanent magnet motor often occurs after the target outer rotor permanent magnet motor experiences a temperature rise phenomenon. At the same time, when the component temperature rise rate parameter reflects the temperature rise rate of a component of the target outer rotor permanent magnet motor from a time dimension. The component warning data is the time node data when the temperature rise rate parameter changes to reach the component temperature rise constraint standard value. This embodiment does not impose any restrictions on the specific method for obtaining the component warning data.

[0055] In this embodiment, the component temperature rise constraint standard value and actual temperature rise data of each component of the target outer rotor permanent magnet motor are compared to obtain the temperature rise warning component whose temperature rise condition does not meet the component temperature rise constraint standard value during the normal operation of the target outer rotor permanent magnet motor. The component temperature rise rate parameter is obtained by calculating the actual temperature rise data of the component obtained by the temperature acquisition device and the operating time of the target outer rotor permanent magnet motor.

[0056] The component warning data is obtained based on the temperature rise rate parameter and the temperature rise warning component, and the temperature control scheme is corrected based on the component warning data, and some temperature control schemes whose heat dissipation effects do not meet the component temperature rise constraint standard value are corrected to obtain a corrected temperature control scheme, and feedback optimization control of the target outer rotor permanent magnet motor is performed based on the corrected temperature control scheme.

[0057] This embodiment compares the actual temperature rise data with the component temperature rise constraint standard value, and adjusts the partial temperature control scheme whose temperature control effect does not meet the component temperature rise constraint standard value requirements, thereby realizing further correction and optimization of the temperature control scheme, thereby achieving an accurate temperature control scheme in which the temperature control of each component of the target outer rotor permanent magnet motor meets the component temperature rise constraint standard value requirements, thereby ensuring the technical effect of stable operation of the outer rotor permanent magnet motor.

[0058] The method provided in the embodiment of the present application acquires basic information of the target outer rotor permanent magnet motor to obtain the composition status of the motor components, thereby providing structural information for subsequent precise temperature control of the motor components. According to the basic information, the temperature rise constraint of the components of the target outer rotor permanent magnet motor is performed to obtain the component temperature rise constraint standard value; the actual working environment data is collected, and the experimental environment parameters are fitted based on the actual working environment data; the target outer rotor permanent magnet motor is experimentally fitted through the experimental environment parameters to obtain experimental temperature rise data; after the target outer rotor permanent magnet motor is placed in the actual working environment, the experimental parameter control is performed, and the real-time temperature rise data is collected through the temperature acquisition device to obtain actual temperature rise data; the temperature rise deviation data is obtained based on the actual temperature rise data and the experimental temperature rise data, and the heat dissipation scheme is corrected based on the temperature rise deviation data to obtain a temperature control scheme, so as to achieve temperature control of the target outer rotor permanent magnet motor from the perspective of the constituent components, and the component early warning data is obtained through the component temperature rise constraint standard value and the actual temperature rise data, and the temperature control scheme is corrected based on the component early warning data to avoid the temperature change of the constituent components exceeding the component temperature constraint requirements, and the feedback optimization control of the target outer rotor permanent magnet motor is performed based on the corrected temperature control scheme, so as to achieve the technical effect of precise temperature control of the outer rotor permanent magnet motor and the outer rotor permanent magnet motor being in a safe operating temperature range from the whole to the part.

[0059] Furthermore, the method steps provided in this application also include:

[0060] S721: Obtaining a temperature control hysteresis estimate value of the temperature rise warning component according to the temperature control solution;

[0061] S722: Predicting the temperature of the temperature rise warning component based on the temperature control hysteresis estimated value and the temperature rise rate parameter to obtain a temperature prediction result;

[0062] S723: Determine whether the temperature prediction result is within the temperature rise constraint standard value range. When the temperature prediction result is within the temperature rise constraint standard value range, do not perform correction or adjustment on the temperature control scheme.

[0063] Specifically, in this embodiment, it should be understood that when the target outer rotor permanent magnet motor is temperature controlled, the temperature change of each component is within the component temperature rise constraint standard value range. The temperature control hysteresis estimate reflects the delay between the actual heat dissipation temperature control adjustment and the temperature rise change of the temperature rise warning component.

[0064] This embodiment obtains the temperature control hysteresis estimate value based on the delay between the temperature rise of the temperature rise warning component and the actual start of the temperature control operation under the temperature control scheme. The temperature of the temperature rise warning component is predicted based on the temperature control hysteresis estimate value and the temperature rise rate parameter to obtain the temperature prediction result, which is the limit temperature of the component during the operation of the target outer rotor permanent magnet motor under normal working environment.

[0065] Determine whether the temperature prediction result corresponding to the component is within the temperature rise constraint standard value range of the component. When the temperature prediction result is within the temperature rise constraint standard value range, it indicates that the temperature rise of the corresponding component during operation is within the normal temperature range of the target outer rotor permanent magnet motor under the condition of temperature control adjustment by the normal temperature control scheme, and therefore the temperature control scheme is not corrected or adjusted.

[0066] The temperature control scheme obtained in step S600 is an optimal temperature control scheme that ensures that the temperature changes of various components of the target outer rotor permanent magnet motor during operation are within the temperature rise constraint standard value range, and feedback optimization control of the target outer rotor permanent magnet motor is performed based on the temperature control scheme.

[0067] This embodiment compares the actual temperature rise with the component temperature rise constraint value, and performs temperature control lag analysis, so as to achieve accurate estimation of the temperature change of each component during the operation of the outer rotor permanent magnet motor, thereby adjusting the original temperature control scheme, and achieving the technical effect of obtaining a temperature control scheme that can accurately control the temperature of the target outer rotor permanent magnet motor, so as to maintain the normal operating temperature and avoid damage to the outer rotor permanent magnet motor caused by excessive temperature of the components.

[0068] Furthermore, the method steps provided in this application also include:

[0069] S724: When the temperature prediction result is not within the temperature rise constraint standard value range, determining the allowable hysteresis value according to the temperature rise rate parameter and the temperature rise constraint standard value;

[0070] S725: Generate the component warning data based on the allowable hysteresis value.

[0071] Furthermore, the method steps provided in this application also include:

[0072] S725-1: Setting the allowable range of component temperature control error;

[0073] S725-2: adjusting the allowable hysteresis value based on the allowable range of the component temperature control error to obtain an adjusted allowable hysteresis value;

[0074] S725-3: Generate the component warning data by adjusting the permission hysteresis value.

[0075] Specifically, the component temperature control error allowable interval is the temperature control adjustment delay, and the temperature rise of the temperature rise warning component is still within the temperature rise constraint standard value range. In this embodiment, when the component limit temperature reflected by the temperature prediction result is not within the temperature rise constraint standard value range, it indicates that the temperature control scheme obtained based on step S600 cannot ensure that the target outer rotor permanent magnet motor does not have a high temperature damage risk during operation.

[0076] Therefore, the present embodiment optimizes and modifies the temperature control scheme in this case, determines the allowable hysteresis value according to the temperature rise rate parameter and the temperature rise constraint standard value, adjusts the allowable hysteresis value based on the set allowable interval of the component temperature control error, and obtains the adjusted allowable hysteresis value; generates the component warning data through the adjusted allowable hysteresis value, modifies the temperature control scheme based on the component warning data, and performs feedback optimization control of the target outer rotor permanent magnet motor based on the modified temperature control scheme.

[0077] This embodiment further optimizes and corrects the temperature control scheme by adjusting the allowable hysteresis value of the component temperature control error when the temperature prediction result is not within the temperature rise constraint standard value range, thereby achieving the technical effect of obtaining precise temperature regulation and control of the target outer rotor permanent magnet motor from the perspective of component details.

[0078] Embodiment 2: Based on the same inventive concept as the outer rotor permanent magnet motor control method based on feedback optimization in the above embodiment, Figure 4 As shown, the present application provides an outer rotor permanent magnet motor control system based on feedback optimization, wherein the system comprises:

[0079] A basic information acquisition module 11 is used to acquire basic information of the target outer rotor permanent magnet motor;

[0080] A temperature rise constraint generating module 12 is used to perform temperature rise constraints on components of the target outer rotor permanent magnet motor according to the basic information to obtain component temperature rise constraint standard values;

[0081] An experimental parameter fitting module 13 is used to collect actual working environment data and fit experimental environment parameters based on the actual working environment data;

[0082] An experimental data acquisition module 14 is used to perform experimental fitting on the target outer rotor permanent magnet motor through the experimental environment parameters to obtain experimental temperature rise data;

[0083] The actual data acquisition module 15 is used to place the target outer rotor permanent magnet motor in an actual working environment, perform experimental parameter control, and collect real-time temperature rise data through a temperature acquisition device to obtain actual temperature rise data;

[0084] A temperature control scheme generating module 16 is used to obtain temperature rise deviation data based on the actual temperature rise data and the experimental temperature rise data, and to correct the heat dissipation scheme based on the temperature rise deviation data to obtain a temperature control scheme;

[0085] The temperature control scheme optimization module 17 is used to obtain component warning data through the component temperature rise constraint standard value and the actual temperature rise data, modify the temperature control scheme based on the component warning data, and perform feedback optimization control of the target outer rotor permanent magnet motor based on the modified temperature control scheme.

[0086] Furthermore, the temperature control scheme generating module 16 also includes:

[0087] A temperature rise deviation application unit, used for matching a temperature rise deviation component according to the temperature rise deviation data;

[0088] A temperature reduction evaluation execution unit, configured to perform an independent temperature reduction evaluation on the temperature rise deviation component when the temperature of the temperature rise deviation component is a higher temperature difference;

[0089] The independent temperature control generating unit is used to generate an independent temperature control optimization scheme based on the deviation value of the temperature rise deviation component when the temperature rise deviation component allows independent temperature reduction.

[0090] Furthermore, the temperature control scheme generating module 16 also includes:

[0091] A combined temperature control generating unit, used for obtaining a combined temperature control scheme set based on the temperature rise deviation data when the temperature rise deviation component is not allowed to perform independent temperature reduction;

[0092] A cooling cost evaluation unit, used to perform cooling cost evaluation on the combined temperature control scheme set and output a cooling cost evaluation result;

[0093] The feedback optimization generation unit is used to select a combined temperature control scheme corresponding to the lowest cooling cost in the cooling cost evaluation result to perform feedback optimization control on the target outer rotor permanent magnet motor.

[0094] Furthermore, the temperature control scheme optimization module 17 also includes:

[0095] A component temperature rise calculation unit, used to obtain a component temperature rise rate parameter according to the actual temperature rise data;

[0096] A temperature rise warning obtaining unit, used to obtain a temperature rise warning component through the component temperature rise constraint standard value and the actual temperature rise data;

[0097] The warning data obtaining unit is used to obtain the component warning data based on the temperature rise rate parameter and the temperature rise warning component.

[0098] Furthermore, the temperature rise warning obtaining unit further includes:

[0099] A temperature control hysteresis estimation unit, used to obtain a temperature control hysteresis estimation value of the temperature rise warning component according to the temperature control scheme;

[0100] A temperature prediction execution unit, configured to perform temperature prediction of the temperature rise warning component based on the temperature control hysteresis prediction value and the temperature rise rate parameter to obtain a temperature prediction result;

[0101] The prediction result judgment unit is used to judge whether the temperature prediction result is within the temperature rise constraint standard value range. When the temperature prediction result is within the temperature rise constraint standard value range, no correction adjustment is performed on the temperature control scheme.

[0102] Furthermore, the temperature rise warning obtaining unit further includes:

[0103] A judgment result execution unit, configured to determine an allowable hysteresis value according to the temperature rise rate parameter and the temperature rise constraint standard value when the temperature prediction result is not within the temperature rise constraint standard value range;

[0104] A component warning generating unit is used to generate the component warning data based on the allowable hysteresis value.

[0105] Furthermore, the component warning generation unit further includes:

[0106] An error range setting unit, used to set a permissible error range for component temperature control;

[0107] an allowable hysteresis adjustment unit, configured to adjust the allowable hysteresis value based on the allowable range of the component temperature control error to obtain an adjusted allowable hysteresis value;

[0108] A hysteresis value application unit is used to generate the component warning data by using the adjustment permission hysteresis value.

[0109] Any of the methods or steps described above may be stored as computer instructions or programs in various types of computer memories, and the computer instructions or programs may be recognized by various types of computer processors to implement any of the methods or steps described above.

[0110] Based on the above specific embodiments of the present invention, any improvements and modifications made to the present invention by those skilled in the art without departing from the principles of the present invention shall fall within the patent protection scope of the present invention.

Claims

1. A control method for an outer rotor permanent magnet motor based on feedback optimization, characterized in that: The method is applied to a control feedback system, the control feedback system is communicatively connected with a temperature acquisition device, and the method comprises: Collect basic information of the target outer rotor permanent magnet motor; According to the basic information, the component temperature rise constraint of the target outer rotor permanent magnet motor is performed to obtain the component temperature rise constraint standard value, that is, based on the basic information, the basic components and functional component information constituting the target outer rotor permanent magnet motor and the temperature range of each component to maintain the target outer rotor permanent magnet motor to avoid damage due to overheating are obtained, that is, the component temperature rise constraint is obtained, and the component temperature rise constraint standard value set is obtained. When the temperature of each component of the target outer rotor permanent magnet motor does not exceed the corresponding component temperature rise constraint during operation, the target outer rotor permanent magnet motor maintains a normal operating state; Collecting actual working environment data, and fitting experimental environment parameters based on the actual working environment data, that is, collecting multiple groups of working environment data including power, voltage, and current information of the actual working environment of the target outer rotor permanent magnet motor, generating a working environment data set, fitting each working environment data, excluding abnormal working environment data, and generating experimental environment parameters; Performing experimental fitting on the target outer rotor permanent magnet motor through the experimental environment parameters to obtain experimental temperature rise data; After placing the target outer rotor permanent magnet motor in an actual working environment, performing experimental parameter control, and collecting real-time temperature rise data through the temperature collection device to obtain actual temperature rise data; Obtaining temperature rise deviation data based on the actual temperature rise data and the experimental temperature rise data, and correcting the heat dissipation scheme based on the temperature rise deviation data to obtain a temperature control scheme; matching a temperature rise deviation component according to the temperature rise deviation data; When the temperature of the temperature rise deviation component is a higher temperature difference, an independent temperature reduction evaluation is performed on the temperature rise deviation component; When the temperature rise deviation component allows independent temperature reduction, an independent temperature control optimization scheme is generated based on the deviation value of the temperature rise deviation component; When the temperature rise deviation component does not allow independent temperature reduction, a combined temperature control scheme set is obtained based on the temperature rise deviation data; Performing a cooling cost evaluation on the combined temperature control scheme set, and outputting a cooling cost evaluation result; Selecting a combined temperature control scheme corresponding to the lowest cooling cost in the cooling cost evaluation results to perform feedback optimization control of the target outer rotor permanent magnet motor; Component warning data is obtained through the component temperature rise constraint standard value and the actual temperature rise data, the temperature control scheme is corrected based on the component warning data, and feedback optimization control of the target outer rotor permanent magnet motor is performed based on the corrected temperature control scheme.

2. The method according to claim 1, characterized in that The method further comprises: Obtaining a component temperature rise rate parameter according to the actual temperature rise data; Obtaining a temperature rise warning component through the component temperature rise constraint standard value and the actual temperature rise data; The component warning data is obtained based on the temperature rise rate parameter and the temperature rise warning component.

3. The method according to claim 2, characterized in that The method further comprises: Obtaining a temperature control hysteresis estimate value of the temperature rise warning component according to the temperature control scheme; Performing temperature prediction of the temperature rise warning component based on the temperature control hysteresis estimation value and the temperature rise rate parameter to obtain a temperature prediction result; It is determined whether the temperature prediction result is within the temperature rise constraint standard value range. When the temperature prediction result is within the temperature rise constraint standard value range, no correction or adjustment is performed on the temperature control scheme.

4. The method according to claim 3, characterized in that The method further comprises: When the temperature prediction result is not within the temperature rise constraint standard value range, determining the allowable hysteresis value according to the temperature rise rate parameter and the temperature rise constraint standard value; The component warning data is generated based on the allowable hysteresis value.

5. The method according to claim 4, characterized in that The method further comprises: Set the allowable range of component temperature control error; Adjusting the allowable hysteresis value based on the allowable range of the component temperature control error to obtain an adjusted allowable hysteresis value; The component warning data is generated by the adjustment permission hysteresis value.

6. An outer rotor permanent magnet motor control system based on feedback optimization, the system is used to execute the method according to any one of claims 1 to 5, characterized in that: The system comprises: A basic information acquisition module is used to acquire basic information of the target outer rotor permanent magnet motor; A temperature rise constraint generation module, used to perform temperature rise constraints on components of the target outer rotor permanent magnet motor according to the basic information, and obtain component temperature rise constraint standard values; An experimental parameter fitting module, used to collect actual working environment data and fit experimental environment parameters based on the actual working environment data; An experimental data acquisition module, used to perform experimental fitting on the target outer rotor permanent magnet motor through the experimental environment parameters to obtain experimental temperature rise data; An actual data acquisition module is used to place the target outer rotor permanent magnet motor in an actual working environment, perform experimental parameter control, and perform real-time temperature rise data acquisition through a temperature acquisition device to obtain actual temperature rise data; A temperature control scheme generating module, used to obtain temperature rise deviation data based on the actual temperature rise data and the experimental temperature rise data, and to correct the heat dissipation scheme based on the temperature rise deviation data to obtain a temperature control scheme; A temperature control scheme optimization module is used to obtain component warning data through the component temperature rise constraint standard value and the actual temperature rise data, correct the temperature control scheme based on the component warning data, and perform feedback optimization control of the target outer rotor permanent magnet motor based on the corrected temperature control scheme.

Images