Fan system dynamic balance control method, device and equipment and storage medium

Abstract

The application discloses a dynamic balance control method, device and equipment of a fan system and a storage medium, wherein the fan system comprises an impeller, at least two electromagnets, a pressure sensor arranged at the bottom of any one of the electromagnets, and a base arranged at the bottom of the remaining electromagnets, the base has the same height as the pressure sensor, and the dynamic balance control method comprises the following steps: acquiring at least one historical pressure value and at least one current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller; judging whether the absolute value of the difference between any historical pressure value and any current pressure value is greater than or equal to a preset pressure value, and if yes, adjusting the input current value of the at least one electromagnet. In the application, the input current of the electromagnet is adjusted according to the comparison result of the absolute value of the difference between the historical pressure value and the current pressure value corresponding to the current rotating speed and the preset pressure value during the operation of the fan system, so that the impeller of the fan system reaches dynamic balance, and the calibration efficiency of dynamic balance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fan control, in particular to a dynamic balance control method, device and equipment of a fan system and a storage medium. BACKGROUND

[0002] Household appliances such as range hoods, fan impellers will be calibrated before installation and factory, so that the dynamic balance is kept within a reasonable range. But after the product is installed, with the use of time, the oil pollution of the impeller or the wear of the impeller itself and other factors will cause the dynamic imbalance of the fan impeller to gradually increase. At present, there is no good calibration method for the dynamic imbalance of the working fan impeller. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the defect that the fan cannot realize timely impeller dynamic balance calibration in the prior art, and to provide a dynamic balance control method, device, equipment and storage medium of a fan system.

[0004] The present application solves the above technical problems by the following technical solutions:

[0005] The present application provides a dynamic balance control method of a fan system in the first aspect, the fan system comprising an impeller, at least two electromagnets, a pressure sensor arranged at the bottom of any one of the electromagnets, and a base arranged at the bottom of the remaining electromagnets, the base having the same height as the pressure sensor, the dynamic balance control method comprising:

[0006] obtaining at least one historical pressure value and at least one current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller;

[0007] determining whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to a preset pressure value, and if so, adjusting the input current value of at least one electromagnet to make the impeller of the fan system reach dynamic balance.

[0008] Preferably, before the step of obtaining at least one historical pressure value and at least one current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller, the dynamic balance control method further comprises:

[0009] under the condition that the input current values of the at least two electromagnets remain unchanged, collecting the historical pressure value of the pressure sensor corresponding to at least one initial rotating speed of the impeller every interval of a preset time to obtain the at least one historical pressure value.

[0010] Preferably, the step of adjusting the input current value of at least one electromagnet to make the impeller of the fan system reach dynamic balance comprises:

[0011] adjusting an input current value of an electromagnet of the pressure sensor to obtain a first input current value;

[0012] determining whether the first input current value is greater than a first preset current value, if not, re-executing the step of determining whether an absolute value of a difference between an arbitrary historical pressure value and an arbitrary current pressure value is greater than or equal to a preset pressure value, and if yes, adjusting input current values of the remaining electromagnets;

[0013] determining whether the adjusted input current values of the remaining electromagnets are greater than the first preset current value, if not, re-executing the step of determining whether an absolute value of a difference between an arbitrary historical pressure value and an arbitrary current pressure value is greater than or equal to a preset pressure value, and if yes, outputting a prompt information of cleaning the impeller.

[0014] Preferably, the dynamic balance control method further comprises:

[0015] if it is determined that the absolute value of the difference between the arbitrary historical pressure value and the arbitrary current pressure value is less than the preset pressure value, determining that the impeller of the fan system reaches dynamic balance, and storing the input current values of the at least two electromagnets corresponding to the impeller of the fan system in a dynamic balance state.

[0016] The second aspect of the present application provides a dynamic balance control device of a fan system, the fan system comprising an impeller and at least two electromagnets, a pressure sensor being arranged at the bottom of each of the electromagnets, and a base being arranged at the bottom of each of the remaining electromagnets, the base having the same height as the pressure sensor, the dynamic balance control device comprising an acquisition module, a determination module and an adjustment module.

[0017] The acquisition module is configured to acquire at least one historical pressure value and at least one current pressure value of the pressure sensor corresponding to a current rotating speed of the impeller.

[0018] The determination module is configured to determine whether an absolute value of a difference between an arbitrary historical pressure value and an arbitrary current pressure value is greater than or equal to a preset pressure value, and if yes, call the adjustment module.

[0019] The adjustment module is configured to adjust an input current value of at least one of the electromagnets, so that the impeller of the fan system reaches dynamic balance.

[0020] Preferably, the dynamic balance control device further comprises an acquisition module.

[0021] The acquisition module is configured to acquire a historical pressure value of the pressure sensor corresponding to at least one initial rotating speed of the impeller every preset time interval under the condition that the input current values of the at least two electromagnets remain unchanged, so as to obtain the at least one historical pressure value.

[0022] Preferably, the adjusting module comprises a first adjusting unit, a first judging unit, a second adjusting unit, a second judging unit and an output unit.

[0023] The first adjusting unit is configured to adjust an input current value of an electromagnet for setting the pressure sensor to obtain a first input current value.

[0024] The first judging unit is configured to judge whether the first input current value is greater than a first preset current value, if not, the judging module is called again, and if yes, the second adjusting unit is called.

[0025] The second adjusting unit is configured to adjust input current values of the remaining electromagnets.

[0026] The second judging unit is configured to judge whether the input current values of the remaining electromagnets after adjustment are greater than the first preset current value, if not, the judging module is called again, and if yes, the output unit is called.

[0027] The output unit is configured to output prompt information for cleaning the impeller.

[0028] Preferably, the dynamic balance control device further comprises a storage module.

[0029] The storage module is configured to determine that the impeller of the fan system reaches dynamic balance if it is judged that an absolute value of a difference between any one historical pressure value and any one current pressure value is less than the preset pressure value, and store input current values of the at least two electromagnets corresponding to the impeller of the fan system reaching dynamic balance state.

[0030] The third aspect of the present application provides an electronic device comprising a memory, a processor and a computer program stored in the memory and used for running on the processor, and the processor executes the computer program to realize the dynamic balance control method of the fan system according to the first aspect.

[0031] The fourth aspect of the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the dynamic balance control method of the fan system according to the first aspect.

[0032] On the basis of common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, to obtain each preferred example of the present application.

[0033] The positive progress effect of the present application is that:

[0034] The application adjusts the input current of the at least one electromagnet by comparing the absolute value of the difference between the historical pressure value and the current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller with the preset pressure value during the operation of the fan system, so as to calibrate the dynamic balance of the impeller by controlling the magnetic force between the electromagnet and the impeller, so that the impeller of the fan system reaches dynamic balance, and the calibration efficiency of dynamic balance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The structure diagram of the fan system of the embodiment 1 and 2 of the application.

[0036] Figure 2 The first flow chart of the dynamic balance control method of the fan system of the embodiment 1 of the application.

[0037] Figure 3 The second flow chart of the dynamic balance control method of the fan system of the embodiment 1 of the application.

[0038] Figure 4 The module diagram of the dynamic balance control device of the fan system of the embodiment 2 of the application.

[0039] Figure 5 The structure diagram of the electronic device for implementing the dynamic balance control method of the fan system of the embodiment 3 of the application. DETAILED DESCRIPTION

[0040] The application will be further described by way of examples below, but the application is not limited to the scope of the examples.

[0041] Embodiment 1

[0042] The dynamic balance control method of the fan system provided in the embodiment includes the following steps: Figure 1 As shown in the figure, the fan system includes an impeller 1, a first electromagnet 2, a second electromagnet 3, an air inlet ring 4, a volute 5, a hand nut 6, a motor 7 for driving the rotation of the impeller 1, a pressure sensor 8 arranged at the bottom of the first electromagnet 2, and a base 9 arranged at the bottom of the second electromagnet 3. It should be noted that the first electromagnet 2 is fixed inside the volute 5 at a certain distance from the impeller 1, and the second electromagnet 3 is distributed at an interval of 180° in the circumferential direction of the volute 5. The material of the impeller 1 is galvanized sheet, and in addition, the model specifications of each electromagnet are the same. Figure 2 The dynamic balance control method includes the following steps:

[0043] Step 101, obtaining at least one historical pressure value and at least one current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller;

[0044] Step 102, judging whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to a preset pressure value, if yes, executing step 103, if not, executing step 104;

[0045] In the embodiment, the preset pressure value is set according to actual conditions, which is not specifically limited here.

[0046] Step 103, adjusting the input current value of the at least one electromagnet so that the impeller of the fan system reaches dynamic balance.

[0047] Step 104, determining that the impeller of the fan system reaches dynamic balance, and storing the input current values of the at least two electromagnets corresponding to the state in which the impeller of the fan system reaches dynamic balance.

[0048] In the embodiment, when the impeller reaches dynamic balance, the input current values of the at least two electromagnets are updated, so that the calibration target of the impeller can be quickly reached after the next start of the range hood, and the calibration speed of the impeller is improved.

[0049] It should be noted that the fan system of the present application is not only suitable for range hoods, but also suitable for other devices that can use the fan system.

[0050] The embodiment can calibrate the dynamic balance of the impeller of the fan system in real time during the use of the user, without separately performing the dynamic balance calibration process of the impeller; it is suitable for different installation states (for example, horizontal, vertical, inclined, etc.) of the impeller of the fan system and different reasons (for example, oil stains, solid particles, impeller wear, etc.), has a wider application range, and has a better calibration effect.

[0051] As an optional embodiment, as shown in Figure 3 Before step 101, the dynamic balance control method further includes:

[0052] Step 100, under the condition that the input current values of the at least two electromagnets remain unchanged, collecting a historical pressure value of the pressure sensor corresponding to at least one initial rotating speed of the impeller every interval of a preset time, to obtain at least one historical pressure value.

[0053] In the embodiment, the preset time is set according to actual conditions, which is not specifically limited here.

[0054] As an optional embodiment, step 103 includes:

[0055] Step 1031, adjusting the input current value of the electromagnet setting the pressure sensor to obtain a first input current value;

[0056] Step 1032, judging whether the first input current value is greater than the first preset current value, if not, re-executing step 102; if yes, executing step 1033;

[0057] Step 1033, adjusting the input current value of the remaining electromagnet;

[0058] Step 1034, judging whether the input current value of the remaining electromagnet after adjustment is greater than the first preset current value, if not, re-executing step 102; if yes, executing step 1035;

[0059] Step 1035, outputting the prompt information of cleaning the impeller.

[0060] In the specific implementation process, two electromagnets are taken as an example, professional equipment is used to calibrate the dynamic balance of the impeller, and it is ensured that the dynamic balance of the impeller in the initial installation state of the user meets the requirements; specifically, the range hood is opened, the current state of the impeller speed n1 (i.e. the initial speed of the impeller) is read, and the time t1 required by the impeller to rotate 1° (i.e. 1 degree) at this time is 1 / (360*n1); the input current values of the two electromagnets (for example, the first electromagnet 2 and the second electromagnet 3) are both I1, the interval time T1 is collected (T1=t1*360 / N1, and 360 / N1 is an integer), the pressure value f1 of the pressure sensor is collected every T1 time, and N1 pressure values (for example, f 11 21 31 …… / f N11 ) output by the pressure sensor are read; N1 pressure values can be recorded as N1 historical pressure values; according to the above method, the input current values of the two electromagnets are kept as I1, the impeller speeds n1-n m of the user's commonly used gears are read and recorded, and m pressure values (f 11 21 31 …… / f N11 ), (f 12 22 32 …… / f N22 ), ……(f 1m 2m 3m …… / f Nmm ) output by the pressure sensor are read when the impeller rotates at m speeds; the above initial data is pre-stored in the controller of the range hood (for example, the pressure value f1 of the pressure sensor is collected every T1 time, and N1 pressure values (for example, f 11 21 31 …… / f N11 ​​​​​​​​​​Read and record the impeller speed n1-n for commonly used gears. m When there are m impeller speeds, the pressure sensor outputs m pressure values ​​(f) 11 / f 21 / f 31 / …… / f N11 ), (f 12 / f 22 / f 32 / …… / f N22 ), ... (f 1m / f 2m / f 3m / …… / f Nmm All data are stored in the controller to form at least one historical pressure value; the status of the range hood is monitored; it is determined whether the range hood is working; if not, the monitoring of the range hood status continues; if so, the current impeller speed n is read. j Retrieve at least one historical pressure value (f) stored at the current speed. 1j / f 2j / f 3j / …… / f Njj Read the current rotational speed n of the impeller. j The corresponding pressure sensor's N j Current pressure value (f) 1j ' / f 2j ' / f 3j ' / …… / f Njj '); Determine whether the absolute value of the difference between any historical pressure value and any current pressure value is greater than or equal to a preset pressure value, that is, determine whether any |f ij '-f kj | Is it greater than or equal to the preset pressure value ε (where i = 1, 2, 3…N)? j ';k=1,2,3…N j If ε is a constant, then mark the current rotational speed n of the impeller. j The corresponding pressure sensor's N j The largest current pressure value f among the current pressure values. ij ' (max) Data collection time point t i , in t i ±90°*1 / (360°*n i The input current value of the first electromagnet 2 during the time period is I2 = I1 - I0. In [t... i +90°*1 / (360°*n i ), 270°*1 / (360°*n i) time, the input current value I3 of the first electromagnet 2 is I1-I0. The input current value of the first electromagnet 2 is adjusted according to the change trend of the input current value I2 to the input current value I3, specifically, if the input current value I3 is greater than the input current value I2, the input current value of the first electromagnet 2 is reduced; if the input current value I3 is less than the input current value I2, the input current value of the first electromagnet 2 is increased; whether the adjusted input current value I1 of the first electromagnet 2 exceeds the preset input current value is judged, if not, the step of judging whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to the preset pressure value is re-executed; if yes, the prompt information of cleaning the impeller is outputted at t i +90°*1 / (360°*n i ) time period, the input current value I2' of the second electromagnet 3 is I1+I0. In the time period of [t i +90°*1 / (360°*n i ), 270°*1 / (360°*n i ) time, the input current value I3' of the second electromagnet 3 is I1-I0, and the input current value of the second electromagnet 3 is adjusted according to the change trend of the input current value I2' to the input current value I3', specifically, if the input current value I3' is greater than the input current value I2', the input current value of the second electromagnet 3 is reduced; if the input current value I3' is less than the input current value I2', the input current value of the second electromagnet 3 is increased; whether the adjusted input current value I1 of the second electromagnet 3 exceeds the preset input current value is judged, if not, the step of judging whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to the preset pressure value is re-executed; if yes, the prompt information of cleaning the impeller is outputted. It should be noted that I0 and I0' are both fixed current values. When the adjustment effect of the first electromagnet 2 is limited, the input current value of the second electromagnet 3 is simultaneously adjusted to calibrate the dynamic balance of the impeller, and the input current value of the third electromagnet 41 is simultaneously adjusted when the adjustment effect of the second electromagnet 3 is limited, and the input current value of the a-th electromagnet a is simultaneously adjusted when the adjustment effect of the a-1-th electromagnet a-1 is limited to calibrate the dynamic balance of the impeller.

[0061] In addition, since the material of the impeller is galvanized sheet, it has paramagnetism by itself, the magnetism of the electromagnet is excited, the dynamic balance of the impeller is calibrated by controlling the electromagnetic force between the electromagnet and the impeller, and the electromagnetic force between the electromagnet and the impeller is equal to the pressure value of the pressure sensor minus the gravity value of the first electromagnet 2. By outputting the same electromagnetic force at the same height on both sides of the impeller 180°, the attractive force of the two ends to the impeller can be cancelled out, which theoretically does not affect the dynamic balance of the impeller.

[0062] For example, in the implementation process, when the impeller dynamic balance is poor, the physical model can be equivalent to a mass point m at a certain position of the impeller circumference, and the impeller runs at a certain speed. When the pressure value of the pressure sensor is the largest, it indicates that the electromagnetic force between the impeller and the first electromagnet 2 is the largest, that is, the distance between the impeller and the first electromagnet 2 is the closest, that is, the mass point m is considered to reach the circumference where the first electromagnet 2 is located. In the time interval of (-90°, 90°), the input current value of the first electromagnet 2 is reduced, that is, the electromagnetic force value is reduced, and in the time interval of (90°, 270°), the input current value of the first electromagnet 2 is increased, that is, the electromagnetic force value is increased, so as to achieve the purpose of calibrating the dynamic balance of the impeller.

[0063] The embodiment judges and calibrates the dynamic balance of the impeller through the electromagnetic force between the electromagnet and the impeller. Specifically, in the operation process of the fan system, the absolute value of the difference between the historical pressure value and the current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller is compared with the preset pressure value, and the input current of at least one electromagnet is adjusted to calibrate the dynamic balance of the impeller by controlling the magnetic force between the electromagnet and the impeller, so that the impeller of the fan system reaches the dynamic balance, and the calibration efficiency of the dynamic balance is improved.

[0064] Embodiment 2

[0065] The dynamic balance control device of the fan system provided in the embodiment includes an impeller, at least two electromagnets, a pressure sensor arranged at the bottom of any one of the electromagnets, and a base arranged at the bottom of the remaining electromagnets, wherein the base has the same height as the pressure sensor. For example, taking two electromagnets as an example, as shown in Figure 1 The fan system includes an impeller 1, a first electromagnet 2, a second electromagnet 3, an air inlet ring 4, a volute 5, a hand nut 6, a motor 7 for driving the impeller 1 to rotate, a pressure sensor 8 arranged at the bottom of the first electromagnet 2, and a base 9 arranged at the bottom of the second electromagnet 3. It should be noted that the first electromagnet 2 is fixed inside the volute 5 and has a certain distance from the impeller 1, the second electromagnet 3 is distributed at an interval of 180° in the circumferential direction of the volute 5, the material of the impeller 1 is galvanized sheet, and in addition, the model specifications of each electromagnet are the same. As shown in Figure 4 The dynamic balance control device includes an acquisition module 21, a judgment module 22, and an adjustment module 23.

[0066] The acquisition module 21 is configured to acquire at least one historical pressure value and at least one current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller.

[0067] The judgment module 22 is configured to judge whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to a preset pressure value. If yes, the adjustment module 23 is called.

[0068] In the embodiment, the preset pressure value is set according to actual conditions, which is not specifically limited here.

[0069] The adjusting module 23 is configured to adjust the input current value of the at least one electromagnet, so that the impeller of the fan system reaches dynamic balance.

[0070] As an optional implementation, as shown in Figure 4 The dynamic balance control device further comprises a storage module 25.

[0071] The storage module 25 is configured to determine that the impeller of the fan system reaches dynamic balance if it is determined that the absolute value of the difference between any one of the historical pressure values and any one of the current pressure values is less than the preset pressure value, and store the input current values of the at least two electromagnets corresponding to the state in which the impeller of the fan system reaches dynamic balance.

[0072] In the embodiment, when the impeller reaches dynamic balance, the input current values of the at least two electromagnets are updated, so that the calibration target of the impeller can be quickly reached after the range hood is started next time, and the calibration speed of the impeller is improved.

[0073] It should be noted that the fan system of the present application is not only applicable to range hoods, but also applicable to other devices that can use the fan system.

[0074] The embodiment can calibrate the dynamic balance of the impeller of the fan system in real time during the use of the user, without a separate dynamic balance calibration process of the impeller; it is applicable to different installation states (for example, horizontal, vertical, inclined, etc.) of the impeller of the fan system and different reasons (for example, oil stains, solid particles, impeller wear, etc.), has a wider application range, and has a better calibration effect.

[0075] As an optional implementation, as shown in Figure 4 The dynamic balance control device further comprises a collection module 24.

[0076] The collection module 24 is configured to collect the historical pressure value of the pressure sensor corresponding to at least one initial rotating speed of the impeller every interval of a preset time, so as to obtain at least one historical pressure value, under the condition that the input current values of the at least two electromagnets remain unchanged.

[0077] In the embodiment, the preset time is set according to actual conditions, which is not specifically limited here.

[0078] As an optional implementation, as shown in Figure 4 The adjusting module 23 comprises a first adjusting unit 231, a first judging unit 232, a second adjusting unit 233, a second judging unit 234, and an output unit 235.

[0079] The first adjusting unit 231 is configured to adjust an input current value of an electromagnet of the pressure sensor to obtain a first input current value.

[0080] The first judging unit 232 is configured to judge whether the first input current value is greater than a first preset current value. If not, the judging module 22 is called again. If yes, the second adjusting unit 233 is called.

[0081] The second adjusting unit 233 is configured to adjust input current values of the remaining electromagnets.

[0082] The second judging unit 234 is configured to judge whether the input current values of the remaining electromagnets after adjustment are greater than the first preset current value. If not, the judging module 22 is called again. If yes, the output unit 235 is called.

[0083] The output unit 235 is configured to output a prompt information of cleaning the impeller.

[0084] In the specific implementation process, two electromagnets are taken as an example, professional equipment is used to calibrate the impeller dynamic balance, and it is ensured that the impeller dynamic balance in the initial installation state of the user's home meets the requirements. Specifically, the range hood is opened, the current impeller speed n1 (i.e., the initial speed of the impeller) is read, and the time t1 required for the impeller to rotate 1° (i.e., 1 degree) at this time is 1 / (360*n1). The input current values of the two electromagnets (for example, the first electromagnet 2 and the second electromagnet 3) are kept as I1, the interval time T1 (T1=t1*360 / N1, and 360 / N1 is an integer) is collected, the pressure value f1 of the pressure sensor is collected every T1 time, and N1 pressure values (for example, f 11 21 31 N11 ) output by the pressure sensor are read. The N1 pressure values can be recorded as N1 historical pressure values. According to the above method, the input current values of the two electromagnets are kept as I1, the impeller speeds n1-n m of the user's commonly used gears are read and recorded, and m pressure values (f 11 21 31 N11 12 22 32 N22 1m 2m 3m Nmm ) output by the pressure sensor are read. The above initial data are pre-stored in the controller of the range hood (for example, the pressure value f1 of the pressure sensor is collected every T1 time, and N1 pressure values (for example, f​​​​​​​​​​​​​​11 / f 21 / f 31 / …… / f N11 Read and record the impeller speed n1-n for commonly used gears. m When there are m impeller speeds, the pressure sensor outputs m pressure values ​​(f) 11 / f 21 / f 31 / …… / f N11 ), (f 12 / f 22 / f 32 / …… / f N22 ), ... (f 1m / f 2m / f 3m / …… / f Nmm All data are stored in the controller to form at least one historical pressure value; the status of the range hood is monitored; it is determined whether the range hood is working; if not, the monitoring of the range hood status continues; if so, the current impeller speed n is read. j Retrieve at least one historical pressure value (f) pre-stored at the current speed. 1j / f 2j / f 3j / …… / f Njj Read the current rotational speed n of the impeller. j The corresponding pressure sensor's N j Current pressure value (f) 1j ' / f 2j ' / f 3j ' / …… / f Njj '); Determine whether the absolute value of the difference between any historical pressure value and any current pressure value is greater than or equal to a preset pressure value, that is, determine whether any |f ij '-f kj | Is it greater than or equal to the preset pressure value ε (where i = 1, 2, 3…N)? j ';k=1,2,3…N j If ε is a constant, then mark the current rotational speed n of the impeller. j The corresponding pressure sensor's N j The largest current pressure value f among the current pressure values. ij ' (max) Data collection time point t i , in t i ±90°*1 / (360°*n i The input current value of the first electromagnet 2 during the time period is I2 = I1 - I0. In [t... i +90°*1 / (360°*n i ), 270°*1 / (360°*ni ) time, the input current value I3 of the first electromagnet 2 is I1-I0. The input current value of the first electromagnet 2 is adjusted according to the change trend of the input current value I2 to the input current value I3, specifically, if the input current value I3 is greater than the input current value I2, the input current value of the first electromagnet 2 is reduced; if the input current value I3 is less than the input current value I2, the input current value of the first electromagnet 2 is increased; it is judged whether the input current value I1 of the first electromagnet 2 after adjustment exceeds the preset input current value, if not, the step of judging whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to the preset pressure value is re-executed; if yes, the prompt information of cleaning the impeller is outputted. It should be noted that I0 and I0' are both fixed current values. When the adjustment effect of the first electromagnet 2 is limited, the input current value of the second electromagnet 3 is started to be adjusted at the same time to calibrate the dynamic balance of the impeller, and the same is true for the third electromagnet 41 and the a-th electromagnet a. i ±90°*1 / (360°*n i ) time period, the input current value I2' of the second electromagnet 3 is I1+I0. In the time period of [t i +90°*1 / (360°*n i ), 270°*1 / (360°*n i ) time, the input current value I3' of the second electromagnet 3 is I1-I0, and the input current value of the second electromagnet 3 is adjusted according to the change trend of the input current value I2' to the input current value I3'. Specifically, if the input current value I3' is greater than the input current value I2', the input current value of the second electromagnet 3 is reduced; if the input current value I3' is less than the input current value I2', the input current value of the second electromagnet 3 is increased; it is judged whether the input current value I1 of the second electromagnet 3 after adjustment exceeds the preset input current value, if not, the step of judging whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to the preset pressure value is re-executed; if yes, the prompt information of cleaning the impeller is outputted. It should be noted that I0 and I0' are both fixed current values. When the adjustment effect of the first electromagnet 2 is limited, the input current value of the second electromagnet 3 is started to be adjusted at the same time to calibrate the dynamic balance of the impeller, and the same is true for the third electromagnet 41 and the a-th electromagnet a.

[0085] In addition, since the material of the impeller is galvanized sheet, it has paramagnetism by itself, the magnetism of the electromagnet is excited, the dynamic balance of the impeller is calibrated by controlling the electromagnetic force between the electromagnet and the impeller, and the electromagnetic force between the electromagnet and the impeller is equal to the pressure value of the pressure sensor minus the gravity value of the first electromagnet 2. By outputting the same electromagnetic force at the same height on both sides of the impeller 180°, the attractive force of the two ends to the impeller can be cancelled out, which theoretically does not affect the dynamic balance of the impeller.

[0086] For example, in the implementation process, when the impeller is unbalanced, a physical model can be equivalent to a mass point m at a certain position of the impeller circumference, and the impeller runs at a certain speed. When the pressure value of the pressure sensor is the largest, it indicates that the electromagnetic force between the impeller and the first electromagnet 2 is the largest, that is, the distance between the impeller and the first electromagnet 2 is the closest, that is, the mass point m is considered to reach the circumference where the first electromagnet 2 is located. In the time interval of (-90°, 90°), the input current value of the first electromagnet 2 is reduced, that is, the electromagnetic force value is reduced, and in the time interval of (90°, 270°), the input current value of the first electromagnet 2 is increased, that is, the electromagnetic force value is increased, so as to achieve the purpose of calibrating the dynamic balance of the impeller.

[0087] The embodiment adjusts the input current of at least one electromagnet by comparing the absolute value of the difference between the historical pressure value and the current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller in the operation process of the fan system with the preset pressure value, so as to calibrate the dynamic balance of the impeller by controlling the magnetic force between the electromagnet and the impeller, so that the impeller of the fan system reaches the dynamic balance, and the calibration efficiency of the dynamic balance is improved.

[0088] Embodiment 3

[0089] Figure 5 A structural schematic diagram of an electronic device provided for the embodiment 3 of the present application. The electronic device includes a memory, a processor, and a computer program stored in the memory and used for running on the processor, and the processor implements the dynamic balance control method of the fan system of the embodiment 1 when executing the program. Figure 5 The electronic device 30 shown is merely an example and should not impose any limitation on the function and use range of the embodiment of the present application.

[0090] As shown in Figure 5 The electronic device 30 can be in the form of a general computing device, for example, it can be a server device. The components of the electronic device 30 can include but are not limited to the above-mentioned at least one processor 31, the above-mentioned at least one memory 32, and a bus 33 connecting different system components including the memory 32 and the processor 31.

[0091] The bus 33 includes a data bus, an address bus, and a control bus.

[0092] The memory 32 can include a volatile memory, such as a random access memory (RAM) 321 and / or a cache memory 322, and can further include a read-only memory (ROM) 323.

[0093] The memory 32 can also include a program / utility 325 having a set (at least one) of program modules 324, including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which or a combination thereof, can include implementation of a network environment as in each of these examples or some combination thereof.

[0094] The processor 31 performs various function applications and data processing by running the computer program stored in the memory 32, such as the dynamic balancing control method of the fan system of the embodiment 1 of the present application.

[0095] The electronic device 30 can also communicate with one or more external devices 34 such as a keyboard, a pointing device, etc. through an input / output (I / O) interface 35. Further, the model generating device 30 can also communicate with one or more networks such as a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet, through a network adapter 36. As Figure 5 illustrated, the network adapter 36 communicates with the other modules of the model generating device 30 through the bus 33. It should be appreciated that although not shown, other hardware and / or software modules could be used in conjunction with the model generating device 30 including, but not limited to, microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc.

[0096] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the foregoing detailed description, such a division is merely exemplary and not mandatory. Indeed, according to the embodiments of the present application, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into several units / modules embodied.

[0097] Embodiment 4

[0098] The embodiment provides a computer readable storage medium, and the computer program is stored on the computer readable storage medium. The program is executed by the processor to realize the dynamic balancing control method of the fan system provided by the embodiment 1.

[0099] More specifically, the readable storage medium can include, but is not limited to, a portable disc, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0100] In possible implementation manners, the application can also be implemented in the form of a program product, which comprises program codes for causing a terminal device to execute the dynamic balancing control method of the fan system described in Embodiment 1 when the program product is run on the terminal device.

[0101] Wherein, the program codes for executing the application can be written in any combination of one or more programming languages, and can be executed completely on the user device, partially on the user device, as a separate software package, partially on the user device and partially on a remote device, or completely on a remote device.

[0102] Although the specific embodiments of the application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the application, and these changes and modifications all fall within the protection scope of the application.

Claims

1. A dynamic balancing control method of a fan system, characterized by, The fan system comprises an impeller, at least two electromagnets, a pressure sensor arranged at the bottom of any one of the electromagnets, and a base arranged at the bottom of the remaining electromagnets, the base having the same height as the pressure sensor, and the dynamic balance control method comprises the following steps: acquiring at least one historical pressure value and at least one current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller; judging whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to a preset pressure value, and if yes, adjusting the input current value of at least one of the electromagnets so that the impeller of the fan system reaches dynamic balance; the step of adjusting the input current value of at least one of the electromagnets so that the impeller of the fan system reaches dynamic balance comprises the following steps: adjusting the input current value of the electromagnet where the pressure sensor is arranged to obtain a first input current value; judging whether the first input current value is greater than a first preset current value, and if no, re-executing the step of judging whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to a preset pressure value, and if yes, adjusting the input current value of the remaining electromagnets; judging whether the input current value of the remaining electromagnets after adjustment is greater than the first preset current value, and if no, re-executing the step of judging whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to a preset pressure value, and if yes, outputting a prompt information for cleaning the impeller.

2. The dynamic balancing control method of a fan system according to claim 1, wherein Before the step of acquiring at least one historical pressure value and at least one current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller, the dynamic balance control method further comprises the following step: under the condition that the input current value of the at least two electromagnets remains unchanged, collecting the historical pressure value of the pressure sensor corresponding to at least one initial rotating speed of the impeller every interval of a preset time to obtain the at least one historical pressure value.

3. The dynamic balancing control method of a fan system according to claim 1, wherein The dynamic balance control method further comprises the following steps: if it is judged that the absolute value of the difference between any one historical pressure value and any one current pressure value is less than the preset pressure value, it is determined that the impeller of the fan system reaches dynamic balance, and the input current value of the at least two electromagnets corresponding to the state where the impeller of the fan system reaches dynamic balance is stored.

4. A dynamic balancing control device for a fan system, characterized by The fan system comprises an impeller, at least two electromagnets, a pressure sensor arranged at the bottom of any one of the electromagnets, and a base arranged at the bottom of the remaining electromagnets, the base having the same height as the pressure sensor, and the dynamic balance control device comprises an acquisition module, a judgment module and an adjustment module; the acquisition module is used for acquiring at least one historical pressure value and at least one current pressure value of the pressure sensor corresponding to the current rotating speed of the impeller; the judgment module is used for judging whether the absolute value of the difference between any one historical pressure value and any one current pressure value is greater than or equal to a preset pressure value, and if yes, calling the adjustment module; the adjustment module is used for adjusting the input current value of at least one of the electromagnets so that the impeller of the fan system reaches dynamic balance; The adjusting module comprises a first adjusting unit, a first judging unit, a second adjusting unit, a second judging unit and an output unit; The first adjusting unit is configured to adjust an input current value of an electromagnet of the pressure sensor to obtain a first input current value; The first judging unit is configured to judge whether the first input current value is greater than a first preset current value, and if not, the judging module is called again, and if yes, the second adjusting unit is called; The second adjusting unit is configured to adjust input current values of the remaining electromagnets; The second judging unit is configured to judge whether the input current values of the remaining electromagnets after adjustment are greater than the first preset current value, and if not, the judging module is called again, and if yes, the output unit is called; The output unit is configured to output prompt information for cleaning the impeller.

5. The dynamic balancing control device of a fan system according to claim 4, wherein The dynamic balance control device further comprises a collection module; The collection module is configured to collect historical pressure values of the pressure sensor corresponding to at least one initial rotating speed of the impeller every interval of a preset time under the condition that the input current values of the at least two electromagnets remain unchanged, to obtain at least one historical pressure value.

6. The dynamic balancing control device of the fan system according to claim 4, wherein The dynamic balance control device further comprises a storage module; The storage module is configured to determine that the impeller of the fan system reaches dynamic balance if the absolute value of the difference between any one historical pressure value and any one current pressure value is less than the preset pressure value, and to store input current values of the at least two electromagnets corresponding to the impeller of the fan system in a dynamic balance state.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory for running on the processor, characterized in that, The processor executes the computer program to implement the dynamic balance control method of the fan system according to any one of claims 1-3.

8. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the dynamic balance control method of the fan system according to any one of claims 1-3.

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