Baffle control method, device and air conditioning unit

Abstract

The application discloses a kind of air deflector control method, device and air conditioning unit, wherein the method comprises: when receiving air deflector opening instruction, the opening speed of left motor and the opening speed of right motor are determined;Wherein, the opening speed of left motor and the opening speed of right motor are different;According to the opening speed of left motor, the operation of left motor is controlled, and according to the opening speed of right motor, the operation of right motor is controlled.The application solves the problem of position mutation in the rotation process of air deflector of air conditioner in the prior art by the difference between the opening speed of left motor and the opening speed of right motor, realizes the smooth rotation of air deflector, effectively improves the precision of air deflector control, and improves the air outlet effect of air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, and in particular to a method and device for controlling an air deflector and an air conditioning unit. BACKGROUND

[0002] The air deflector is a main component of an air conditioner for sending air to a specified direction. The air deflector is linked to a stepping motor through a mechanical structure, and the air deflector is rotated by the stepping motor to adjust the angle and control the direction of the air.

[0003] The mechanical structure has a gap. The gap allows a certain space between the parts to adapt to the manufacturing error and wear during operation, thereby reducing friction and wear and prolonging the service life of the parts.

[0004] ‌The air deflector also has a gap. Due to the gap, when the stepping motor controls the movement of the air deflector, the sawtooth of the transmission device will push the air deflector to move. The gap is in front of the movement direction of the air deflector. When the air deflector moves through the critical position (i.e., the gravity balance point), the air deflector loses the limiting device (sawtooth) in front of the movement due to the action of gravity until the air deflector moves to the position of the limiting device. During this process, the position of the air deflector suddenly changes, which causes the sudden change of the air deflection angle, which is not conducive to control and use.

[0005] There is no effective solution to the problem of position mutation in the rotation process of the air deflector of the related art air conditioner. SUMMARY

[0006] The present application provides a method and device for controlling an air deflector and an air conditioning unit to at least solve the problem of position mutation in the rotation process of the air deflector of the prior art air conditioner.

[0007] To solve the above technical problems, according to an aspect of an embodiment of the present application, a method for controlling an air deflector is provided. The air deflector is rotated by left and right motors installed on both sides. The method comprises: determining the opening speed of the left motor and the opening speed of the right motor when receiving an air deflector opening instruction; wherein the opening speed of the left motor and the opening speed of the right motor are different; controlling the operation of the left motor according to the opening speed of the left motor and controlling the operation of the right motor according to the opening speed of the right motor.

[0008] Further, after controlling the operation of the right motor according to the opening speed of the right motor, the method further comprises: detecting the running current of the left motor and the running current of the right motor; when the running current of the left motor is greater than the left motor current threshold or the running current of the right motor is greater than the right motor current threshold, controlling the current speed of the left motor to be consistent with the current speed of the right motor.

[0009] Further, after the current rotating speed of the left motor is controlled to be consistent with the current rotating speed of the right motor, the method further comprises: re-detecting the operating current of the left motor and the operating current of the right motor; calculating the operating current change rate of the left motor or the operating current change rate of the right motor; determining the current operating state of the air deflector according to the operating current change rate of the left motor or the operating current change rate of the right motor; wherein the current operating state of the air deflector at least comprises one of the following: an about-to-pass-balance state and a gap-increase state; and adjusting the rotating speed of the left motor and the rotating speed of the right motor according to the current operating state of the air deflector.

[0010] Further, calculating the operating current change rate of the left motor or the operating current change rate of the right motor comprises: detecting the operating phase of the air deflector; wherein the operating phase of the air deflector at least comprises: an opening phase and a closing phase; when the operating phase of the air deflector is the opening phase, calculating the operating current change rate of the right motor; when the operating phase of the air deflector is the closing phase, calculating the operating current change rate of the left motor; or, when the operating phase of the air deflector is the opening phase, calculating the operating current change rate of the left motor; and when the operating phase of the air deflector is the closing phase, calculating the operating current change rate of the right motor.

[0011] Further, the operating current change rate is calculated by: obtaining a current sampling period; wherein the difference between the opening rotating speed of the left motor and the opening rotating speed of the right motor is related to the current sampling period, and the greater the difference between the opening rotating speed of the left motor and the opening rotating speed of the right motor, the shorter the current sampling period; calculating the difference between every two adjacent sampling currents as a current change value; and calculating the difference between two adjacent current change values as the operating current change rate.

[0012] Further, determining the current operating state of the air deflector according to the operating current change rate of the left motor or the operating current change rate of the right motor comprises: when the operating current change rate of the left motor or the operating current change rate of the right motor is less than a first preset threshold, determining that the current operating state of the air deflector is the about-to-pass-balance state; and when the operating current change rate of the left motor or the operating current change rate of the right motor is greater than a second preset threshold, determining that the current operating state of the air deflector is the gap-increase state.

[0013] Further, the adjusting the rotating speed of the left motor and the rotating speed of the right motor according to the current operating state of the air deflector comprises: when the current operating state of the air deflector is the about-to-cross-balance state, simultaneously adjusting the rotating speed of the left motor and the rotating speed of the right motor to a first preset rotating speed; wherein the first preset rotating speed is the smaller one of the starting rotating speed of the left motor and the starting rotating speed of the right motor; when the current operating state of the air deflector is the gap-increasing state, simultaneously adjusting the rotating speed of the left motor and the rotating speed of the right motor to the starting rotating speed of itself, and when the operating current change rate of the left motor or the operating current change rate of the right motor is less than or equal to a third preset threshold, simultaneously adjusting the rotating speed of the left motor and the rotating speed of the right motor to a second preset rotating speed; wherein the second preset rotating speed is the larger one of the starting rotating speed of the left motor and the starting rotating speed of the right motor.

[0014] According to another aspect of the embodiment of the present application, there is provided an air deflector control device, wherein the air deflector is driven to rotate by a left motor and a right motor installed on two sides, the device comprising: a determination module configured to determine a starting rotating speed of the left motor and a starting rotating speed of the right motor when receiving an air deflector starting instruction; wherein the starting rotating speed of the left motor and the starting rotating speed of the right motor are different; and a control module configured to control the operation of the left motor according to the starting rotating speed of the left motor and control the operation of the right motor according to the starting rotating speed of the right motor.

[0015] According to still another aspect of the embodiment of the present application, there is provided an air conditioning unit comprising the air deflector control device as described above.

[0016] According to still another aspect of the embodiment of the present application, there is provided a storage medium comprising computer executable instructions for executing the air deflector control method as described above when executed by a computer processor.

[0017] In the present application, there is provided an air deflector control scheme, wherein based on a left motor and a right motor installed on two sides of the air deflector, the operation of the left motor and the right motor is controlled according to different starting rotating speeds when receiving an air deflector starting instruction. When the rotating speeds of the left motor and the right motor are inconsistent, the rotating speeds of the transmission devices of the left motor and the right motor will be different, the gap between the air deflector and the transmission device gear will be reduced, and the air deflector will be clamped by the gears of the left motor and the right motor. Therefore, when the air deflector moves through the critical position, it is limited by the transmission device gear, and the air deflection angle will not suddenly change, thereby controlling the air deflector to operate smoothly. Therefore, the air deflector control scheme in the present application effectively solves the problem of position mutation during the rotation of the air deflector, and the above control scheme realizes the smooth rotation of the air deflector without increasing the hardware structure, effectively improves the control precision of the air deflector, guarantees the accuracy of the air deflection angle, and improves the air outlet effect of the air conditioner. Attached Figure Description

[0018] Figure 1 This is an optional installation connection diagram of the air guide plate according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of an optional motion of two motors and a guide vane according to an embodiment of the present invention;

[0020] Figure 3 This is an optional control circuit diagram of the air guide plate according to an embodiment of the present invention;

[0021] Figure 4 This is an optional flowchart of the air guide plate control method according to an embodiment of the present invention;

[0022] Figure 5 This is another optional flowchart of the air guide plate control method according to an embodiment of the present invention;

[0023] Figure 6 This is another optional flowchart of the air guide plate control method according to an embodiment of the present invention;

[0024] Figure 7 This is an optional structural block diagram of the air guide plate control device according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Air guide plate; 2. Transmission device; 3. Left motor; 4. Right motor; 5. Gap; 6. Controller; 7. Driver chip; 8. Current detection point. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0028] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0029] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0030] It should be understood that although the terms first, second, third, etc., may be used to describe controllers in embodiments of the present invention, these controllers should not be limited to these terms. These terms are only used to distinguish controllers connected to different devices. For example, without departing from the scope of embodiments of the present invention, a first controller may also be referred to as a second controller, and similarly, a second controller may also be referred to as a first controller.

[0031] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0032] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0033] The optional embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Example 1

[0034] In a preferred embodiment 1 of the present invention, a method for controlling an air guide plate is provided. This method can be directly applied to various air guide plates or to other devices with air guide plate functions. Specifically, it can be implemented by installing software, an APP, or writing the corresponding program into the controller on the air conditioning unit or other devices.

[0035] Specifically Figure 1 The diagram shows one possible installation connection for the air guide plate, such as... Figure 1 As shown, the transmission device 2 can be a gear, and the teeth of the gear restrict the air guide plate 1, thereby driving the movement of the air guide plate 1.

[0036] Figure 2This diagram illustrates one possible motion configuration for two motors and a guide vane. Figure 2 The following description uses front views of the left motor 3 and the right motor 4 respectively. Figure 2 As shown, the air guide plate 1 is controlled simultaneously by two motors rotating in opposite directions, thus causing the air guide plate 1 to move in one direction. The following will use the terms "opening" and "closing" of the air guide plate 1 to indicate the direction of rotation. The left motor 3 and right motor 4 refer to the motor's mounting position, indicated by left and right. Figure 2 The gap position of the air guide plate is also shown, namely the gap 5 between the air guide plate 1 and the saw teeth of the gear. Due to the existence of this gap, when the air guide plate 1 passes the gravity balance point during the adjustment process, there will be a sudden change in the angle of the air guide plate 1, which is not conducive to the control and use of the air guide plate 1.

[0037] Figure 3 This diagram shows one possible control circuit for the air guide vane, such as... Figure 3 As shown, controller 6 is connected to drive chip 7, and drive chip 7 is connected to motor, which provides kinetic energy to the drive device. A current detection point 8 is installed between the motor and the controller to detect the motor's output current. The control scheme of this invention is based on the above control circuit. It does not require adding additional structures or improving existing structures. It only needs to detect the motor's output current and perform corresponding control based on the current to eliminate the control inaccuracy caused by the mechanical clearance of the air guide plate.

[0038] Based on the above structure Figure 4 An optional flowchart of the method is shown, such as Figure 4 As shown, the method includes the following steps S402-S404:

[0039] S402: Upon receiving the air guide plate opening command, determine the opening speeds of the left and right motors. The opening speeds of the left and right motors are different. For example, when opening the air guide plate, the left motor's initial rotation speed is V1 (excitation time T1), while the right motor's rotation speed is twice V1 (excitation time T1 / 2). This difference in speed causes the gap between the air guide plate and the transmission device to decrease, resulting in the air guide plate being clamped by the gears due to the speed difference between the two motors. The right motor's rotation speed is twice the left motor's rotation speed; other multiples can also be used, increasing the multiple according to the desired speed adjustment. A larger multiple results in a larger speed difference, leading to a faster reduction in the air guide plate gap.

[0040] S404: Control the operation of the left motor according to the starting speed of the left motor, and control the operation of the right motor according to the starting speed of the right motor.

[0041] In the above embodiments, a control scheme for the air guide plate is provided. Based on the left and right motors mounted on both sides of the air guide plate, when an air guide plate opening command is received, the operation of the left and right motors is controlled according to different opening speeds. When the operating speeds of the left and right motors are inconsistent, the speeds of the transmission devices of the left and right motors will be different, and the gap between the air guide plate and the transmission device gears will decrease, thus the air guide plate will be clamped by the gears of the left and right motors. Therefore, when the air guide plate moves through a critical position, it is limited by the transmission device gears, preventing abrupt changes in the air guiding angle and controlling the smooth operation of the air guide plate. Therefore, the air guide plate control scheme in this invention effectively solves the problem of abrupt changes in position during the rotation of the air guide plate. Moreover, the above control scheme achieves smooth rotation of the air guide plate without increasing the hardware structure, effectively improving the control accuracy of the air guide plate, ensuring the accuracy of the air outlet angle, and improving the air outlet effect of the air conditioner.

[0042] In a preferred embodiment of the invention, after controlling the operation of the right motor according to the starting speed of the right motor, the method further includes: detecting the operating current of the left motor and the right motor; when the operating current of the left motor is greater than the left motor current threshold or the operating current of the right motor is greater than the right motor current threshold, controlling the current speed of the left motor to be consistent with the current speed of the right motor. To prevent the air guide plate from being damaged by an excessive speed difference between the two motors, when either of the currents of the two motors is greater than its respective threshold (the detection threshold for the left motor is I_threshold1, and the detection threshold for the right motor is I_threshold2), the speeds will be synchronized. After speed synchronization, due to the change in angle during the rotation of the air guide plate, the gap between the air guide plate and the transmission device may increase. Therefore, the second stage of control is entered, using the current of the jogging motor to determine the state of the air guide plate for further control.

[0043] When a motor drives a load, its input power is voltage multiplied by current U*I. When the motor's output power increases, the input power also increases. At this point, U remains constant, but I changes with the power. By detecting the value of I, the motor's load condition can be understood. This invention analyzes the change in current to determine the gap between the air guide plates and then executes corresponding control strategies.

[0044] After controlling the current speed of the left motor to match the current speed of the right motor, the process includes: re-detecting the operating current of the left and right motors; calculating the rate of change of the operating current of the left or right motor; determining the current operating state of the air guide plate based on the rate of change of the operating current of the left or right motor; wherein the current operating state of the air guide plate includes at least one of the following: an impending over-balance state or an increased gap state; adjusting the speed of the left and right motors based on the current operating state of the air guide plate. The operating current of the motors is affected by the force between the air guide plate and the transmission device. The greater the force, the greater the current, and the smaller the force, the smaller the current. The force is determined by the angle of the air guide plate. The air guide plate experiences the least force when it is in the balance position, so the current sampling can be used to determine the position when it is about to pass through the balance position. In addition, when the gap increases, the air guide plate will vibrate, so the current can also be used to determine this.

[0045] Specifically, the current operating state of the air guide plate is determined based on the rate of change of the operating current of the left motor or the right motor. This includes: when the rate of change of the operating current of the left motor or the right motor is less than a first preset threshold, the current operating state of the air guide plate is determined to be an impending over-balance state; when the rate of change of the operating current of the left motor or the right motor is greater than a second preset threshold, the current operating state of the air guide plate is determined to be a state of increased gap. During the rotation of the air guide plate, the resistance experienced by the motor gradually decreases due to the change in the angle of the air guide plate. When the rate of change of the operating current is less than the first preset threshold, the air guide plate is about to over-balance. When the rate of change of the operating current is greater than the second preset threshold, the increased gap of the air guide plate will cause vibration. In summary, this invention uses the motor current to detect the state of the air guide plate for further control, thereby improving the accuracy of air guide plate control.

[0046] In the above embodiments, calculating the rate of change of the operating current of the left motor or the right motor includes: detecting the operating phase of the air guide plate; wherein the operating phase of the air guide plate includes at least an opening phase and a closing phase; when the air guide plate is in the opening phase, the rate of change of the operating current of the right motor is calculated, and when the air guide plate is in the closing phase, the rate of change of the operating current of the left motor is calculated; or, when the air guide plate is in the opening phase, the rate of change of the operating current of the left motor is calculated, and when the air guide plate is in the closing phase, the rate of change of the operating current of the right motor is calculated. To ensure the accuracy of the sampled current, different motor operating currents are used in the opening and closing phases respectively, to avoid the situation where the current sampling value of one motor is inaccurate or has a large error, thereby improving the accuracy of judgment and control.

[0047] Optionally, the rate of change of operating current is calculated as follows: The current sampling period is obtained; the difference between the starting speeds of the left and right motors is related to the current sampling period; the larger the difference, the shorter the current sampling period. The difference between two adjacent current samples is calculated as the current change value; the difference between two adjacent current change values ​​is calculated as the rate of change of operating current. As mentioned earlier, the rotation speed of the right motor is twice the rotation speed of the left motor. Other multiples can also be used, and the multiple can be increased according to the desired speed adjustment. A larger multiple results in a larger speed difference, and the gap of the air guide plate will decrease more quickly. However, too large a multiple can also have adverse effects; the faster the speed, the less time the controller has to react. Therefore, the frequency of current sampling needs to be increased; otherwise, inaccurate sampling will occur, leading to damage to the air guide plate. Therefore, for control accuracy and safety, the above multiple is often within a suitable range, which is determined based on a comprehensive consideration of control accuracy and actual hardware (chip performance, sampling circuit hardware structure, etc.).

[0048] In another preferred embodiment of the present invention, adjusting the speeds of the left and right motors according to the current operating state of the air guide plate includes: when the current operating state of the air guide plate is about to reach an over-balanced state, simultaneously adjusting the speeds of the left and right motors to a first preset speed; wherein, the first preset speed is the smaller of the starting speeds of the left and right motors; that is, when about to reach an over-balanced state, reducing the motor speeds to maintain the smooth rotation of the air guide plate. When the current operating state of the air guide plate is in a state of increased gap, simultaneously adjusting the speeds of the left and right motors to their own starting speeds until the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor is less than or equal to a third preset threshold, then simultaneously adjusting the speeds of the left and right motors to a second preset speed; wherein, the second preset speed is the larger of the starting speeds of the left and right motors. To avoid vibration, it is necessary to increase the speed difference between the two motors, simultaneously adjusting the speeds of the left and right motors to their own starting speeds to clamp the air guide plate and prevent sudden changes in the position of the air guide plate. Afterwards, once the rate of change of current decreases, the speed of both the left and right motors is simultaneously adjusted to the second preset speed, that is, the motor speed is increased, and the air guide plate is quickly adjusted to the required angle.

[0049] In a preferred embodiment 1 of the present invention, another method for controlling the air guide plate is also provided, specifically... Figure 5 This diagram illustrates an optional flowchart of the method, which is a control method for the opening process of the air guide vane, such as... Figure 5 As shown, the method includes the following steps S501-S513:

[0050] S501: Start;

[0051] S502: Receives command to open air deflector;

[0052] S503: The speed of the left motor is V1, and the speed of the right motor is 2×V1. When the air guide plate is opened, the speed of the left motor is V1 (excitation time is T1) and the speed of the right motor is 2 times V1 (excitation time is T1 / 2), which makes the two motors run at different speeds. This will cause the air guide plate to be clamped by the gears due to the speed difference between the two motors.

[0053] S504: Check if the left motor current I1 > I1 threshold or the right motor current I2 > I2 threshold. If yes, proceed to step S505; otherwise, proceed to step S503. To prevent the air guide plate from being damaged by the excessive speed difference between the two motors, the speed will be synchronized when the current of either motor is greater than its respective threshold (I threshold 1 and I threshold 2).

[0054] S505: The speed of the left motor is adjusted to 2×V1, i.e., V1=V2; both motors run at a speed of 2 times V1, and then enter the second stage of control;

[0055] S506: ||△In| - |△Il|| < △I threshold 1. If true, proceed to step S507; otherwise, re-enter step S506. In the second stage control, the current sampling period is t. Let △I = In – Il be the rate of change of the right motor, where In is the current at the current detection moment and Il is the current at the previous moment. △In is the difference calculated by the right motor this time (the difference between the current sampled current and the previous sampled current), and △Il is the difference calculated by the right motor last time (the difference between the previous sampled current and the sampled current two months ago).

[0056] S507: Adjust the speed of both left and right motors to V1. During adjustment, due to the change in the angle of the air guide plate, the resistance experienced by the motor will gradually decrease. Therefore, under normal circumstances, |△In|<|△Il|, and △In<0, △Il<0. When ||△In| - |△Il||< △I threshold 1, the air guide plate will be about to pass through the equilibrium state. At this time, adjust the speed of both left and right motors to V1 simultaneously (deceleration).

[0057] S508: Is |△In| - |△Il| > △I threshold 2 true? If yes, proceed to step S509; otherwise, proceed to step S507.

[0058] S509: The speed of the left motor is V1, and the speed of the right motor is 2×V1; When |△In| - |△Il| > △I threshold 2, the rate of change of speed is greater than a certain threshold. At this time, the gap of the air guide plate increases and vibration will occur. Therefore, it is necessary to further increase the speed difference to clamp the air guide plate. At this time, the speed of the right motor is adjusted to 2 times V1.

[0059] S510: Is |△In| - |△Il| <= △I threshold 3 true? If yes, proceed to step S511; otherwise, proceed to step S509.

[0060] S511: The speed of the left motor is adjusted to 2×V1, i.e., V1=V2; the motor speed is adjusted until |△In| - |△Il| <= △I threshold 3, then the speeds of both motors are synchronized to 2 times V1;

[0061] S512: When the air guide plate reaches the designated position, the left and right motors stop.

[0062] S513: End.

[0063] When the air deflector is closed, the adjustment method is the same as when it is open, but the left and right sides of the motors are reversed. See the control procedure below. Figure 6 ,like Figure 6 As shown, the method includes the following steps S601-S613:

[0064] S601: Start;

[0065] S602: Receives command to open air guide vane;

[0066] S603: The right motor speed is V1, and the left motor speed is 2×V1. When the air guide plate is opened, the right motor rotates at V1 (excitation time is T1) and the left motor rotates at twice V1 (excitation time is T1 / 2), which makes the two motors run at different speeds. This will cause the air guide plate to be clamped by the gears due to the speed difference between the two motors.

[0067] S604: Check if the left motor current I1 > I1 threshold or the right motor current I2 > I2 threshold. If yes, proceed to step S606; otherwise, proceed to step S603. To prevent the air guide plate from being damaged by the excessive speed difference between the two motors, the speed will be synchronized when the current of either motor is greater than its respective threshold (I threshold 1 and I threshold 2).

[0068] S605: The right motor speed is adjusted to 2×V1, i.e., V1=V2; both motors run at a speed of 2 times V1, and then enter the second stage of control;

[0069] S606: ||△In| - |△Il|| < △I threshold 1. If true, proceed to step S607; otherwise, re-enter step S606. In the second stage control, the current sampling period is t. Let △I = In – Il be the rate of change of the left motor, where In is the current at the current detection moment and Il is the current at the previous moment. △In is the difference calculated by the left motor this time (the difference between the current sampled current and the previous sampled current), and △Il is the difference calculated by the left motor last time (the difference between the previous sampled current and the sampled current two months ago).

[0070] S607: Adjust the speed of both left and right motors to V1. During adjustment, due to the change in the angle of the air guide plate, the resistance experienced by the motor will gradually decrease. Therefore, under normal circumstances, |△In| < |△Il|, and △In < 0, △Il < 0. When ||△In| - |△Il|| < △I threshold 1, the air guide plate will be about to pass through the equilibrium state. At this time, adjust the speed of both left and right motors to V1 simultaneously (deceleration).

[0071] S608: Is |△In| - |△Il| > △I threshold 2 true? If yes, proceed to step S609; otherwise, proceed to step S607.

[0072] S609: The speed of the right motor is V1, and the speed of the left motor is 2×V1; When |△In| - |△Il| > △I threshold 2, the rate of change of speed is greater than a certain threshold. At this time, the gap of the air guide plate increases and vibration will occur. Therefore, it is necessary to further increase the speed difference to clamp the air guide plate. At this time, the speed of the right motor is adjusted to 2 times V1.

[0073] S610: Is |△In| - |△Il| <= △I threshold 3 true? If yes, proceed to step S611; otherwise, proceed to step S609.

[0074] S611: The speed of the right motor is adjusted to 2×V1, i.e., V1=V2; the motor speed is adjusted until |△In| - |△Il| <= △I threshold 3, then the speeds of the two motors are synchronized to 2 times V1;

[0075] S612: When the air guide plate reaches the designated position, the left and right motors stop;

[0076] S613: End.

[0077] This invention optimizes the control of guide plate rotation in existing mechanical structures with existing gaps. Through software control, it solves the problem of sudden changes in the control of the guide plate caused by mechanical gaps during operation. It does not damage the hardware structure, does not affect the user's use, has low cost, good effect, and improves the reliability and accuracy of the guide plate operation. Example 2

[0078] Based on the air guide plate control method provided in Embodiment 1 above, a preferred embodiment 2 of the present invention further provides an air guide plate control device, specifically, Figure 7 An alternative structural block diagram of the device is shown, such as... Figure 7 As shown, the device includes:

[0079] The determining module 702 is used to determine the opening speed of the left motor and the opening speed of the right motor when the air guide plate opening command is received; wherein the opening speed of the left motor and the opening speed of the right motor are different.

[0080] The control module 704, connected to the determination module 702, is used to control the operation of the left motor according to the starting speed of the left motor, and to control the operation of the right motor according to the starting speed of the right motor.

[0081] In the above embodiments, a control scheme for the air guide plate is provided. Based on the left and right motors mounted on both sides of the air guide plate, when an air guide plate opening command is received, the operation of the left and right motors is controlled according to different opening speeds. When the operating speeds of the left and right motors are inconsistent, the speeds of the transmission devices of the left and right motors will be different, and the gap between the air guide plate and the transmission device gears will decrease, thus the air guide plate will be clamped by the gears of the left and right motors. Therefore, when the air guide plate moves through a critical position, it is limited by the transmission device gears, preventing abrupt changes in the air guiding angle and controlling the smooth operation of the air guide plate. Therefore, the air guide plate control scheme in this invention effectively solves the problem of abrupt changes in position during the rotation of the air guide plate. Moreover, the above control scheme achieves smooth rotation of the air guide plate without increasing the hardware structure, effectively improving the control accuracy of the air guide plate, ensuring the accuracy of the air outlet angle, and improving the air outlet effect of the air conditioner.

[0082] The device also includes a stabilization module, which, after controlling the operation of the right motor according to the starting speed of the right motor, detects the operating current of the left motor and the operating current of the right motor; when the operating current of the left motor is greater than the left motor current threshold or the operating current of the right motor is greater than the right motor current threshold, controls the current speed of the left motor to be consistent with the current speed of the right motor.

[0083] Furthermore, the device also includes a current control module, comprising: a current detection submodule, used to re-detect the operating current of the left motor and the right motor after controlling the current speed of the left motor to be consistent with the current speed of the right motor; a calculation submodule, used to calculate the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor; a determination submodule, used to determine the current operating state of the air guide plate based on the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor; wherein the current operating state of the air guide plate includes at least one of the following: an overbalanced state or a gap increase state; and an adjustment submodule, used to adjust the speed of the left motor and the speed of the right motor based on the current operating state of the air guide plate.

[0084] The calculation submodule includes: a detection unit for detecting the operating phase of the air guide plate; wherein the operating phase of the air guide plate includes at least an opening phase and a closing phase; and a calculation unit for calculating the operating current change rate of the right motor when the air guide plate is in the opening phase and the operating current change rate of the left motor when the air guide plate is in the closing phase, or calculating the operating current change rate of the left motor when the air guide plate is in the opening phase and the operating current change rate of the right motor when the air guide plate is in the closing phase.

[0085] Furthermore, the rate of change of operating current is calculated as follows: the current sampling period is obtained; the difference between the starting speed of the left motor and the starting speed of the right motor is related to the current sampling period, and the larger the difference between the starting speed of the left motor and the starting speed of the right motor, the shorter the current sampling period; the difference between every two adjacent current samples is calculated as the current change value; the difference between two adjacent current change values ​​is calculated as the rate of change of operating current.

[0086] The determination submodule includes: a first determination unit, used to determine that the current operating state of the air guide plate is an impending over-balance state when the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor is less than a first preset threshold; and a second determination unit, used to determine that the current operating state of the air guide plate is a gap increase state when the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor is greater than a second preset threshold.

[0087] The adjustment submodule includes: a first adjustment unit, used to simultaneously adjust the speed of the left motor and the speed of the right motor to a first preset speed when the current operating state of the air guide plate is about to be overbalanced; wherein the first preset speed is the smaller of the starting speed of the left motor and the starting speed of the right motor; and a second adjustment unit, used to simultaneously adjust the speed of the left motor and the speed of the right motor to their own starting speed when the current operating state of the air guide plate is in the state of increased gap, until the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor is less than or equal to a third preset threshold, and then simultaneously adjust the speed of the left motor and the speed of the right motor to a second preset speed; wherein the second preset speed is the larger of the starting speed of the left motor and the starting speed of the right motor.

[0088] Regarding the apparatus in the above embodiments, the specific manner in which each unit and module performs its operations has been described in detail in the embodiments related to the method, and will not be elaborated upon here. Example 3

[0089] Based on the air guide plate control device provided in Embodiment 2 above, an air conditioning unit is also provided in a preferred embodiment 3 of the present invention, including the air guide plate control device as described above.

[0090] In the above embodiments, a control scheme for the air guide plate is provided. Based on the left and right motors mounted on both sides of the air guide plate, when an air guide plate opening command is received, the operation of the left and right motors is controlled according to different opening speeds. When the operating speeds of the left and right motors are inconsistent, the speeds of the transmission devices of the left and right motors will be different, and the gap between the air guide plate and the transmission device gears will decrease, thus the air guide plate will be clamped by the gears of the left and right motors. Therefore, when the air guide plate moves through a critical position, it is limited by the transmission device gears, preventing abrupt changes in the air guiding angle and controlling the smooth operation of the air guide plate. Therefore, the air guide plate control scheme in this invention effectively solves the problem of abrupt changes in position during the rotation of the air guide plate. Moreover, the above control scheme achieves smooth rotation of the air guide plate without increasing the hardware structure, effectively improving the control accuracy of the air guide plate, ensuring the accuracy of the air outlet angle, and improving the air outlet effect of the air conditioner. Example 4

[0091] Based on the air guide plate control method provided in Embodiment 1 above, in the preferred embodiment 4 of the present invention, a storage medium containing computer-executable instructions is also provided, which, when executed by a computer processor, is used to execute the air guide plate control method as described above.

[0092] In the above embodiments, a control scheme for the air guide plate is provided. Based on the left and right motors mounted on both sides of the air guide plate, when an air guide plate opening command is received, the operation of the left and right motors is controlled according to different opening speeds. When the operating speeds of the left and right motors are inconsistent, the speeds of the transmission devices of the left and right motors will be different, and the gap between the air guide plate and the transmission device gears will decrease, thus the air guide plate will be clamped by the gears of the left and right motors. Therefore, when the air guide plate moves through a critical position, it is limited by the transmission device gears, preventing abrupt changes in the air guiding angle and controlling the smooth operation of the air guide plate. Therefore, the air guide plate control scheme in this invention effectively solves the problem of abrupt changes in position during the rotation of the air guide plate. Moreover, the above control scheme achieves smooth rotation of the air guide plate without increasing the hardware structure, effectively improving the control accuracy of the air guide plate, ensuring the accuracy of the air outlet angle, and improving the air outlet effect of the air conditioner.

[0093] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0094] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0095] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0096] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0097] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0098] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0099] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not invented by the invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0100] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for controlling an air guide plate, characterized in that, The air guide vane rotates via a left motor and a right motor mounted on both sides, the method comprising: Upon receiving the command to open the air guide plate, the opening speed of the left motor and the opening speed of the right motor are determined; wherein, the opening speed of the left motor and the opening speed of the right motor are different; The operation of the left motor is controlled according to the starting speed of the left motor, and the operation of the right motor is controlled according to the starting speed of the right motor. After controlling the operation of the right motor according to the starting speed of the right motor, the method further includes: The operating current of the left motor and the operating current of the right motor are detected; When the operating current of the left motor is greater than the left motor current threshold or the operating current of the right motor is greater than the right motor current threshold, the current speed of the left motor is controlled to be the same as the current speed of the right motor. After controlling the current speed of the left motor to be consistent with the current speed of the right motor, the method further includes: The operating current of the left motor and the operating current of the right motor are re-detected; Calculate the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor; The current operating state of the air guide plate is determined based on the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor; wherein, the current operating state of the air guide plate includes: an overbalanced state and a gap increase state; Adjust the speed of the left motor and the speed of the right motor according to the current operating status of the air guide plate.

2. The method according to claim 1, characterized in that, Calculating the rate of change of operating current of the left motor or the rate of change of operating current of the right motor includes: The operation phase of the air guide plate is detected; wherein the operation phase of the air guide plate includes at least an opening phase and a closing phase; When the operation phase of the air guide plate is the open phase, calculate the operating current change rate of the right motor; when the operation phase of the air guide plate is the closed phase, calculate the operating current change rate of the left motor; or, when the operation phase of the air guide plate is the open phase, calculate the operating current change rate of the left motor; when the operation phase of the air guide plate is the closed phase, calculate the operating current change rate of the right motor.

3. The method according to claim 1, characterized in that, The rate of change of the operating current is calculated as follows: Obtain the current sampling period; wherein, the difference between the starting speed of the left motor and the starting speed of the right motor is related to the current sampling period, and the greater the difference between the starting speed of the left motor and the starting speed of the right motor, the shorter the current sampling period; The difference between two consecutive sampled currents is calculated as the current change value. The difference between two consecutive current changes is calculated as the operating current change rate.

4. The method according to claim 1, characterized in that, Determining the current operating state of the air guide plate based on the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor includes: When the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor is less than a first preset threshold, the current operating state of the air guide plate is determined to be the state of impending over-balance. When the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor is greater than the second preset threshold, the current operating state of the air guide plate is determined to be the gap increase state.

5. The method according to claim 1, characterized in that, Adjusting the speed of the left motor and the speed of the right motor according to the current operating state of the air guide plate includes: When the current operating state of the air guide plate is the state of being about to be overbalanced, the speed of the left motor and the speed of the right motor are simultaneously adjusted to a first preset speed; wherein, the first preset speed is the smaller of the starting speed of the left motor and the starting speed of the right motor. When the current operating state of the air guide plate is the increased gap state, the speed of the left motor and the speed of the right motor are simultaneously adjusted to their own starting speeds until the rate of change of the operating current of the left motor or the rate of change of the operating current of the right motor is less than or equal to a third preset threshold. Then, the speed of the left motor and the speed of the right motor are simultaneously adjusted to a second preset speed. The second preset speed is the larger of the starting speed of the left motor and the starting speed of the right motor.

6. A wind deflector control device, characterized in that, The air guide vane rotates via a left motor and a right motor mounted on both sides. The device includes: The determining module is used to determine the opening speed of the left motor and the opening speed of the right motor when a command to open the air guide plate is received; wherein the opening speed of the left motor and the opening speed of the right motor are different. The control module is used to control the operation of the left motor according to the starting speed of the left motor, and to control the operation of the right motor according to the starting speed of the right motor; The stabilization module is used to detect the operating current of the left motor and the right motor after controlling the operation of the right motor according to the starting speed of the right motor; when the operating current of the left motor is greater than the left motor current threshold or the operating current of the right motor is greater than the right motor current threshold, it controls the current speed of the left motor to be consistent with the current speed of the right motor. The current control module includes: a current detection submodule, used to re-detect the operating current of the left motor and the right motor after the current speed of the left motor is consistent with the current speed of the right motor; a calculation submodule, used to calculate the rate of change of the operating current of the left motor or the right motor; a determination submodule, used to determine the current operating state of the air guide plate based on the rate of change of the operating current of the left motor or the right motor; wherein the current operating state of the air guide plate includes: an overbalanced state and a gap increase state; and an adjustment submodule, used to adjust the speed of the left motor and the right motor based on the current operating state of the air guide plate.

7. An air conditioning unit, characterized in that, Includes the air guide plate control device as described in claim 6.

8. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the air deflector control method as described in any one of claims 1 to 5.

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