Control method of air conditioner and air conditioner

Abstract

The application relates to the technical field of air conditioners, in particular to an air conditioner control method and an air conditioner. The application aims to solve the problem of how to reduce the overstep sound generated in the process of air deflector resetting. To this end, the application compares the actual power supply voltage of a stepping motor with the rated voltage of the stepping motor in the process of driving the air deflector to rotate by the stepping motor, determines the pulse correction coefficient of the stepping motor in the overstep resetting process based on the comparison result, determines the pulse time of the stepping motor in the overstep resetting process based on the pulse correction coefficient, and controls the stepping motor to run according to the determined pulse time in the overstep resetting process. Since the pulse time of the stepping motor is proportional to the output torque, the output torque of the stepping motor can be reduced, and the overstep sound generated in the overstep resetting process of the air deflector can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and particularly relates to a control method of an air conditioner and the air conditioner. BACKGROUND

[0002] At present, in the prior art, in order to increase the air supply range of an air conditioner and change the air supply direction of the air conditioner, an air outlet is provided with a guide vane driven to rotate by a stepping motor, and a user can control the position and angle of the guide vane through the air conditioner. Due to the characteristics of the stepping motor, the stepping motor needs to be reset every time the air conditioner is turned on and off to ensure that the position of the guide vane is accurate and does not deviate. However, this also causes the stepping motor to produce a step sound when driving the guide vane to reset, especially for the current special-shaped guide vane and super-large guide vane structures, which require a larger stepping motor to drive and a longer step time to ensure the guide vane to reset, resulting in a step sound problem when the air conditioner is turned on and off.

[0003] Correspondingly, there is a need in the art for a new technical solution to solve the above problems. SUMMARY

[0004] In order to solve at least one of the above problems in the prior art, that is, to solve the problem of reducing the step sound generated in the resetting process of the guide vane, the present application provides a control method of an air conditioner, the control method comprising:

[0005] During the rotation of the guide vane driven by the stepping motor, the actual power supply voltage V1 of the stepping motor is obtained;

[0006] The actual power supply voltage V1 of the stepping motor is compared with the rated voltage V2 of the stepping motor;

[0007] According to the comparison result, the pulse correction coefficient of the stepping motor in the step resetting process is determined;

[0008] Based on the pulse correction coefficient, the pulse time of the stepping motor in the step resetting process is controlled.

[0009] In the preferred technical solution of the above control method of the air conditioner, the step of "determining the pulse correction coefficient of the stepping motor in the step resetting process according to the comparison result" further comprises:

[0010] When V1≤V2, the pulse correction coefficient of the stepping motor is calculated by the following formula:

[0011] X=1-(V2-V1) / V2

[0012] Wherein X is the pulse correction coefficient of the stepping motor in the step resetting process.

[0013] In the preferred technical scheme of the control method of the air conditioner, the step of "controlling the pulse time of the stepping motor in the overstep reset process based on the pulse correction coefficient" further comprises:

[0014] When K1X≤K2, the pulse time of the stepping motor in the overstep reset process is calculated by the following formula:

[0015] T2=T1xA1

[0016] Wherein, T2 is the pulse time of the stepping motor in the overstep reset process, T1 is the pulse time of the stepping motor in the normal reset process, A1 is a coefficient, K1 is a first preset correction coefficient, and K2 is a second preset correction coefficient.

[0017] In the preferred technical scheme of the control method of the air conditioner, the step of "controlling the pulse time of the stepping motor in the overstep reset process based on the pulse correction coefficient" further comprises:

[0018] When X≤K1, the pulse time of the stepping motor in the overstep reset process is calculated by the following formula:

[0019] T2=int[T1xA1 / X].

[0020] In the preferred technical scheme of the control method of the air conditioner, 0

[0021] In the preferred technical scheme of the control method of the air conditioner, the step of "determining the pulse correction coefficient of the stepping motor in the overstep reset process according to the comparison result" further comprises:

[0022] When V1>V2, the overstep pulse correction coefficient of the stepping motor is calculated by the following formula:

[0023] X=1+(V1-V2) / V2

[0024] Wherein, X is the pulse correction coefficient of the stepping motor in the overstep reset process.

[0025] In the preferred technical scheme of the control method of the air conditioner, the step of "controlling the pulse time of the stepping motor in the overstep reset process based on the pulse correction coefficient" further comprises:

[0026] When K2X≤K3, the overstep pulse correction coefficient of the stepping motor is calculated by the following formula:

[0027] T2=T1xA1 / X.

[0028] In the preferred technical scheme of the control method of the air conditioner, the control method further comprises:

[0029] When X>K3, the overstep pulse correction coefficient of the stepper motor is calculated by the following formula:

[0030] T2=int[T1xA1 / (XxA2)].

[0031] In the preferred technical scheme of the control method of the air conditioner, 0

[0032] The application further provides an air conditioner comprising a controller configured to perform the control method of the air conditioner according to any of the preferred technical schemes.

[0033] The skilled in the art can understand that the control method of the air conditioner of the application comprises: obtaining an actual power supply voltage V1 of a stepper motor during driving a deflector to rotate; comparing the actual power supply voltage V1 of the stepper motor with a rated voltage V2 of the stepper motor; determining a pulse correction coefficient of the stepper motor during overstep resetting according to the comparison result; and controlling a pulse time of the stepper motor during overstep resetting based on the pulse correction coefficient, so as to reduce the output torque of the stepper motor and the overstep sound generated by the deflector during overstep resetting.

[0034] Further, the pulse correction coefficient of the stepper motor during overstep resetting is determined by the formula X=1-(V2-V1) / V2 when the actual power supply voltage of the stepper motor is less than or equal to the rated voltage, so as to improve the accuracy of the pulse time of the stepper motor during overstep resetting.

[0035] Further, when the pulse correction coefficient is greater than a first preset correction coefficient and less than or equal to a second preset correction coefficient, the pulse time of the stepper motor during overstep resetting is calculated by the formula T2=T1xA1, so that the stepper motor can work according to the pulse time, thereby reducing the overstep sound generated by the deflector during overstep resetting.

[0036] Further, when the pulse correction coefficient is less than or equal to the first preset correction coefficient, the pulse time of the stepper motor during overstep resetting is calculated, so that the stepper motor can work according to the pulse time, thereby reducing the overstep sound generated by the deflector during overstep resetting.

[0037] Further, by calculating the pulse correction system of the stepper motor in the overstep reset process when the actual supply voltage of the stepper motor is greater than the rated voltage, the accuracy of the pulse time of the stepper motor in the overstep reset process can be improved.

[0038] Further, when the pulse correction coefficient is greater than the second preset correction coefficient and less than or equal to the third preset correction coefficient, the pulse time of the stepper motor in the overstep reset process is calculated, so that the stepper motor can work according to the pulse time, thereby reducing the overstep sound generated by the guide vane in the overstep reset process.

[0039] Further, when the pulse correction coefficient is greater than the third preset correction coefficient, the pulse time of the stepper motor in the overstep reset process is calculated, so that the stepper motor can work according to the pulse time, thereby reducing the overstep sound generated by the guide vane in the overstep reset process. BRIEF DESCRIPTION OF DRAWINGS

[0040] The control method of the air conditioner of the present application is described below with reference to the accompanying drawings. In the drawings:

[0041] Figure 1 The flowchart of the control method of the recreational vehicle air conditioner of the present application;

[0042] Figure 2 The logic diagram of one possible embodiment of the control method of the recreational vehicle air conditioner of the present application. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. For example, although the present embodiments are introduced in combination with recreational vehicles, this is not intended to limit the protection scope of the present application. Those skilled in the art can apply the present application to other application scenarios without deviating from the principles of the present application, as long as the vehicle has an air conditioner. For example, transport trucks or buses, etc.

[0044] Firstly, referring to Figure 1 and Figure 2 , the control method of the recreational vehicle air conditioner of the present application is described. Among them, Figure 1 The flowchart of the control method of the recreational vehicle air conditioner of the present application; Figure 2 The logic diagram of one possible embodiment of the control method of the recreational vehicle air conditioner of the present application.

[0045] The current motor home air conditioner includes a guide vane arranged at an air outlet, and the guide vane is driven by a stepping motor. The guide vane needs to be reset each time the air conditioner is turned on or off. In order to ensure the accurate position of the guide vane without deviation, the number of steps of the stepping motor is usually designed to be more than the number of steps required for the normal closing of the guide vane. For example, when the guide vane is from an angle A of a fully open state to an angle B of a fully closed state, the number of steps of the stepping motor required for the normal closing of the guide vane is B1, and in order to ensure the closing of the guide vane, an overstep number B2 is additionally set on the basis of the normal closing number B1, that is, when the guide vane is from the angle A of the fully open state to the angle B of the fully closed state, the number of steps of the stepping motor is B1+B2. This causes the guide vane to generate an overstep sound during the overstep reset process.

[0046] As Figure 1 In order to solve the problem of how to reduce the overstep sound generated during the reset process of the guide vane, the application provides a control method of an air conditioner, the control method comprising:

[0047] S101, during the rotation of the guide vane driven by the stepping motor, the actual power supply voltage V1 of the stepping motor is obtained. For example, the air conditioner can be configured with a circuit or component for obtaining the voltage, and the actual power supply voltage V1 of the stepping motor is detected through the circuit or component.

[0048] S102, the actual power supply voltage V1 of the stepping motor is compared with the rated voltage V2 of the stepping motor. For example, after detecting the actual power supply voltage V1 of the stepping motor, the size of the actual power supply voltage V1 and the rated voltage V2 is compared by comparing whether the difference between the actual power supply voltage V1 and the rated voltage V2 is greater than 0 or whether the ratio between the two is greater than 1, so as to determine the pulse correction coefficient of the stepping motor in the overstep reset process.

[0049] S103, the pulse correction coefficient of the stepping motor in the overstep reset process is determined according to the comparison result. For example, after obtaining the size of the actual power supply voltage V1 of the stepping motor and the rated voltage V2 of the stepping motor, the pulse correction coefficient of the stepping motor in the overstep reset process can be determined according to the size relationship between the two.

[0050] S104, the pulse time of the stepping motor in the overstep reset process is determined based on the pulse correction coefficient. For example, after the pulse correction coefficient is determined, the pulse time of the stepping motor in the overstep reset process can be determined according to the range of the pulse correction coefficient.

[0051] S105, the stepping motor is controlled to operate according to the pulse time in the overstep reset process. For example, after the pulse time is determined, the stepping motor is controlled to operate according to the pulse time in the overstep reset process.

[0052] The application compares the actual supply voltage of the stepping motor with the rated voltage of the stepping motor during the rotation of the air deflector driven by the stepping motor, determines the pulse correction coefficient of the stepping motor during the overstep reset process based on the comparison result, determines the pulse time of the stepping motor during the overstep reset process based on the pulse correction coefficient, and controls the stepping motor to run according to the determined pulse time during the overstep reset process. Since the pulse time of the stepping motor is proportional to the output torque, the output torque of the stepping motor can be reduced, and the overstep sound generated by the air deflector during the overstep reset process is reduced.

[0053] The preferred embodiment of the control method of the air conditioner is described below. The actual supply voltage of the stepping motor is V1, the rated voltage of the stepping motor is V2, the number of steps of the stepping motor during the normal closing process of the air deflector is B1, the number of steps of the stepping motor during the overstep reset process of the air deflector is B2, the pulse time of the stepping motor during the normal closing process of the air deflector is T2, and the pulse time of the stepping motor during the overstep closing process of the air deflector is T1.

[0054] In one embodiment, the step of "determining the pulse correction coefficient of the stepping motor during the overstep reset process according to the comparison result" further comprises:

[0055] When V1≤V2, the pulse correction coefficient of the stepping motor is calculated by the following formula:

[0056] X=1-(V2-V1) / V2 (1)

[0057] In formula (1), X is the pulse correction coefficient of the stepping motor during the overstep reset process.

[0058] For example, the actual supply voltage of the stepping motor is V1, and the rated voltage of the stepping motor is 36V. When V1≤36V, the actual supply voltage of the stepping motor is relatively low, and the pulse correction coefficient of the stepping motor is calculated according to formula (1). Since V2 is greater than or equal to V1, the pulse correction coefficient X of the stepping motor calculated by formula (1) is less than or equal to 1. That is, when V1≤V2, the pulse correction coefficient X of the stepping motor during the overstep reset process is less than or equal to 1.

[0059] Further, the step of "controlling the pulse time of the stepping motor during the overstep reset process based on the pulse correction coefficient" further comprises:

[0060] When K1X≤K2, the pulse time of the stepping motor during the overstep reset process is calculated by the following formula:

[0061] T2=T1×A1 (2)

[0062] In the formula (2), T2 is the pulse time of the stepper motor in the overstep reset process, T1 is the pulse time of the stepper motor in the normal reset process, A1 is the coefficient, K1 is the first preset correction coefficient, and K2 is the second preset correction coefficient.

[0063] Specifically, 0 < A1 < 1.

[0064] For example, taking the first preset correction coefficient as 0.9, the second preset correction coefficient as 1, the coefficient A1 as 0.8, and the pulse time T1 of the stepper motor in the normal reset process of the air deflector as 1s as an example, when 0.9 < X ≤ 1, the pulse time of the stepper motor in the overstep reset process is calculated according to the formula (2), and according to the formula (2), the pulse time of the stepper motor in the overstep reset process is 0.8s, which is less than the pulse time in the normal reset process of the air deflector. Since the pulse time of the stepper motor is proportional to the output torque, the torque output by the stepper motor in the overstep reset process of the air deflector is reduced, thereby reducing the overstep sound generated in the overstep reset process of the air deflector. After the pulse time of the stepper motor in the overstep reset process is calculated, the stepper motor can be controlled to run according to the pulse time of 0.8s.

[0065] Further, the step of "controlling the pulse time of the stepper motor in the overstep reset process based on the overstep pulse correction coefficient" further includes:

[0066] When X ≤ K1, the pulse time of the stepper motor in the overstep reset process is calculated by the following formula:

[0067] T2 = int[T1 × A1 / X] (3).

[0068] Specifically, 0 < A1 < 1.

[0069] For example, taking the first preset correction coefficient as 0.9 and the coefficient A1 as 0.8, and the pulse time T1 of the stepper motor in the normal reset process of the air deflector as 1s as an example, when X ≤ 0.9, the pulse time of the stepper motor in the overstep reset process is calculated according to the formula (3), and according to the formula (3), the pulse time of the stepper motor in the overstep reset process is 0s, which is less than the pulse time in the normal reset process of the air deflector. Since the pulse time of the stepper motor is proportional to the output torque, the torque output by the stepper motor in the overstep reset process of the air deflector is reduced, thereby reducing the overstep sound generated in the overstep reset process of the air deflector. After the pulse time of the stepper motor in the overstep reset process is calculated, the stepper motor can be controlled to run according to the pulse time of 0s.

[0070] For example, taking the first preset correction coefficient as 0.9, the coefficient A1 as 0.8, and the pulse time T1 of the stepper motor in the normal closing process of the air deflector as 2s as an example, when X≤0.9, the pulse time of the stepper motor in the overstep resetting process is calculated as 1s according to the formula (3). The pulse time is less than the pulse time in the normal resetting process of the air deflector. Since the pulse time of the stepper motor is proportional to the output torque, the output torque of the stepper motor in the overstep resetting process of the air deflector is reduced, thereby reducing the overstep sound generated in the overstep resetting process of the air deflector. After the pulse time of the stepper motor in the overstep resetting process is calculated, the stepper motor can be controlled to run according to the pulse time of 1s.

[0071] In an embodiment, the step of "determining the pulse correction coefficient of the stepper motor in the overstep resetting process according to the comparison result" further includes:

[0072] When V1>V2, the overstep pulse correction coefficient of the stepper motor is calculated according to the following formula:

[0073] X=1+(V1-V2) / V2 (4).

[0074] In the formula (4), X is the pulse correction coefficient of the stepper motor in the overstep resetting process.

[0075] For example, taking the actual power supply voltage of the stepper motor as V1 and the rated voltage V2 of the stepper motor as 36V as an example, when V1>36V, the actual power supply voltage of the stepper motor is relatively high, and the pulse correction coefficient of the stepper motor is calculated according to the formula (1). Since V1>V2, the pulse correction coefficient X of the stepper motor is calculated according to the formula (41) to be greater than 1. That is, when V1>V2, the pulse correction coefficient X of the stepper motor in the overstep resetting process is greater than 1.

[0076] Further, the step of "controlling the pulse time of the stepper motor in the overstep resetting process based on the pulse correction coefficient" further includes:

[0077] When K2X≤K3, the overstep pulse correction coefficient of the stepper motor is calculated according to the following formula:

[0078] T2=T1×A1 / X (5)

[0079] In the formula (5), T2 is the pulse time of the stepper motor in the overstep resetting process, T1 is the pulse time of the stepper motor in the normal resetting process, A1 is a coefficient, K2 is a second preset correction coefficient, and K3 is a third preset correction coefficient.

[0080] Specifically, 0

[0081] For example, taking the second preset correction coefficient K2 as 1, the third preset correction coefficient K3 as 1.1, the coefficient A1 as 0.8, the pulse time of the stepping motor in the normal closing process of the air deflector as T1 as 1s, and X as 1.1 as an example, it is calculated according to the formula (5) that the pulse time of the stepping motor in the overstep resetting process is 0.73s. The pulse time is less than the pulse time in the normal resetting process of the air deflector. Since the pulse time of the stepping motor is in a proportional relationship with the output torque, the torque output by the stepping motor in the overstep resetting process of the air deflector is reduced, so that the overstep sound generated in the overstep resetting process of the air deflector can be reduced. After the pulse time of the stepping motor in the overstep resetting process is calculated, the stepping motor can be controlled to run according to the pulse time less than 0.73s.

[0082] Further, the control method further comprises:

[0083] When X>K3, the overstep pulse correction coefficient of the stepping motor is calculated by the following formula:

[0084] T2=int[T1xA1 / (XxA2)] (6)

[0085] In the formula (6), A2 is a coefficient.

[0086] Specifically, 0<A1<1, and A2>1.

[0087] For example, taking the third preset correction coefficient K3 as 1.1, the coefficient A1 as 0.8, the coefficient A2 as 1.2, the pulse time of the stepping motor in the overstep closing process of the air deflector as T1 as 1s, and X as 1.2 as an example, it is calculated according to the formula (3) that the pulse time of the stepping motor in the overstep resetting process is 0s. The pulse time is less than the pulse time in the normal resetting process of the air deflector. Since the pulse time of the stepping motor is in a proportional relationship with the output torque, the torque output by the stepping motor in the overstep resetting process of the air deflector is reduced, so that the overstep sound generated in the overstep resetting process of the air deflector can be reduced. After the pulse time of the stepping motor in the overstep resetting process is calculated, the stepping motor can be controlled to stop running.

[0088] Again, taking the third preset correction coefficient K3 as 1.1, the coefficient A1 as 0.8, the coefficient A2 as 1.2, the pulse time of the stepping motor in the process of overstep closing of the air deflector as T1 as 2s, and X as 1.2 as an example, it is explained that when X>1.1, the pulse time of the stepping motor in the process of overstep resetting is calculated as 1s according to the formula (3). The pulse time is less than the pulse time in the process of normal resetting of the air deflector. Since the pulse time of the stepping motor is in direct proportion to the output torque, the output torque of the stepping motor in the process of overstep resetting of the air deflector is reduced, so that the overstep sound generated in the process of overstep resetting of the air deflector is reduced. After the pulse time of the stepping motor in the process of overstep resetting is calculated, the stepping motor is controlled to run according to the pulse time 1s.

[0089] The possible operation process of the air conditioner of the present application is explained below. Figure 2 The possible operation process of the air conditioner of the present application is explained below. Figure 2 The logic diagram of one possible implementation of the control method of the air conditioner of the present application

[0090] As shown in the possible operation process, Figure 2

[0091] S201, in the process of driving the air deflector to rotate by the stepping motor, the actual power supply voltage V1 of the stepping motor is acquired, and then S202 is executed.

[0092] S202, whether V1≤V2 is established? If yes, S203 is executed; if no, S207 is executed.

[0093] S203, the pulse correction coefficient X of the stepping motor is calculated by the formula (1), and then S204 is executed.

[0094] S204, whether X≤0.9 is established? If yes, S205 is executed; if 0.9X≤1, S206 is executed.

[0095] S205, the pulse time T2 of the stepping motor in the process of overstep resetting is calculated by the formula (3), and then S211 is executed.

[0096] S206, the pulse time T2 of the stepping motor in the process of overstep resetting is calculated by the formula (2), and then S211 is executed.

[0097] S207, the pulse correction coefficient X of the stepping motor is calculated by the formula (4), and then S208 is executed.

[0098] S208, whether 1X≤1.1 is established? If yes, S209 is executed; if X>1.1, S210 is executed.

[0099] ​S209, calculating the pulse time T2 of the stepping motor in the overstep reset process by formula (5), and then performing S211.

[0100] S210, calculating the pulse time T2 of the stepping motor in the overstep reset process by formula (6), and then performing S211.

[0101] S211, controlling the stepping motor to run according to the pulse time T2.

[0102] In addition, the application further provides an air conditioner, which comprises a controller configured to execute the control method of the air conditioner according to any of the above embodiments.

[0103] Those skilled in the art can understand that the combination of features of different embodiments means to be within the scope of the application and form different embodiments, although some embodiments described herein include certain features rather than other features included in other embodiments. For example, in the claims of the application, any of the claimed embodiments can be used in any combination.

[0104] It should be noted that although the detailed steps of the method of the application are described in detail above, those skilled in the art can combine, split and change the order of the above steps without deviating from the basic principles of the application. The technical solutions modified in this way do not change the basic concept of the application, and therefore fall within the protection scope of the application.

[0105] So far, the technical solutions of the application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the application, and the technical solutions after these changes or replacements will fall within the protection scope of the application.

Claims

1. A control method of an air conditioner, characterized by, The control method comprises: During the rotation of the step motor driving the air deflector, the actual supply voltage V1 of the step motor is acquired; The actual supply voltage V1 of the step motor is compared with the rated voltage V2 of the step motor; According to the comparison result, the pulse correction coefficient of the step motor in the overstep reset process is determined; Based on the pulse correction coefficient, the pulse time of the step motor in the overstep reset process is determined; The pulse time of the step motor in the overstep reset process is controlled; The step of "determining the pulse correction coefficient of the step motor in the overstep reset process according to the comparison result" further comprises: When V1≤V2, the pulse correction coefficient of the step motor is calculated by the following formula: X=1-(V2-V1) / V2 Wherein X is the pulse correction coefficient of the step motor in the overstep reset process.

2. The control method of the air conditioner according to claim 1, characterized by, The step of "controlling the pulse time of the step motor in the overstep reset process based on the pulse correction coefficient" further comprises: When K1<X≤K2, the pulse time of the step motor in the overstep reset process is calculated by the following formula: T2=T1×A1 Wherein T2 is the pulse time of the step motor in the overstep reset process, T1 is the pulse time of the step motor in the normal reset process, A1 is a coefficient, K1 is a first preset correction coefficient, and K2 is a second preset correction coefficient.

3. The control method of the air conditioner according to claim 2, characterized by, The step of "controlling the pulse time of the step motor in the overstep reset process based on the pulse correction coefficient" further comprises: When X≤K1, the pulse time of the step motor in the overstep reset process is calculated by the following formula: T2=int[T1×A1 / X].

4. The control method of an air conditioner according to claim 2 or 3, characterized by, 0<A1<1。 5. The control method of the air conditioner according to claim 1, wherein The step of "determining the pulse correction coefficient of the step motor in the overstep reset process according to the comparison result" further comprises: When V1>V2, the overstep pulse correction coefficient of the step motor is calculated by the following formula: X=1+(V1-V2) / V2 Wherein X is the pulse correction coefficient of the step motor in the overstep reset process.

6. The control method of the air conditioner according to claim 5, characterized by, The step of "controlling the pulse time of the step motor in the overstep reset process based on the pulse correction coefficient" further comprises: When K2<X≤K3, the overstep pulse correction coefficient of the step motor is calculated by the following formula: T2=T1×A1 / X Wherein T2 is the pulse time of the step motor in the overstep reset process, T1 is the pulse time of the step motor in the normal reset process, A1 is a coefficient, K2 is a second preset correction coefficient, and K3 is a third preset correction coefficient.

7. The control method of the air conditioner according to claim 6, characterized by, The control method further comprises: When X>K3, the overstep pulse correction coefficient of the step motor is calculated by the following formula: T2=int[T1×A1 / (X×A2)] Wherein A2 is a coefficient.

8. The control method of an air conditioner according to claim 6 or 7, characterized by, 0<A1<1, 1<A2≤1.

2.

9. An air conditioner characterized by comprising: The air conditioner comprises a controller configured to perform the control method of the air conditioner according to any one of claims 1 to 8.

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