Efficient mute control method, device and equipment for washing machine, medium and product

Abstract

The invention relates to the technical field of washing machines, in particular to a washing machine efficient mute control method, device and equipment, a medium and a product, and the method comprises the steps that in response to the washing function of a washing machine, the current direct-axis voltage and the current quadrature-axis voltage of a driving motor in the washing machine are obtained; the final direct-axis voltage of the driving motor is determined according to a preset high-frequency voltage signal and the current direct-axis voltage, and the washing starting angle and the washing driving speed of the driving motor are determined according to the final direct-axis voltage and the current quadrature-axis voltage; and driving the driving motor to rotate the motor angle according to the washing driving speed to perform washing operation of the washing machine. The noise reduction device aims at effectively reducing noise of the washing machine in the washing process.

Description

Technical Field

[0001] The present application relates to the technical field of washing machines, and in particular to a method, device, equipment, medium and product for efficient and silent control of washing machines. Background Art

[0002] With the continuous advancement of washing machine technology, users have increasing requirements for the performance of washing machines, especially for the noise control of washing machines.

[0003] The noise of washing machines can be mainly divided into the noise at the start of washing, the jitter noise of fast forward and reverse rotation during washing operation, and the shaking and displacement noise during high-speed dehydration. Among them, the noise at the start of washing mainly comes from the pre-positioning process of the motor, which is often accompanied by the reverse jitter of the motor, thus generating a lot of noise. When washing delicate fabrics such as silk, the drum washing machine needs to reverse back and forth quickly and frequently, which will not only cause the motor to shake at the moment of switching, but also cause a large current because the motor needs to output a large torque at low speed, further aggravating the noise problem. In addition, during the high-speed dehydration stage, if the clothes inside the washing machine are unevenly distributed, that is, the uniform distribution action is not effectively completed, the washing machine will run in a large eccentric state. Once it enters high-speed rotation, it will cause strong vibration and displacement.

[0004] Therefore, how to effectively reduce the noise of a washing machine during the washing process is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The main purpose of this application is to provide a washing machine efficient and silent control method, device, equipment, medium and product, aiming to effectively reduce the noise of the washing machine during the washing process.

[0006] To achieve the above-mentioned purpose, the present application provides a washing machine efficient and silent control method, the washing machine efficient and silent control method comprising: In response to a washing function of the washing machine, obtaining a current direct-axis voltage and a current quadrature-axis voltage of a driving motor in the washing machine; Determining a final direct-axis voltage of the driving motor according to a preset high-frequency voltage signal and the current direct-axis voltage, and determining a washing start angle and a washing driving speed of the driving motor according to the final direct-axis voltage and the current quadrature-axis voltage; The driving motor is driven to rotate the motor angle according to the washing driving speed to perform a washing operation of the washing machine.

[0007] In one embodiment, the step of obtaining the current direct-axis voltage and the current quadrature-axis voltage of the driving motor in the washing machine includes: A current direct-axis current and a current quadrature-axis current of a driving motor in the washing machine are obtained, and proportional-integral control is performed on the current direct-axis current and the current quadrature-axis current respectively to obtain a current direct-axis voltage corresponding to the current direct-axis current and a current quadrature-axis voltage of the current quadrature-axis current.

[0008] In one embodiment, the step of determining the washing start angle and the washing drive speed of the driving motor according to the final direct-axis voltage and the current quadrature-axis voltage comprises: Determine the motor direct axis corresponding to the final direct axis voltage and the motor quadrature axis corresponding to the current quadrature axis voltage, and use the angle between the motor direct axis and the motor quadrature axis as the rotor position angle of the drive motor; Performing a matrix operation according to the rotor position angle, the final direct-axis voltage and the current quadrature-axis voltage to obtain a first-phase voltage component and a second-phase voltage component of the drive motor in a two-phase stationary coordinate system; A washing start angle and a washing driving speed of the driving motor are determined according to the first phase voltage component and the second phase voltage component.

[0009] In one embodiment, the step of determining the washing start angle and the washing drive speed of the driving motor according to the first phase voltage component and the second phase voltage component comprises: Performing sinusoidal pulse width modulation according to the first phase voltage component and the second phase voltage component to obtain a three-phase current of the drive motor, and converting the three-phase current into a first phase current component and a second phase current component of the drive motor in the two-phase stationary coordinate system; The washing driving speed of the driving motor is determined according to the first phase current component, and the washing starting angle of the driving motor is determined according to the second phase current component.

[0010] In one embodiment, the step of determining the washing driving speed of the driving motor according to the first phase current component includes: A first-phase high-frequency current corresponding to the first-phase current component is determined, and a phase-locked loop control is performed according to the first-phase high-frequency current to obtain a washing driving speed of the driving motor.

[0011] In one embodiment, the step of determining the washing start angle of the driving motor according to the second phase current component includes: The second-phase high-frequency current corresponding to the second-phase current component is determined, and a phase-locked loop control is performed according to the second-phase high-frequency current to obtain a washing start angle of the driving motor.

[0012] In addition, to achieve the above-mentioned purpose, the present application also provides a washing machine high-efficiency silent control device, the washing machine high-efficiency silent control device comprising: A response module, configured to obtain a current direct-axis voltage and a current quadrature-axis voltage of a driving motor in the washing machine in response to a washing function of the washing machine; a parameter determination module, configured to determine a final direct-axis voltage of the drive motor according to a preset high-frequency voltage signal and the current direct-axis voltage, and to determine a washing start angle and a washing drive speed of the drive motor according to the final direct-axis voltage and the current quadrature-axis voltage; The driving module is used to drive the driving motor to rotate the motor angle according to the washing driving speed to perform the washing operation of the washing machine.

[0013] The various functional modules of the efficient and silent control device for a washing machine of the present application implement the steps of the efficient and silent control method for a washing machine of the present application as described above when running.

[0014] In addition, to achieve the above-mentioned purpose, the present application also provides a washing machine efficient and silent control device, which includes a memory, a processor, and a washing machine efficient and silent control program stored in the memory and executable on the processor, and the washing machine efficient and silent control program, when executed by the processor, implements the steps of the above-mentioned washing machine efficient and silent control method.

[0015] In addition, to achieve the above-mentioned purpose, the present application also provides a medium, which is a computer-readable storage medium, and a washing machine efficient and silent control program is stored on the computer-readable storage medium. When the washing machine efficient and silent control program is executed by the processor, the steps of the above-mentioned washing machine efficient and silent control method are implemented.

[0016] In addition, to achieve the above-mentioned purpose, the present application also provides a computer product, which includes a computer program, and the computer program contains computer program code means stored on a computer-readable medium or a carrier, and the computer program code means is configured to implement the steps of the washing machine efficient and silent control method as described above when executed by a computer or a processor.

[0017] The present application provides an efficient and silent control method for a washing machine, which achieves effective noise reduction during the washing process by finely regulating the washing start angle and washing drive speed of the driving motor in the washing machine. Specifically, in response to the washing function of the washing machine, the current direct-axis voltage and the current quadrature-axis voltage of the driving motor in the washing machine are timely obtained, and the final direct-axis voltage of the driving motor can be effectively optimized based on the current direct-axis voltage combined with a preset high-frequency voltage signal; next, the washing start angle and the washing drive speed of the driving motor can be accurately calculated based on the final direct-axis voltage and the current quadrature-axis voltage; finally, the driving motor is driven to rotate the motor angle according to the washing drive speed to perform the washing operation of the washing machine, thereby achieving zero-speed and high-torque starting of the driving motor in the washing machine, avoiding the reverse jitter phenomenon generated by the traditional motor pre-positioning method when the washing is started, and effectively reducing the noise of the washing machine during the washing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a flow chart of the first embodiment of the efficient and silent control method for a washing machine of the present application; Figure 2 It is a block diagram of high-frequency pulse square wave voltage injection control involved in the embodiment of the present application; Figure 3 It is a structural schematic diagram of a high-efficiency silent control device for a washing machine involved in an embodiment of the present application; Figure 4 This is a schematic diagram of the structure of a washing machine high-efficiency silent control device involved in the embodiment of the present application; Figure 5 This is a schematic diagram of the memory structure involved in the embodiment of the present application.

[0019] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] The present application embodiment provides a washing machine efficient silent control method, referring to Figure 1 As shown, Figure 1 It is a flow chart of the first embodiment of the efficient and silent control method for a washing machine of the present application.

[0021] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

[0022] With the continuous advancement of washing machine technology, users have increasing requirements for the performance of washing machines, especially for the noise control of washing machines.

[0023] The noise of washing machines can be mainly divided into the noise at the start of washing, the jitter noise of fast forward and reverse rotation during washing operation, and the shaking and displacement noise during high-speed dehydration. Among them, the noise at the start of washing mainly comes from the pre-positioning process of the motor, which is often accompanied by the reverse jitter of the motor, thus generating a lot of noise. When washing delicate fabrics such as silk, the drum washing machine needs to reverse back and forth quickly and frequently, which will not only cause the motor to shake at the moment of switching, but also cause a large current because the motor needs to output a large torque at low speed, further aggravating the noise problem. In addition, during the high-speed dehydration stage, if the clothes inside the washing machine are unevenly distributed, that is, the uniform distribution action is not effectively completed, the washing machine will run in a large eccentric state. Once it enters high-speed rotation, it will cause strong vibration and displacement.

[0024] Therefore, in order to solve the technical defect of high washing noise in traditional washing machines, the present application provides a washing machine efficient and silent control method, device, equipment, medium and product.

[0025] It should be noted that the execution subject of this embodiment may be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, a database system, etc., or a device capable of realizing the above functions, such as a washing machine efficient and silent control device, etc. The following takes the washing machine efficient and silent control device as an example to illustrate this embodiment and the following embodiments.

[0026] The efficient and silent control method for a washing machine of the present application includes the following implementation steps S10 to S30.

[0027] Step S10: In response to the washing function of the washing machine, a current direct-axis voltage and a current quadrature-axis voltage of a driving motor in the washing machine are obtained.

[0028] In this embodiment, in response to the washing function of the washing machine being activated, the current direct-axis current and the current quadrature-axis current of the driving motor in the washing machine in the two-phase rotating coordinate system are timely acquired, and the proportional-integral control strategy is applied to accurately calculate the current direct-axis voltage corresponding to the current direct-axis current and the current quadrature-axis voltage of the current quadrature-axis current, thereby enabling real-time monitoring of the current direct-axis voltage and the current quadrature-axis current of the driving motor, providing accurate and reliable data support for the subsequent calculation of the washing start angle and washing drive speed of the driving motor.

[0029] It should be noted that the two-phase rotating coordinate system (i.e. Figure 2The dq) shown can be understood as a coordinate system constructed by the d-axis (i.e., the motor direct axis) and the q-axis (i.e., the motor quadrature axis), wherein the d-axis is defined to be the same as the rotor pole axis of the drive motor, and the q-axis is defined to be the axis that leads the d-axis by 90° in the rotation direction, and the two-phase rotating coordinate system rotates at the same speed as the rotor of the drive motor.

[0030] The current direct axis current can be Figure 2 The Id* shown in the figure represents the current component of the driving motor on the d-axis in the two-phase rotating coordinate system; the current quadrature axis current can be expressed as Figure 2 The Iq* shown is the current component of the driving motor on the q axis in the two-phase rotating coordinate system; Figure 2 The PI shown here represents the proportional-integral control strategy; the current direct-axis voltage can be used Figure 2 The ud shown in the figure represents the voltage component on the d-axis in the two-phase rotating coordinate system; the current quadrature axis voltage can be expressed as Figure 2 The uq shown is the voltage component on the q axis in the two-phase rotating coordinate system.

[0031] Step S20: determining the final direct-axis voltage of the drive motor according to the preset high-frequency voltage signal and the current direct-axis voltage, and determining the washing start angle and washing driving speed of the drive motor according to the final direct-axis voltage and the current quadrature-axis voltage.

[0032] In this embodiment, after determining the current direct-axis current of the driving motor in the two-phase rotating coordinate system, the present application introduces a preset high-frequency voltage signal superimposed on the current direct-axis voltage, so that the final direct-axis voltage of the driving motor can be accurately obtained to optimize the starting characteristics of the driving motor, thereby reducing the jitter and noise when the driving motor starts (i.e., when the washing machine starts washing); next, the final direct-axis voltage and the current quadrature-axis voltage are used to calculate the washing start angle and washing drive speed of the driving motor to ensure that the driving motor in the washing machine can operate at the optimal washing start angle and washing drive speed during the washing process, which not only ensures the washing effect of the washing machine, but also reduces unnecessary energy consumption and noise.

[0033] It should be noted that the preset high-frequency voltage signal is Figure 2 The udh shown can be understood as a voltage signal that is much larger than the carrier frequency of the driving motor, and the high-frequency voltage signal is a positive and negative high-frequency PWM (Pulse Width Modulation, PWM) square wave voltage signal.

[0034] In a specific embodiment, refer to Figure 2, a high-frequency PWM square wave voltage signal (i.e., a preset high-frequency voltage signal) with a frequency higher than the carrier frequency is superimposed and injected on the d-axis in the two-phase rotating coordinate system, and the voltage duty cycle of the high-frequency voltage signal is accurately set with the help of the register FOC_UDCPS, thereby realizing fine adjustment of the control of the drive motor in the washing machine. The ME core (i.e., the motor control core) of the drive motor will automatically flip the high-frequency voltage signal according to the set duty cycle in each carrier cycle to ensure that the injected high-frequency voltage signal presents an alternating positive and negative form. This high-frequency voltage signal is then automatically superimposed with the output voltage of the d-axis current loop (stored in the register FOC_UD) to generate the final D-axis voltage output (i.e., the final direct-axis voltage), thereby providing strong support for the position estimation in the sensorless control algorithm of the drive motor in the washing machine.

[0035] Step S30: driving the driving motor to rotate the motor angle according to the washing driving speed to perform the washing operation of the washing machine.

[0036] In this embodiment, after determining the washing start angle and washing drive speed of the driving motor, the driving motor is driven to rotate the motor angle according to the washing drive speed to perform the washing operation of the washing machine, which can effectively reduce the noise and shaking problems caused by washing start, ensure that the washing machine maintains smooth operation during the washing process, and significantly improve the silent performance of the washing machine during the washing process.

[0037] In summary, the present application provides an efficient and silent control method for a washing machine, which achieves effective noise reduction during the washing process by finely regulating the washing start angle and washing drive speed of the driving motor in the washing machine. Specifically, in response to the washing function of the washing machine, the current direct-axis voltage and the current quadrature-axis voltage of the driving motor in the washing machine are timely acquired, and the final direct-axis voltage of the driving motor can be effectively optimized based on the current direct-axis voltage combined with the preset high-frequency voltage signal; next, the washing start angle and the washing drive speed of the driving motor can be accurately calculated based on the final direct-axis voltage and the current quadrature-axis voltage; finally, the driving motor is driven to rotate the motor angle according to the washing drive speed to perform the washing operation of the washing machine, thereby achieving zero-speed and high-torque starting of the driving motor in the washing machine, avoiding the reverse jitter phenomenon generated by the traditional motor pre-positioning method at the start of washing, and effectively reducing the noise of the washing machine during the washing process.

[0038] Further, based on the first embodiment of the efficient and silent control method for a washing machine of the present application, a second embodiment of the efficient and silent control method for a washing machine of the present application is proposed. In some feasible embodiments, the above step S10: obtaining the current direct-axis voltage and the current quadrature-axis voltage of the driving motor in the washing machine, further includes the following implementation step S101.

[0039] Step S201: obtaining a current direct-axis current and a current quadrature-axis current of a driving motor in the washing machine, and performing proportional-integral control on the current direct-axis current and the current quadrature-axis current respectively to obtain a current direct-axis voltage corresponding to the current direct-axis current and a current quadrature-axis voltage of the current quadrature-axis current.

[0040] In this embodiment, refer to Figure 2 In response to the washing function of the washing machine being activated, after obtaining the current direct-axis current Id* and the current quadrature-axis current Iq* of the driving motor in the washing machine, the current direct-axis current Id* and the current quadrature-axis current Iq* are respectively controlled by proportional integration according to a preset proportional-integral algorithm, so that the current direct-axis voltage corresponding to the current direct-axis current and the current quadrature-axis voltage of the current quadrature-axis current can be accurately obtained.

[0041] It should be noted that the proportional integral algorithm is:

[0042] in, represents the proportional gain corresponding to the proportional-integral algorithm, Represents the integral gain corresponding to the proportional integral algorithm, Indicates a small change in time; when proportional integral control is performed on the current direct-axis current Id*, Indicates the current direct-axis current Id*, Represents the current direct-axis voltage ud; when the current quadrature-axis current Iq* is controlled by proportional integral, Indicates the current direct-axis current Iq*, Indicates the current direct-axis voltage uq.

[0043] Further, in some feasible embodiments, the above step S20: determining the washing start angle and washing drive speed of the driving motor according to the final direct-axis voltage and the current quadrature-axis voltage, also includes the following implementation steps S201 to S203.

[0044] Step S201: determining the motor direct axis corresponding to the final direct axis voltage and the motor quadrature axis corresponding to the current quadrature axis voltage, and taking the angle between the motor direct axis and the motor quadrature axis as the rotor position angle of the drive motor; Step S202: performing matrix operations according to the rotor position angle, the final direct-axis voltage and the current quadrature-axis voltage to obtain a first phase voltage component and a second phase voltage component of the drive motor in a two-phase stationary coordinate system.

[0045] In this embodiment, the motor direct axis corresponding to the final direct axis voltage and the motor quadrature axis corresponding to the current quadrature axis voltage are determined, and the angle between the motor direct axis and the motor quadrature axis is used as the rotor position angle of the drive motor; next, a transformation matrix is ​​constructed according to the rotor position angle, and a matrix operation is performed on the final direct axis voltage and the current quadrature axis voltage according to the transformation matrix, so that the drive motor can be rotated in a two-phase rotating coordinate system (i.e. Figure 2 The final direct-axis voltage and current quadrature-axis voltage under the dq) shown in the figure are converted into the drive motor in the two-phase stationary coordinate system (i.e. Figure 2 The first phase voltage component (i.e. Figure 2 shown ) and the second phase voltage component (i.e. Figure 2 shown ).

[0046] It should be noted that the algorithm corresponding to the matrix operation is:

[0047] in, Indicates that the drive motor is in a two-phase stationary coordinate system (i.e. Figure 2 The first phase voltage component under αβ) shown; Indicates that the drive motor is in a two-phase stationary coordinate system (i.e. Figure 2 The second phase voltage component under αβ) shown; Indicates the rotor position angle of the drive motor; represents the final direct-axis voltage, Indicates the current quadrature axis voltage; Represents a transformation matrix.

[0048] Step S203: determining a washing start angle and a washing driving speed of the driving motor according to the first phase voltage component and the second phase voltage component.

[0049] In this embodiment, the washing start angle and washing drive speed of the driving motor are determined based on the first-phase voltage component and the second-phase voltage component, which can significantly improve the accuracy and flexibility of the driving motor control in the washing machine. Specifically, the first-phase voltage component and the second-phase voltage component obtained by precise calculation can accurately determine the initial state of the driving motor, thereby determining the optimal washing start angle, ensuring that the driving motor of the washing machine can smoothly and quickly enter the working state when the washing machine is started, and effectively reducing the noise of the washing machine during the washing process. At the same time, according to the changes in the first / second-phase voltage components, the washing drive speed of the driving motor can also be adjusted in real time to meet the precise requirements of the motor speed for different washing programs, thereby optimizing the washing effect, improving the washing efficiency, and effectively reducing energy consumption and wear, bringing users a more excellent washing experience.

[0050] Further, in some feasible embodiments, the above step S203: determining the washing start angle and washing drive speed of the drive motor according to the first phase voltage component and the second phase voltage component, also includes the following implementation steps S2031 to S2032.

[0051] Step S2031: Perform sinusoidal pulse width modulation according to the first phase voltage component and the second phase voltage component to obtain the three-phase current of the drive motor, and convert the three-phase current into the first phase current component and the second phase current component of the drive motor in the two-phase stationary coordinate system.

[0052] In this embodiment, according to the first phase voltage component and the second phase voltage component Determine the reference voltage vector uref on the α~β plane where the two-phase stationary coordinate system is located, and pass Figure 2 The SVPWM (Space Vector Pulse Width Modulation) shown in the figure divides the α~β plane into 6 sectors with a unit of 60°, and calculates the duty ratio of the three basic voltage vectors used to generate the PWM signal (i.e., the duration of each basic voltage vector in a PWM cycle) based on the position of the reference voltage vector uref in each sector. Next, the corresponding three PWM signals (i.e., Figure 2 Sa, Sb and Sc shown in the figure), and convert these three PWM signals (i.e. Figure 2 Sa, Sb and Sc) act on the drive motor (i.e. Figure 2 The IPMSM shown in the figure is connected to the bridge arm module of the corresponding winding to switch each bridge arm module from the off state to the on state to generate the winding voltage of each phase winding of the drive motor; next, the three-phase current (i.e. Figure 2 ia, id and ic shown), then, the three-phase current in the three-phase stationary coordinate system (i.e. Figure 2 The ia, id and ic shown in the figure are converted into the first phase current component of the driving motor in the two-phase stationary coordinate system (i.e. Figure 2 iα shown) and the second phase current component (i.e. Figure 2 iβ shown).

[0053] It should be noted that the preset phase current component algorithm is:

[0054] in, represents the first-phase current component of the drive motor in a two-phase stationary coordinate system, represents the second phase current component of the drive motor in the two-phase stationary coordinate system, , as well as is the three-phase current in the three-phase stationary coordinate system.

[0055] Step S2032: determining the washing driving speed of the driving motor according to the first phase current component, and determining the washing starting angle of the driving motor according to the second phase current component.

[0056] In this embodiment, the washing drive speed of the motor is directly determined according to the first-phase current component, thereby ensuring that the washing machine can maintain a stable rotation speed during the washing process and improving washing efficiency and uniformity. At the same time, the washing start angle of the motor is determined by the second-phase current component, so that the drive motor can enter the working state more smoothly when starting, reduce the starting shock and vibration, and extend the service life of the motor, which not only improves the performance and stability of the washing machine, but also brings a more comfortable and quiet washing experience to the user.

[0057] Furthermore, in some other feasible embodiments, the above step S2032: determining the washing driving speed of the driving motor according to the first-phase current component may also include the following implementation step A10.

[0058] Step A10: determining the first-phase high-frequency current corresponding to the first-phase current component, and performing phase-locked loop control according to the first-phase high-frequency current to obtain the washing driving speed of the driving motor.

[0059] In this embodiment, refer to Figure 2 , extract the high-frequency signal in the first-phase current component, obtain the first-phase high-frequency current corresponding to the first-phase current component, and perform phase-locked loop control based on the first-phase high-frequency current (i.e. Figure 2 The PLL shown in the figure can accurately obtain the washing driving speed of the driving motor.

[0060] Furthermore, in some feasible embodiments, the above step S2032: determining the washing start angle of the driving motor according to the second phase current component may also include the following implementation step B10.

[0061] Step B10: Determine the second-phase high-frequency current corresponding to the second-phase current component, and perform phase-locked loop control according to the second-phase high-frequency current to obtain the washing start angle of the drive motor.

[0062] In this embodiment, refer to Figure 2, extract the high-frequency signal in the second-phase current component, obtain the second-phase high-frequency current corresponding to the second-phase current component, and perform phase-locked loop control based on the second-phase high-frequency current (i.e. Figure 2 The PLL shown in the figure can accurately obtain the washing start angle of the driving motor.

[0063] In addition, refer to Figure 2 As shown, the first phase current component of the drive motor in the two-phase stationary coordinate system (i.e. Figure 2 iα shown) and the second phase current component (i.e. Figure 2 The iβ shown in the figure is converted into the direct-axis current component and the quadrature-axis current component of the driving motor in the two-phase rotating coordinate system, and the low-frequency signals in the direct-axis current component and the quadrature-axis current component are extracted respectively to obtain the direct-axis low-frequency component corresponding to the direct-axis current component (i.e. Figure 2 The idl shown in the figure) and the quadrature-axis low-frequency component corresponding to the quadrature-axis current component (i.e. Figure 2 iql shown); next, the current direct-axis current is updated according to the direct-axis low-frequency component to obtain the updated current direct-axis current, and the current quadrature-axis current is updated according to the quadrature-axis low-frequency component to obtain the updated current quadrature-axis current, which not only significantly improves the accuracy and response speed of motor control, but also effectively reduces the noise of the driving motor in the washing machine during operation, ensuring that the washing machine continues to maintain efficient and stable silent performance during the washing process.

[0064] In summary, the present application provides an efficient and silent control method for a washing machine, which achieves effective noise reduction during the washing process by finely regulating the washing start angle and washing drive speed of the driving motor in the washing machine. Specifically, in response to the washing function of the washing machine, the current direct-axis voltage and the current quadrature-axis voltage of the driving motor in the washing machine are timely acquired, and the final direct-axis voltage of the driving motor can be effectively optimized based on the current direct-axis voltage combined with the preset high-frequency voltage signal; next, the washing start angle and the washing drive speed of the driving motor can be accurately calculated based on the final direct-axis voltage and the current quadrature-axis voltage; finally, the driving motor is driven to rotate the motor angle according to the washing drive speed to perform the washing operation of the washing machine, thereby achieving zero-speed and high-torque starting of the driving motor in the washing machine, avoiding the reverse jitter phenomenon generated by the traditional motor pre-positioning method at the start of washing, and effectively reducing the noise of the washing machine during the washing process. That is, when the driving motor in the washing machine washes forward and reverse, a high-frequency voltage signal needs to be injected each time it starts, so that the washing start angle of the driving motor can be detected to determine the current position information of the driving motor, so that the driving motor can directly start slowly in a closed loop without noise and zero speed. When the motor quickly reverses and washes softly, it can achieve small current, noise-free, rapid reverse and soft washing. When the washing machine dehydrates, the cloth can be shaken and spread out at a low speed to reduce the eccentricity of the washing machine. Quickly entering high-speed dehydration can effectively reduce the dehydration time, and high-speed dehydration can reduce the problem of vibration displacement, thereby achieving low jitter, noise-free, high-efficiency and high-speed dehydration.

[0065] In addition, this application also provides a washing machine high-efficiency silent control device, please refer to Figure 3 , Figure 3 : is a schematic diagram of the structure of the washing machine high-efficiency silent control device involved in the embodiment of the present application. The washing machine high-efficiency silent control device provided in the present application comprises: A response module H01, configured to obtain a current direct-axis voltage and a current quadrature-axis voltage of a driving motor in the washing machine in response to a washing function of the washing machine; A parameter determination module H02, used to determine the final direct-axis voltage of the drive motor according to a preset high-frequency voltage signal and the current direct-axis voltage, and to determine the washing start angle and washing drive speed of the drive motor according to the final direct-axis voltage and the current quadrature-axis voltage; The driving module H03 is used to drive the driving motor to rotate the motor angle according to the washing driving speed to perform the washing operation of the washing machine.

[0066] In addition, this application also provides a washing machine high-efficiency silent control device. Figure 4 , Figure 4The schematic diagram of the structure of the efficient and silent control device for washing machines involved in the embodiment of the present application is shown in FIG. The device of the embodiment of the present application can be a device for locally running the efficient and silent control method for washing machines.

[0067] The present application provides a washing machine efficient and silent control device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the washing machine efficient and silent control device method in the above-mentioned embodiment one.

[0068] Reference below Figure 4 , which shows a schematic diagram of the structure of a washing machine efficient and silent control device suitable for implementing the embodiment of the present application. The washing machine efficient and silent control device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 4 The washing machine high-efficiency silent control device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0069] like Figure 4As shown, the efficient and silent control device for washing machines may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the efficient and silent control device for washing machines are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following devices can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the washing machine efficient and silent control device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a washing machine efficient and silent control device with various devices, it should be understood that it is not required to implement or have all the devices shown. More or fewer devices can be implemented or provided instead.

[0070] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0071] The efficient and silent control device for washing machines provided by the present application adopts the efficient and silent control device method for washing machines in the above-mentioned embodiment, which can solve the technical problem of low reliability of the efficient and silent control device for washing machines. Compared with the prior art, the beneficial effects of the efficient and silent control device for washing machines provided by the present application are the same as the beneficial effects of the efficient and silent control device method for washing machines provided by the above-mentioned embodiment, and other technical features in the efficient and silent control device for washing machines are the same as the features disclosed in the method of the previous embodiment, which will not be described in detail here.

[0072] In addition, refer to Figure 5 , Figure 5 Schematic diagram of the memory structure involved in the embodiment of the present application. The present application provides a computer-readable storage medium. The computer-readable storage medium stores a washing machine high-efficiency silent control program, and when the washing machine high-efficiency silent control program is executed by a processor, the steps of the above-mentioned washing machine high-efficiency silent control method are implemented.

[0073] In addition, to achieve the above-mentioned purpose, the present application also provides a computer product, which includes a computer program, and the computer program contains computer program code means stored on a computer-readable medium or a carrier, and the computer program code means is configured to implement the steps of the washing machine efficient and silent control method as described above when executed by a computer or a processor.

[0074] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0075] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0076] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a computer-readable storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0077] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A high-efficiency and quiet control method for a washing machine, characterized in that: The efficient and silent control method for a washing machine comprises: In response to a washing function of the washing machine, obtaining a current direct-axis voltage and a current quadrature-axis voltage of a driving motor in the washing machine; Determining a final direct-axis voltage of the driving motor according to a preset high-frequency voltage signal and the current direct-axis voltage, and determining a washing start angle and a washing driving speed of the driving motor according to the final direct-axis voltage and the current quadrature-axis voltage; The driving motor is driven to rotate the motor angle according to the washing driving speed to perform a washing operation of the washing machine.

2. The efficient and silent control method for a washing machine as claimed in claim 1, characterized in that: The step of obtaining the current direct-axis voltage and the current quadrature-axis voltage of the driving motor in the washing machine comprises: A current direct-axis current and a current quadrature-axis current of a driving motor in the washing machine are obtained, and proportional-integral control is performed on the current direct-axis current and the current quadrature-axis current respectively to obtain a current direct-axis voltage corresponding to the current direct-axis current and a current quadrature-axis voltage of the current quadrature-axis current.

3. The efficient and silent control method for a washing machine according to claim 1, characterized in that: The step of determining the washing start angle and the washing driving speed of the driving motor according to the final direct-axis voltage and the current quadrature-axis voltage comprises: Determine the motor direct axis corresponding to the final direct axis voltage and the motor quadrature axis corresponding to the current quadrature axis voltage, and use the angle between the motor direct axis and the motor quadrature axis as the rotor position angle of the drive motor; Performing a matrix operation according to the rotor position angle, the final direct-axis voltage and the current quadrature-axis voltage to obtain a first-phase voltage component and a second-phase voltage component of the drive motor in a two-phase stationary coordinate system; A washing start angle and a washing driving speed of the driving motor are determined according to the first phase voltage component and the second phase voltage component.

4. The efficient and silent control method for a washing machine as claimed in claim 3, characterized in that: The step of determining the washing start angle and the washing driving speed of the driving motor according to the first phase voltage component and the second phase voltage component comprises: Performing sinusoidal pulse width modulation according to the first phase voltage component and the second phase voltage component to obtain a three-phase current of the drive motor, and converting the three-phase current into a first phase current component and a second phase current component of the drive motor in the two-phase stationary coordinate system; The washing driving speed of the driving motor is determined according to the first phase current component, and the washing starting angle of the driving motor is determined according to the second phase current component.

5. The efficient and silent control method for a washing machine as claimed in claim 4, characterized in that: The step of determining the washing driving speed of the driving motor according to the first phase current component comprises: A first-phase high-frequency current corresponding to the first-phase current component is determined, and a phase-locked loop control is performed according to the first-phase high-frequency current to obtain a washing driving speed of the driving motor.

6. The efficient and silent control method for a washing machine as claimed in claim 4, characterized in that: The step of determining the washing start angle of the driving motor according to the second phase current component comprises: The second-phase high-frequency current corresponding to the second-phase current component is determined, and a phase-locked loop control is performed according to the second-phase high-frequency current to obtain a washing start angle of the driving motor.

7. A high-efficiency silent control device for a washing machine, characterized in that: The high-efficiency and quiet control device for a washing machine comprises: A response module, configured to obtain a current direct-axis voltage and a current quadrature-axis voltage of a driving motor in the washing machine in response to a washing function of the washing machine; a parameter determination module, configured to determine a final direct-axis voltage of the drive motor according to a preset high-frequency voltage signal and the current direct-axis voltage, and to determine a washing start angle and a washing drive speed of the drive motor according to the final direct-axis voltage and the current quadrature-axis voltage; The driving module is used to drive the driving motor to rotate the motor angle according to the washing driving speed to perform the washing operation of the washing machine.

8. A washing machine high-efficiency silent control device, characterized in that: The washing machine efficient and silent control device includes a memory, a processor, and a washing machine efficient and silent control program stored in the memory and executable on the processor. When the processor executes the washing machine efficient and silent control program, the steps of the washing machine efficient and silent control method as described in any one of claims 1 to 6 are implemented.

9. A medium, characterized in that The medium is a computer-readable storage medium, on which a washing machine efficient and silent control program is stored. When the washing machine efficient and silent control program is executed by a processor, the steps of the washing machine efficient and silent control method as described in any one of claims 1 to 6 are implemented.

10. A computer product, characterized in that: The computer product comprises a computer program, which contains computer program code means stored on a computer-readable medium or carrier wave, and the computer program code means is configured to implement the steps of the efficient and silent control method for a washing machine as claimed in any one of claims 1 to 6 when executed by a computer or a processor.

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