Clothes airing machine and drying control system and method thereof

Abstract

The invention discloses a clothes airing machine and a drying control system and method thereof. According to the method, the target air outlet temperature of a heating module is determined; the current air outlet temperature of a heating module of the clothes airing machine is obtained; and according to the current air outlet temperature and the target air outlet temperature of the heating module, the operation power of the heating module is calculated through the drying model, so that the operation power of the heating module is adjusted, and the current air outlet temperature of the heating module is adjusted to the target air outlet temperature. According to the method, it is ensured that the temperature difference value can be rapidly corrected according to the difference value between the target air outlet temperature and the current air outlet temperature, and accurate control over the drying process is achieved.

Description

Technical Field

[0001] This application relates to the technical field of clothes dryers, and specifically provides a clothes dryer and its drying control system and method. Background Art

[0002] With the continuous progress of technology, people's requirements for the energy conservation, convenience, and intelligence of household appliances in daily life are getting higher and higher. First of all, the energy-saving drying function can significantly improve the clothes drying efficiency. Whether in the rainy season or the cold and gloomy weather in winter, the drying function of the electric clothes dryer can quickly dry the clothes, eliminating the need for long waiting for sunlight to dry, thus saving a lot of time. Moreover, the drying function of the clothes dryer also has a sterilization effect, ensuring the hygiene of the clothes and improving the health level of family life. In the prior art, many clothes dryers on the market have the drying function. The control principle of drying is to install a heater and a blower in the machine. However, the above can only control the on / off of the heater and cannot adjust the power of the heater, resulting in heat waste.

[0003] Therefore, how to adjust the power of the heater to avoid heat waste has become an urgent problem to be solved. Summary of the Invention

[0004] This application aims to provide a clothes dryer and its drying control system and method, aiming to solve the problem of adjusting the power of the heater to avoid heat waste.

[0005] According to the first aspect of the present disclosure, a drying control method for a clothes dryer is provided, including: determining the target outlet air temperature of the heating module; obtaining the current outlet air temperature of the heating module of the clothes dryer; calculating the operating power of the heating module through a drying model according to the current outlet air temperature and the target outlet air temperature of the heating module, so as to adjust the operating power of the heating module and adjust the current outlet air temperature of the heating module to the target outlet air temperature.

[0006] Optionally, the drying model is P = K P ×(A - B) + K i ×∫e(t)dt, where e(t) = (A - B); in the formula, P is the operating power, K P is the proportional gain, A is the target outlet air temperature, B is the current outlet air temperature, K i is the integral gain.

[0007] Optionally, when the current outlet air temperature is higher than or the same as the target outlet air temperature, the operating power of the heating module is 0, that is, when B ≥ A, then P = 0; when the current outlet air temperature is lower than the target outlet air temperature, the operating power of the heating module is output according to the drying model, that is, when B < A, then P = K P ×(A - B) + K i ×∫e(t)dt.

[0008] Optionally, the proportional gain is 0.5 to 1.5, that is, K P =0.5~1.5; integral gain is 0.2~0.5, that is, K i =0.2~0.5.

[0009] Optionally, the drying model is adjusted to: P = K P ×(AB)+K i ×∫e(t)dt+K d ×(de / dt), where e(t) = (AB); where P is the operating power, K P is the proportional gain, A is the target outlet air temperature, B is the current outlet air temperature, K i is the integral gain, K d is the differential gain, de / dt is the rate of change of the difference over time; by dynamically adjusting the proportional gain, integral gain and differential gain through the difference between the target outlet air temperature and the real-time monitoring of the current outlet air temperature, the operating power can be precisely controlled.

[0010] Optionally, in the drying model, a differential control term is also included. The calculation formula of the differential control term is: D = K d ×(de / dt); where K d =0.1~0.5; where D is the differential control term, which is used to predict the future trend of the difference change of the system, K d is the differential gain, which is the response degree to the rate of change of the difference, and de / dt is the rate of change of the difference over time, where the difference is the target outlet air temperature and the current outlet air temperature, that is, (AB).

[0011] Furthermore, the proportional gain, integral gain and differential gain are dynamically adjusted, which is the temperature compensation mechanism. The temperature compensation mechanism is implemented by automatically adjusting the proportional gain K when the ambient temperature changes beyond the preset threshold. P , integral gain K i and differential gain K d value; the specific adjustment formula is: KP'=KP×(1+α×ΔT), Ki'=Ki×(1+β×ΔT), Kd'=Kd×(1+γ×ΔT); where KP', Ki', Kd' are the adjusted proportional gain, integral gain and differential gain respectively, α, β, γ are temperature compensation coefficients, and ΔT is the ambient temperature change value.

[0012] According to a second aspect of the present disclosure, a drying control system for a clothes drying machine is provided, comprising a main control unit, a temperature detection unit and a heating module driving unit; the temperature detection unit is connected to the main control unit, and is used to detect current air outlet temperature information of the heating module of the clothes drying machine, and transmit the detected current air outlet temperature information to the main control unit; the main control unit is connected to the heating module driving unit, and is used to execute the above-mentioned drying control method for the clothes drying machine, and generate a heating driving signal according to the operating power calculated by the drying model; the heating module driving unit is connected to the heating module of the clothes drying machine, and is used to adjust the operating power of the heating module according to the heating driving signal sent by the main control unit, so that the current air outlet temperature of the heating module is adjusted to the target air outlet temperature.

[0013] Optionally, a safety protection module is also included. When it is detected that the working state of the heating module is abnormal, the power supply of the heating module is cut off through the heating module driving unit and an early warning is provided; the abnormal state includes but is not limited to abnormal temperature.

[0014] According to a third aspect of the present disclosure, a clothes drying machine is provided, comprising a main unit, wherein the main unit comprises any one of the above-mentioned drying control systems for the clothes drying machine.

[0015] In summary, compared with the prior art, the clothes drying machine and its drying control system and method provided by the present application provide a method that can adjust the proportional and integral gains according to the difference between the outlet air temperature and the target temperature monitored in real time, and control the operating power of the heating module, thereby achieving precise control of the drying process. This control method not only improves the drying efficiency, but also reduces unnecessary heat waste, further saving energy. In addition, through the differential gain and temperature compensation mechanism, the present application can adapt to changes in ambient temperature and ensure the stability and reliability of the drying process. In summary, the clothes drying machine and its drying control system and method of the present application meet the requirements of modern families for the intelligence and energy saving of clothes drying machines.

[0016] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in describing the embodiments of the present application are briefly introduced below.

[0018] Figure 1 A schematic flow chart of a drying control method for a clothes drying machine provided in an embodiment of the present application;

[0019] Figure 2 A schematic flow chart of another drying control method for a clothes drying machine provided in an embodiment of the present application;

[0020] Figure 3A hardware connection diagram of a drying control method for a clothes drying machine provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of a process flow of a clothes drying machine provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0023] If there are descriptions involving "first" or "second" in the embodiments of the present application, the descriptions of "first" or "second" are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0024] The present application provides a clothes drying machine and a drying control system and method thereof, such as Figure 1 A drying control method for a clothes drying machine provided in an embodiment of the present disclosure includes: determining a target air outlet temperature of a heating module; obtaining a current air outlet temperature of the heating module of the clothes drying machine; calculating an operating power of the heating module through a drying model according to the current air outlet temperature of the heating module and the target air outlet temperature, so as to adjust the operating power of the heating module and adjust the current air outlet temperature of the heating module to the target air outlet temperature.

[0025] The difference between the preset target air outlet temperature and the detected current air outlet temperature is the key basis for adjusting the operating power of the heating module. The difference is first input into the drying model. Through a series of complex algorithms and calculations, the model can accurately determine the operating power that the heating module should be adjusted to in order to achieve the target air outlet temperature. This process is real-time, which means that whenever a deviation between the current air outlet temperature and the target air outlet temperature is detected, the drying model will immediately calculate and output the corresponding power adjustment instruction. Specifically, when the current air outlet temperature is lower than the target air outlet temperature, the drying model will calculate the operating power that needs to be increased to ensure that the heating module can generate more heat, thereby increasing the air outlet temperature. In this way, the drying model can accurately adjust the operating power of the heating module according to the difference between the current air outlet temperature and the target air outlet temperature, so that the current air outlet temperature can quickly and stably reach the target air outlet temperature. This not only improves the drying efficiency of the clothes drying machine, but also ensures the stability and controllability of the drying process.

[0026] Among them, the drying model includes:

[0027] P=K P ×(AB)+K i ×∫e(t)dt, where e(t)=(AB);

[0028] In the formula, P is the operating power, K is P is the proportional gain, A is the target outlet air temperature, B is the current outlet air temperature, K i is the integral gain; the main control unit adjusts the operating power of the heating module according to the drying model.

[0029] Proportional control is a control method that generates control output based on the size of the difference. The basic principle is: the larger the difference, the greater the control output. Among them, (AB) represents the difference. The proportional gain Kp reflects the sensitivity of the control output to the difference. A larger Kp makes the system more sensitive and responds faster, but may cause system instability; a smaller Kp makes the system more stable, but may cause the system to respond slower.

[0030] Combined, the proportional gain of this application is 0.5 to 1.5, that is, K P =0.5~1.5; when K P =0.9, the target outlet air temperature is 55°C, the current outlet air temperature is 50°C, the difference is 5°C, and the proportional control output is 4.5 (i.e. 0.9×5). This control output is used to adjust the power of the heating module to speed up the temperature rise to the target outlet air speed.

[0031] Integral control is a control method that generates control output based on the accumulated value of the difference. The basic principle is: the greater the accumulated difference, the greater the control output. Continuing with the temperature control system example above, the integral gain of this application is 0.2~0.5, that is, K i = 0.2~0.5, if there is a continuous difference in the system, the integral control will continue to accumulate these differences and generate corresponding control outputs to eliminate these differences. Assume that the integral gain K i If it is set to 0.3 and the difference remains at 1°C for a period of time, the control output e(t) will increase with the increase of time t. This control output will be used to continuously adjust the power of the heating module to eliminate the continuous difference and reach a stable state.

[0032] By combining these two control methods, a balance between system stability and response speed can be achieved. Table 1 shows the measurement results of the drying experiment book of the traditional rated power control method, where the drying time and total power consumption are laboratory measurement data. It can be clearly seen that the higher the PTC operating power, the faster the clothes will dry.

[0033] Table 1

[0034]

[0035]

[0036] In Table 1, we can see that as the PTC operating power increases, the time required to dry clothes gradually decreases, while the total power consumption increases accordingly. For example, when the PTC operating power is 0 watts, that is, only the fan is turned on, it takes 180 minutes to dry clothes, and the total power consumption is 0.2 kWh; when the power is increased to 150 watts, the drying time is shortened to 172 minutes, and the total power consumption increases to 0.6 kWh. This trend continues to appear in the table until the PTC operating power reaches 300 watts, the drying time is further shortened to 164 minutes, and the total power consumption is 1 kWh. Table 1 selects 0 to 3000 watts and records the drying time and total power consumption. In this way, users can choose the appropriate power setting according to actual needs to achieve the purpose of drying clothes quickly and saving energy.

[0037] Table 2 shows the case of drying the same clothes using the present application. The time used is the drying time in Table 2, the total power measured is the total operating power in Table 2, and the target air outlet temperature is the target setting temperature in Table 2, which is 40°C to 60°C, which is also more in line with the general temperature setting for drying clothes.

[0038] Table 2

[0039]

[0040]

[0041] Therefore, by comparing the two tables, it can be obtained that Table 1 is the drying parameters of the rated operating power, that is, the power consumption under normal conditions, and Table 2 is the drying parameters using the drying control method in this application. Therefore, within the same or similar time, and when the clothes are in a dried state, the drying control method of this application can significantly reduce energy consumption. By comparing the same or similar time in Table 1 and Table 2, it can be concluded that using this application saves electricity by nearly 0.3 - 0.4 degrees compared with the conventional method. For example, when the target set temperature is 55°C, the drying time of the clothes is shortened to 80 minutes, and the total operating power is 2.5 kWh. Compared with the traditional method, 0.3 kWh of electricity is saved. This shows that by precisely controlling the temperature and power output during the drying process, not only can the drying quality of the clothes be guaranteed, but also energy consumption can be effectively reduced, achieving the purpose of energy conservation and emission reduction.

[0042] The definition of the dryness degree of clothes is that the moisture inside the clothes is effectively removed, the touch is dry, and there is no longer a feeling of dampness. The determination of clothes drying is that parameters such as temperature and humidity are detected to reach the preset values, and the changes of these parameters can reflect the drying state of the clothes. In practical applications, it is possible to comprehensively judge whether the clothes have been dried by observing the appearance and touch of the clothes after drying and using a humidity measurement tool.

[0043] As Figure 2 shown, when the current outlet air temperature is higher than or the same as the target outlet air temperature, the operating power of the heating module is 0, that is, when B ≥ A, then P = 0; when the current outlet air temperature is lower than the target outlet air temperature, the operating power of the heating module is output according to the drying model, that is, when B < A, then P = K P ×(A - B) + K i ×∫e(t)dt.

[0044] The heating module generally includes a PTC heating element. Through an intelligent control algorithm, it is ensured that after the drying cycle ends, the waste heat of the PTC heating element is fully utilized. This waste heat utilization can reduce energy waste, and it can also help to quickly reduce the temperature of the clothes, avoid damage to the clothes caused by overheating, so as to achieve the best drying effect and energy-saving effect. In this way, the clothes dryer not only improves the drying efficiency, but also extends the service life of the PTC heating element and reduces the maintenance cost.

[0045] In the drying model, there is also a differential control term, and the drying model is adjusted to P = K P ×(A - B) + K i ×∫e(t)dt + K d×(de / dt), where e(t) = (AB); where P is the operating power, K P is the proportional gain, A is the target outlet air temperature, B is the current outlet air temperature, K i is the integral gain, K d is the differential gain, de / dt is the rate of change of the difference over time; by dynamically adjusting the proportional gain, integral gain and differential gain through the difference between the target outlet air temperature and the real-time monitoring of the current outlet air temperature, the operating power can be precisely controlled.

[0046] The calculation formula of the differential control term is: D = K d ×(de / dt); where K d =0.1~0.5;

[0047] In the formula, D is the differential control term, which is used to predict the future trend of the difference of the system, and K d is the differential gain, which is the response degree to the rate of change of the difference, and de / dt is the rate of change of the difference over time, where the difference is the target outlet air temperature and the current outlet air temperature, that is, (AB).

[0048] The differential control term is used to improve the stability and predictability of the drying process. In actual applications, temperature fluctuations may occur during the drying process due to factors such as ambient temperature and humidity. The differential control term can predict and adjust the output of the heating module in a timely manner by responding to the rate of change of the difference, thereby reducing temperature fluctuations and ensuring a smooth drying process. When the rate of change of the difference over time is large, the differential control term will increase the control output to quickly respond to temperature changes, and vice versa, it will reduce the control output to avoid system oscillations caused by over-adjustment.

[0049] In the embodiment of the present application, the value range of the differential gain Kd is 0.1 to 0.5. This range is obtained through experiments and optimization, and is intended to ensure that the differential control term can effectively predict the temperature change trend without causing excessive oscillations to the system. For example, when the Kd value is 0.3, if the difference change rate de / dt is large, it indicates that the temperature changes rapidly. At this time, the differential control term D will increase accordingly, thereby increasing the control output and quickly adjusting the power of the heating module to stabilize the drying process. On the contrary, if the difference change rate is small, the differential control term D will decrease, reducing the adjustment of the heating module power and avoiding unnecessary system oscillations.

[0050] Therefore, the drying control method of the clothes drying machine provided in the present application realizes precise control of the drying process by combining proportional control, integral control and differential control. This control method not only improves the drying efficiency and ensures the drying quality, but also effectively prolongs the service life of the PTC heating element and reduces energy consumption, and has significant practical value and economic benefits.

[0051] Dynamically adjust the proportional gain, integral gain and differential gain, which is the temperature compensation mechanism. The temperature compensation mechanism is implemented by automatically adjusting the proportional gain K when the ambient temperature changes beyond the preset threshold. P , integral gain K i and differential gain K d The specific adjustment formula is: KP'=KP×(1+α×ΔT), Ki'=Ki×(1+β×ΔT), Kd'=Kd×(1+γ×ΔT), where KP', Ki', Kd' are the adjusted proportional gain, integral gain and differential gain respectively, α, β, γ are temperature compensation coefficients, and ΔT is the ambient temperature change value.

[0052] In practical applications, the determination of the three temperature compensation coefficients α, β, and γ needs to be accurately calculated based on the characteristics of the PTC heating element and the dynamic response of the drying process. Usually, the selection of these coefficients will be optimized through experimental data to ensure that the control system can quickly and accurately adjust the operating power under different ambient temperature changes, so as to achieve the ideal drying effect. In addition, in order to further improve the adaptability and robustness of the control system, intelligent control algorithms such as fuzzy logic or neural networks can be introduced to dynamically adjust the temperature compensation coefficient to cope with more complex and changeable drying environments.

[0053] The present application also includes monitoring the humidity during the drying process. According to the set humidity threshold, the heating module automatically starts and stops to maintain the humidity at the air outlet within an appropriate range.

[0054] During the drying process, humidity monitoring and control are equally important. If the humidity at the air outlet exceeds the set threshold, the system will automatically start the heating module to increase the heat during the drying process, thereby reducing the humidity. On the contrary, if the humidity is below the threshold, the heating module will stop working to prevent over-drying. This automatic start-stop mechanism ensures that the clothes will not be damaged due to over-wetness or over-dryness during the drying process, while also saving energy. The introduction of humidity control makes the drying control system of the clothes drying machine more intelligent and user-friendly, meeting users' higher requirements for drying quality.

[0055] The present application also provides a drying control system for a clothes drying machine, comprising a main control unit, a temperature detection unit and a heating module driving unit; the temperature detection unit is connected to the main control unit, and is used to detect the current air outlet temperature information of the heating module of the clothes drying machine, and transmit the detected current air outlet temperature information to the main control unit; the main control unit is connected to the heating module driving unit, and is used for the above-mentioned drying control method of the clothes drying machine, and generates a heating driving signal according to the operating power calculated by the drying model; the heating module driving unit is connected to the heating module of the clothes drying machine, and is used to adjust the operating power of the heating module according to the heating driving signal sent by the main control unit, so that the current air outlet temperature of the heating module is adjusted to the target air outlet temperature.

[0056] The main control unit monitors the ambient temperature in real time through the temperature detection unit, and dynamically adjusts the power output of the heating module according to the detected temperature value. This real-time monitoring and dynamic adjustment mechanism ensures more precise temperature control during the drying process, while reducing the problem of unstable drying effect caused by ambient temperature fluctuations.

[0057] The main control unit also has a fault diagnosis function, which can promptly detect and handle abnormal situations in the drying process, such as temperature sensor failure, heating module non-operating, etc., thereby ensuring the continuity and safety of the drying process.

[0058] The drying control system also includes a safety protection module. When it is detected that the working state of the heating module is abnormal, the power supply of the heating module is cut off through the heating module driving unit and an early warning is provided; the abnormal state includes but is not limited to abnormal temperature.

[0059] In practical applications, the drying control system of the present application can also have the function of intelligently identifying clothing. For example, for lighter or thinner clothing, the system will automatically reduce the drying time, and for heavier or thicker clothing, the drying time will be appropriately extended to ensure that the clothing is dried evenly and without damage. In addition, the system can also monitor the humidity and temperature of the drying environment in real time through built-in sensors, and automatically adjust the power output of the heating module to maintain a constant temperature and humidity state during the drying process, thereby improving the drying efficiency and the drying quality of clothing.

[0060] In order to further optimize the drying effect, in addition to the heating module, a technology for dynamically adjusting the air volume is also introduced. The system automatically adjusts the fan speed according to the drying progress of the clothes and the humidity changes in the drying chamber, thereby ensuring that the coordination of air volume and temperature during the drying process reaches the best state. This technology can not only shorten the drying cycle, but also reduce the wrinkles and damage of clothes, and improve the quality of clothes after drying.

[0061] In addition, in order to further enhance the user experience, the clothes drying control system of the present application may also include a user interface that allows users to set different drying modes according to different clothing types and drying requirements. For example, users can choose a quick drying mode to shorten the drying time, or choose a gentle drying mode to protect sensitive clothing from damage. The setting of the user interface enables users to operate the clothes drying machine more intuitively and conveniently, and the system can automatically adjust the drying parameters according to the user's selection to achieve the best drying effect. It is also equipped with intelligent networking functions. Users can remotely control the dryer through a mobile phone application, view the drying status in real time, and even receive notifications after drying is completed. In addition, the system can automatically learn and optimize the drying program according to the user's usage habits and preferences to provide users with a personalized drying experience.

[0062] To sum up, the clothes drying control system of the present application provides users with efficient, safe, convenient and personalized drying solutions through intelligent control, fault diagnosis, safety protection, dynamic adjustment of air volume, and integration of intelligent networking and user interface.

[0063] The present application also provides a clothes drying machine, comprising a main unit, wherein the main unit comprises any one of the above-mentioned clothes drying machine drying control systems.

[0064] The clothes drying machine includes a drying control system, which includes a main control unit, such as Figure 3As shown, the main control unit includes any of the above-mentioned drying control methods for clothes drying machines, the temperature detection unit is an NTC detection circuit, wherein NTC (Negative Temperature Coefficient Thermistor) is a thermistor, the NTC detection circuit includes NTC, NTC is set at the air outlet of the clothes drying machine, and the temperature detection is achieved by measuring the different resistance values ​​of NTC at different temperatures. The detection circuit detects the resistance value of NTC and obtains the actual temperature through data conversion of the main control unit. The heating module driving module is a PTC driving circuit, the PTC driving circuit includes PTC, PTC is set at the air outlet of the clothes drying machine, and its working principle is that the NTC detection circuit can convert the resistance value of the NTC detection probe into a voltage value, and the main control unit converts the voltage value into a temperature value. The PTC driving circuit has a power adjustment function, which allows the PTC to work at different powers. In this way, the PTC driving circuit can automatically adjust the power output of the PTC according to the temperature information provided by the main control unit, thereby realizing precise control of the drying process. When the detected temperature is lower than the set drying temperature, the PTC drive circuit will increase power output to improve drying efficiency; conversely, when the temperature exceeds the set value, the PTC drive circuit will reduce power output to prevent overheating and ensure the safety of the drying process. In addition, the system also has a self-diagnosis function that can monitor the working status of circuits and components in real time. Once an abnormality is found, the system will automatically take protective measures, such as cutting off the power supply, to avoid the expansion of the fault and ensure the safety of the user. The user interface provides an intuitive operation method. Users can set the drying mode and temperature according to their personal needs, and the system will automatically execute the corresponding drying program to achieve intelligent operation.

[0065] like Figure 4 As shown, the main control unit of the clothes drying machine stores the following steps: S01, determining the target air outlet temperature of the heating module; S02, obtaining the current air outlet temperature of the heating module of the clothes drying machine; S03, calculating the operating power of the heating module through the drying model according to the current air outlet temperature and the target air outlet temperature of the heating module, constructing the drying model, and obtaining the output parameters of the heating module; calculating the difference between the target air outlet temperature and the current air outlet temperature, and performing proportional-integral control algorithm calculation to adjust the operating parameters of the heating module until the difference between the target air outlet temperature and the current air outlet temperature meets the target value; the drying model includes: P = K P ×(AB)+K i ×∫e(t)dt, where e(t)=(AB), where P is the operating power, K P is the proportional gain, A is the target outlet air temperature, B is the current outlet air temperature, K iwhere \(S_0\) is the integral gain; \(S_04\), the main control unit adjusts the operating power of the heating module according to the drying model; \(S_05\), continuously monitors the outlet air temperature, determines the magnitude relationship between the current outlet air temperature value and the target outlet air temperature value, and then adjusts the operating power of the heating module, that is, when the current outlet air temperature is higher than or equal to the target outlet air temperature, the operating power of the heating module is 0, that is, when \(B\geq A\), then \(P = 0\); when the current outlet air temperature is lower than the target outlet air temperature, the operating power of the heating module is output according to the drying model, that is, when \(B < A\), then \(P=K\times(A - B)+K\times\int e(t)dt\); ensure that it is maintained within the target outlet air temperature range; if an abnormal situation occurs, execute the self-diagnosis function and take corresponding protection measures. P ×(A - B)+K i ×∫e(t)dt; Ensure that it is maintained within the target outlet air temperature range; If an abnormal situation occurs, execute the self-diagnosis function and take corresponding protection measures.

[0066] In addition to being stored in the main control unit, the above method can also be provided on a storage medium. The embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored. When the computer program is loaded and executed by a processor, the drying control method of any one of the above is adopted.

[0067] Among them, the computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (Random Access Memory, RAM), read-only memory (Read-Only Memory, ROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, EPROM), registers, hard disks, optical fibers, portable compact disc read-only memory (Compact Disc Read-Only Memory, CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above, or any other form of computer-readable storage medium well-known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuit, ASIC). In the embodiment of the present application, the computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device, or component.

[0068] Although the present application has been depicted and described as a method with drying adjustment, it should be understood that various changes, modifications and equivalent substitutions can be made to the present application without departing from the spirit and scope of the present application. Therefore, for those skilled in the relevant art, after understanding the basic ideas and specific implementation methods of the present application, many possible changes, modifications and equivalent substitutions can be made, and these changes, modifications and equivalent substitutions should be regarded as belonging to the protection scope of the present application.

Claims

1. A drying control method for a clothes drying machine, characterized in that: include: Determine the target air outlet temperature of the heating module; Get the current air outlet temperature of the clothes drying machine heating module; According to the current air outlet temperature and the target air outlet temperature of the heating module, the operating power of the heating module is calculated through the drying model to adjust the operating power of the heating module and adjust the current air outlet temperature of the heating module to the target air outlet temperature.

2. The drying control method of the clothes drying machine according to claim 1, characterized in that: The drying model is P = K P ×(A - B) + K i ×∫e(t)dt, where e(t) = (A - B); In the formula, P is the operating power, K is P is the proportional gain, A is the target outlet air temperature, B is the current outlet air temperature, K i is the integral gain.

3. The drying control method of the clothes drying machine according to claim 2, characterized in that: When the current outlet air temperature is higher than or equal to the target outlet air temperature, the operating power of the heating module is 0, that is, when B ≥ A, then P = 0; When the current outlet air temperature is lower than the target outlet air temperature, the operating power of the heating module is output according to the drying model, that is, when B < A, then P = K P ×(A - B) + K i ×∫e(t)dt 4. The drying control method of the clothes drying machine according to claim 2, characterized in that: The proportional gain is 0.5 to 1.5, that is, K P =0.5~1.5; The integral gain is 0.2 to 0.5, that is, K i =0.2~0.

5.

5. The drying control method of the clothes drying machine according to claim 2, characterized in that: In the drying model, a differential control term is also included; The drying model is adjusted to P = K P ×(A - B)+K i ×∫e(t)dt+K d ×(de / dt), where e(t) = (A - B); In the formula, P is the operating power, K is P is the proportional gain, A is the target outlet air temperature, B is the current outlet air temperature, K i is the integral gain, K d is the differential gain, de / dt is the rate of change of the difference over time; By dynamically adjusting the proportional gain, integral gain and differential gain through the difference between the target outlet air temperature and the real-time monitoring of the current outlet air temperature, the operating power can be precisely controlled.

6. The drying control method of the clothes drying machine according to claim 5, characterized in that: The calculation formula of the differential control term is: D=K d ×(de / dt); where K d =0.1~0.5; In the formula, D is the differential control term, which is used to predict the future trend of the difference of the system, and K d is the differential gain, which is the response degree to the rate of change of the difference, and de / dt is the rate of change of the difference over time, where the difference is the target outlet air temperature and the current outlet air temperature, that is, (AB).

7. The drying control method of a clothes drying machine according to claim 5, characterized in that: The dynamic adjustment of proportional gain, integral gain and differential gain is a temperature compensation mechanism. The implementation of the temperature compensation mechanism is to automatically adjust the proportional gain K when the ambient temperature changes beyond a preset threshold. P , integral gain K i and differential gain K d The value of The specific adjustment formula is: KP'=KP×(1+α×ΔT), Ki'=Ki×(1+β×ΔT), Kd'=Kd×(1+γ×ΔT); Where KP', Ki', Kd' are the adjusted proportional gain, integral gain and differential gain respectively, α, β, γ are the temperature compensation coefficients, and ΔT is the ambient temperature change value.

8. A drying control system for a clothes drying machine, characterized in that: It includes a main control unit, a temperature detection unit and a heating module driving unit; The temperature detection unit is connected to the main control unit, and is used to detect the current air outlet temperature information of the heating module of the clothes drying machine, and transmit the detected current air outlet temperature information to the main control unit; The main control unit is connected to the heating module driving unit, and is used to execute the drying control method of the clothes drying machine according to any one of claims 1 to 7, and generate a heating driving signal according to the operating power calculated by the drying model; The heating module driving unit is connected to the clothes drying machine heating module and is used to adjust the operating power of the heating module according to the heating driving signal sent by the main control unit, so that the current air outlet temperature of the heating module is adjusted to the target air outlet temperature.

9. The drying control system of the clothes drying machine according to claim 8, characterized in that: It also includes a safety protection module, which, when detecting that the working state of the heating module is abnormal, cuts off the power supply of the heating module through the heating module driving unit and provides an early warning; The abnormal state includes but is not limited to abnormal temperature.

10. A clothes drying machine, characterized in that: It comprises a host, and the host comprises the drying control system of the clothes drying machine according to any one of claims 8 to 9.

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