A spin control method of a washing machine

Abstract

The application relates to the technical field of washing machine dehydration control, and provides a dehydration control method of a washing machine, which comprises the following steps: presetting k gears; determining a target rotating speed and a target eccentricity upper limit according to a target gear of dehydration; entering a target gear access control stage: under the condition that the actual front-end correction execution times are less than or equal to the front-end correction upper limit, cyclically executing front-end correction and updating the actual eccentricity; if the actual eccentricity is less than or equal to the target eccentricity upper limit, the washing machine is dehydrated at the target rotating speed; if the front-end correction actual execution times are greater than the front-end correction upper limit and the actual eccentricity is greater than the target eccentricity upper limit, a highest safety gear decision stage is entered: a highest safety gear is found, and the eccentricity upper limit of the next gear of the highest safety gear is less than the actual eccentricity and is less than or equal to the eccentricity upper limit of the highest safety gear. The application solves the technical problem of poor dehydration effect of a traditional washing machine.

Description

Technical Field

[0001] This application relates to the field of washing machine control technology, and more specifically, to a method for controlling the spin-drying of a washing machine. Background Technology

[0002] The market demand for drum washing machines is gradually increasing, and the quality requirements for them are also rising. For drum washing machines, users prefer quick spin-drying and high rotation speeds to achieve the goal of low moisture content. However, due to their structural characteristics, during the research and development phase, for certain operating conditions, quickly completing spin-drying and achieving high drum rotation speeds are contradictory in terms of safety and various standards.

[0003] In traditional washing machines, if the actual eccentricity exceeds the limit during the spin-drying process, a fixed number of pre-set correction cycles will be performed. If the actual eccentricity still exceeds the limit after the pre-set number of correction cycles has been exhausted, the machine will be forced to reduce the spin speed to the lowest setting (e.g., 400 rpm), resulting in high moisture content in the clothes and a longer drying time.

[0004] Therefore, the traditional washing machine spin-drying control method, when the actual eccentricity exceeds the standard and the spin-drying speed is still unable to be corrected, forces the spin-drying to the lowest speed, resulting in poor spin-drying effect. This is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] The information disclosed in the background section is only intended to enhance the understanding of the background of this application, and therefore may contain information that is not part of the prior art known to those skilled in the art. Summary of the Invention

[0006] This application provides a spin-drying control method for a washing machine to solve the technical problem that traditional washing machine spin-drying control methods, when the actual eccentricity exceeds the standard and the spin-drying speed is forcibly reduced to the lowest speed, resulting in poor spin-drying effect.

[0007] This application provides a method for controlling the spin-drying of a washing machine, comprising the following steps:

[0008] There are k preset dehydration speeds, each corresponding to an increasing rotational speed. < <...< and the upper limit of decreasing eccentricity > >…> Where k≥3;

[0009] The maximum number of preset correction attempts is a fixed value, and the maximum number of front-end correction attempts is also a fixed value.

[0010] Determine the target rotation speed and the upper limit of the target eccentricity based on the target dehydration level;

[0011] Entering the target gear access control phase:

[0012] If the actual number of front-end corrections is less than or equal to the upper limit of the number of front-end corrections, perform front-end corrections in a loop and update the actual eccentricity:

[0013] If the actual eccentricity at any time is less than or equal to the upper limit of the target eccentricity, then the dehydration will be carried out at the target rotational speed.

[0014] If the actual number of front-end corrections is greater than the upper limit of the number of front-end corrections and the actual deviation is greater than the upper limit of the target deviation, then the decision-making stage of the highest safety level will be entered.

[0015] Maximum safety gear decision stage: Find the maximum safety gear. The upper limit of the eccentricity of the next gear below the maximum safety gear < the actual eccentricity ≤ the upper limit of the eccentricity of the maximum safety gear.

[0016] During implementation, the decision-making stage for the highest safety level includes the following steps:

[0017] Assign a value to the maximum number of backend corrections. The maximum number of backend corrections = the upper limit of the total number of corrections - the actual number of frontend corrections executed.

[0018] If the actual number of backend corrections is less than or equal to the maximum number of backend corrections, the backend corrections are executed repeatedly and the actual eccentricity is updated.

[0019] Continue until the highest safe setting is found.

[0020] During implementation, two speed thresholds are preset. , and < The rotational speed is divided into low-speed, medium-speed, and high-speed ranges. The corresponding upper limit of eccentricity is used express, The corresponding upper limit of eccentricity is used express;

[0021] The maximum number of total correction attempts is used This indicates the maximum number of front-end correction attempts. This indicates the maximum number of correction attempts required for severely eccentric front-end systems. This is a fixed value, representing the upper limit of the number of corrections required at the front end for moderate eccentricity. It is a constant; where:

[0022] = + .

[0023] During implementation, the steps in the target gear access control phase specifically include:

[0024] Step S1: Perform front-end correction and obtain the actual eccentricity. ;

[0025] Step S2: Determine ≤ Whether it is valid, The upper limit of the target eccentricity;

[0026] like ≤ If true, then the target rotational speed is used. Dehydration;

[0027] like > Then proceed to step S3;

[0028] Step S3: Determine > Is it valid?

[0029] like > If established, then proceed to step S31;

[0030] Step S31:

[0031] Total number of times severe front-end deviation correction was actually executed ;

[0032] Step S32: Determine ≤ Is it valid?

[0033] like ≤ If the condition is met, return to step S1;

[0034] exist > In this case, the process proceeds to step S33 of the highest safety level decision-making stage.

[0035] During implementation, the decision-making stage for the highest safety level specifically includes:

[0036] Step S33:

[0037] = - - ; where, the actual number of times the front-end correction was executed = + ;

[0038] Step S34: Correct the actual number of executions in the backend. ≤ Under these conditions, the backend jitter correction is executed repeatedly and updated. Each update Afterwards, and , ... Compare them separately;

[0039] Until found: < ≤ Then x+1 is the highest safety level. This is the highest safe speed setting.

[0040] In implementation, in step S34, According to self , Compare them in the order of ...

[0041] During implementation, in the target gear access control phase, the judgment is made in step S3. > When is it true:

[0042] like ≤ Then proceed to step S4;

[0043] Step S4: Determine > Is it true or false?

[0044] like > If successful, proceed to step S41;

[0045] Step S41:

[0046] Total number of times the front-end correction for moderate eccentricity was actually executed ;

[0047] Step S42: Determine ≤ Is it valid?

[0048] exist ≤ If the condition is met, return to step S1;

[0049] exist > In the case of [the situation], step S43 of the highest safety level decision phase is executed.

[0050] During implementation, the decision-making stage for the highest safety level specifically includes:

[0051] Step S43:

[0052] = - - ;

[0053] Step S44: In ≤ Under these conditions, the backend jitter correction is executed repeatedly and updated. Each update Afterwards, Compare with the upper limit of the eccentricity corresponding to each gear in the mid-speed range;

[0054] Until found: < ≤ If x+1 is the highest safe gear, then x is the value of the gear in the mid-speed range.

[0055] In implementation, in step S44, The comparison is performed in the order of the upper limit of eccentricity in the high gear within the mid-speed range to the upper limit of eccentricity in the low gear within the mid-speed range.

[0056] During implementation, in the target gear access control phase, the judgment is made in step S4. > When is it true:

[0057] like ≤ Then, step S51 of the highest safety level decision stage will be executed;

[0058] The decision-making stage for the highest safety level also includes:

[0059] Step S51:

[0060] = - - ;

[0061] Step S52: In ≤ Under these conditions, the backend jitter correction is executed repeatedly and updated. Each update Afterwards, Compare with the upper limit of eccentricity for each gear in the high-speed range:

[0062] Until found: < ≤ If x+1 is the highest safe gear, then x is the value of the gear in the high speed range.

[0063] In implementation, in step S52, The comparison is performed in the order of the upper limit of the eccentricity of the higher gear in the high-speed range to the upper limit of the eccentricity of the lower gear in the high-speed range.

[0064] The embodiments of this application, by adopting the above technical solutions, have the following technical effects:

[0065] The washing machine spin-drying control method provided by this invention significantly improves the safety, stability, and efficiency of the spin-drying process by introducing a collaborative matching mechanism between multi-speed settings and the upper limit of eccentricity, combined with a phased correction strategy (target speed access control stage and maximum safety speed decision stage). Specific technical effects are as follows:

[0066] Enhancing spin-drying stability and safety: By pre-setting k (k≥3) spin-drying levels, each level corresponds to an increasing rotational speed and a decreasing upper limit of eccentricity, a safety constraint logic of "high rotational speed requires low eccentricity" is achieved. This design effectively prevents severe vibration or machine tipping caused by uneven distribution of clothing, ensuring that appropriate safe spin-drying parameters can be selected under different load conditions.

[0067] Optimize the allocation of correction resources: Set a dual limit with a fixed upper limit on the total number of corrections and a fixed upper limit on the number of front-end corrections. This prevents infinite correction loops from causing program lag or excessive user waiting time, while ensuring that sufficient opportunities for clothing redistribution are given before critical speed increases (i.e., the target gear entry stage).

[0068] Intelligent target gear access control is implemented: During the target gear access phase, priority is given to attempting to meet the target gear requirement (i.e., actual eccentricity ≤ target eccentricity limit) through a limited number of front-end corrections (i.e., the upper limit of the number of front-end corrections). If the front-end correction fails, it automatically downgrades to the "highest safe gear," that is, selecting the highest speed gear with acceptable eccentricity among all gears below the target speed for dehydration. This strategy avoids directly terminating dehydration or reducing to the lowest speed due to a single instance of excessive eccentricity, significantly improving adaptability and dehydration consistency under different load conditions.

[0069] Enhance system robustness and fault tolerance: When front-end correction fails (i.e., the actual number of front-end corrections exceeds the upper limit of the number of front-end corrections and the actual eccentricity exceeds the upper limit of the target eccentricity), the system automatically enters the highest safety level decision stage. It can select the second-best but stable dehydration level based on the remaining safety margin to avoid complete dehydration failure and ensure user experience.

[0070] Balancing dehydration efficiency with garment protection: By dynamically matching the rotation speed and eccentricity tolerance, the system uses the highest possible rotation speed to complete the dehydration process while ensuring safety, thus shortening the dehydration time and reducing mechanical damage to garments caused by frequent start-stop or inefficient operation.

[0071] The washing machine spin-drying control method of this application realizes intelligent and precise control of the spin-drying process, maximizes spin-drying efficiency and improves user satisfaction while ensuring safe operation, and has good engineering practicality and promotion value. Attached Figure Description

[0072] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0073] Figure 1 This is a schematic diagram showing the gear position, rotation speed, and upper limit of eccentricity of the spin-drying control method for a washing machine according to an embodiment of this application.

[0074] Figure 2 This is a flowchart of a washing machine spin-drying control method according to an embodiment of this application. Detailed Implementation

[0075] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0076] Example 1

[0077] like Figure 1 , Figure 2 As shown, the spin-drying control method of the washing machine according to an embodiment of this application includes the following steps:

[0078] There are k preset dehydration speeds, each corresponding to an increasing rotational speed. < <...< and the upper limit of decreasing eccentricity > >…> Where k≥3;

[0079] The maximum number of preset correction attempts is a fixed value, and the maximum number of front-end correction attempts is also a fixed value.

[0080] Determine the target rotation speed and the upper limit of the target eccentricity based on the target dehydration level;

[0081] Entering the target gear access control phase:

[0082] If the actual number of front-end corrections is less than or equal to the upper limit of the number of front-end corrections, perform front-end corrections in a loop and update the actual eccentricity:

[0083] If the actual eccentricity at any time is less than or equal to the upper limit of the target eccentricity, then the dehydration will be carried out at the target rotational speed.

[0084] If the actual number of front-end corrections is greater than the upper limit of the number of front-end corrections and the actual deviation is greater than the upper limit of the target deviation, then the decision-making stage of the highest safety level will be entered.

[0085] Maximum safety gear decision stage: Find the maximum safety gear. The upper limit of the eccentricity of the gear below the maximum safety gear < the actual eccentricity ≤ the upper limit of the eccentricity of the maximum safety gear. The speed of the maximum safety gear is the highest speed lower than the target speed.

[0086] The safety in the highest safety setting refers to The maximum eccentricity of the highest safe gear is less than the maximum speed of the target gear. The highest speed of the highest safe gear is the highest speed that is lower than the target speed. This condition is guaranteed by the condition that the maximum eccentricity of the next gear below the highest safe gear is less than the actual eccentricity.

[0087] The washing machine spin-drying control method provided by this invention significantly improves the safety, stability, and efficiency of the spin-drying process by introducing a collaborative matching mechanism between multi-speed settings and the upper limit of eccentricity, combined with a phased correction strategy (target speed access control stage and maximum safety speed decision stage). Specific technical effects are as follows:

[0088] Enhancing spin-drying stability and safety: By pre-setting k (k≥3) spin-drying levels, each level corresponds to an increasing rotational speed and a decreasing upper limit of eccentricity, a safety constraint logic of "high rotational speed requires low eccentricity" is achieved. This design effectively prevents severe vibration or machine tipping caused by uneven distribution of clothing, ensuring that appropriate safe spin-drying parameters can be selected under different load conditions.

[0089] Optimize the allocation of correction resources: Set a dual limit with a fixed upper limit on the total number of corrections and a fixed upper limit on the number of front-end corrections. This prevents infinite correction loops from causing program lag or excessive user waiting time, while ensuring that sufficient opportunities for clothing redistribution are given before critical speed increases (i.e., the target gear entry stage).

[0090] Intelligent target gear access control is implemented: During the target gear access phase, priority is given to attempting to meet the target gear requirement (i.e., actual eccentricity ≤ target eccentricity limit) through a limited number of front-end corrections (i.e., the maximum number of front-end corrections). If front-end correction fails, the system automatically downgrades to the "highest safe gear," which is the highest speed gear with acceptable eccentricity among all gears below the target speed. This is achieved by limiting the eccentricity limit of the next gear below the highest safe gear to be less than the actual eccentricity limit of the highest safe gear. This strategy avoids directly terminating dehydration or reducing to the lowest speed due to a single instance of excessive eccentricity, significantly improving adaptability and consistency under different load conditions.

[0091] Enhance system robustness and fault tolerance: When front-end correction fails (i.e., the actual number of front-end corrections exceeds the upper limit of the number of front-end corrections and the actual eccentricity exceeds the upper limit of the target eccentricity), the system automatically enters the highest safety level decision stage. It can select the second-best but stable dehydration level based on the remaining safety margin to avoid complete dehydration failure and ensure user experience.

[0092] Balancing dehydration efficiency with garment protection: By dynamically matching the rotation speed and eccentricity tolerance, the system uses the highest possible rotation speed to complete the dehydration process while ensuring safety, thus shortening the dehydration time and reducing mechanical damage to garments caused by frequent start-stop or inefficient operation.

[0093] The washing machine spin-drying control method of this application realizes intelligent and precise control of the spin-drying process, maximizes spin-drying efficiency and improves user satisfaction while ensuring safe operation, and has good engineering practicality and promotion value.

[0094] exist Figure 1 The value of k is 5.

[0095] During implementation, such as Figure 2 As shown, the decision-making stage for the highest safety level includes the following steps:

[0096] Assign a value to the maximum number of backend corrections. The maximum number of backend corrections = the upper limit of the total number of corrections - the actual number of frontend corrections executed.

[0097] If the actual number of backend corrections is less than or equal to the maximum number of backend corrections, perform backend corrections repeatedly and update the actual eccentricity:

[0098] Until found: < ≤ ,but As the highest safety setting This represents the actual eccentricity; x is a value from 1, 2, 3, 4, 5, ..., k-1.

[0099] By introducing a back-end correction mechanism and a dynamic gear matching strategy in the "highest safety gear decision stage," the intelligence, safety, and success rate of dehydration control are further improved. The specific technical effects are as follows:

[0100] Precisely utilize remaining correction attempts: By setting the maximum number of backend correction attempts to equal the total correction attempt limit minus the actual number of frontend correction attempts, global planning and efficient allocation of correction attempt resources are achieved, avoiding duplicate or redundant operations and maximizing the correction success rate within a limited total number of attempts (i.e., the total correction attempt limit).

[0101] By setting the maximum number of backend correction attempts to "total correction attempts minus actual frontend correction attempts," correction resources can be dynamically allocated. While ensuring the overall maximum number of correction attempts remains unchanged, the remaining opportunities (maximum number of backend correction attempts) are fully utilized to redistribute clothing. This avoids abandoning optimization and forcibly spinning at the lowest speed due to frontend correction failures, thus selecting higher speed settings within safe boundaries to improve spin-drying efficiency.

[0102] To prevent spin-drying failure and improve user experience: Compared to traditional washing machines where the actual eccentricity exceeds the standard and the spin speed is forced to the lowest level (such as 400 rpm) to spin-dry, resulting in high moisture content of clothes and long drying time.

[0103] Even if the front-end correction fails to reach the target speed, this invention can still complete the spin-drying process by lowering the speed to a safer level through back-end correction and an intelligent speed reversal mechanism (finding the highest safe speed). This results in extremely high completion rate and stability of the spin-drying program. Users can still achieve relatively efficient spin-drying results when faced with uneven loads on the washing machine (such as a single heavy garment), reducing the need for secondary operations and improving user satisfaction.

[0104] Enhanced algorithm robustness and adaptability: The highest safety level decision stage does not rely on fixed level backoff logic, but dynamically searches for the optimal safety level based on real-time eccentricity and remaining correction times. It can adapt to different load distributions, clothing materials and initial imbalance levels, and has good environmental adaptability and control robustness.

[0105] In summary, the highest safety setting decision stage, as a safety fallback mechanism for spin-drying control, not only improves the multi-level fault tolerance system, but also achieves the intelligent control goal of "safety first, efficiency second best, and task completion guaranteed," significantly improving the reliability and intelligence level of the washing machine under complex operating conditions.

[0106] During implementation, such as Figure 1 As shown, two preset speed thresholds are used. , and < The rotational speed is divided into low-speed, medium-speed, and high-speed ranges. The corresponding upper limit of eccentricity is used express, The corresponding upper limit of eccentricity is used express;

[0107] The maximum number of total correction attempts is used This indicates the maximum number of front-end correction attempts. This indicates the maximum number of correction attempts required for severely eccentric front-end systems. This is a fixed value, representing the upper limit of the number of corrections required at the front end for moderate eccentricity. It is a constant; where:

[0108] = + .

[0109] exist Figure 2 middle, use express, use express, The 3 in ≤3 is , The 5 in ≤5 is Not shown in the figure. ,like It can be 20.

[0110] During implementation, such as Figure 2 As shown, the target gear entry control phase specifically includes:

[0111] Step S1: Perform front-end correction and obtain the actual eccentricity. ;

[0112] Step S2: Determine ≤ Whether it is valid, The upper limit of the target eccentricity;

[0113] like ≤ If true, then the target rotational speed is used. Dehydration;

[0114] like > Then proceed to step S3;

[0115] Step S3: Determine > Is it valid?

[0116] like > If established, then proceed to step S31;

[0117] Step S31:

[0118] Total number of times severe front-end deviation correction was actually executed ;

[0119] Step S32: Determine ≤ Is it valid?

[0120] like ≤ (correspond Figure 2middle If ≤3) is true, then return to step S1;

[0121] exist > In the case of [the situation], step S33 of the highest safety level decision stage will be executed.

[0122] When the actual eccentricity meets the requirements (step S2 is met), the dehydration process immediately begins at the target speed to achieve efficient operation.

[0123] By speed threshold , and < ; and in > When the condition is established (step S3 is established), the system considers it a "severe eccentricity" scenario and accumulates a separate count for such situations during front-end correction in step S31. This design can effectively distinguish between slight imbalance (which may be resolved with a single front-end correction) and severe off-center loading (which requires careful handling), thus providing a more accurate basis for whether to continue attempting to increase speed and preventing mechanical shocks or safety risks caused by repeated forced speed increases.

[0124] In step S32, set ≤ (like Figure 2 (As shown, ≤3 attempts), if unsuccessful, the speed-up attempt is immediately terminated, and the system enters the highest safe speed decision-making stage. This mechanism avoids the infinite loop of front-end correction caused by clothing that is difficult to distribute evenly (such as a single pair of jeans or a large bed sheet tangled together), significantly reducing user waiting time.

[0125] During implementation, such as Figure 2 As shown, the decision-making stage for the highest safety level specifically includes:

[0126] Step S33:

[0127] = - - ; where, the actual number of times the front-end correction was executed = + ; Figure 2 , use express, The 3 in ≤3 is ,at this time, It has been reached , =0; The corresponding washing machine situation is that the load is severely eccentric. The front-end correction reached 3 times, but the severe eccentricity was not significantly improved, and the effect of the front-end correction was small.

[0128] Step S34: Correct the actual number of executions in the backend. ≤ Under these conditions, the backend jitter correction is executed repeatedly and updated. Each update Afterwards, and , ... Compare them separately;

[0129] Until found: < ≤ Then x+1 is the highest safety level. This is the highest safe speed setting.

[0130] The target gear entry control phase is the attempt phase to reach the target speed; the highest safe gear decision phase is the gear decision phase for safety as a safety net.

[0131] In step S33:

[0132] = - - This is a specific method of determining the maximum number of backend correction attempts = the maximum number of total correction attempts - the actual number of frontend correction attempts. This method enables intelligent determination of the maximum number of backend correction attempts, maximizing the utilization of... All limited correction quotas.

[0133] To achieve graded judgment and differentiated processing of the degree of eccentricity: When entering step S33, by introducing the state of "severe eccentricity" and accumulating its occurrence count separately in step S31, the system can more accurately distinguish the severity of load imbalance.

[0134] In cases of severe eccentricity, in order to maximize dehydration and avoid dehydration failure, step S34 will... Upper limit of eccentricity for all gears , ... A comparison is made to find the highest safe setting, minimizing the possibility of dehydration failure. In other words, step S34 involves finding the highest safe setting within the range of all settings. The "safety" in the highest safe setting refers to... The maximum eccentricity of the highest safety setting is defined as the highest speed at which the speed is lower than the target speed. This means that through intelligent optimization across all settings, even if the target speed cannot be reached, dehydration can still be completed at a higher speed than the highest safety setting, significantly improving dehydration dryness, reducing the user's subsequent processing burden, and enhancing the product user experience.

[0135] In step S34, According to self , Compare them in the order of ...

[0136] During implementation, such as Figure 2 As shown, in the target gear access control stage, the judgment is made in step S3. > When is it true:

[0137] like ≤ Then proceed to step S4;

[0138] Step S4: Determine > Is it true or false?

[0139] like > If successful, proceed to step S41;

[0140] Step S41:

[0141] Total number of times the front-end correction for moderate eccentricity was actually executed ;

[0142] Step S42: Determine ≤ Is it valid?

[0143] exist ≤ If the condition is met, return to step S1;

[0144] exist > In the case of [the situation], step S43 of the highest safety level decision phase is executed.

[0145] The "target level access control stage" further refines the hierarchical identification mechanism for eccentricity. By distinguishing between "moderate eccentricity" and "severe eccentricity" and managing their respective counts, it achieves a refined perception of the degree of imbalance in clothing and a differentiated response strategy. This design significantly improves the adaptability, safety, and resource utilization efficiency of dehydration control. Specific technical effects are as follows:

[0146] Achieving graded judgment and differentiated processing of eccentricity: By introducing the intermediate state of "moderate eccentricity" and accumulating its occurrence count separately in step S41, the system can more accurately distinguish the severity of load imbalance, avoid treating all cases of excessive eccentricity as high risk, and thus enable a more reasonable correction strategy.

[0147] Optimize the allocation of correction resources to improve correction effectiveness: Moderate misalignment is usually caused by uneven distribution of clothing but not severe tangling, and has a high success rate in correction. This can be achieved by setting independent counting for moderate misalignment. The system can The system provides more opportunities for adjustments and fully utilizes front-end correction to improve load conditions.

[0148] The method of classifying and counting severe and moderate eccentricity can make more efficient use of the limited number of correction attempts.

[0149] During implementation, such as Figure 2 As shown, the highest safety level decision-making stage also includes:

[0150] Step S43:

[0151] = - - ;correspond Figure 2 , use express, The 5 in ≤5 is ,at this time, It has been reached ; The value can be any value between 0 and 3, depending on the actual implementation. For example, in the case of the washing machine, the load eccentricity is moderate, and the front-end correction has been performed at least 5 times, indicating that the front-end correction has a certain effect.

[0152] Step S44: In ≤ Under these conditions, the backend jitter correction is executed repeatedly and updated. Each update Afterwards, Compare with the upper limit of the eccentricity corresponding to each gear in the mid-speed range;

[0153] Until found: < ≤ If x+1 is the highest safe gear, then x is the value of the gear in the mid-speed range. That is, step S44 is to find the highest safe gear in the mid-speed range.

[0154] In step S43:

[0155] = - - This is a specific method of determining the maximum number of backend correction attempts = the maximum number of total correction attempts - the actual number of frontend correction attempts. This method enables intelligent determination of the maximum number of backend correction attempts, maximizing the utilization of... All limited correction quotas.

[0156] In step S44, intelligent optimization in the medium speed range allows the highest safe speed to be found even if the target speed cannot be reached. Dehydration is completed at the highest safe speed, such as 600 rpm, 800 rpm, or 1000 rpm, which significantly improves the dryness of the dehydrated product, reduces the user's subsequent processing burden, and enhances the product user experience.

[0157] In the case of moderate eccentricity, since the search space for the highest safe gear is limited to the preset medium speed range (rather than all k gears), the comparison and decision-making process is more efficient, shortening the time required to determine the highest safe gear.

[0158] Combined with backend correction being limited to less than or equal to The entire decision-making process can be completed in a short time, avoiding prolonged program stagnation and enhancing users' perception of the washing machine's "rapid response and intelligent decision-making".

[0159] It should be noted that in steps S33 and S43, Although the equations are the same, at that time due to , Both are based on the corresponding actual number of executions; therefore, in steps S33 and S43... The value of in varies with , The actual value will vary.

[0160] In implementation, in step S44, The comparison is performed in the order of the upper limit of eccentricity in the high gear within the mid-speed range to the upper limit of eccentricity in the low gear within the mid-speed range.

[0161] During implementation, such as Figure 2 As shown, in the target gear entry control stage, the judgment is made in step S4. > When is it true:

[0162] like ≤ Then, step S51 of the highest safety level decision stage will be executed;

[0163] The decision-making stage for the highest safety level also includes:

[0164] Step S51:

[0165] = - - ;correspond Figure 2 , It depends on the actual implementation and could be any value between 0 and 3. The value can be any value between 0 and 5, depending on the actual implementation. In the case of the washing machine, the load is slightly off-center, and the front-end correction plays a significant role.

[0166] Step S52: In ≤ Under these conditions, the backend jitter correction is executed repeatedly and updated. Each update Afterwards, Compare with the upper limit of eccentricity for each gear in the high-speed range:

[0167] Until found: < ≤ If x+1 is the highest safe gear, then x is the value of the gear in the high speed range.

[0168] In steps S33, S43, and S51, Although the equations are the same, at that time due to , All of these are based on the corresponding actual number of executions; therefore, in steps S33, S43, and S51... The value of in varies with , The actual value will vary.

[0169] In step S52, intelligent optimization in the high-speed range allows the highest safe speed to be found even if the target speed cannot be reached. Dehydration is completed at the highest safe speed, significantly improving the dryness of the dehydrated product, reducing the user's subsequent processing burden, and enhancing the product user experience.

[0170] In the case of slight eccentricity, since the search space for the highest safe gear is limited to the preset high speed range (rather than all k gears), the comparison and decision-making process is more efficient, shortening the time required to determine the highest safe gear.

[0171] Combined with backend correction being limited to less than or equal to The entire decision-making process can be completed in a short time, avoiding prolonged program stagnation and enhancing users' perception of the washing machine's "rapid response and intelligent decision-making".

[0172] In implementation, in step S52, The comparison is performed in the order of the upper limit of the eccentricity of the higher gear in the high-speed range to the upper limit of the eccentricity of the lower gear in the high-speed range.

[0173] Example 2

[0174] The washing machine spin-drying control method of this application embodiment has the following features in addition to the features of Embodiment 1.

[0175] Before the target gear entry control stage, there is also a pre-disengagement stage.

[0176] like Figure 2 As shown, after receiving the user's selected dehydration target level, it enters the pre-dehydration stage.

[0177] The pre-shedding stage includes:

[0178] Step S6: Perform eccentricity detection during the pre-detachment stage and update the actual eccentricity. And perform weighing and testing;

[0179] Step S7: Determine Does the condition ≤ pre-de-threshold hold?

[0180] If established, pre-disengagement begins; after pre-disengagement ends, the target gear access control phase begins.

[0181] If the condition is not met, then pulse processing is performed;

[0182] After pulse processing, return to step S6.

[0183] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0184] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for controlling the spin-drying process of a washing machine, characterized in that, Includes the following steps: There are k preset dehydration speeds, each corresponding to an increasing rotational speed. < <...< and the upper limit of decreasing eccentricity > >…> Where k ≥ 3; The maximum number of preset correction attempts is a fixed value, and the maximum number of front-end correction attempts is also a fixed value. Determine the target rotation speed and the upper limit of the target eccentricity based on the target dehydration level; Entering the target gear access control phase: If the actual number of front-end corrections is less than or equal to the upper limit of the number of front-end corrections, perform front-end corrections in a loop and update the actual eccentricity: If the actual eccentricity at any time is less than or equal to the upper limit of the target eccentricity, then the dehydration will be carried out at the target rotational speed. If the actual number of front-end corrections is greater than the upper limit of the number of front-end corrections and the actual deviation is greater than the upper limit of the target deviation, then the decision-making stage of the highest safety level will be entered. Maximum safety gear decision stage: Find the maximum safety gear, and the upper limit of the eccentricity of the next gear below the maximum safety gear < the actual eccentricity ≤ the upper limit of the eccentricity of the maximum safety gear; The decision-making process for the highest safety level includes the following steps: Assign a value to the maximum number of backend corrections. The maximum number of backend corrections = the upper limit of the total number of corrections - the actual number of frontend corrections executed. If the actual number of backend corrections is less than or equal to the maximum number of backend corrections, the backend corrections are executed repeatedly and the actual eccentricity is updated. Continue until the highest safe setting is found; Preset two speed thresholds , and < The rotational speed is divided into low-speed, medium-speed, and high-speed ranges. The corresponding upper limit of eccentricity is used express, The corresponding upper limit of eccentricity is used express; The maximum number of total correction attempts is used This indicates the maximum number of front-end correction attempts. This indicates the maximum number of correction attempts required for severely eccentric front-end systems. This is a fixed value, representing the upper limit of the number of corrections required at the front end for moderate eccentricity. It is a constant; where: = + ； The steps in the target gear entry control phase specifically include: Step S1: Perform front-end correction and obtain the actual eccentricity. ; Step S2: Determine ≤ Whether it is valid, The upper limit of the target eccentricity; like ≤ If true, then the target rotational speed is used. Dehydration; like > Then proceed to step S3; Step S3: Determine > Is it valid? like > If established, then proceed to step S31; Step S31: Total number of times severe front-end deviation correction was actually executed ; Step S32: Determine ≤ Is it valid? like ≤ If the condition is met, return to step S1; exist > In this case, the process proceeds to step S33 of the highest safety level decision-making stage.

2. The spin-drying control method for a washing machine according to claim 1, characterized in that, The decision-making phase for the highest safety level specifically includes: Step S33: = - - ; where, the actual number of times the front-end correction was executed = + ; Step S34: Correct the actual number of executions in the backend. ≤ Under these conditions, the backend jitter correction is executed repeatedly and updated. Each update Afterwards, and , ... Compare them separately; Until found: < ≤ Then x+1 is the highest safety level. The highest safe speed setting. This represents the actual eccentricity, where x is a value from 1, 2, 3, 4, 5, ..., k-1.

3. The spin-drying control method for a washing machine according to claim 2, characterized in that, In step S34, According to self , Compare them in the order of ...

4. The spin-drying control method for a washing machine according to claim 2, characterized in that, In the target gear entry control phase, the judgment is made in step S3. > When is it true: like ≤ Then proceed to step S4; Step S4: Determine > Is it true or false? like > If successful, proceed to step S41; Step S41: Total number of times the front-end correction for moderate eccentricity was actually executed ; Step S42: Determine ≤ Is it valid? exist ≤ If the condition is met, return to step S1; exist > In the case of [the situation], step S43 of the highest safety level decision phase is executed.

5. The spin-drying control method for a washing machine according to claim 4, characterized in that, The decision-making stage for the highest safety level also includes: Step S43: = - - ； Step S44: In ≤ Under these conditions, the backend jitter correction is executed repeatedly and updated. Each update Afterwards, Compare with the upper limit of the eccentricity corresponding to each gear in the mid-speed range; Until found: < ≤ If x+1 is the highest safe gear, then x is the value of the gear in the mid-speed range.

6. The spin-drying control method for a washing machine according to claim 5, characterized in that, In step S44, The comparison is performed in the order of the upper limit of eccentricity in the high gear within the mid-speed range to the upper limit of eccentricity in the low gear within the mid-speed range.

7. The spin-drying control method for a washing machine according to claim 5, characterized in that, In the target gear entry control phase, the judgment is made in step S4. > When is it true: like ≤ Then, step S51 of the highest safety level decision stage will be executed; The decision-making stage for the highest safety level also includes: Step S51: = - - ； Step S52: In ≤ Under these conditions, the backend jitter correction is executed repeatedly and updated. Each update Afterwards, Compare with the upper limit of eccentricity for each gear in the high-speed range: Until found: < ≤ If x+1 is the highest safe gear, then x is the value of the gear in the high speed range.

8. The spin-drying control method for a washing machine according to claim 7, characterized in that, In step S52, The comparison is performed in the order of the upper limit of the eccentricity of the higher gear in the high-speed range to the upper limit of the eccentricity of the lower gear in the high-speed range.

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