Dehydration control method

Abstract

The application provides a dehydration control method, which comprises: a shaking step, controlling the drum to continuously operate at a shaking rotating speed which is less than a wall sticking rotating speed; and a shaking state determination step, detecting a resistance peak value of the drum within a first predetermined time in the shaking step, and determining that the clothes reach a preset shaking shape based on a comparison result of the resistance peak value and a resistance peak value parameter. In this way, by detecting the resistance peak value generated by the clothes after tumbling and falling on the drum wall, and objectively comparing the resistance peak value with the resistance peak value parameter, the actual distribution and scattering of the clothes in the drum can be dynamically and timely perceived. This control logic gives the device the ability to identify the microstate of the clothes, ensures that the shaking is only determined to be completed when the clothes truly reach a uniformly distributed and wall sticking state, thereby effectively avoiding eccentric interception caused by blind speedup, and greatly improving the success rate of dehydration start.

Description

Technical Field

[0001] This invention relates to the field of garment processing and equipment control technology, specifically to a dehydration control method. Background Technology

[0002] In the operation of garment processing devices that include drums, dehydration is a crucial step. At the initial stage of dehydration, in order to ensure that the clothes inside the drum are distributed relatively evenly, the drum is usually controlled to operate at a lower speed before accelerating to reach the wall speed, in order to shake off any tangled or piled-up clothes.

[0003] In existing spin-drying control schemes, the shaking and scattering process before reaching the wall-hugging speed typically employs a control logic with a fixed operating time. This means the drum operates continuously at a speed lower than the wall-hugging speed for a preset fixed period. Once this time is reached, the drum is directly accelerated to initiate the subsequent wall-hugging and spin-drying actions. However, due to significant differences in the material, quantity, and initial stacking state of the clothing processed each time, the tumbling and scattering process within the drum exhibits strong randomness and dynamic changes. Relying solely on a fixed duration often fails to accurately assess the actual distribution of clothing within the drum. This can easily lead to the speed being increased before the clothing reaches an ideal uniform state, potentially causing significant eccentricity or vibration in the initial stages of spin-drying. This can trigger the device's imbalance interception mechanism, requiring a speed reduction and retry, thus affecting the success rate of spin-drying startup and overall operating efficiency. Summary of the Invention

[0004] To address the above problems, this invention provides a dehydration control method to at least solve the technical problem of how to accurately identify the shape of clothing that is conducive to uniform adhesion to the wall of the garment processing device before the dehydration speed is increased, thereby improving the success rate of dehydration start-up.

[0005] To address the aforementioned technical problems, this application provides a dehydration control method for controlling the dehydration of a garment processing device including a drum. The dehydration control method includes: a shaking step, in which the drum is controlled to continuously operate at a shaking speed less than the wall-mounted rotation speed; and a shaking state determination step, in which the resistance peak value of the drum during the shaking step is detected within a first predetermined time interval, and based on a comparison of the resistance peak value with a resistance peak parameter, the garment is determined to have reached a preset shaking state.

[0006] By detecting the peak resistance generated when clothes tumble and hit the drum wall, and objectively comparing this peak resistance with other resistance parameters, the actual distribution and dispersal of clothes inside the drum can be dynamically and in real time perceived. Compared to the traditional method of blindly increasing speed over a fixed period, this control logic gives the device the ability to identify the microscopic state of the clothes, ensuring that the dispersal is only considered complete when the clothes are truly evenly distributed and suitable for adhering to the drum wall. This effectively avoids eccentric interception caused by blindly increasing speed and significantly improves the success rate of starting the spin cycle.

[0007] Optionally, the resistance peak parameter includes the average, minimum, or second-minimum value of the resistance peak.

[0008] By using the above methods, the statistical characteristic values ​​of the previous resistance peak collected within the first predetermined time period are used as the comparison benchmark for judgment. This can adapt to the actual load characteristics of clothing of different materials, quantities and water absorption rates, and provide an objective and dynamically consistent reference standard for judging the condition of clothing based on the current load history.

[0009] Optionally, in the shaking state determination step, detecting the resistance peak includes: detecting the speed fluctuation, current fluctuation, or power fluctuation when the drum is running.

[0010] Optionally, in the shakeout state determination step, the comparison result is: the resistance peak value is less than the resistance peak value parameter.

[0011] By using the above methods, when the newly detected resistance peak is less than the set resistance peak parameter (such as the average or minimum value collected previously), it means that the clumping of clothing has been significantly reduced, and the concentrated force on the impact of a single drop on the cylinder wall has decreased. This specific comparison result accurately and intuitively indicates that the clothing has been fully dispersed and is in a loose state that is conducive to uniform adhesion to the wall.

[0012] Optionally, after the shaking state determination step, a lifting step is also included: within a second predetermined time, when the clothes are detected to have been thrown off the drum, it is determined that the lifting condition is met, and the drum is controlled to accelerate to the wall-hugging speed.

[0013] By using the above methods, after confirming that the garments have reached the preset shaking and spreading state, the micro-timing of increasing the rotation speed is precisely timed to the moment when the garments are freely thrown away and not strongly restrained by the friction of the drum wall. This ensures that the garments can quickly and evenly spread out and adhere to the drum wall when the centrifugal force increases sharply, further improving the success rate and uniformity of adhering to the wall in one go.

[0014] Optionally, during the lifting step, the garment can be detected as being thrown off the drum by monitoring the fluctuations in rotational speed or current during drum operation.

[0015] Optionally, in the lifting step, the second predetermined time is the cycle of one rotation of the roller.

[0016] Optionally, after the stretching step, an eccentricity treatment step is also included: controlling the roller to accelerate to a target detection speed greater than the wall-attaching speed and performing eccentricity detection, and controlling the dehydration of the roller based on the eccentricity detection result.

[0017] By introducing eccentricity detection after the clothes have successfully adhered to the wall, the high-speed dehydration stage is provided with a final safety check, effectively preventing high-frequency vibration of the machine body caused by potential or accidental eccentricity.

[0018] Optionally, the eccentricity handling step includes: detecting the eccentricity and / or vibration of the roller; if the eccentricity is less than a preset eccentricity threshold, or the vibration is less than a preset vibration threshold, then the roller speed is increased to perform dehydration; if the eccentricity is greater than or equal to the preset eccentricity threshold, and / or the vibration is greater than or equal to the preset vibration threshold, then the roller speed is controlled to decrease to a target retest speed less than the wall-mounted speed.

[0019] Through the above methods, a complete closed-loop safe dehydration control logic is constructed, which not only ensures that clothing loads that meet safety conditions can be dehydrated smoothly, but also allows for timely intervention and speed reduction in abnormal eccentric situations, avoiding damage to the mechanical structure caused by forced high-speed operation.

[0020] Optionally, after controlling the roller to slow down to the target retry speed, the process may also include: returning to perform the shaking step.

[0021] Through the above methods, the garment processing device is endowed with the ability to self-correct and automatically retry when encountering extreme large eccentricity, thus avoiding a complete shutdown or crash of the dehydration process.

[0022] Optionally, before the shaking step, the method further includes: a first trial run step, controlling the roller to accelerate to a first shaking speed and run for a first preset time; a second trial run step, controlling the roller to accelerate to a second shaking speed and run for a second preset time; a calculation step, detecting operating parameters in the first trial run step and determining a first calculation result based on the operating parameters, and detecting operating parameters in the second trial run step and determining a second calculation result based on the operating parameters; and a shaking speed determination step, determining the first shaking speed, the second shaking speed, or a third shaking speed located between the first shaking speed and the second shaking speed as the shaking speed based on the first calculation result and the second calculation result.

[0023] By introducing a multi-stage trial operation evaluation mechanism before the formal shaking, the most suitable initial shaking speed can be dynamically calculated and matched according to the actual feedback characteristics of the current clothing load. This achieves adaptive adjustment of the pre-dehydration treatment and further optimizes the shaking efficiency and quality under different load conditions. Attached Figure Description

[0024] Figure 1 This is a flowchart of the dehydration control method in the embodiments of this application.

[0025] Figure 2 This is a schematic diagram of the clothing handling device operating at a shaking speed according to the embodiments of this application.

[0026] Figure 3 This is a schematic diagram of the rotational speed of the clothing handling device in the lifting step according to the embodiments of this application.

[0027] Figure 4 This is a schematic diagram comparing the eccentricity of clothing in this application embodiment with that in some other embodiments after being stretched to the wall-mounted rotation speed.

[0028] Figure 5 This is another flowchart of the dehydration control method in the embodiments of this application.

[0029] Figure label: 100. Clothing handling device; 101. Drum. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] <First Implementation Method> refer to Figure 1 and Figure 2 This embodiment provides a dehydration control method, which can be implemented by the control system of the garment handling device 100. This dehydration control method is used to control the dehydration of the garment handling device 100, which includes a drum 101. The garment handling device 100 can be a drum washing machine. It should be noted that, in addition to a drum washing machine, the garment handling device 100 can also be a washer-dryer combo with a dehydration function, a washer-extractor, or a large commercial washing machine, etc. The drum 101 is driven to rotate by a drive motor to achieve tumbling and dehydration of the garments. The dehydration control method includes a shaking step S100 and a shaking state determination step S200.

[0032] Shaking Step S100: Control the roller 101 to continuously rotate at the shaking speed. The shaking speed is set to be less than the wall-adhering speed. The wall-adhering speed refers to the critical speed at which the centrifugal force generated by the high-speed rotation of the roller 101 is just enough to overcome the weight of the clothes, causing the clothes to adhere tightly to the inner wall of the roller 101 and rotate without falling off. When operating at a shaking speed less than the wall-adhering speed, the clothes rise to a certain height along the inner wall of the roller 101, and then fall freely downwards because gravity exceeds the centrifugal force. This continuous lifting and falling process effectively loosens the clothes tangled inside.

[0033] Shaking State Determination Step S200: In the shaking step S100, the resistance peak of the roller 101 within a first predetermined time period is detected. When the clothing tumbles inside the roller 101 and falls downward onto the inner wall of the roller 101, it generates an impact force on the roller 101 in the opposite direction of rotation. This impact force manifests as operating resistance. The point where this resistance is at its maximum within one tumbling cycle is the resistance peak.

[0034] It should be noted that there are multiple ways to detect the peak resistance. The peak resistance can be indirectly obtained by monitoring the phase current fluctuation of the drive motor, or by monitoring the instantaneous surge in the real-time output power of the motor, or by detecting the minute transient decrease in the actual operating speed of the drum 101 and combining it with the rotational inertia of the drum 101 system to calculate the peak resistance.

[0035] After detecting a resistance peak, the garment is determined to have reached a preset shaking pattern based on a comparison between the resistance peak and the resistance peak parameter. The first predetermined time period serves as a time window for collecting initial operational data. The resistance peak parameter is a criterion calculated based on multiple early resistance peaks collected within this first predetermined time period. The resistance peak parameter can be the average value of resistance peaks within this time period. It should be noted that, in addition to the average value, the resistance peak parameter can also be a statistical characteristic value such as the minimum, second minimum, or weighted moving average of previously collected data.

[0036] Through the above methods, during the initial shaking and dispersing stage of the spin cycle, if the clothes are severely clumped together, the clumped clothes, falling as a relatively heavy unit, will generate a huge concentrated impact force on the drum 101. At this time, the detected resistance peak value is very high. As the shaking and dispersing process continues, the clothes are gradually loosened and dispersed. The shape of the clothes changes from a whole clumped together to scattered individual pieces or small pieces. The dispersed clothes no longer fall synchronously, but sequentially. This significantly reduces the concentrated physical resistance generated by a single drop on the drum 101. Therefore, by detecting the subsequent resistance peak in real time and comparing it with the resistance peak parameter in the first predetermined time period, the change in the shape of the clothes can be intuitively reflected. When the comparison result shows a significant decrease in the resistance peak and meets the conditions, it can be accurately stated that the clumping phenomenon of the clothes has been eliminated. This indicates that the distribution of the clothes inside the drum 101 is relatively uniform and loose, that is, the clothes are judged to have reached the preset shaking and dispersing state.

[0037] In other words, by detecting the peak resistance generated by the tumbling and falling of clothing in real time and objectively comparing its real-time resistance characteristics with the peak resistance parameters, the dehydration control system gains the ability to dynamically sense the microscopic disintegration state of the clothing. This judgment mechanism based on real physical feedback completely changes the blindness of traditional constant-speed and timed control logic. The system can accurately determine whether the clothing has truly reached a loose state conducive to even adhesion to the walls. This ensures that the dehydration program only recognizes the disintegration as complete when the clothing distribution is at its most ideal. This effectively avoids the risk of high-frequency vibration and drum collision caused by prematurely increasing the speed when the clothing is still in an eccentric clumped state. This significantly reduces the probability of triggering the imbalance interception mechanism and repeated speed reduction and retry. Ultimately, it significantly improves the success rate of 100% dehydration start-up of the clothing processing device, shortens the total dehydration time, and enhances the user experience.

[0038] The following is a detailed explanation of step S200 for determining the jitter state.

[0039] In the shaking state determination step S200, detecting the resistance peak specifically includes detecting the fluctuations in rotational speed, current, or power of the roller 101 during operation. The roller 101 is driven by a drive motor. When clothing tumbles inside the roller 101 and falls against the roller wall, it generates instantaneous reverse mechanical resistance. This sudden change in mechanical resistance is directly transmitted to the drive motor. When the resistance increases instantaneously, with the motor output torque remaining constant, the actual operating speed of the roller 101 will experience a downward fluctuation in rotational speed. On the other hand, if the motor's closed-loop control system attempts to maintain a stable rotational speed, it will automatically increase the torque output. This will directly manifest as an upward fluctuation in current or power in the motor's operating data. Therefore, by monitoring the extreme values ​​of these conventional electrical or motion parameters in real time, the magnitude of the physical resistance peak can be accurately mapped.

[0040] Regarding the specific parameters for obtaining the peak resistance, it should be noted that, in addition to the aforementioned speed fluctuation, current fluctuation, or power fluctuation, other alternative solutions can be used. For example, it can be replaced by detecting the duty cycle fluctuation of the pulse width modulation (PWM) signal of the drive motor under constant speed closed-loop control. A sudden increase in the duty cycle can also indirectly and accurately characterize a sudden increase in load resistance.

[0041] To establish a scientific comparison benchmark, the aforementioned resistance peak parameters include the average, minimum, or second-smallest resistance peak values. The first predetermined time is set during the initial shaking and dispersing phase of the spin cycle. Within this first predetermined time, the roller 101 undergoes multiple tumbling cycles. During this period, the controller collects multiple consecutive initial resistance peak values. The system uses this previously collected data for statistical calculations to derive the aforementioned average, minimum, or second-smallest values, which are then used as benchmark parameters for subsequent judgments. Using the average value as a parameter effectively filters out occasionally occurring extremely large or small error data, reflecting the general force level of the initial clumped state of the clothing. Using the minimum or second-smallest value as a parameter represents the loosest and least impacted state that the clothing occasionally reaches within this first predetermined time.

[0042] The resistance peak parameter can be preset or calculated in real time. After obtaining the resistance peak parameter, the roller 101 continues to shake and disperse. During this process, the controller continues to detect newly generated resistance peaks in real time. The controller judges the comparison result between the resistance peak and the preset resistance peak parameter. In this embodiment, the comparison result is that the resistance peak is less than the resistance peak parameter. When the newly detected single resistance peak decreases and is less than the previously calculated average, minimum, or second-minimum value, the system determines that the comparison condition is met. At this time, it means that the concentrated impact force generated by the current fall of the clothing has been significantly lower than the previous average force level or the historical best level. This indicates that the originally clumped and heavy clothing has been effectively broken down into smaller and more dispersed independent individuals, and the fall impact has been dispersed. Based on this, the system accurately determines that the clothing has reached the preset shaking and dispersing pattern that is conducive to uniform adhesion to the wall.

[0043] This setup extracts the resistance peak by monitoring fluctuations in inherent motor operating parameters such as speed, current, or power, fully utilizing existing motor control system hardware. This eliminates the need for additional external physical sensors such as torque or pressure sensors, effectively controlling manufacturing costs while ensuring signal acquisition sensitivity. Setting the judgment benchmark based on the average, minimum, or second-smallest value derived from previous data statistics gives the control system strong load adaptability. This benchmark can automatically adjust according to the material and absorbent weight of the clothes being washed, avoiding misjudgments caused by using fixed, rigid universal thresholds. Using a resistance peak value less than the resistance peak parameter as the final judgment condition provides a quantitative trigger standard that perfectly conforms to the physical disintegration laws of clothing. This makes the judgment process for the disintegration state of the clothes more rigorous and objective, further improving the reliability of the spin-drying start judgment.

[0044] <Second Implementation Method> refer to Figure 5 This application also provides a dehydration control method, which, based on the aforementioned first embodiment, further adds adaptive trial operation logic, precise lifting logic, and eccentric safety handling logic after adhering to the wall during the initial stage of dehydration.

[0045] Before proceeding to the formal shaking and scattering step S100, the dehydration control method also includes a trial run phase to pre-sensitize the load characteristics of the garments. Specifically, this includes a first trial run step, a second trial run step, a calculation step, and a shaking and scattering speed determination step.

[0046] In the first trial run step, the control roller 101 is accelerated to a first shaking speed and operated for a first preset time. In the second trial run step, the control roller 101 is accelerated to a second shaking speed and operated for a second preset time. The aforementioned first and second preset times can be fixed time periods used to collect motor operation data.

[0047] Calculation steps: In the first trial run step, operating parameters are detected and a first calculation result is determined based on these parameters. In the second trial run step, operating parameters are detected and a second calculation result is determined based on these parameters. Operating parameters can be the average phase current or active power during motor operation. The first and second calculation results reflect the inertia feedback and dynamic distribution of the clothing at different speeds.

[0048] The subsequent step involves determining the tumbling speed. Based on the first and second calculation results, the final tumbling speed is determined as either the first tumbling speed, the second tumbling speed, or a third tumbling speed between the first and second tumbling speeds. Through dual-stage detection, the controller can assess the most suitable tumbling speed for the current laundry based on its water absorption, material, and weight. It should be noted that besides determining the tumbling speed through trial runs at two fixed speeds, other alternative solutions can be used. For example, the drum 101 can be controlled to continuously and smoothly sweep its speed within a certain safe speed range, recording and comparing the operating parameters throughout the sweep process in real time to find and select the optimal tumbling speed.

[0049] By introducing a two-stage trial run evaluation before the formal shaking process, adaptive matching of the shaking speed was achieved. This improved the efficiency and targeting of the initial shaking process under different load conditions.

[0050] Specifically, in the calculation step, it is necessary to detect the operating parameters of the roller 101 during operation. For example, the first actual speed of the roller 101 in the first trial run step and the second actual speed in the second trial run step are detected. Both the first and second actual speeds are obtained based on the roller 101 being in a stable operating period. The stable operating period refers to the uniform tumbling stage where the roller 101 completes the acceleration action and the target speed remains unchanged. Obtaining operating parameters during the stable operating period can eliminate dynamic deviations caused by motor acceleration and deceleration. The data collected at this time can truly reflect the stable tumbling pattern of the clothes under the action of specific centrifugal force, effectively shielding the dynamic interference during motor start-up and acceleration / deceleration stages, and improving the accuracy of the basic data.

[0051] Furthermore, the methods for detecting operating parameters in the calculation steps are diverse. Real-time current changes in the motor can be obtained through current detection, or the distribution parameters of the clothes inside the drum 101 can be obtained through image recognition. Employing multimodal detection methods such as current detection and image recognition improves the applicability of this dehydration control method.

[0052] In one specific embodiment, the operating parameters in the calculation step are the first actual rotational speed of the drum 101 within a first preset time period and the second actual rotational speed of the drum 101 within a second preset time period. In this case, the first calculation result includes the difference between the first tumbling speed and the first actual rotational speed. The second calculation result includes the difference between the second tumbling speed and the second actual rotational speed. When clothing tumbles and hits the baffle or drum wall inside the drum 101, a sudden change in load torque is generated. This sudden change in load causes the actual rotational speed of the motor to deviate from the set target speed, thus producing a speed difference.

[0053] In the step of determining the shaking speed, the above differences are statistically processed. The average of the absolute values ​​of the differences within a first preset time period is calculated and used as the first average. The average of the absolute values ​​of the differences within a second preset time period is calculated and used as the second average. Based on the comparison between the first and second averages, the first, second, or third shaking speed is determined as the final shaking speed. A smaller average indicates a high degree of alignment between the actual speed and the target speed, with minimal speed fluctuation. This confirms that the resistance generated when the clothing impacts the drum wall is relatively small, and the clothing is in a relatively loose state. Therefore, based on this comparison result, the speed corresponding to the smaller average can be selected as the actual shaking speed.

[0054] Furthermore, when both the first average value and the second average value are at a high level, for example, when both the first average value and the second average value are greater than the preset average value, it indicates that the tumbling state of the clothes at the first shaking speed and the second shaking speed is not stable enough and it is difficult to shake them out sufficiently. In this case, the third shaking speed, which is between the two, is directly determined as the final shaking speed.

[0055] After completing the above-mentioned shaking speed determination step, the process proceeds to the shaking step S100. After the aforementioned shaking state determination step S200 determines that the clothing has reached the preset shaking state, the dehydration control method further includes a lifting step. For example... Figure 3 As shown, during the lifting step, when the clothing is detected to have been thrown off the roller 101 within a second predetermined time period, it is determined that the lifting condition has been met. At this time, the roller 101 is controlled to accelerate to the wall-mounted speed.

[0056] During the lifting process, by monitoring the fluctuations in the rotational speed or current of the roller 101, it is determined whether the garment is being thrown off the roller 101. Combined with... Figure 2 and Figure 3 As shown, when the clothes are running at a constant speed under the shaking rotation speed, there is a difference between the target speed and the actual speed. When the clothes reach a high position and are thrown downwards against centrifugal force, the gravitational potential energy of the clothes is converted into kinetic energy, generating an accelerating impact force on the roller 101 in the direction of rotation. This impact force causes a slight instantaneous increase in the actual speed of the roller 101, resulting in fluctuations in the speed deviation. For example... Figure 3 The zero-point characteristic of the rotational speed difference indicates that the clothes are in the instantaneous state of being thrown off the drum 101. At this time, the clothes are in the loosest state, with minimal friction between themselves and with the drum wall. Increasing the rotational speed at this moment causes the clothes to be pushed outward by the rapidly increasing centrifugal force, resulting in excellent uniformity of adhesion to the drum wall.

[0057] In one specific implementation, the lifting condition in the lifting step can be set as follows: the difference between the shaking speed and the actual speed changes from a positive value to a negative value. Specifically, the actual speed of the roller 101 is detected, and the difference between the shaking speed and the actual speed is calculated. The actual speed can be obtained by a Hall sensor installed on the drive motor. It should be noted that, in addition to using a Hall sensor to detect the actual speed, photoelectric encoders, rotary transformers, or sensorless estimation algorithms based on the back electromotive force of the motor can also be used to obtain the actual speed.

[0058] By observing the changes in the aforementioned difference, the dynamic distribution of the clothing can be accurately identified. During the shaking process, the clothing is continuously lifted and dropped within the drum, causing slight dynamic fluctuations in the actual rotational speed of the drum 101. When the clothing is lifted upwards by the side wall of the drum 101, the load on the drive motor is relatively large, and the actual rotational speed is usually slightly lower than or close to the set shaking speed, resulting in a positive difference. When the clothing reaches a high position and is thrown downwards, its gravitational potential energy is converted into kinetic energy, generating a downward impact force on the drum 101 in the direction of rotation. This impact force causes the drum 101 to accelerate instantaneously, resulting in the actual rotational speed exceeding the set shaking speed for a short period. At this moment, the difference between the shaking speed and the actual rotational speed changes from positive to negative. The instant the difference changes from positive to negative accurately represents the moment when the clothing is just detached from the inner wall of the drum 101 and is suspended in the air, falling downwards. At this instant, the friction between the clothing is minimal, and the spatial distribution within the drum is at its loosest.

[0059] The second predetermined time sets a monitoring time window. Within this time, once the control system detects a signal indicating a change from positive to negative difference, it immediately increases the output torque of the drive motor. The rotational speed of the roller 101 then rapidly surpasses the wall-attaching speed. Since the clothes are in a loose state of falling through the air at this time, the sudden acceleration of the roller 101 causes these falling clothes to be quickly captured by the increased centrifugal force. The clothes will then adhere directly to the inner wall of the roller 101 in a more evenly spread-out form.

[0060] The second predetermined time can be the cycle of one rotation of the roller 101. The lifting step specifically involves: within the cycle of one rotation of the roller 101, when it is detected that the garment inside the roller 101 has been thrown off the roller 101, the roller 101 is controlled to accelerate to a speed that adheres to the wall. Precisely limiting the monitoring time window to the cycle of one rotation of the roller 101 allows for real-time and continuous tracking of the garment's microscopic posture within the current rotation cycle.

[0061] At this point, the clothes are in the most suitable loose state to adhere to the wall. As the rotation speed increases, the centrifugal force gradually increases, and the clothes begin to overcome gravity and adhere evenly to the inner wall of the roller 101.

[0062] Following the stretching step, the dehydration control method further includes an eccentricity processing step S400: controlling the roller 101 to accelerate to the target detection speed and performing eccentricity detection. The target detection speed is greater than the wall-adhering speed. At this point, the garments are completely adhered to the inner wall of the roller 101. Dehydration control is performed on the roller 101 based on the eccentricity detection result. Specifically, this eccentricity processing step includes detecting the eccentricity and / or vibration of the roller 101. The eccentricity can be obtained by analyzing the fluctuation amplitude of the motor speed. The vibration can be obtained by an acceleration sensor on the machine body.

[0063] like Figure 4 As shown, compared to randomly increasing the rotation speed, when increasing the rotation speed at the point where the rotation speed difference crosses zero (i.e., the throwing state), the normal distribution of the eccentricity of the clothes after they adhere to the wall shifts significantly to the left where the eccentricity is smaller. This proves that this timing of the increase can reduce the eccentricity of the clothes. If the detected eccentricity is less than a preset eccentricity threshold, or the vibration is less than a preset vibration threshold, it indicates that the distribution of the clothes is good. At this time, the rotation speed of the roller 101 is continued to increase for high-speed dehydration.

[0064] If the eccentricity is greater than or equal to a preset eccentricity threshold, and / or the vibration is greater than or equal to a preset vibration threshold, then the roller 101 is controlled to slow down to the target retry speed. The target retry speed is less than the wall-hugging speed. After controlling the roller 101 to slow down to the target retry speed, the process also includes returning to the shaking and scattering step S100. This causes the roller 101 to re-scatter the clothes with large eccentricity.

[0065] After confirming that the clothes have reached the desired dispersed state, the lifting action is precisely timed to the exact moment the clothes are thrown off the roller 101. This fully utilizes the free and loose state of the clothes in the air, greatly increasing the probability that the clothes will evenly disperse and adhere to the wall when the centrifugal force increases sharply. This significantly reduces the amount of eccentricity after adhering to the wall from a physical perspective. After successful adhering to the wall, eccentricity detection is further performed, constructing a complete closed-loop retry logic. This ensures that clothes meeting safety conditions can smoothly enter high-speed dehydration, and also allows abnormal eccentricity to be intervened and corrected in a timely manner. This comprehensively improves the operational stability and dehydration success rate of the clothes processing device 100.

[0066] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dehydration control method for controlling the dehydration of a garment processing device including a drum, characterized in that, include: In the shaking and scattering step, the roller is controlled to continuously rotate at a shaking and scattering speed, which is less than the wall-adhering speed. The shaking state determination step involves detecting the resistance peak of the roller within a first predetermined time during the shaking step, and determining that the clothing has reached a preset shaking state based on the comparison result of the resistance peak and the resistance peak parameter.

2. The dehydration control method according to claim 1, characterized in that, The resistance peak parameter includes the average, minimum, or second-minimum value of the resistance peak.

3. The dehydration control method according to claim 1, characterized in that, In the step of determining the shaking state, detecting the peak resistance includes: The amount of fluctuation in rotational speed, current, or power during the operation of the drum is detected.

4. The dehydration control method according to any one of claims 1-3, characterized in that, In the jitter state determination step, the comparison result is: The peak resistance is less than the peak resistance parameter.

5. The dehydration control method according to claim 4, characterized in that, Following the shaking state determination step, a lifting step is also included: Within a second predetermined time period, when the clothes are detected to have been thrown off the roller, it is determined that the lifting condition has been met, and the roller is controlled to accelerate to the wall-mounted speed.

6. The dehydration control method according to claim 5, characterized in that, During the lifting step, the garment is detected as being thrown off the roller by monitoring the speed deviation or current fluctuation of the roller during operation.

7. The dehydration control method according to claim 5, characterized in that, In the lifting step, the second predetermined time is the period of one rotation of the roller.

8. The dehydration control method according to claim 5, characterized in that, Following the stretching step, an eccentricity treatment step is also included: The roller is controlled to accelerate to the target detection speed and eccentricity detection is performed. Based on the eccentricity detection result, the roller is dewatered. The target detection speed is greater than the wall-adhering speed.

9. The dehydration control method according to claim 8, characterized in that, The eccentricity processing steps include: Detect the eccentricity and / or vibration of the roller; If the eccentricity is less than a preset eccentricity threshold, or the vibration is less than a preset vibration threshold, then the rotational speed of the drum will continue to be increased to perform dehydration. If the eccentricity is greater than or equal to a preset eccentricity threshold, and / or the vibration is greater than or equal to a preset vibration threshold, then the roller is controlled to slow down to a target retry speed, which is less than the wall-attaching speed.

10. The dehydration control method according to claim 9, characterized in that, After controlling the drum to slow down to the target retry speed, the method further includes: Return to the previously described shaking step.

11. The dehydration control method according to claim 4, characterized in that, Prior to the shaking step, the method further includes: The first trial operation step involves controlling the roller to accelerate to the first shaking speed and running for a first preset time. The second trial operation step involves controlling the roller to accelerate to the second shaking speed and running for a second preset time. The calculation steps are as follows: in the first trial run step, the operating parameters are detected and a first calculation result is determined based on the operating parameters; in the second trial run step, the operating parameters are detected and a second calculation result is determined based on the operating parameters. The step of determining the shaking speed involves determining, based on the first calculation result and the second calculation result, either the first shaking speed, the second shaking speed, or a third shaking speed located between the first shaking speed and the second shaking speed as the shaking speed.

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