Self-adaptive control method based on elution oven integrated machine cooperative opening and closing logic

Abstract

The present application relates to a kind of based on elution drying integrated machine cooperative opening and closing logic's self-adapting control method, belongs to intelligent control technical field.Therein, the method includes: collecting cleaning sealing characteristic parameter and comparing with pre-set threshold, executes hierarchical sealing repair operation according to deviation degree;Material dewatering parameter is collected and sealing compensation operation is executed based on dewatering sealing threshold, and dewatering completion signal is generated through the double comparison of parameter variation trend and threshold interval;Collecting dewatering final state characteristic parameter, matching corresponding air door opening transition timing, control air inlet and air outlet air door from full-closed state hierarchical synchronous regulation to drying initial opening and closing state;The cooperative opening and closing state of two air doors is dynamically adjusted, and control parameter is corrected by feedback check.This application realizes the self-adapting regulation of washing and drying integrated machine air door cooperative opening and closing through hierarchical repair, compensation operation and working condition adaptation control, improves drying efficiency and equipment running stability.

Description

Technical Field

[0001] This invention belongs to the field of intelligent control technology, specifically relating to an adaptive control method based on the collaborative opening and closing logic of a washer-dryer combo machine. Background Technology

[0002] With the increasing intelligence of home appliances, washer-dryer combos have gradually become the mainstream product in the household washing machine market due to their advantages such as integrating washing, spin-drying, and drying functions, small footprint, and ease of use. Washer-dryer combos are typically equipped with inlet and outlet air dampers to create a hot air circulation loop during the drying stage and to maintain a seal during the washing and spin-drying stages to prevent moisture leakage.

[0003] Existing washer-dryer combos typically employ a simple, staged opening and closing logic for damper control: the damper remains closed during the washing and dehydration stages, and opens during the drying stage. This control method has the following technical drawbacks: Firstly, there is a lack of effective monitoring and proactive repair mechanisms for the sealing condition. During the cleaning and dehydration stages, the dampers are in a closed state for extended periods. The sealing strips are prone to failure due to foreign object obstruction, aging, or assembly misalignment. Moisture may then enter the air duct or heater through damper gaps, affecting drying efficiency and even causing equipment malfunction. Existing technologies largely rely on hardware sealing structures, lacking real-time monitoring and proactive repair capabilities for the sealing condition. Once a seal fails, it can only be addressed through manual inspection.

[0004] Secondly, the stage switching process lacks refined control. When switching from the dehydration stage to the drying stage, the damper is rapidly switched from a fully closed state to a fully open state, ignoring the difference between the residual moisture content of the material at the end of dehydration and the condensation state of the inner wall of the outer cylinder. When the material moisture content is high or there is condensation on the inner wall of the outer cylinder, rapidly opening the damper can easily cause condensation to backflow into the air duct, affecting the subsequent drying effect.

[0005] Third, the damper control during the drying stage is mostly fixed opening or simple timing control, which cannot dynamically adjust the damper opening, adjustment rate, and timing difference between the two dampers according to real-time operating conditions. This makes it difficult to optimize the hot air circulation efficiency and waste heat recovery effect in a coordinated manner, resulting in high drying energy consumption and low efficiency.

[0006] Therefore, how to achieve adaptive control of the coordinated opening and closing of the dampers throughout the entire process of a washer-dryer combo, thereby improving sealing reliability, smooth stage switching, and energy efficiency in the drying process, has become a pressing technical problem to be solved in this field. Summary of the Invention

[0007] To address the aforementioned problems in the existing technology, this invention provides an adaptive control method based on the collaborative opening and closing logic of a washer-dryer combo machine. The objective of this invention can be achieved through the following technical solutions: S1: During the cleaning phase, the sealing monitoring mechanism is activated to collect cleaning and sealing characteristic parameters in real time. The cleaning and sealing characteristic parameters are compared with the preset cleaning and sealing threshold, and graded sealing repair operations are performed according to the degree of deviation. S2: During the dehydration stage, material dehydration parameters are collected synchronously, and a sealing compensation operation is performed based on the preset dehydration sealing threshold. A dehydration completion signal is generated by comparing the changing trend of material dehydration parameters with the threshold range.

[0008] S3: Based on the dehydration completion signal acquisition, the dehydration final state characteristic parameters at the end of dehydration are collected. Based on the dehydration final state characteristic parameters, the corresponding damper opening transition sequence is matched, and the air inlet damper and air outlet damper are controlled to be synchronously adjusted from the fully closed state to the initial drying opening and closing state through the transition sequence. S4: During the drying stage, the drying condition-damper coordination adaptation mechanism is activated to obtain the operating condition parameters of the drying circuit in real time. Based on the operating condition parameters, the coordinated opening and closing state of the inlet and outlet dampers is dynamically adjusted. At the same time, the adjusted drying condition parameters are obtained for feedback verification to correct the control parameters of the coordinated opening and closing of the dampers.

[0009] Specifically, the sealing monitoring mechanism includes: Raw data of sealing characteristic parameters are collected synchronously at a preset cycle. The raw data is dynamically filtered to generate monitoring data. The monitoring data is continuously compared with the preset cleaning and sealing threshold in real time. At the same time, the characteristic values ​​of parameter change trends are calculated to generate a trigger signal for sealing repair operation.

[0010] Specifically, the process of performing graded sealing repair operations according to the degree of deviation is as follows: The deviation levels are divided according to the deviation values ​​between the cleaning and sealing characteristic parameters and the preset cleaning and sealing threshold. Based on the different sealing repair operation sequences corresponding to different deviation levels, the sealing repair operation sequence matching the current deviation level is called to perform the repair and generate a repair completion instruction.

[0011] Specifically, the sealing compensation operation based on a preset dehydration sealing threshold is performed as follows: The compensation duration coefficient is calculated based on the deviation between the dehydration seal characteristic parameters and the preset dehydration seal threshold. According to the compensation duration coefficient, a duration extension command is output to the dehydration stage, and an intensity adjustment command is output to the dehydration intensity control terminal based on the deviation value to calculate the dehydration intensity compensation coefficient. During the extended duration, dehydration and sealing characteristic parameters are collected synchronously for verification, and a compensation termination command is output based on the verification results.

[0012] Specifically, the process of comparing the changing trends of material dehydration parameters with threshold ranges is as follows: The real-time monitoring values ​​of material dehydration parameters are matched with the preset dehydration threshold range. At the same time, the continuously collected material dehydration parameters are fitted with trends to generate parameter change rate values. The interval matching result and the parameter change rate value are input into the preset dual judgment logic to generate a dehydration completion signal.

[0013] Specifically, the dual-determination logic includes: The system presets the threshold values ​​for the acceptable range of material dehydration parameters and the threshold values ​​for the parameter change rate. It compares the result of the interval matching operation with the threshold values ​​for the acceptable range, and at the same time compares the parameter change rate value with the parameter change rate threshold value. It also presets the logical AND operation rules. When the result of the interval matching operation is within the threshold value for the acceptable range and the parameter change rate value is lower than the parameter change rate threshold value, it generates a dehydration completion signal.

[0014] Specifically, the process of matching the damper opening transition timing based on the dehydration final state characteristic parameters is as follows: The residual moisture content parameter of the material and the condensation state parameter of the inner wall of the outer cylinder are divided into intervals and graded codes respectively. A mapping table is constructed to associate the graded combination of the dehydration final state characteristic parameters with the damper opening transition sequence. Based on the real-time collected data on the residual moisture content of the material and the condensation state parameters of the inner wall of the outer cylinder, the corresponding graded codes are matched and combined to generate the feature code value of the current dehydration final state. Output graded synchronous adjustment commands to the inlet and outlet air dampers to control the two dampers to switch from the fully closed state to the initial opening and closing state of drying.

[0015] Specifically, the process of dividing the material residual moisture content parameter and the condensation state parameter of the outer cylinder inner wall into intervals and classifying them into grades is as follows: Based on historical operating data, statistical distribution analysis of residual moisture content parameters of materials is performed to generate dynamic interval boundaries of moisture content and corresponding moisture content grading codes. Based on historical operating data, feature map analysis is performed on the condensation state parameters of the outer cylinder inner wall to generate dynamic interval boundaries of condensation state and corresponding condensation state classification codes. The moisture content classification code and the condensation state classification code are combined to generate the feature code value of the dehydration final state characteristic parameter, and the feature code value is associated with the damper opening transition sequence.

[0016] Specifically, the drying condition-damper coordinated adaptation mechanism includes: The inlet air temperature, outlet air temperature, and outlet duct wall temperature of the drying circuit are collected in real time. The temperature difference between the outlet air temperature and the inlet air temperature is used as a measure of heat exchange efficiency, and the temperature difference between the outlet duct wall temperature and the inlet air temperature is used as a measure of waste heat recovery status. By inputting the heat exchange efficiency characterization quantity and the waste heat recovery status characterization quantity into the damper collaborative control function, the opening adjustment quantity and action timing offset of the inlet damper and the outlet damper are generated. Based on the opening adjustment amount and the action timing offset, a continuous adjustment command is output to the damper drive end to control the two dampers to dynamically coordinate the opening and timing throughout the drying process.

[0017] Specifically, the process of generating the opening adjustment amount and the action timing offset is as follows: By correlating and coupling the heat exchange efficiency characterization quantity with the waste heat recovery status characterization quantity, a hot air circulation efficiency synergy index is generated. When the hot air circulation efficiency coordination index is lower than the preset threshold, the opening reduction of the inlet and outlet dampers is generated based on the deviation of the heat exchange efficiency characterization quantity. At the same time, the timing delay of the two damper actions is generated based on the deviation of the waste heat recovery status characterization quantity. The opening reduction and timing delay are input into the collaborative weight allocation function, and the weighted and fused opening adjustment and action timing offset are output.

[0018] Specifically, the process for adjusting the control parameters of the damper's coordinated opening and closing is as follows: Based on the real-time operating condition deviation of the drying circuit obtained from feedback verification, the slope of the deviation change of the heat exchange efficiency characterization quantity and the slope of the deviation change of the waste heat recovery status characterization quantity are extracted. The slope of the deviation change is coupled with the absolute value of the deviation to generate the correction priority value of the opening adjustment amount and the correction priority value of the action timing offset. The current opening adjustment amount and action timing offset are iteratively corrected based on the correction priority value, and the correction amplitude is constrained and calibrated by the hot air flow damping coefficient.

[0019] Specifically, the process of coupling the slope of the deviation change with the absolute value of the deviation is as follows: The basic correction amount for opening adjustment is generated based on the absolute value of the deviation of the heat exchange efficiency characterization quantity, and the basic correction amount for action timing offset is generated based on the absolute value of the deviation of the waste heat recovery status characterization quantity. The basic correction amount is dynamically corrected by the slope of the deviation change, and the corrected basic correction amount is input into the collaborative correction logic to generate the corresponding correction priority value.

[0020] The beneficial effects of this invention are as follows: (1) This invention establishes a full-process sealing monitoring and graded repair mechanism. During the cleaning stage, sealing characteristic parameters are collected in real time and compared with preset thresholds. Based on the degree of deviation, multi-level repair operations such as pulse shutdown and position calibration are performed, realizing active fault-tolerant control of the sealing state. When the seal fails, the system can automatically remove foreign objects from the sealing surface or adjust the sealing parameters to prevent water vapor from entering the air duct and affecting subsequent drying efficiency. Compared with the traditional passive method that relies on hardware sealing, this invention extends the sealing control from static structural design to dynamic intelligent regulation, improving the sealing reliability of the washer-dryer in the long-term use process and reducing the equipment failure rate and manual maintenance costs caused by sealing failure.

[0021] (2) This invention achieves cross-stage parameter coordination and operating condition optimization by introducing a sealing compensation operation and a dual dehydration completion determination mechanism during the dehydration stage. When a sealing failure is detected during the dehydration stage, the system automatically extends the dehydration time to reduce the residual moisture content of the material, compensating for the efficiency loss that may be caused by hot air leakage in the subsequent drying stage; at the same time, a dehydration completion signal is generated based on the changing trend of the material dehydration parameters and the dual comparison of the threshold range, avoiding the problem of premature or late termination of dehydration caused by a single threshold determination. This control strategy, which combines cross-stage compensation and precise determination, effectively improves the quality of material pretreatment before drying, laying the foundation for efficient drying in the future.

[0022] (3) This invention achieves refined control of stage switching by constructing a correlation mapping between the final state characteristic parameters of dehydration and the transition timing of damper opening. Based on the hierarchical coding of the residual moisture content of the material and the condensation state parameters of the inner wall of the outer cylinder, the system can dynamically match two transition modes: step-by-step opening or synchronous opening. When there is a risk of condensation, an anti-condensation strategy is adopted, in which the inlet damper is opened first for preheating and the outlet damper is opened later. When the working conditions are good, an efficient strategy of synchronous and rapid opening of both dampers is adopted. This state-aware differentiated transition control solves the technical problem of condensation backflow in traditional stage switching, while improving the smoothness and response speed of the switching process.

[0023] (4) In the drying stage, this invention constructs a damper collaborative adaptation mechanism based on dual indicators of heat exchange efficiency and waste heat recovery. By collecting inlet air temperature, outlet air temperature, and outlet duct wall temperature in real time, the opening value, adjustment rate, and action timing difference of the two dampers are dynamically adjusted. When the heat exchange efficiency is low, the opening of the outlet damper is automatically reduced to prolong the hot air residence time. When the waste heat recovery is saturated, the opening of the two dampers is increased simultaneously to increase the hot air flow, thus achieving synergistic optimization of drying efficiency and energy consumption. At the same time, feedback verification and deviation trend identification are introduced to iteratively correct the control parameters and constrain the correction range through the hot air flow damping coefficient, avoiding operating condition fluctuations and improving the energy efficiency ratio and operational stability of the drying process. Attached Figure Description

[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a flowchart illustrating the adaptive control method based on the collaborative opening and closing logic of a washer-extractor-dryer integrated machine according to the present invention. Figure 2 This is a side view of the outer cylinder structure of the present invention; Figure 3A This is a top view of the air inlet damper structure of the present invention; Figure 3B This is a sectional view along line AA (the air inlet damper is in the closed position). Figure 3C This is a sectional view along line AA (with the air inlet damper in the open position). Figure 4A This is a side view of the air outlet damper structure of the present invention; Figure 4B This is another side view of the air outlet damper structure of the invention (the air outlet damper is in the closed state). Figure 4C This is another side view of the air outlet damper structure of the invention (the air outlet damper is in the open state). Detailed Implementation

[0026] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0027] Please see Figure 1-4C Specifically, it involves an adaptive control method based on the collaborative opening and closing logic of a washer-extractor-dryer combo, including: S1: During the cleaning phase, the sealing monitoring mechanism is activated to collect cleaning and sealing characteristic parameters in real time. The cleaning and sealing characteristic parameters are compared with the preset cleaning and sealing threshold, and graded sealing repair operations are performed according to the degree of deviation. S2: During the dehydration stage, material dehydration parameters are collected synchronously, and a sealing compensation operation is performed based on the preset dehydration sealing threshold. A dehydration completion signal is generated by comparing the changing trend of material dehydration parameters with the threshold range.

[0028] S3: Based on the dehydration completion signal acquisition, the dehydration final state characteristic parameters at the end of dehydration are collected. Based on the dehydration final state characteristic parameters, the corresponding damper opening transition sequence is matched, and the air inlet damper and air outlet damper are controlled to be synchronously adjusted from the fully closed state to the initial drying opening and closing state through the transition sequence. S4: During the drying stage, the drying condition-damper coordination adaptation mechanism is activated to obtain the operating condition parameters of the drying circuit in real time. Based on the operating condition parameters, the coordinated opening and closing state of the inlet and outlet dampers is dynamically adjusted. At the same time, the adjusted drying condition parameters are obtained for feedback verification to correct the control parameters of the coordinated opening and closing of the dampers.

[0029] The coordinated opening and closing state includes the damper opening value, opening adjustment rate, and the timing difference between the two dampers. The cleaning and dehydration sealing characteristic parameters both include sealing surface pressure and sealing gap value. The dehydration sealing characteristic parameter also includes the inner cylinder speed matching value.

[0030] Specifically, the sealing monitoring mechanism includes: The acquisition dimensions of cleaning and sealing characteristic parameters are defined and the continuous acquisition cycle is determined. The raw data of each dimension are collected synchronously according to the cycle. The raw data is subjected to outlier removal and dynamic filtering to obtain effective monitoring data. The effective monitoring data is continuously compared with the preset cleaning and sealing threshold in real time, and the characteristic value of parameter change trend is calculated. When the monitoring data exceeds the threshold or the characteristic value of change trend deviates from the threshold direction continuously, a trigger signal for sealing repair operation is generated. During the monitoring process, parameter change data is continuously recorded to form a full-process data record of sealing status monitoring.

[0031] Specifically, the process of performing graded sealing repair operations according to the degree of deviation is as follows: The deviation levels are classified according to the deviation values ​​between the cleaning and sealing characteristic parameters and the preset cleaning and sealing thresholds, and different deviation levels correspond to different sealing repair operation sequences. The seal repair operation sequence matching the current deviation level is invoked to perform the repair, and the cleaning and sealing characteristic parameters are re-collected and compared with the preset cleaning and sealing threshold after each repair operation. If the comparison result still exceeds the preset threshold range, continue to execute the repair operation sequence corresponding to the current deviation level or switch to the repair operation sequence corresponding to a higher deviation level, and repeat the above repair and comparison process; if the comparison result falls into the preset threshold range, generate a repair completion command.

[0032] Example 1: Sealing monitoring and graded sealing repair operations during the cleaning phase The washer-dryer combo includes a washing machine casing, inside which is an outer tub. The top of the outer tub has an air inlet with an air inlet damper, and the bottom of the outer tub has a water outlet connected to an air outlet pipe. An air outlet damper is installed at the outlet of the air outlet pipe. During the washing cycle, the control system sends a fully closed command to both the air inlet and outlet dampers, keeping both dampers closed.

[0033] I. Specific Implementation of the Sealing Monitoring Mechanism like Figures 3A-3CAs shown, the air intake damper structure includes an air intake damper housing 221, an air intake damper 222, and a pair of air intake cylinders 223. The bottom plate 2211 of the air intake damper housing 221 has an air intake opening 2215 leading to the interior of the outer cylinder, and the air intake opening 2215 is surrounded by a high-temperature resistant sealing strip. The front of the air intake damper 222 is coverably mounted at the air intake opening 2215, and a fixing seat is provided on the back. The air intake cylinders 223 are symmetrically mounted on the front plate 2213 of the air intake damper housing 221, and their push rods are connected to the fixing seats on the back of the air intake damper 222 via push-pull auxiliary components. The push-pull auxiliary components include a hexagonal shaft 224, an inner rocker arm 225, and an outer rocker arm 226, used to convert the linear motion of the cylinders into the opening and closing action of the damper. When the push rod of the air intake cylinder 223 retracts, the air intake damper 222 presses down against the sealing strip to close; when the push rod extends, the air intake damper 222 is lifted up to open.

[0034] The control system synchronously acquires raw data of sealing characteristic parameters at a preset period (e.g., 100ms). These sealing characteristic parameters include the feedback value from the position sensor of the air inlet damper 222 and the detection value from the pressure sensor inside the outer cylinder. The position sensor is a Hall effect sensor, installed on the cylinder body of the air inlet cylinder 223, used to detect the extension length of the push rod, thereby obtaining the actual closed position of the damper.

[0035] The control system dynamically filters the collected raw data to generate monitoring data. Specifically, a moving average filtering algorithm is used, with a filtering window length of 5 sampling periods. Data is collected once per period, and the calculation formula is as follows: Where P(t) is the original collected value at the current time, P filtered (t) represents the filtered monitoring value. Filtering eliminates fluctuations caused by instantaneous sensor noise and external interference, resulting in stable sealing status monitoring data.

[0036] The filtered monitoring data is continuously compared in real time with preset cleaning and sealing thresholds. These thresholds include position and pressure thresholds. The position threshold is set within ±0.2 mm of the standard position value when the damper is fully closed, and the pressure threshold is set within ±5% of the standard sealing pressure value. Simultaneously, the control system calculates the trend characteristics of the parameters, specifically the average rate of change of the monitoring data over three consecutive cycles. Where ΔT is the sampling period. When the monitored data exceeds the cleaning and sealing threshold range, or when the trend value changes in a direction deviating from the threshold for three consecutive periods, the control system generates a trigger signal for the sealing repair operation.

[0037] II. Specific Procedures for Graded Sealing Repair Deviation levels are classified based on the deviation between the cleaning and sealing characteristic parameters and the preset cleaning and sealing threshold. The formula for calculating the deviation value Δ is: Among them, P standard This is the standard position value when the damper is fully closed. This embodiment presets three deviation levels: First level: 0.2mm ≤ Δ < 0.5mm Second level: 0.5mm ≤ Δ < 1.0mm Third level: Δ≥1.0mm Each deviation level corresponds to a different sequence of seal repair operations, which are stored in the memory of the control system.

[0038] When the deviation value is at the first level, the control system invokes the first seal repair operation sequence: outputting a pulse-type closing command to the air intake cylinder 223 of the air intake damper 222, specifically, outputting three short-duration closing signals consecutively within 1 second, each closing signal lasting 0.2 seconds, with an interval of 0.1 seconds. This pulse-type impact removes any tiny fibers or foreign objects that may be stuck on the sealing surface. After each pulse, the sealing characteristic parameters are re-acquired for verification. If the parameters fall back to within the threshold range, a repair completion command is generated.

[0039] When the deviation value is at the second level, the control system invokes the second seal repair operation sequence: first, it performs a three-pulse closure at the first level; if the parameters still do not return to normal, it performs a seal position calibration operation. Specifically, it controls the air inlet damper 222 to fully open to its maximum opening degree, and then slowly closes it. During the closing process, it collects position sensor data in real time and recalibrates the standard position value P when the damper is fully closed. standard After calibration, a pulse shutdown was performed again, and parameters were continuously collected to verify the repair effect.

[0040] When the deviation value is at the third level, the control system invokes the third seal repair operation sequence: first, it performs an emergency seal locking operation, controlling the air inlet damper 222 to remain closed with maximum thrust for 5 seconds, while simultaneously activating the seal compensation logic, recording the seal failure status and transmitting it to the dehydration stage control unit. Then, it cyclically executes the second-level position calibration operation and parameter verification steps until the monitored parameters return to the threshold range.

[0041] After each level of repair operation is completed, the control system records the deviation level, the sequence of repair operations performed, and the repair effect data in association and stores them in non-volatile memory for subsequent iterative optimization of control logic.

[0042] For the air outlet damper, its structure is as follows: Figures 4A-4CAs shown, it includes an air outlet frame 234, an air outlet damper 235, a pair of air outlet cylinders 236, and a V-shaped push rod assembly (including a long cylindrical shaft 237, an upper balance bar 238, and a lower connecting rod 239). During the cleaning phase, the air outlet damper 235 also remains fully closed, and its seal monitoring and repair operations are the same as those of the air inlet damper 222, which will not be described in detail here.

[0043] The beneficial effects of this embodiment are as follows: By establishing a sealing monitoring mechanism and a graded sealing repair operation, real-time monitoring and proactive fault tolerance of the damper sealing status during the cleaning phase are achieved. When foreign objects are stuck on the sealing surface, the pulse-type closing operation can automatically remove the foreign objects, avoiding manual intervention; when sealing parameters drift, the position calibration operation can recalibrate the standard position, ensuring sealing reliability during long-term use. The graded repair strategy adopts different levels of operation according to the degree of deviation, which avoids over-response for minor deviations and ensures emergency handling capabilities for severe deviations.

[0044] Specifically, the sealing compensation operation based on a preset dehydration sealing threshold is performed as follows: The real-time collected dehydration and sealing characteristic parameters are compared with the preset dehydration and sealing threshold for deviation calculation. Based on the deviation amplitude and the duration of deviation, a sealing compensation trigger signal is generated. Based on the sealing compensation trigger signal, a dynamic duration compensation command is output to the dehydration stage control loop. Under the premise of maintaining the air inlet and outlet air doors fully closed, the running time of the dehydration stage is gradually extended according to the preset compensation step sequence. After each step extension, the dehydration sealing characteristic parameters are re-acquired for verification. When the dehydration sealing characteristic parameters fall back to the dehydration sealing threshold range, the current compensated dehydration time is locked as the dehydration completion condition parameter for this batch of materials. At the same time, sealing failure status data is generated and written into the initial parameter configuration table of the drying stage to correct the damper opening setting value of the initial drying state.

[0045] Specifically, the process of comparing the changing trends of material dehydration parameters with threshold ranges is as follows: The real-time monitoring values ​​of material dehydration parameters are matched with the preset dehydration threshold range, and the continuously collected material dehydration parameters are fitted with a trend to generate parameter change rate values. The interval matching operation result and the parameter change rate value are input into a preset dual judgment logic to generate a dehydration completion signal; The dehydration completion signal is transmitted to the stage switching control terminal to trigger the start of the damper transition control mechanism. The dehydration completion command includes the current dehydration time and the residual moisture content of the material, and is transmitted to the damper transition control mechanism.

[0046] Specifically, the dual-determination logic includes: The threshold values ​​for the acceptable range of material dehydration parameters and the threshold values ​​for the parameter change rate are preset. The results of the range matching operation are compared with the threshold values ​​for the acceptable range, and the parameter change rate values ​​are compared with the parameter change rate threshold values. The pre-defined logic and operation rules are used to generate a dehydration completion signal when the interval matching operation result falls into the threshold of the qualified interval and the parameter change rate value is lower than the parameter change rate threshold. When the interval matching operation result does not fall within the threshold of the target interval or the parameter change rate value is higher than the parameter change rate threshold, the material dewatering parameters are continuously collected and the interval matching operation and trend fitting operation are repeated until a dewatering completion signal is generated.

[0047] Example 2: Dehydration Completion Signal Generation and Dual Judgment Logic in the Dehydration Stage I. Application Scenario Setting This embodiment uses the dehydration process of a batch of cotton and linen materials (8kg load) as an example. The washer-dryer has completed the washing stage and entered the dehydration stage. Figure 2 As shown, an inner cylinder (not shown) is provided inside the outer cylinder 21, and the inner cylinder is loaded with cotton and linen materials to be dehydrated. At the beginning of the dehydration stage, the control system outputs a command to the drive motor to gradually increase the rotation speed of the inner cylinder to the dehydration speed (set to 750 r / min in this embodiment).

[0048] II. Real-time acquisition and processing of material dewatering parameters During the dehydration process, the control system collects material dehydration parameters in real time at a preset cycle (set to 1 second in this embodiment). These parameters include the inner cylinder rotation speed, dehydration time, and the residual moisture content of the material indirectly calculated by a weighing sensor or a moisture content sensor. In this embodiment, the residual moisture content is used as the core determination parameter.

[0049] like Figure 2 As shown, the outer cylinder 21 has a water outlet 24 at its bottom, through which the water separated during the dewatering process is discharged. The control system calculates the residual moisture content of the material in real time using a pressure sensor installed at the bottom of the outer cylinder 21 or a torque sensor on the inner cylinder's main shaft. The specific calculation formula is as follows: Where M(t) is the residual moisture content of the material at time t, and W(t) is the total weight of the material calculated by the sensor at time t. dry The preset dry weight of the material after it is completely dried (preset according to the loading volume and material type).

[0050] III. Interval Matching and Trend Fitting Operations The control system performs dual processing on the continuously collected residual moisture content data of the material: 1. Interval matching operation The real-time collected residual moisture content M(t) of the material is matched with the preset dehydration standard threshold. In this embodiment, the preset standard threshold for cotton and linen materials is 8%-12%, that is, when the residual moisture content of the material decreases to the range of 8%-12%, it is considered that the moisture content has met the basic requirements for dehydration.

[0051] The result of the interval matching operation, R interval (t) is defined as: When 8%≤M(t)≤12%, R interval (t)=1 (indicating that the value falls within the acceptable range) When M(t) < 8% or M(t) > 12%, R interval (t)=0 (indicating that the value did not fall within the target range) 2. Trend Fitting Calculation Trend fitting is performed on the continuously collected residual moisture content of the material to calculate the parameter change rate. In this embodiment, a linear fitting method is used, taking the moisture content data from the most recent 5 sampling periods (from t-4 to time t) to calculate the average change rate: Where ΔT is the sampling period (1 second), and V(t) is the parameter change rate value, in % / s. A negative value indicates a decrease in moisture content, and a positive value indicates an increase in moisture content (abnormal situation). In this embodiment, the preset change rate threshold is -0.5% / s, that is, the rate of decrease in moisture content is required to be no less than 0.5% / s.

[0052] IV. Specific Implementation of Dual Decision Logic The control system has preset logic and operation rules, and will use the interval matching operation result R interval The input of parameter change rate value V(t) and the dual-determination logic are used.

[0053] like Figures 4A-4C As shown, the control system's built-in memory stores the logic module for determining the completion of dehydration. This module executes according to the following rules: Rule 1: When R interval When V(t) = 1 (moisture content falls within the 8%-12% range) and V(t) ≤ -0.5% / s (moisture content decrease rate is not less than 0.5% / s), the dehydration condition is deemed to be up to standard, and a dehydration completion signal is generated.

[0054] Rule 2: When R interval When V(t) = 0 or V(t) > -0.5% / s, it is determined that the dewatering condition has not met the standard. The material dewatering parameters are continuously collected and the interval matching operation and trend fitting operation are repeated.

[0055] V. Generation and transmission of dehydration completion signal During an actual dehydration process, the following data sequence was recorded: At t=180s, the residual moisture content of the material, M(180)=10.2%, falls within the range of 8%-12% (R). interval =1), and the rate of change V(180) = -0.5% / s equals the preset threshold, satisfying the judgment condition of rule 1. The control system immediately generates a dehydration completion signal.

[0056] The dehydration completion signal includes the current dehydration duration (180 seconds) and the residual moisture content of the material (10.2%), which are transmitted to the stage switching control terminal via the internal bus of the control system.

[0057] VI. Triggering of Phase Switching like Figure 2 As shown, after receiving the dehydration completion signal, the stage switching control terminal uses it as a trigger condition to activate the damper transition control mechanism. Specifically, based on the received dehydration duration and residual moisture content parameters, the control system prepares to call the transition timing matching program described in step S3 to prepare for the opening of the inlet and outlet dampers.

[0058] In this embodiment, since the residual moisture content of the material is 10.2%, which is at a medium level, the damper transition control mechanism will match the corresponding transition sequence according to the hierarchical coding rules of the subsequent S3 step (see Embodiment 3 for specific implementation).

[0059] VII. Continuous Data Collection and Duplicate Detection During the dehydration process, if the following situations occur, the control system will continuously collect parameters and repeat the judgment: Scenario 1: The moisture content has fallen into the acceptable range, but the rate of decrease is too slow. For example, when M(t) = 11.0% (falling into the range) but V(t) = -0.3% / s (below the threshold), it is judged as not meeting the standard, and dehydration continues.

[0060] Scenario 2: The rate of descent meets the standard, but the moisture content has not yet fallen into the range. For example, when M(t) = 13.5% (not falling into the range) but V(t) = -0.7% / s (above the threshold), it is determined that the standard has not been met, and dehydration continues.

[0061] This dual-judgment mechanism avoids the problems of prematurely ending dehydration (moisture content meets the standard but is still in the rapid dehydration stage) or prematurely ending dehydration (the rate of decrease has slowed down but the moisture content has not yet met the standard) caused by a single threshold judgment.

[0062] The beneficial effects of this embodiment are as follows: By introducing a dual judgment logic of interval matching and rate of change, precise control of the dehydration completion timing is achieved. Interval matching ensures that the residual moisture content of the material reaches the preset standard, while the rate of change judgment ensures that the dehydration process tends to be stable, avoiding misjudgments caused by instantaneous fluctuations. The dual judgment mechanism is particularly suitable for the dehydration needs of different material types, providing stable initial operating conditions for the subsequent drying stage.

[0063] Specifically, the process of matching the damper opening transition timing based on the dehydration final state characteristic parameters is as follows: The residual moisture content parameter of the material and the condensation state parameter of the inner wall of the outer cylinder are divided into intervals and graded codes respectively. A mapping table is constructed to associate the graded combination of the dehydration final state characteristic parameters with the damper opening transition sequence. Based on the real-time collected data on the residual moisture content of the material and the condensation state parameters of the inner wall of the outer cylinder, the corresponding graded codes are matched and combined to generate the feature code value of the current dehydration final state. Using the feature encoding value as an index, the corresponding damper opening transition timing parameter set is extracted from the association mapping table, and the graded synchronous adjustment command generated according to the timing parameter set is output to the air inlet damper and the air outlet damper to control the two dampers to switch from the fully closed state to the initial opening and closing state of drying.

[0064] Specifically, the process of dividing the material residual moisture content parameter and the condensation state parameter of the outer cylinder inner wall into intervals and classifying them into grades is as follows: Based on historical operating data, statistical distribution analysis of residual moisture content parameters of materials is performed to generate moisture content distribution characteristic curves. Based on the inflection point positions in the characteristic curves, dynamic interval boundaries of moisture content and corresponding moisture content grading codes are generated. Based on historical operating data, feature map analysis is performed on the condensation state parameters of the outer cylinder inner wall to generate condensation state characteristic abrupt change points. Based on the characteristic abrupt change points, dynamic interval boundaries of condensation state and corresponding condensation state hierarchical codes are generated. The residual moisture content of the material at the end of the current dehydration is classified into the corresponding dynamic range of moisture content and the moisture content classification code is extracted. The condensation state parameters of the inner wall of the outer cylinder at the end of the current dehydration are classified into the corresponding dynamic range of condensation state and the condensation state classification code is extracted. The moisture content classification code and the condensation state classification code are combined to generate the feature code value of the dehydration final state characteristic parameter. The feature code value is then associated with the damper opening transition sequence to construct an association mapping table between the classification combination of the dehydration final state characteristic parameter and the damper opening transition sequence.

[0065] Example 3: Hierarchical coding of dehydration final state characteristic parameters and matching of damper opening transition timing I. Collection of final-state characteristic parameters of dehydration Following the dehydration completion signal generated in Example 2, the control system synchronously collects two types of dehydration final-state characteristic parameters at the end of dehydration. For example... Figure 2 As shown, the outer cylinder 21 of the washer-extractor-dryer is provided with a water outlet 24 at the bottom and an air inlet 22 at the top. The inlet 231 of the air outlet pipe 23 is connected to the water outlet 24, and the pipe body of the air outlet pipe 23 is attached upwards and tightly attached to the outer wall of the outer cylinder 21.

[0066] In this embodiment, taking a batch of cotton and linen materials (loaded at 8 kg) as an example, the measured residual moisture content of the materials after dehydration was 10.2%. At the same time, the wall temperature was detected by an infrared temperature sensor installed on the inner wall of the outer cylinder 21. Combined with the temperature difference between the inlet 231 and outlet 233 of the air outlet duct 23, the condensation state parameter of the inner wall of the outer cylinder was calculated to be 15% (expressed as the proportion of condensate coverage area).

[0067] II. Interval Division and Grading Coding of Moisture Content Parameter The control system pre-divides the residual moisture content of the material into intervals based on historical operating data. By statistically analyzing the moisture content data at the end of the dewatering process for the same type of material over the past 100 cycles, a moisture content distribution characteristic curve is generated. Based on the inflection point positions in the characteristic curve, the moisture content is divided into three dynamic intervals: Low moisture content range: 5%-8% Medium moisture content range: 8%-12% High moisture content range: 12%-15% Each interval is assigned an independent moisture content classification code: the low moisture content interval is coded as L, the medium moisture content interval is coded as M, and the high moisture content interval is coded as H.

[0068] In this embodiment, the measured residual moisture content of the material is 10.2%, which is in the medium moisture content range. Therefore, the moisture content classification code is M.

[0069] III. Interval Division and Grading Coding of Condensation State Parameters The control system also divides the condensation state of the outer cylinder inner wall into intervals based on historical operating data. By performing characteristic spectrum analysis on the condensation state data at the end of the past 100 dehydration cycles, a condensation state characteristic curve is generated. Based on the location of abrupt change points in the characteristic curve, the condensation state is divided into three dynamic intervals: Low condensation range: 0%-10% (virtually no condensation) Medium condensation range: 10%-25% (small amount of condensate) High condensation range: 25%-40% (obvious condensation) Each zone is assigned an independent condensation state classification code: the low condensation zone is coded as N, the medium condensation zone as S, and the high condensation zone as O.

[0070] In this embodiment, the measured condensation state parameter 15% is in the medium condensation range, so the condensation state classification code is extracted as S.

[0071] IV. Generation of Feature Code Value Combinations The moisture content classification code M is combined with the condensation state classification code S to generate the characteristic code value MS for the current final state of dehydration. This characteristic code value uniquely represents the operating condition at the end of the current dehydration: moderate moisture content with a small amount of condensate.

[0072] V. Matching Rules for the Transition Timing of Damper Opening The control system has a pre-defined matching rule between the dehydration final state characteristic code and the damper opening transition timing. This matching rule is stored in the control program in the form of conditional judgment logic, rather than a static table.

[0073] For the feature encoding MS, the matching rules are as follows: Damper opening mode: Step-by-step medium-speed opening Air intake damper opening rate: 70% / s Air outlet damper opening rate: 70% / s The timing difference between the two dampers is 0.8 seconds (the inlet damper opens first, and the outlet damper opens 0.8 seconds later). The matching rule is set based on the fact that moderate moisture content requires moderate preheating to prevent condensation, but the amount of condensate is small and does not require a long delay. Therefore, a balance is achieved between preventing condensation and rapid switching.

[0074] VI. Execution of hierarchical synchronous adjustment commands like Figures 3A-3C As shown, the control system outputs an opening command to the air inlet damper 222 according to the matching rules. The air inlet cylinder 223 of the air inlet damper 222 extends its push rod at a rate of 70% / s, and the air inlet damper 222 is opened from the opening position by the push-pull auxiliary component. Figure 3B The fully closed state shown is raised to Figure 3C The state shown is on, and the on process lasts 1.43 seconds.

[0075] like Figures 4A-4C As shown, the control system starts a 0.8-second timer after the inlet damper 222 is given an opening command. At the end of the timer, an opening command is sent to the outlet damper 235. The outlet cylinder 236 of the outlet damper 235 extends its push rod at the same rate of 70% / s, and the V-shaped push rod opens the outlet damper 235 from... Figure 4B The fully closed state shown is raised to Figure 4C The on state shown also lasts for 1.43 seconds during the on process.

[0076] VII. Examples of Matching Rules under Different Working Conditions To illustrate the adaptability of the matching rules, the following typical operating conditions are listed: When the feature code is LN (low moisture content and no condensation), the matching rule is a synchronous rapid opening mode: both the inlet and outlet air dampers open simultaneously at a rate of 100% / s, and both dampers reach the initial drying state synchronously within 1 second. This rule is suitable for scenarios with good operating conditions and no need for anti-condensation, allowing for rapid entry into the drying stage.

[0077] When the feature code is HO (high moisture content and significant condensation), the matching rule is a step-by-step ultra-slow opening mode: the intake air damper opens at a rate of 30% / s, and the exhaust air damper opens at the same rate after a 2.0-second delay. The intake air damper opens first to preheat, raising the temperature inside the outer cylinder above the dew point. After the condensation evaporates, the exhaust air damper opens, effectively preventing condensation backflow.

[0078] When the feature code is MN (medium moisture content and no condensate), the matching rule is synchronous medium-speed opening mode: the two dampers open simultaneously at a rate of 80% / s, balancing efficiency and stability.

[0079] When the feature code is LS (low moisture content but small amount of condensate), the matching rule is a step-by-step medium-speed opening mode: the air inlet damper opens at 80% / s, and the air outlet damper opens at the same rate after a delay of 0.5 seconds, so as to moderately preheat and prevent condensation.

[0080] VIII. Dynamic Update Mechanism for Matching Rules The control system establishes a self-learning update mechanism. After each full-process operation, it records the dehydration final state characteristic code, the actual damper opening transition timing, and the energy efficiency data of the drying stage. By analyzing the optimal transition timing corresponding to different characteristic codes, the opening rate and timing difference parameters in the matching rules are dynamically adjusted to achieve iterative optimization of the control logic.

[0081] Specifically, the drying condition-damper coordinated adaptation mechanism includes: The inlet air temperature, outlet air temperature, and outlet duct wall temperature of the drying circuit are collected in real time. The temperature difference between the outlet air temperature and the inlet air temperature is used as a measure of heat exchange efficiency, and the temperature difference between the outlet duct wall temperature and the inlet air temperature is used as a measure of waste heat recovery status. By inputting the heat exchange efficiency characterization quantity and the waste heat recovery status characterization quantity into the damper collaborative control function, the opening adjustment quantity and action timing offset of the inlet damper and the outlet damper are generated. Based on the opening adjustment amount and the action timing offset, continuous adjustment commands are output to the damper drive end to control the dynamic coordination of the opening and timing of the two dampers throughout the drying process. The opening adjustment amount is used to adjust the damper opening value, and the action timing offset is used to adjust the action timing difference and opening adjustment rate of the two dampers. The heat exchange efficiency is characterized by the temperature difference between the outlet air temperature and the inlet air temperature, reflecting the degree of heat exchange of hot air in the drying circuit. The waste heat recovery status is characterized by the temperature difference between the outlet duct wall temperature and the inlet air temperature, reflecting the degree of heat recovery through the outlet duct wall to the outer cylinder.

[0082] Specifically, the process of generating the opening adjustment amount and the action timing offset is as follows: By correlating and coupling the heat exchange efficiency characterization quantity with the waste heat recovery status characterization quantity, a hot air circulation efficiency synergy index is generated. When the hot air circulation efficiency coordination index is lower than the preset threshold, the opening reduction of the inlet and outlet dampers is generated based on the deviation of the heat exchange efficiency characterization quantity. At the same time, the timing delay of the two damper actions is generated based on the deviation of the waste heat recovery status characterization quantity. The opening reduction and timing delay are input into the collaborative weight allocation function, and the weighted and fused opening adjustment and action timing offset are output.

[0083] Specifically, the process for adjusting the control parameters of the damper's coordinated opening and closing is as follows: Based on the real-time operating condition deviation of the drying circuit obtained from feedback verification, the slope of the deviation change of the heat exchange efficiency characterization quantity and the slope of the deviation change of the waste heat recovery status characterization quantity are extracted. The slope of the deviation change is coupled with the absolute value of the deviation to generate the correction priority value of the opening adjustment amount and the correction priority value of the action timing offset. The current opening adjustment amount and action timing offset are iteratively corrected according to the correction priority value. During the correction process, the correction amplitude is constrained and calibrated by the hot air flow damping coefficient, wherein the hot air flow damping coefficient is a dimensionless coefficient based on the cross-sectional area of ​​the drying circuit duct and the preset hot air velocity.

[0084] Specifically, the coupling operation of the deviation change slope and the absolute value of the deviation is performed as follows: a basic correction amount for opening adjustment is generated based on the absolute value of the deviation of the heat exchange efficiency characterization quantity; a basic correction amount for action timing offset is generated based on the absolute value of the deviation of the waste heat recovery status characterization quantity; a correction priority value is determined based on the coupling operation result of the deviation change slope and the absolute value of the deviation; the basic correction amount is dynamically corrected based on the correction priority value; the corrected basic correction amount is input into the collaborative correction logic to generate a corresponding correction priority value, wherein the collaborative correction logic is a weighted operation rule with the correction priority of the heat exchange efficiency characterization quantity being higher than that of the waste heat recovery status characterization quantity.

[0085] Example 4: Damper Coordination and Parameter Correction Control during the Drying Stage This embodiment corresponds to the drying stage control described in S4 of claim 1, specifically implementing the drying condition-damper collaborative adaptation mechanism described in claim 9, the opening adjustment amount and action timing offset generation process described in claim 10, the control parameter correction process described in claim 11, and the coupled calculation of deviation change slope and deviation absolute value described in claim 12.

[0086] I. Initial State Setting of Drying Stage This embodiment follows the stage switching control of Embodiment 3, using the operating condition corresponding to the feature code MS as the initial state. For example... Figure 2 As shown, the washer-dryer has completed the switch from the dehydration stage to the drying stage. The inlet and outlet air dampers have switched to the initial drying opening and closing state according to the step-by-step medium-speed opening mode. At this time, the initial moisture content of the cotton and linen material (8kg) loaded inside the outer cylinder 21 is 10.2%, and there is a small amount of condensate (15%) on the inner wall of the outer cylinder.

[0087] like Figures 3A-3C The air inlet damper 222 shown and as shown Figures 4A-4C The air outlet dampers 235 shown are all opened to their initial opening degree (set to 30% opening degree in this embodiment), ready to enter the drying stage. The heater 40 is started and the fan 50 starts to run, forming a hot air circuit that enters through the air inlet damper 222, flows through the material in the outer cylinder 21, is discharged through the air outlet pipe 23, and is circulated by the fan 50.

[0088] II. Real-time acquisition and characterization calculation of drying condition parameters The control system collects the operating parameters of the drying circuit in real time according to a preset cycle. For example... Figure 2 As shown, the inlet air temperature is collected by a temperature sensor installed near the air inlet 22 and is denoted as Tin; the outlet air temperature is collected by a temperature sensor installed near the outlet 233 of the outlet duct 23 and is denoted as Tout; the outlet duct wall temperature is collected by a temperature sensor attached to the outer wall of the outlet duct 23 and is denoted as Twall.

[0089] The control system calculates two types of characterization quantities based on the collected temperature parameters: The heat exchange efficiency metric ΔTex is the temperature difference between the outlet air temperature and the inlet air temperature. , This characteristic reflects the degree of heat exchange after hot air flows through the material in the drying circuit. The larger the ΔTex value, the more moisture the hot air removes from the material, and the higher the heat exchange efficiency; conversely, the smaller the ΔTex value, the lower the heat exchange efficiency.

[0090] The waste heat recovery status characterization quantity ΔTre is the temperature difference between the outlet duct wall temperature and the inlet air temperature: , As Figure 2 shown, the body of the air outlet pipe 23 climbs upwards from the inlet 231 and clings tightly to the outer wall of the outer cylinder 21. When hot air passes through the air outlet pipe 23, part of the heat is conducted to the outer cylinder 21 through the pipe wall, realizing waste heat recovery. The larger the value of ΔTre, the higher the temperature of the air outlet pipe wall surface, the more sufficient the heat conduction, and the better the waste heat recovery effect; the smaller the value, the more it indicates that the heat is discharged without being effectively recovered.

[0091] III. Generation and determination of the hot air flow efficiency coordination index The control system correlates and couples the heat exchange efficiency characterization quantity ΔTex and the waste heat recovery state characterization quantity ΔTre to generate the hot air flow efficiency coordination index C: , where ΔTex_ref and ΔTre_ref are respectively the preset heat exchange efficiency reference value and waste heat recovery state reference value, which are determined in advance through experiments according to the material type and loading amount (in this embodiment, for cotton and linen materials, ΔTex_ref = 8°C and ΔTre_ref = 20°C are set); α and β are weight coefficients, satisfying α + β = 1, and in this embodiment, for cotton and linen materials, α = 0.6 and β = 0.4 are set.

[0092] The control system presets the hot air flow efficiency coordination index threshold Cth = 0.8. When C ≥ Cth, it indicates that the current hot air flow efficiency is in a good state, and the current damper parameters are maintained; when C < Cth, it indicates that the hot air flow efficiency is low, and the damper parameters need to be adjusted for optimization.

[0093] IV. Damper parameter adjustment based on the coordination index When the hot air flow efficiency coordination index is lower than the preset threshold, the control system generates a reduction amount of the opening degree according to the deviation degree of the heat exchange efficiency characterization quantity. The formula for calculating the deviation degree Dex is: , The reduction amount of the opening degree ΔK is proportional to the deviation degree: , where K base is the basic time sequence delay step, which is set to 5% in this embodiment.

[0094] The control system also generates a time sequence delay amount according to the deviation degree of the waste heat recovery state characterization quantity. The formula for calculating the deviation degree Dre is: , The time sequence delay amount ΔTdelay is proportional to the deviation degree: Where Tbase is the basic timing delay step, which is set to 0.5 seconds in this embodiment.

[0095] The control system outputs the reduction in opening degree and the timing delay as adjustment commands to the drive terminals of the inlet and outlet dampers, respectively. The reduction in opening degree is used to decrease the opening value of the two dampers, and the timing delay is used to extend the opening delay time of the outlet damper relative to the inlet damper, thereby extending the residence time of hot air in the drying circuit.

[0096] V. Feedback Verification and Correction of Control Parameters During the drying process, the control system continuously collects the adjusted operating parameters for feedback verification and iteratively corrects the control parameters based on the deviation.

[0097] The control system extracts the change sequence of the heat exchange efficiency characterization quantity over multiple consecutive cycles and calculates its deviation slope (Sex): Where n is the selected number of periods (set to 3 in this embodiment), and Δt is the sampling period (5 seconds). Similarly, the slope of the deviation change of the waste heat recovery status characterization quantity Sre is calculated.

[0098] When Sex is positive, it indicates that the heat exchange efficiency is approaching the target value and the adjustment effect is good; when Sex is negative, it indicates that the heat exchange efficiency is deviating further from the target and the adjustment effort needs to be increased.

[0099] The control system couples the slope of the deviation change with the absolute value of the deviation to generate a correction priority value P for the opening adjustment. K And the correction priority value P of the action timing offset T : , , Wherein, λ and μ are slope influence coefficients, used to make the slope dimensionless (in this embodiment, λ is set to 10 seconds / ℃ and μ to 5 seconds / ℃). When the slope of the deviation change is positive (approaching the target), 1-λ·Sex is less than 1, the correction priority value is reduced, and over-adjustment is avoided; when the slope of the deviation change is negative (deviating from the target), 1-λ·Sex is greater than 1, the correction priority value is increased, and the adjustment intensity is increased.

[0100] To prevent excessive adjustment from interrupting hot air circulation, the control system introduces a hot air flow damping coefficient ξ to constrain the correction amplitude. The hot air flow damping coefficient is calculated based on the cross-sectional area A of the drying circuit duct and the hot air velocity v. , where Q ref For reference hot air flow rate, it is set to 0.5m in this embodiment. 3 / s. When the actual hot air flow rate is lower than the reference flow rate, the damping coefficient is less than 1, limiting the adjustment range; when the actual flow rate is sufficient, the damping coefficient is 1, and there is no limitation on adjustment.

[0101] The control system generates a basic correction value based on the absolute value of the deviation, and then performs dynamic correction based on the correction priority value and the damping coefficient. , , where ΔK max and ΔT max The maximum allowable correction amount for a single operation is set to 10% and 0.5 seconds in this embodiment. The final correction amount is added to the current opening adjustment amount and the action timing offset to generate updated control parameters, which are then output to the damper drive for execution.

[0102] VI. Execution of Collaborative Correction Logic The control system prioritizes the correction of heat exchange efficiency metrics over waste heat recovery status metrics, and executes coordinated correction logic. When the heat exchange efficiency indicator fails to meet the standard (ΔTex < ΔTex_ref), the damper opening is adjusted first; if the heat exchange efficiency meets the standard, the timing difference of the action is adjusted according to the waste heat recovery status; when both types of deviations exist simultaneously, the correction amount is allocated according to the above correction priority value.

[0103] In the initial stage of drying, the hot air circulation efficiency coordination index is lower than the threshold. The control system reduces the opening and adjusts the timing, gradually reducing the opening of the damper and gradually extending the timing difference to prolong the hot air residence time and accelerate the material temperature rise.

[0104] During the constant-speed drying period, the hot air circulation efficiency coordination index gradually increases to above the threshold, and the control system maintains the current damper parameters to maintain a stable drying state.

[0105] During the slow-drying period, the moisture content of the material drops to a low level, and the heat exchange efficiency begins to decline. The control system predicts the trend based on the slope of the deviation change and reduces the opening adjustment step size in advance to avoid over-drying.

[0106] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An adaptive control method based on the coordinated opening and closing logic of a washer-extractor-dryer combo, characterized in that, include: S1: During the cleaning phase, the sealing monitoring mechanism is activated to collect cleaning and sealing characteristic parameters in real time. The cleaning and sealing characteristic parameters are compared with the preset cleaning and sealing threshold, and graded sealing repair operations are performed according to the degree of deviation. S2: During the dehydration stage, material dehydration parameters are collected synchronously and a sealing compensation operation is performed based on the preset dehydration sealing threshold. A dehydration completion signal is generated by comparing the changing trend of material dehydration parameters with the threshold range. S3: Based on the dehydration completion signal acquisition, the dehydration final state characteristic parameters at the end of dehydration are collected. Based on the dehydration final state characteristic parameters, the corresponding damper opening transition sequence is matched, and the air inlet damper and air outlet damper are controlled to be synchronously adjusted from the fully closed state to the initial drying opening and closing state through the transition sequence. S4: During the drying stage, the drying condition-damper coordination adaptation mechanism is activated to obtain the operating condition parameters of the drying circuit in real time. Based on the operating condition parameters, the coordinated opening and closing state of the inlet and outlet dampers is dynamically adjusted. At the same time, the adjusted drying condition parameters are obtained for feedback verification to correct the control parameters of the coordinated opening and closing of the dampers.

2. The method according to claim 1, characterized in that, The sealing monitoring mechanism includes: Raw data of sealing characteristic parameters are collected synchronously at a preset cycle. The raw data is dynamically filtered to generate monitoring data. The monitoring data is continuously compared with the preset cleaning and sealing threshold in real time. At the same time, the characteristic values ​​of parameter change trends are calculated to generate a trigger signal for sealing repair operation.

3. The method according to claim 1, characterized in that, The specific process for performing graded sealing repair operations based on the degree of deviation is as follows: The deviation levels are divided according to the deviation values ​​between the cleaning and sealing characteristic parameters and the preset cleaning and sealing threshold. Based on the different sealing repair operation sequences corresponding to different deviation levels, the sealing repair operation sequence matching the current deviation level is called to perform the repair and generate a repair completion instruction.

4. The method according to claim 1, characterized in that, The sealing compensation operation based on a preset dehydration sealing threshold is performed as follows: The compensation duration coefficient is calculated based on the deviation between the dehydration seal characteristic parameters and the preset dehydration seal threshold. According to the compensation duration coefficient, a duration extension command is output to the dehydration stage, and an intensity adjustment command is output to the dehydration intensity control terminal based on the deviation value to calculate the dehydration intensity compensation coefficient. During the extended duration, dehydration and sealing characteristic parameters are collected synchronously for verification, and a compensation termination command is output based on the verification results.

5. The method according to claim 1, characterized in that, The specific process involves comparing the changing trends of material dehydration parameters with threshold ranges: The real-time monitoring values ​​of material dehydration parameters are matched with the preset dehydration threshold range. At the same time, the continuously collected material dehydration parameters are fitted with trends to generate parameter change rate values. The interval matching result and the parameter change rate value are input into the preset dual judgment logic to generate a dehydration completion signal.

6. The method according to claim 5, characterized in that, The dual-determination logic includes: The system presets the threshold values ​​for the acceptable range of material dehydration parameters and the threshold values ​​for the parameter change rate. It compares the result of the interval matching operation with the threshold values ​​for the acceptable range, and at the same time compares the parameter change rate value with the parameter change rate threshold value. It also presets the logical AND operation rules. When the result of the interval matching operation is within the threshold value for the acceptable range and the parameter change rate value is lower than the parameter change rate threshold value, it generates a dehydration completion signal.

7. The method according to claim 1, characterized in that, The specific process of matching the damper opening transition timing based on the dehydration final state characteristic parameters is as follows: The residual moisture content parameter of the material and the condensation state parameter of the inner wall of the outer cylinder are divided into intervals and graded codes respectively. A mapping table is constructed to associate the graded combination of the dehydration final state characteristic parameters with the damper opening transition sequence. Based on the real-time collected data on the residual moisture content of the material and the condensation state parameters of the inner wall of the outer cylinder, the corresponding graded codes are matched and combined to generate the feature code value of the current dehydration final state. Output graded synchronous adjustment commands to the inlet and outlet air dampers to control the two dampers to switch from the fully closed state to the initial opening and closing state of drying.

8. The method according to claim 7, characterized in that, The residual moisture content parameter of the material and the condensation state parameter of the inner wall of the outer cylinder are respectively divided into intervals and graded codes, specifically as follows: Based on historical operating data, statistical distribution analysis of material residual moisture content parameters is performed to generate dynamic range boundaries of moisture content and corresponding moisture content grading codes. Based on historical operating data, feature map analysis is performed on the condensation state parameters of the outer cylinder inner wall to generate dynamic interval boundaries of condensation state and corresponding condensation state classification codes. The moisture content classification code and the condensation state classification code are combined to generate the feature code value of the dehydration final state characteristic parameter, and the feature code value is associated with the damper opening transition sequence.

9. The method according to claim 1, characterized in that, The drying condition-damper coordinated adaptation mechanism specifically includes: The inlet air temperature, outlet air temperature, and outlet duct wall temperature of the drying circuit are collected in real time. The temperature difference between the outlet air temperature and the inlet air temperature is used as a measure of heat exchange efficiency, and the temperature difference between the outlet duct wall temperature and the inlet air temperature is used as a measure of waste heat recovery status. By inputting the heat exchange efficiency characterization quantity and the waste heat recovery status characterization quantity into the damper collaborative control function, the opening adjustment quantity and action timing offset of the inlet damper and the outlet damper are generated. Based on the opening adjustment amount and the action timing offset, a continuous adjustment command is output to the damper drive end to control the two dampers to dynamically coordinate the opening and timing throughout the drying process.

10. The method according to claim 9, characterized in that, The specific process for generating the opening adjustment amount and the action timing offset is as follows: By correlating and coupling the heat exchange efficiency characterization quantity with the waste heat recovery status characterization quantity, a hot air circulation efficiency synergy index is generated. When the hot air circulation efficiency coordination index is lower than the preset threshold, the opening reduction of the inlet and outlet dampers is generated based on the deviation of the heat exchange efficiency characterization quantity. At the same time, the timing delay of the two damper actions is generated based on the deviation of the waste heat recovery status characterization quantity. The opening reduction and timing delay are input into the collaborative weight allocation function, and the weighted and fused opening adjustment and action timing offset are output.

11. The method according to claim 1, characterized in that, The specific process for adjusting the control parameters of the damper's coordinated opening and closing is as follows: Based on the real-time operating condition deviation of the drying circuit obtained by feedback verification, the deviation change slope of the heat exchange efficiency characterization quantity and the deviation change slope of the waste heat recovery status characterization quantity are extracted. The slope of the deviation change is coupled with the absolute value of the deviation to generate the correction priority value of the opening adjustment amount and the correction priority value of the action timing offset. The current opening adjustment amount and action timing offset are iteratively corrected based on the correction priority value, and the correction amplitude is constrained and calibrated by the hot air flow damping coefficient.

12. The method according to claim 11, characterized in that, The specific process of coupling the slope of the deviation change with the absolute value of the deviation is as follows: The basic correction amount for opening adjustment is generated based on the absolute value of the deviation of the heat exchange efficiency characterization quantity, and the basic correction amount for action timing offset is generated based on the absolute value of the deviation of the waste heat recovery status characterization quantity. The basic correction amount is dynamically corrected by the slope of the deviation change, and the corrected basic correction amount is input into the collaborative correction logic to generate the corresponding correction priority value.

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