CN102191660B - Method and device for controlling dehydration of washing machine - Google Patents
Method and device for controlling dehydration of washing machine Download PDFInfo
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- CN102191660B CN102191660B CN2010101185312A CN201010118531A CN102191660B CN 102191660 B CN102191660 B CN 102191660B CN 2010101185312 A CN2010101185312 A CN 2010101185312A CN 201010118531 A CN201010118531 A CN 201010118531A CN 102191660 B CN102191660 B CN 102191660B
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Abstract
The invention provides a method and a device for controlling dehydration of a washing machine. The method comprises the following steps of: at the starting of the dehydration, acquiring acceleration data; calculating displacement of an outer barrel of the washing machine according to the acquired acceleration data; judging whether the displacement of the outer barrel of the washing machine is greater than a displacement limit value; when the displacement is not greater than the displacement limit value, judging whether the current rotating speed of the outer barrel of the washing machine reaches a set maximum rotating speed, if the current rotating speed of the outer barrel of the washing machine does not reach the set maximum rotating speed, controlling a motor driving circuit to increase a target rotating speed, and if the current rotating speed of the outer barrel of the washing machine reaches the set maximum rotating speed, keeping the current rotating speed until the end of the dehydration; and when the displacement is greater than the displacement limit value, judging whether the current rotating speed is greater than a set safety rotating speed, if the current rotating speed is not greater than the set safety rotating speed, controlling the motor driving circuit to stop a motor, and if the current rotating speed is greater than the set safety rotating speed, controlling the motor driving circuit to decrease the target rotating speed and keeping dehydrating. By the invention, the shortcomings of the conventional method and the conventional device for controlling dehydration of the washing machine can be solved, so that the washing machine can get higher counter balance and dehydration performance.
Description
Technical field
The present invention relates to washing machine, especially laundry machine dehydration control method and device are applicable to outer barrel vibration of washing machine are measured and controlled.
Background technology
The dehydration of washing machine is the significant process in the washing, hits bucket, acutely rocks, is shifted even causes peril if control the bad machine that may cause; If do not dewater on the other hand, clothing can't obtain again drying.Therefore how can obtain preferably that dewatering can keep the stable of machine again, be a difficult problem in the industry always.
Usually we call imbalance to the situation pockety of clothing in the bucket.Traditional laundry machine dehydration control method needs a special water smoking (about 90rpm); Come the amount of unbalance in the analog computation bucket through measuring the rotating speed of motor difference; Measurements and calculations amount of unbalance no longer in dehydration subsequently then, and the maximum speed that can reach according to the size decision of the amount of unbalance that has recorded.
But this method is non real-time, can not represent the amount of unbalance that constantly changes in the whole dehydration at the amount of unbalance that particular stage records; Because the sampling time is longer, cause machine to make reaction timely simultaneously to the bucket that hits that takes place in the sampling process; Owing to be not the displacement of directly measuring bucket, it is very big to cause measuring the amount of unbalance error of calculating gained in addition.
Summary of the invention
The present invention can solve the weak point of conventional washer dehydration controlling method and device, makes washing machine obtain better balance and dewatering.
According to an aspect of the present invention, propose a kind of laundry machine dehydration control method, may further comprise the steps: when the dehydration beginning, gather acceleration information; Calculate the displacement of outer barrel of washing machine according to the acceleration information that obtains; Whether the displacement of judging outer barrel of washing machine surpasses the offset qualification value; When displacement does not surpass the offset qualification value; Judge whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting, if do not reach, then controlling motor-drive circuit increases rotating speed of target; If reached maximum (top) speed, then keep current rotating speed to finish up to dehydration; When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.
Further, the control motor-drive circuit is ended the operation of motor, and is further comprising the steps of: judge whether the dehydration number of attempt arrives maximum set point number, if, process ends, otherwise restart dehydration after increasing the dehydration number of attempt.
Further, offset qualification value is set at different numerical in the different dehydration control stages.
According to a further aspect in the invention, also propose a kind of laundry machine dehydration control device, comprising: motor-drive circuit is used for drive motors; Motor is used to drive washing machine and rotates; Accelerometer is fixed on the outer barrel of washing machine, measures the vibration of washing machine and the acceleration information that collects is fed back to microprocessor; The motor speed feedback circuit obtains the current rotating speed of motor for washer, and sends current rotating speed to microprocessor; Microprocessor calculates the displacement of outer barrel of washing machine according to the acceleration information that obtains, and whether the displacement of judging outer barrel of washing machine is above the offset qualification value; When displacement does not surpass the offset qualification value; Judge whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting, if do not reach, then controlling motor-drive circuit increases rotating speed of target; If reached maximum (top) speed, then keep current rotating speed to finish up to dehydration; When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.
Further, microprocessor comprises: data acquisition unit, gather acceleration information and the current rotating speed of washing machine; Computing unit calculates the displacement of outer barrel of washing machine according to the acceleration information that obtains; Control module; Whether the displacement of judging outer barrel of washing machine surpasses the offset qualification value, when displacement does not surpass the offset qualification value, judges whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting; If do not reach; Then controlling motor-drive circuit increases rotating speed of target, if reached maximum (top) speed, then keeps current rotating speed to finish up to dehydration; When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.
Further, control module is ended in the process of motor at the control motor-drive circuit, judges also whether the dehydration number of attempt arrives maximum set point number, if, process ends, otherwise after increasing the dehydration number of attempt, restart dehydration.
Further, offset qualification value is set at different numerical in the different dehydration control stages.
According to a further aspect in the invention, also propose a kind of microprocessor that is used for laundry machine dehydration control, comprising: data acquisition unit, gather acceleration information and the current rotating speed of washing machine; Computing unit calculates the displacement of outer barrel of washing machine according to the acceleration information that obtains; Control module; Whether the displacement of judging outer barrel of washing machine surpasses the offset qualification value, when displacement does not surpass the offset qualification value, judges whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting; If do not reach; Then controlling motor-drive circuit increases rotating speed of target, if reached maximum (top) speed, then keeps current rotating speed to finish up to dehydration; When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.
Further, control module is ended in the process of motor at the control motor-drive circuit, judges also whether the dehydration number of attempt arrives maximum set point number, if, process ends, otherwise restart dehydration after increasing the dehydration number of attempt.
The invention provides a kind of laundry machine dehydration control method and device, the vibration acceleration of bucket outside the complete monitoring is adjusted rotating speed of motor real-time dynamicly in the process of dehydration.Can measure in real time and control outer barrel of washing machine vibration, reduce amount of unbalance measure error to realize accurate control, to prevent that washing machine from hitting bucket and can when hitting barrel, make timely and react, make dehydration to reach maximal rate most possibly and shorten dewatering time.
Description of drawings
Fig. 1 is a laundry machine dehydration control device structure chart of the present invention.
Fig. 2 is the dehydration control flow chart of laundry machine dehydration control device of the present invention.
Fig. 3 is water desorption curve of the present invention and corresponding rotating speeds control curve synoptic diagram thereof.
The specific embodiment
Fig. 1 is a laundry machine dehydration control device structure chart of the present invention.On the washing machine control panel, comprise microprocessor 2, motor-drive circuit 3, motor speed feedback circuit 5 and other circuit; Concrete annexation is: microprocessor 2 links to each other with accelerometer 1, motor-drive circuit 3, motor speed feedback circuit 5 respectively, and motor 4 links to each other with motor-drive circuit 3, motor speed feedback circuit 5 respectively.
To combine accompanying drawing to specify the annexation and the operation principle of each circuit below.
Motor-drive circuit 3 is used for drive motors.
Accelerometer 1 is fixed on the outer barrel of washing machine, is used to measure the vibration of machine and the acceleration information that collects is fed back to microprocessor 2.
Motor speed feedback circuit 5 obtains the current rotating speed of motor for washer 4, and sends current rotating speed to microprocessor 2.Current rotating speed is meant washing machine actual speed at a time.
Microprocessor 2 calculates the displacement of outer barrel of washing machine based on the acceleration information that obtains; Whether the displacement of judging outer barrel of washing machine surpasses the offset qualification value, when displacement does not surpass the offset qualification value, judges whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting; If do not reach; Then controlling motor-drive circuit increases rotating speed of target, if reached maximum (top) speed, then keeps current rotating speed to finish up to dehydration; When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.
The displacement of outer bucket also can be big more when under equal conditions, rotating if the imbalance in the bucket is bigger.So for each machine,, need the maximum displacement of a permission of regulation, be called offset qualification value a here for guaranteeing machine safety.In whole dehydration control, can dehydration be divided into each dehydration control stage, the offset qualification value is set at different numerical in the different dehydration control stages.
According to the architectural characteristic of washing machine,, need to set a safe speed of rotation c, usually between 200-350RPM for preventing rotating speed of target is set at a velocity amplitude of resonance point rotating speed.
Rotating speed of target is meant microprocessor in the regulation and control motor, the rotating speed that the hope of setting can reach, and this is a variate-value.
Maximum (top) speed is meant the rotating speed of the maximum that dehydrating speed that type according to washing machine, user set is decided.After the user set, this numerical value had promptly been confirmed.In the dehydration of reality, microprocessor can dynamically be adjusted actual rotating speed based on the loading condition in the bucket, and promptly the actual speed of washing machine can be greater than maximum (top) speed.
The present invention adjusts motor speed real-time dynamicly through the vibration acceleration of bucket outside the complete monitoring in the process of dehydration, can solve the weak point of conventional washer dehydration controlling method, makes washing machine obtain better stability and dewatering.
Dehydration control software module among the present invention in the microprocessor can be divided into data acquisition unit, computing unit and control module according to function, will specify below.
Data acquisition unit is gathered acceleration information and the current rotating speed of washing machine.The present invention can gather acceleration information in real time, and calculates the displacement of outer barrel of washing machine.Owing to be the vibration of directly measuring outer bucket, can reflect the size of the amount of unbalance in the bucket more accurately, thereby reduce the measure error of amount of unbalance.
Computing unit is used for calculating according to the acceleration information that obtains the displacement of outer barrel of washing machine.The displacement of outer bucket also can be big more when under equal conditions, rotating if the imbalance in the bucket is bigger.So for each machine,, need the maximum displacement of a permission of regulation, be called offset qualification value a here for guaranteeing machine safety.Said offset qualification value is set at different numerical in the different dehydration control stages.
Control module; Whether the displacement of judging outer barrel of washing machine surpasses the offset qualification value, when displacement does not surpass the offset qualification value, judges whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting; If do not reach; Then controlling motor-drive circuit increases rotating speed of target, if reached maximum (top) speed, then keeps current rotating speed to finish up to dehydration; When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.Can control outer barrel of washing machine vibration, prevent that washing machine from hitting bucket and can when hitting barrel, make reaction timely, thereby realize precisely control.
Regarding to control module down specifies in the control situation of different phase execution.
Above the situation of offset qualification value, explain that machine vibration is less for displacement, promptly drum inside is uneven smaller; Can continue drive motors and increase rotating speed; Therefore, when the current rotating speed of outer barrel of washing machine did not reach the maximum (top) speed of setting, control module control motor-drive circuit 3 increased the rotating speed of target of motor 4; Thereby when guaranteeing that washing machine obtains better stability, make dehydration reach maximal rate most possibly and shorten dewatering time.After this, control module judges whether to arrive the dehydration concluding time, if arrive, then finishes dehydration, otherwise continues the outer bucket rotating speed and the acceleration information of sampling current laundry machine.And reach the situation of the maximum (top) speed of setting for the current rotating speed of outer barrel of washing machine, then control module is directly carried out above-mentioned deterministic process.
When detecting displacement and surpass the offset qualification value, decide according to the current rotating speed that obtains and to end motor or will slow down.Particularly; When the current rotating speed that surpasses offset qualification value and outer barrel of washing machine in displacement surpasses the safe speed of rotation of setting; The present invention has taked the mode of slowing down and handling, and control motor-drive circuit 3 reduces the rotating speed of target of motor 4, can save the time of dehydration again like this.After the processing of slowing down, continue to start dehydration.
When the current rotating speed that surpasses offset qualification value and outer barrel of washing machine in displacement surpassed the safe speed of rotation of setting, the imbalance of this moment all can be bigger in general, and control module control motor-drive circuit 3 is ended motors 4 to protect machine.After this, control module judges also whether the dehydration number of attempt arrives maximum set point number, if, process ends, otherwise restart dehydration after increasing the dehydration number of attempt.
Traditional dehydration controlling method is after (about 90RPM) detected unbalanced situation when low speed, directly sets the dehydrating speed of a maximum.The shortcoming of handling like this is: can not reflect the uneven situation in the bucket in real time.Because in the process of dehydration, load is because of the decline of moisture content, and amount of unbalance may reduce; On the other hand, load maybe be because the reason of knotting causes amount of unbalance to increase, and traditional method then can not embody this variation, more can't control this variation.
The present invention can dynamically adjust motor speed.If find the load in the bucket because after moisture was thrown out of, imbalance had reduced, and can improve dehydrating speed step by step, makes dehydration reach the maximum (top) speed that is allowed as much as possible, can improve dewatering effectively.Otherwise, if in the process of dehydration, define uneven surpassing, can come the fastest elimination imbalance to save the time of dehydration again through deceleration control, on the other hand,, imbalance can protect machine through ending motor if existing also always.
Fig. 2 is the dehydration control flow chart of laundry machine dehydration control device of the present invention.
At step S1, begin dehydration, microprocessor 2 drive motors rotate.
At step S2, microprocessor 2 is through the current rotating speed of motor speed feedback circuit 5 sampling outer barrel of washing machine, and current rotating speed is meant washing machine actual speed at a time.Acceleration information through accelerometer 1 sampling outer barrel of washing machine.
At step S3, microprocessor 2 calculates the displacement of outer barrel of washing machine according to the acceleration information that collects.
At step S4, judge whether the displacement of outer barrel of washing machine surpasses the offset qualification value, if continue step S9, otherwise continue step S5.
At step S5, judge whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting, if not, then continue step S6, otherwise skips steps S6, directly execution in step S7.
At step S6, microprocessor 2 control motor-drive circuits increase rotating speed of target xRPM (b), and continue execution in step S7.Confirm the value added xRPM (b) of the rotating speed of target of next stage according to setting rotating speed, performed accelerator is gradual.Rotating speed of target is meant microprocessor in the regulation and control motor, the rotating speed that the hope of setting can reach, and this is a variate-value.
At step S7, microprocessor 2 also judges whether to arrive the dehydration concluding time, if, process ends, otherwise continue to begin to carry out from step S2.
At step S8, microprocessor 2 control motor-drive circuits reduce the rotating speed of target xRPM (b) of motor, jump to step S2.
At step S9, motor speed feedback circuit 5 is given microprocessor 2 with the current speed feedback of motor for washer 4, and at this moment, microprocessor 2 judges whether current rotating speed surpasses the safe speed of rotation c that sets, if, execution in step S8, otherwise jump to step S10.According to the architectural characteristic of washing machine,, need to set a safe speed of rotation c, usually between 200-350RPM for preventing rotating speed of target is set at a velocity amplitude of resonance point rotating speed.
At step S10, microprocessor 2 control motor-drive circuits are ended motor, continue execution in step S11.
At step S11, microprocessor 2 judges also whether the dehydration number of attempt arrives maximum set point number, if not, then continues step S12, if then finish dehydration.
At step S12, microprocessor 2 increases the dehydration number of attempt.
Fig. 3 is an instantiation water desorption curve sketch map of the present invention.The X axle is a time shaft, and its scale only has the demonstration meaning, does not represent actual time span; The Y axle is the rotating speed of bucket, and the implication of the RPM of its unit is rev/min.
The displacement of the outer bucket of omnidistance monitoring in real time in whole water desorption curve is in case displacement occurs above the offset qualification value a processing that just makes an immediate response.End motor if displacement below safe speed of rotation c, occurs immediately above the situation of limit value a; Otherwise inspection once more after then rotating speed of target being slowed down.Continue to exist if displacement surpasses the situation of offset qualification value a, then reduce rotating speed of target always till ending motor; Handle the back disappearance if displacement surpasses the situation of offset qualification value a at reduction of speed, then recover rotating speed of target over time.
2 curves are arranged among Fig. 3, and one of which rotating speed of target curve 6 is the perfect condition that displacement surpasses limit value a not occur, in Fig. 3, dots; 7 of another actual speed curves have been demonstrated has 2 places to have the situation after displacement surpasses limit value a, in Fig. 3, representes actual speed with solid line.Have 11 stages, corresponding different purpose of each stage and processing method.
P1: motor is from starting to about 100RPM and continuing a period of time, and this stage can detect bigger imbalance.
P2: motor is used to detect the imbalance littler than the P1 stage to about 200RPM, also continuing a period of time about 100RPM.
P3: motor is used to detect the imbalance of washing machine when resonance point from being flushed to 400RPM about 200RPM and falling after rise rapidly to the 100RPM.
P4: in again about the 100RPM detection imbalance of P3 after the stage, this stage is used to detect the distribution situation of clothing after living through the pulsatile once drying.
P5: begin to get into main water desorption curve from this stage, if the situation that displacement surpasses the offset qualification value do not occur, current rotating speed will be by regulation and control always to the rotating speed of target of setting; Otherwise will get into treatment state.The curve in main water smoking can automatically adjust according to the magnitude of vibrations of outer bucket in real time.
P6: at the rotating speed ascent stage, detect displacement, rotating speed of motor is reduced about 100RPM above after the situation of offset qualification value a.
P7: make the adjustment back of slowing down and wait for the outer stable stage of bucket.
P8: after displacement surpasses the situation disappearance of offset qualification value a, continue the rotating speed of target of motor is promoted.
P9: after reaching the maximum (top) speed of setting,, rotating speed of motor is reduced about 100RPM if detect displacement once more above after the situation of offset qualification value a.
P10: make the adjustment back of slowing down and wait for the outer stable stage of bucket.
P11: after displacement surpassed the situation disappearance of offset qualification value a, motor speed returned to the rotating speed of target of setting.
Among the present invention, whole dehydration is divided into P1 to many particular phase of P11 by rotating speed, and the effect in each stage is different.All can realize the real-time sampling accekeration and convert displacement into that the offset qualification value with this stage compares and current rotating speed is controlled then in all stages of dehydration.Certainly, the offset qualification value in each stage can be set to different numerical.In the process of carrying out water desorption curve, take different dehydration controlling methods according to the difference of current rotating speed, promptly at low-speed stage,, displacement ends dehydration this time if surpassing limit value; At high speed stage, carry out reduction of speed if displacement surpasses limit value and handle.Here said low speed is meant less than safe speed of rotation, is meant more than or equal to safe speed of rotation at a high speed.
At low-speed stage, be divided into P1 platform, P2 platform, P3 pulse, P4 platform totally 4 stages, this partial dehydration curve is relatively-stationary.And at high speed stage, from P5 to P11, this partial dehydration curve is not changeless, but can regulate based on the dehydrating speed of outer barrel of situation about vibrating and setting.Under the perfect condition, the water desorption curve of high speed stage can be from P4 end by setting the dehydrating speed that acceleration rises to setting; If displacement surpasses the offset qualification value, then reduce rotating speed; If displacement is reduced to the offset qualification value, then recovers original rotating speed, otherwise continue to reduce rotating speed.
Should be understood that; Water desorption curve as shown in Figure 3 and corresponding rotating speeds control thereof; It only is preferred implementation of the present invention; For the person of ordinary skill of the art, under the prerequisite that does not break away from the principle of the invention, just water desorption curve and corresponding control methods are made some improvement and retouching; Such as increase and decrease P1 shown in Figure 3 to each water smoking of P11, prolongation or shorten the time in each stage, the mechanism of the rotating speed of revising each stage, imitation dynamic adjustments rotating speed etc., these improvement and retouch and also should be regarded as protection scope of the present invention.
Claims (9)
1. laundry machine dehydration control method may further comprise the steps:
When the dehydration beginning, gather the acceleration information of outer barrel of washing machine;
Calculate the displacement of outer barrel of washing machine according to the acceleration information that obtains;
Whether the displacement of judging outer barrel of washing machine surpasses the offset qualification value;
When displacement does not surpass the offset qualification value; Judge whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting, if do not reach, then controlling motor-drive circuit increases rotating speed of target; If reached maximum (top) speed, then keep current rotating speed to finish up to dehydration;
When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.
2. according to the said laundry machine dehydration control method of claim 1, wherein, the control motor-drive circuit is ended the operation of motor, and is further comprising the steps of:
Judge whether the dehydration number of attempt arrives maximum set point number, if, process ends, otherwise after increasing the dehydration number of attempt, restart dehydration.
3. according to claim 1 or 2 said laundry machine dehydration control methods, wherein, said offset qualification value is set at different numerical in the different dehydration control stages.
4. laundry machine dehydration control device comprises:
Motor-drive circuit is used for drive motors;
Motor is used to drive washing machine and rotates;
Accelerometer is fixed on the outer barrel of washing machine, measures the vibration of washing machine and the acceleration information that collects is fed back to microprocessor;
The motor speed feedback circuit obtains the current rotating speed of motor for washer, and sends current rotating speed to microprocessor;
Microprocessor calculates the displacement of outer barrel of washing machine based on the acceleration information that obtains, and whether the displacement of judging outer barrel of washing machine is above the offset qualification value; When displacement does not surpass the offset qualification value; Judge whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting, if do not reach, then controlling motor-drive circuit increases rotating speed of target; If reached maximum (top) speed, then keep current rotating speed to finish up to dehydration; When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.
5. according to the said laundry machine dehydration control device of claim 4, wherein, microprocessor comprises:
Data acquisition unit is gathered acceleration information and the current rotating speed of washing machine;
Computing unit calculates the displacement of outer barrel of washing machine according to the acceleration information that obtains;
Control module; Whether the displacement of judging outer barrel of washing machine surpasses the offset qualification value, when displacement does not surpass the offset qualification value, judges whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting; If do not reach; Then controlling motor-drive circuit increases rotating speed of target, if reached maximum (top) speed, then keeps current rotating speed to finish up to dehydration; When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.
6. according to the said laundry machine dehydration control device of claim 5, wherein:
Control module is ended in the process of motor at the control motor-drive circuit, judges also whether the dehydration number of attempt arrives maximum set point number, if, process ends, otherwise after increasing the dehydration number of attempt, restart dehydration.
7. according to claim 4 or 5 or 6 said laundry machine dehydration control device, wherein, said offset qualification value is set at different numerical in the different dehydration control stages.
8. one kind is used for the microprocessor that laundry machine dehydration is controlled, and comprising:
Data acquisition unit, the acceleration information and the current rotating speed of washing machine of collection outer barrel of washing machine;
Computing unit calculates the displacement of outer barrel of washing machine according to the acceleration information that obtains;
Control module; Whether the displacement of judging outer barrel of washing machine surpasses the offset qualification value, when displacement does not surpass the offset qualification value, judges whether the current rotating speed of outer barrel of washing machine reaches the maximum (top) speed of setting; If do not reach; Then controlling motor-drive circuit increases rotating speed of target, if reached maximum (top) speed, then keeps current rotating speed to finish up to dehydration; When displacement surpasses the offset qualification value, judge whether current rotating speed surpasses the safe speed of rotation of setting, if do not surpass the safe speed of rotation of setting, the control motor-drive circuit is ended motor; If surpass the safe speed of rotation of setting, the control motor-drive circuit reduces rotating speed of target and continues dehydration.
9. the said according to Claim 8 microprocessor that is used for laundry machine dehydration control, wherein:
Control module is ended in the process of motor at the control motor-drive circuit, judges also whether the dehydration number of attempt arrives maximum set point number, if, process ends, otherwise restart dehydration after increasing the dehydration number of attempt.
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| CN2010101185312A CN102191660B (en) | 2010-03-05 | 2010-03-05 | Method and device for controlling dehydration of washing machine |
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| CN2010101185312A CN102191660B (en) | 2010-03-05 | 2010-03-05 | Method and device for controlling dehydration of washing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104532511B (en) * | 2014-12-22 | 2016-08-24 | 惠而浦（中国）股份有限公司 | Dehydration method of drum washing machine based on three-dimensional vibration sensing technology |
| CN106436146B (en) * | 2015-08-05 | 2021-03-30 | 青岛胶南海尔洗衣机有限公司 | Washing machine dehydration control method and washing machine |
| CN106676818B (en) * | 2015-11-09 | 2021-03-19 | 无锡小天鹅电器有限公司 | Detection method and system for dewatering barrel of pulsator washing machine |
| CN107558096A (en) * | 2016-06-30 | 2018-01-09 | 无锡小天鹅股份有限公司 | Washing machine and its control device and control method |
| CN106319861A (en) * | 2016-09-12 | 2017-01-11 | 广东威灵电机制造有限公司 | Washing machine and driving device of washing machine |
| CN108221301B (en) * | 2018-03-29 | 2020-12-08 | 无锡小天鹅电器有限公司 | Dewatering method, dewatering device and clothes processing device |
| CN109629176B (en) * | 2018-12-11 | 2022-12-06 | 佛山市顺德海尔电器有限公司 | Dewatering rotating speed control method of washing equipment |
| CN112144229B (en) * | 2019-06-28 | 2023-08-25 | 青岛海尔洗涤电器有限公司 | Dehydration vibration detection method of drum washing machine and drum washing machine |
| CN111041770A (en) * | 2019-12-05 | 2020-04-21 | 无锡飞翎电子有限公司 | Clothes treatment equipment, control method and device thereof, and readable storage medium |
| CN113046999B (en) * | 2019-12-26 | 2024-06-18 | 青岛海尔洗衣机有限公司 | Washing apparatus and dehydration method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20060061319A (en) * | 2006-04-19 | 2006-06-07 | 엘지전자 주식회사 | Method for detecting amount of the washing in washer |
| CN101195954A (en) * | 2006-12-08 | 2008-06-11 | 松下电器产业株式会社 | Washing machine |
| JP2009028421A (en) * | 2007-07-30 | 2009-02-12 | Toshiba Corp | Drum type washing machine |
| CN101796238A (en) * | 2007-09-04 | 2010-08-04 | 松下电器产业株式会社 | Washing machine, and method and program for controlling drum rotation speed |
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