CN1924154A - Unbalance detection method and washing machine using the same - Google Patents
Unbalance detection method and washing machine using the same Download PDFInfo
- Publication number
- CN1924154A CN1924154A CNA2006100678369A CN200610067836A CN1924154A CN 1924154 A CN1924154 A CN 1924154A CN A2006100678369 A CNA2006100678369 A CN A2006100678369A CN 200610067836 A CN200610067836 A CN 200610067836A CN 1924154 A CN1924154 A CN 1924154A
- Authority
- CN
- China
- Prior art keywords
- motor
- uneven
- velocity
- cylinder
- washing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/16—Imbalance
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/24—Spin speed; Drum movements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/26—Unbalance; Noise level
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
Abstract
A washing machine and unbalance detection method using the same, which is capable of efficiently detecting unbalance of a rotation tub. A washing machine includes: a washing motor rotating a rotation tub accommodating laundry; a motor velocity detection unit detecting a velocity of the washing motor and outputting a motor velocity signal; and a controller determining whether unbalance of the rotation tub occurs according to an unbalance level determined on the basis of a velocity ripple of the motor velocity signal, and controlling the washing motor according to the determination result. A method of detecting unbalance of a rotation tub accommodating the laundry in a washing machine includes: driving a washing motor in order to rotate the rotation tub; detecting a velocity of the washing motor, and outputting a motor velocity signal; extracting a velocity ripple of the motor velocity signal, the velocity ripple being generated while detecting the velocity of the washing motor; operating the extracted velocity ripple, and detecting an unbalance level; and comparing the detected unbalance level with a reference value, and determining whether the unbalance of the rotation tub occurs.
Description
Technical field
The washing machine that the present invention relates to detect the unbalanced unbalance detection of cylinder (rotation tub) effectively and utilize this method.
Background technology
Washing machine comprises the laundry motor, is used to rotate the cylinder of accommodating laundry.In addition, washing machine comprises controller, is used to control the revolution of laundry motor, and wherein said controller is controlled a series of laundry operations, for example cleaning, rinsing and rotation drying etc.
Fig. 1 a has shown the non-equilibrium state the when clothing in its intermediate roll accumulates in a side, and Fig. 1 b has shown the poised state the when clothing in its intermediate roll is evenly placed.
When utilizing when rotating the dehydrate clothing of generation rapidly by cylinder, under the non-equilibrium state of the side that clothing as shown in Figure 1 gathers, cylinder exceedingly rocks, thereby produces noise.In order to suppress generating noise, preferably carry out spin-drying operation under the poised state that the clothing in cylinder shown in Fig. 1 b is evenly placed.
Except the noise owing to uneven generation, also the problem of Cun Zaiing is to dry efficient reduction and clothing generation fold, therefore need solve the unbalanced problem that detect when spin-drying operation begins.
Simultaneously, traditional unbalance detection detects uneven based on the velocity variations of motor.
Because the speed of motor changes immediately, be difficult to detect the velocity variations degree of motor.Therefore, traditional unbalance detection detects the motor speed intensity of variation to detect imbalance under the state that the speed of motor is maintained in the preset time section.
Fig. 2 is the motor speed curve that traditional unbalance detection has been described.
More specifically, as shown in the figure, traditional unbalance detection increases angular speed, and carries out attach operation (clinging operation), makes clothing attached to the cylinder inboard.Subsequently, traditional unbalance detection keeps constant angular speed in uneven detection time in the section, detects the motor speed variable quantity, and determines whether to take place uneven according to the amount of unbalance based on detected motor speed change operation.
Fig. 3 has shown actual speed, calculating average speed and the actual average speed of motor in uneven sense cycle.
Under the situation that motor speed is lower in imbalance section process detection time, the clothing in the cylinder moves.Owing to this reason, it is constant that the actual speed by the detected motor of velocity sensor keeps, and change as the solid line among Fig. 3.In addition, with respect to the actual average speed of motor speed such as the dotted lines among Fig. 3.But the average speed that on average calculates by the motor speed that will detect is constant, represents as the chain-dotted line among Fig. 3.Therefore, the velocity variations of motor is to obtain according to the calculated average speed different with actual average speed, thereby uneven error in judgement can take place.
When the motor speed that is applied to uneven sense cycle is higher, keep the constant clothing that makes simultaneously attached to the cylinder inboard by average speed with motor, can guarantee the uneven reliability of judging.If but detect excessive imbalance, just must carry out attach operation again returning poised state, thereby increase the overall drying time.
Summary of the invention
Therefore, one aspect of the present invention provides a kind of washing machine, it is by obtaining owing to the uneven velocity perturbation component (velocity ripple component) that produces and judging whether to have taken place imbalance according to motor velocity signal, can increase the uneven reliability of judging, and a kind of unbalance detection that utilizes this washing machine is provided.
Another aspect of the present invention provides a kind of washing machine, it is by judging whether to have taken place imbalance in real time when driving the laundry motor at a predetermined velocity, can reduce the overall spin-drying operation time, and a kind of unbalance detection that utilizes this washing machine is provided.
According to an aspect of the present invention, provide a kind of washing machine, having comprised: laundry motor, the cylinder of its rotation accommodating laundry; The motor speed detecting unit, it detects the speed and the output motor rate signal of laundry motor; And controller, it is according to based on the velocity perturbation of motor velocity signal and definite uneven grade judges whether cylinder imbalance takes place, and according to judged result control laundry motor.
Described controller can judge in real time whether cylinder imbalance takes place when driving the laundry motor.
Whether described controller can imbalance take place at laundry motor speed situation about the changing cylinder that judge.
Described controller can keep the constant situation cylinder that judges whether imbalance takes place at the laundry motor speed.
Described controller also comprises high-pass filter, is used to detect described velocity perturbation.
Described high-pass filter can have 1/4 the cut-off frequency that is no more than the cylinder angle.
Described controller can comprise: low pass filter is used to filter other components that produce according to the mechanical property outside the unbalanced component; And the signed magnitude arithmetic(al) unit, be used for detecting uneven grade according to described unbalanced component.
Described controller can also comprise uneven judging unit, is used for the uneven grade of filtering by low pass filter is compared with reference grade, and is used to judge whether take place uneven.
According to another aspect of the present invention, provide a kind of unbalanced method that detects the cylinder of accommodating laundry in the washing machine, described method comprises: drive the laundry motor, with swing roller; Detect the speed of laundry motor, and the output motor rate signal; Obtain the velocity perturbation of motor velocity signal, described velocity perturbation produces in laundry motor speed testing process; Detect uneven grade based on the velocity perturbation of obtaining; The uneven grade that detects is compared with a reference value, and judge whether cylinder imbalance takes place.
The described step of obtaining velocity perturbation can utilize the high-pass filter with predetermined cut-off frequency to carry out.
The step of the uneven grade of described detection can comprise the absolute value of computational speed fluctuation, and utilizes low pass filter filtration other components except the unbalanced component of signed magnitude arithmetic(al) signal, and wherein said other components are produced by mechanical property.
If result's judgement state is designated as poised state, then cylinder rotates rapidly, and carries out actual spin-drying operation.
Judge that the step of uneven grade can carry out simultaneously with attach operation, described attach operation makes clothing attached to the cylinder inboard.
Of the present invention in addition and/or other aspects and naming a person for a particular job partly be elaborated in the following description, part is conspicuous from explanation, perhaps can obtain understanding by real-time the present invention.
Description of drawings
From below in conjunction with the description of accompanying drawing to example, above-mentioned and/or other aspects of the present invention and advantage will become obviously, wherein in the accompanying drawings:
Fig. 1 has shown that the clothing in its intermediate roll accumulates in the non-equilibrium state of a side, and Fig. 1 b has shown the poised state that the clothing in its intermediate roll is evenly placed;
Fig. 2 is the motor speed curve of the traditional unbalance detection of explanation;
Fig. 3 has shown the actual speed of motor in uneven sense cycle, the average speed that calculates and actual average speed;
Fig. 4 is the schematic block diagram according to the washing machine structure of the embodiment of the invention;
Fig. 5 is the detailed diagram of the structure of Fig. 4 middle controller; And
Fig. 6 is each motor velocity signal that detects by the motor speed detecting unit according under the non-equilibrium state of the embodiment of the invention and the poised state;
Fig. 7 is each velocity perturbation that detects by the velocity perturbation detecting unit according under the non-equilibrium state of the embodiment of the invention and the poised state;
Fig. 8 is according to each signal by the signed magnitude arithmetic(al) unitary operation under the non-equilibrium state of the embodiment of the invention and the poised state;
Fig. 9 is each the uneven level signal that detects by uneven grade detecting unit according under the non-equilibrium state of the embodiment of the invention and the poised state;
Figure 10 is the flow chart according to the unbalance detection of the embodiment of the invention.
The specific embodiment
With reference to the example in detail embodiments of the invention that are illustrated in the drawings, wherein similar Reference numeral is represented similar elements in the text below.Explanation to embodiment is intended to reference to description of drawings the present invention below.
Fig. 4 is the schematic block diagram according to the washing machine structure of the embodiment of the invention.More specifically, Fig. 4 has shown and has been used to drive the structure of laundry motor with the washing machine that carries out spin-drying operation.But in order to clean and rinsing and spin-drying operation, unshowned parts also can adopt among Fig. 4.
As shown in the figure, comprise according to the washing machine of the embodiment of the invention: input block 10, this input block make the user can the input operation order, and described operational order comprises the order that is used to be provided with spin-drying operation; Controller 20, this controller is used to control the integrated operation of washing machine; Motor driver 30, it is used for driving laundry motor 40 under the control of controller 20; With motor speed detecting unit 50, it is used for providing motor velocity signal to controller 20, and wherein said motor velocity signal is corresponding to the angular speed of laundry motor 40.Herein, motor speed detecting unit 50 is embodied in and uses Hall element or encoder.
Fig. 5 is the detailed diagram of the structure of Fig. 4 middle controller.
As shown in the figure, unit 21, signed magnitude arithmetic(al) unit 22, uneven grade detecting unit 23, uneven judging unit 24 and motor control unit 25 are asked in the fluctuation of controller 20 control rates.
When carrying out spin-drying operation after cleaning and rinsing clothes, the laundry motor 40 among Fig. 4 at first is actuated to carry out attach operation, so that clothing is attached to the cylinder inboard.Herein, the clothing in the cylinder is set at the non-equilibrium state shown in Fig. 1 a usually.If the rotary speed of washing machine 40 is low, then clothing will move in cylinder.
Fig. 6 is each motor velocity signal that detects by the motor speed detecting unit according under the non-equilibrium state of the embodiment of the invention and the poised state.
As shown in the figure, when the laundry motor 40 velocity variations the time, velocity perturbation is asked for unit 21 and is obtained velocity perturbation (Y2) from motor velocity signal (Y1), motor velocity signal (Y1) provides by motor speed detecting unit 50.Unit 21 is asked in velocity perturbation can use high-pass filter (HPF) or bandpass filter (BFP).According to embodiments of the invention, unit 21 is asked in velocity perturbation can utilize the high-pass filter (HPF) with predetermined cut-off frequency (Fcutoff-H), and wherein cut-off frequency (Fcutoff-H) is set to be no more than 1/4 value of drum speed.
Fig. 7 is each velocity perturbation that detects by the velocity perturbation detecting unit according under the non-equilibrium state of the embodiment of the invention and the poised state.
As shown in the figure, by velocity perturbation ask for unit 21 provide to the velocity perturbation (Y2) of signed magnitude arithmetic(al) unit 22 are waveform signals of wherein having removed direct current (DC) component.
Fig. 8 is according to each signal by the signed magnitude arithmetic(al) unitary operation under the non-equilibrium state of the embodiment of the invention and the poised state.
As shown in the figure, signed magnitude arithmetic(al) unit 22 carries out the velocity perturbation of obtaining (Y2) square, i.e. Y2*Y2, and will provide to uneven grade detecting unit 23 greater than 0 waveform signal (Y3).
Fig. 9 is each the uneven level signal that detects by uneven grade detecting unit according under the non-equilibrium state of the embodiment of the invention and the poised state.
As shown in the figure, uneven grade detecting unit 23 is removed owing to other components outside the uneven component of signal that produces, and to uneven judging unit 24 output uneven grades (Y4).Herein, other representation in components are by the component of mechanical property (for example being used for the power of motor is transferred to the belt and the belt pulley of cylinder) generation.Described uneven grade detecting unit 23 can be the low pass filter (LPF) with preset frequency (Fcutoff-L).
Consider the frequency change influence of laundry motor and provide the output that provides by uneven grade detecting unit 23 uneven grade (Y4) in real time.
Uneven grade detecting unit 23 compares the uneven grade (Y4) that is provided with pre-determined reference value, and judges whether to take place uneven.For example, when uneven grade (Y4) was 0, uneven grade detecting unit 23 thought that result's judgement state is the poised state that the clothing in its intermediate roll is evenly arranged, and to the corresponding uneven signal of judging of motor control unit 25 outputs.Therefore, motor control unit 25 drives signal to motor driver 30 output motors, and rapid swing roller is mainly to carry out spin-drying operation.
According to embodiments of the invention,, therefore can judge imbalance in real time when driving the laundry motor because uneven grade is to detect according to motor velocity signal.In addition, by obtaining velocity perturbation according to motor velocity signal and judging whether imbalance takes place, can accurately judge whether to take place uneven based on the velocity perturbation of obtaining.
In addition, according to embodiments of the invention,, by the computing absolute value and use low pass filter to carry out filtering, can prevent because the uneven error in judgement that mechanical property is brought for velocity perturbation.
In addition, according to embodiments of the invention, by when motor speed changes, carrying out attach operation, and by side by side judging whether to take place imbalance, if judging result's judgement state is poised state, motor control unit mainly to carry out spin-drying operation, therefore can reduce the overall drying time with regard to rapid swing roller.
Now with reference to the unbalance detection of accompanying drawing 4 to 10 detailed descriptions according to the embodiment of the invention.To be appreciated that simultaneously with reference to the method among accompanying drawing 4 explanation Figure 10 only be convenience in order illustrating, can also to adopt the device different to carry out described method with Fig. 4 structure.
Figure 10 is the flow chart according to the unbalance detection of the embodiment of the invention.
At first, controller 20 clean with rinsing after drying pattern (101) is set.
Then, motor control unit 25 is controlled motor drivers 30, and drives the driving operation (103) of the laundry motor 40 that has stopped.
When driving laundry motor 40, motor speed detecting unit 50 detects the speed of motor, and to controller 20 output motor rate signals (Y1) (103).
The velocity perturbation of controller 20 is asked for unit 21 and is obtained velocity perturbation (Y2) (107) with high-frequency from motor velocity signal (Y1).Promptly, in order to obtain velocity perturbation (Y2), unit 21 is asked in velocity perturbation makes motor velocity signal (Y1) by having the high-pass filter of predetermined cut-off frequency (Fcutoff-H), described cut-off frequency (Fcutoff-H) be set to be no more than cylinder angular speed (Ftub) 1/4, and velocity perturbation (Y2) provided to signed magnitude arithmetic(al) unit 22, wherein by high-pass filter the time, remove the DC component in the velocity perturbation (Y2).
The 22 pairs of velocity perturbations of obtaining in signed magnitude arithmetic(al) unit (Y2) are carried out square, i.e. Y2*Y2, thus overall signal has the value greater than 0, and signed magnitude arithmetic(al) signal (Y3) is provided to uneven grade detecting unit 23 (109).
To produce component and remove other components in order to keep owing to uneven, the low pass filter (LPF) of signal (Y3) that provides by uneven grade detecting unit 23 by having preset frequency (Fcutoff-L), and transfer to uneven judging unit 24, wherein by low pass filter (LPF) time, filter uneven grade (111).
Uneven grade and pre-determined reference value that uneven detecting unit 24 will provide compare, judge whether to take place uneven, and imbalance judged that signal provides to motor control unit 25, wherein unevenly judge that signal is the signal (113) that is used for controlling according to uneven judged result the laundry motor.
When motor control unit 25 received the imbalance judgement signal of expression poised state, motor control unit 25 rapid swing rollers were mainly to carry out spin-drying operation (115).
Above-mentioned unbalance detection according to present embodiment of the present invention can be applied in the state that motor speed changes, and wherein said method is obtained velocity perturbation according to motor velocity signal, and judges whether to take place uneven based on the velocity perturbation of obtaining.But above-mentioned unbalance detection can be applied to the constant state of motor speed maintenance too to judge whether to take place imbalance.
That is, present embodiment of the present invention can judge whether to take place uneven by carrying out attach operation when motor speed changes.In addition, when attach operation finished, the present invention can the service speed fluctuation judges whether to take place uneven under the constant state by keeping at motor speed.
From foregoing description obviously as can be known, the above embodiment of the present invention provides a kind of washing machine and has utilized the unbalance detection of this washing machine, wherein, owing to when driving the laundry motor, detect uneven grade, therefore can judge imbalance in real time according to motor velocity signal.In addition, by obtaining velocity perturbation from motor velocity signal and judging whether imbalance takes place, can accurately judge whether to take place uneven based on the velocity perturbation of obtaining.
In addition, according to the abovementioned embodiments of the present invention,, by the described absolute value of computing and utilize low pass filter to filter, can prevent because the uneven error in judgement that mechanical property produces for velocity perturbation.
In addition, according to the abovementioned embodiments of the present invention, by in the speed that changes motor, carrying out attach operation, and by judging whether to take place imbalance simultaneously, if judging result's judgement state is poised state, motor control unit mainly to carry out spin-drying operation, therefore can reduce the whole drying time with regard to rapid swing roller.
Although understand embodiments of the invention, but the present invention is not limited to the foregoing description.In fact, under the prerequisite that does not deviate from the application's principle and essence, those of ordinary skills can change the foregoing description, and protection scope of the present invention is by claims and equivalent limit thereof.
Claims (15)
1. washing machine comprises:
The laundry motor, the cylinder of described laundry motor rotation accommodating laundry;
The motor speed detecting unit, described motor speed detecting unit detects the speed and the output motor rate signal of laundry motor; With
Controller, described controller be according to based on the velocity perturbation of motor velocity signal and definite uneven grade judges whether cylinder imbalance takes place, and according to described judged result control laundry motor.
2. washing machine according to claim 1, wherein said controller judges in real time whether cylinder imbalance takes place when driving the laundry motor.
3. washing machine according to claim 1, wherein said controller judges whether cylinder imbalance takes place when the laundry motor speed changes.
4. washing machine according to claim 1, wherein said controller judges whether cylinder imbalance takes place when the laundry motor speed keeps constant.
5. washing machine according to claim 1, wherein said controller comprises the high-pass filter that is used to detect described velocity perturbation.
6. washing machine according to claim 5, wherein said high-pass filter have 1/4 the cut-off frequency that is no more than the cylinder angle.
7. washing machine according to claim 1, wherein said controller comprises:
Low pass filter, described low pass filter are used to filter other components that produce according to the mechanical property outside the unbalanced component; And
The signed magnitude arithmetic(al) unit, described signed magnitude arithmetic(al) unit is used for detecting uneven grade according to described unbalanced component.
8. washing machine according to claim 7, wherein said controller also comprises uneven judging unit, described uneven judging unit is used for the uneven grade of filtering by low pass filter is compared with reference grade, and is used to judge whether take place uneven.
9. unbalanced method that detects the cylinder of accommodating laundry in the washing machine, described method comprises:
Drive the laundry motor, with swing roller;
Detect the speed of laundry motor, and the output motor rate signal;
Obtain the velocity perturbation of motor velocity signal, described velocity perturbation produces in laundry motor speed testing process;
Detect uneven grade based on the velocity perturbation of obtaining; With
The uneven grade that detects is compared with a reference value, and judge whether cylinder imbalance takes place.
10. method according to claim 9, the wherein said step of obtaining velocity perturbation are to utilize the high-pass filter with predetermined cut-off frequency to carry out.
11. method according to claim 9, the step of the uneven grade of wherein said detection comprises the absolute value of computational speed fluctuation, and utilize low pass filter filtration other components except the unbalanced component of signed magnitude arithmetic(al) signal, wherein said other components are produced by mechanical property.
12. method according to claim 9, if wherein result's judgement state is designated as poised state, then cylinder rotates rapidly, and carries out actual spin-drying operation.
13. method according to claim 9 judges that wherein the step of uneven grade can be carried out simultaneously with attach operation, described attach operation makes clothing attached to the cylinder inboard.
14. a time method that reduces the spin-drying operation that dries clothing, described method comprises:
Detect first speed of the inner core electric rotating machine of rotation inner core, and the output motor rate signal;
Obtain the velocity perturbation of motor velocity signal, described velocity perturbation produces in laundry motor speed testing process;
Determine the absolute value of the velocity perturbation obtained;
Absolute value according to the velocity perturbation of obtaining detects uneven grade;
The uneven grade that detects is compared with a reference value, and judge that when the uneven grade that detects is less than or equal to reference grade imbalance does not take place cylinder;
When imbalance does not take place in cylinder to be higher than the second speed swing roller of first speed.
15. method according to claim 14 wherein also comprises when cylinder and taking place when uneven with the first speed swing roller, wherein said comparison step also comprises when uneven grade when described detection is greater than reference grade determines that imbalance takes place cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20050080800 | 2005-08-31 | ||
| KR1020050080800A KR20070025056A (en) | 2005-08-31 | 2005-08-31 | Washing machine and unbalance detection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1924154A true CN1924154A (en) | 2007-03-07 |
Family
ID=37308869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100678369A Pending CN1924154A (en) | 2005-08-31 | 2006-03-14 | Unbalance detection method and washing machine using the same |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20070044247A1 (en) |
| EP (1) | EP1760182A3 (en) |
| KR (1) | KR20070025056A (en) |
| CN (1) | CN1924154A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466538A (en) * | 2011-03-14 | 2012-05-23 | 无锡艾柯威科技有限公司 | Method for detecting load imbalance of variable frequency motor |
| CN105063955A (en) * | 2015-08-05 | 2015-11-18 | 无锡小天鹅股份有限公司 | Control method and device of washing machine |
| CN107099973A (en) * | 2017-05-31 | 2017-08-29 | 广东威灵电机制造有限公司 | Unbalance detection, washing machine and the storage medium of washing machine drum body |
| CN107130393A (en) * | 2017-05-31 | 2017-09-05 | 广东威灵电机制造有限公司 | Roller washing machine and its control method, device and machinable medium |
| CN110409122A (en) * | 2018-04-30 | 2019-11-05 | 大宇电子株式会社 | Washing machine and its unbalance detection |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8695381B2 (en) * | 2008-03-28 | 2014-04-15 | Electrolux Home Products, Inc. | Laundering device vibration control |
| US8499392B2 (en) * | 2010-01-29 | 2013-08-06 | General Electric Company | Apparatus and method for detecting unbalanced loads in a washing machine |
| US8932369B2 (en) | 2010-04-13 | 2015-01-13 | Whirlpool Corporation | Method and apparatus for determining an unbalance condition in a laundry treating appliance |
| US8689641B2 (en) | 2012-07-17 | 2014-04-08 | Whirlpool Corporation | Detecting satellization of a laundry load |
| KR102527576B1 (en) * | 2016-10-07 | 2023-04-28 | 엘지전자 주식회사 | Washing machine and method for controlling washing machine |
| KR102596976B1 (en) * | 2018-11-30 | 2023-11-02 | 삼성전자주식회사 | Washing machine and method for controlling the same |
| CN113389011A (en) * | 2020-03-12 | 2021-09-14 | 青岛海尔洗衣机有限公司 | Washing machine tub collision detection method, device and system and washing machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0732436B1 (en) * | 1995-03-11 | 1999-12-08 | Whirlpool Europe B.V. | Method and arrangement for achieving load balance in washing machines |
| KR100274470B1 (en) * | 1997-05-20 | 2000-12-15 | 구자홍 | A method of detecting eccentricity in washing machine and control apparatus thereof |
| KR100314179B1 (en) * | 1999-03-26 | 2001-11-15 | 윤종용 | unbalance sensing apparatus of a washing machice and method thereof |
| US6578225B2 (en) * | 2000-05-25 | 2003-06-17 | Skf Autobalance Systems Ab | Low-speed prebalancing for washing machines |
| US6507799B2 (en) * | 2001-02-26 | 2003-01-14 | Honeywell International Inc. | Method and apparatus for reducing microprocessor speed requirements in data acquisition applications |
| US7905122B2 (en) * | 2003-04-28 | 2011-03-15 | Nidec Motor Corporation | Method and system for determining a washing machine load unbalance |
| US7331075B2 (en) * | 2003-08-07 | 2008-02-19 | Lg Electronics Inc. | Spin-dry control method in washing machine |
-
2005
- 2005-08-31 KR KR1020050080800A patent/KR20070025056A/en not_active Application Discontinuation
-
2006
- 2006-02-24 US US11/360,612 patent/US20070044247A1/en not_active Abandoned
- 2006-03-06 EP EP06004501A patent/EP1760182A3/en not_active Withdrawn
- 2006-03-14 CN CNA2006100678369A patent/CN1924154A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466538A (en) * | 2011-03-14 | 2012-05-23 | 无锡艾柯威科技有限公司 | Method for detecting load imbalance of variable frequency motor |
| CN105063955A (en) * | 2015-08-05 | 2015-11-18 | 无锡小天鹅股份有限公司 | Control method and device of washing machine |
| CN105063955B (en) * | 2015-08-05 | 2018-01-16 | 无锡小天鹅股份有限公司 | The control method and device of washing machine |
| CN107099973A (en) * | 2017-05-31 | 2017-08-29 | 广东威灵电机制造有限公司 | Unbalance detection, washing machine and the storage medium of washing machine drum body |
| CN107130393A (en) * | 2017-05-31 | 2017-09-05 | 广东威灵电机制造有限公司 | Roller washing machine and its control method, device and machinable medium |
| CN110409122A (en) * | 2018-04-30 | 2019-11-05 | 大宇电子株式会社 | Washing machine and its unbalance detection |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1760182A2 (en) | 2007-03-07 |
| EP1760182A3 (en) | 2009-05-13 |
| KR20070025056A (en) | 2007-03-08 |
| US20070044247A1 (en) | 2007-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1924154A (en) | Unbalance detection method and washing machine using the same | |
| CN1273812C (en) | Detecting method and detector for detecting load disequilibrium of equipment | |
| CN1203226C (en) | Device and method for measuring clothes weight in washing machine | |
| CN1916266A (en) | Method of detecting an off-balance condition of a clothes load in a washing machine | |
| CN1821477A (en) | Drum type washing machine and method of detecting laundry weight thereof | |
| US20060112496A1 (en) | Method for controlling spin-drying process with diagonal unbalance considered in spin-dryer or washing machine, and spin-dryer or washing machine controlling spin-drying process with the same | |
| CN1590629A (en) | Method for sensing amount of laundry of washing machine | |
| CN1180115A (en) | Centrifugal dewatering device | |
| EP2000576A3 (en) | Washing machine and method of controlling the same | |
| EP0969133A1 (en) | A method of detecting imbalance in a drum of a washing machine | |
| CN101052761A (en) | Method of cleaning drum of washing machine | |
| US7752694B2 (en) | Dehydration controlling apparatus for washing machine and method thereof | |
| EP1538251A3 (en) | Washing machine and control method thereof | |
| CN1136349C (en) | Washer | |
| CN1924160A (en) | Dehydration rotary speed controlling device for washing machine and controlling method thereof | |
| WO2016090816A1 (en) | Roller washing machine and spin-drying method thereof | |
| CN1449106A (en) | Control equipment of brushless motor and washing machine with the same equipment | |
| CN1517474A (en) | Method for controlling drive of drum washing machine and its device | |
| CN1721612A (en) | Method for calibrating current offset and filtering bad data in a system that detects power output | |
| RU2008148162A (en) | METHOD FOR REMOVING FOAM IN A WASHING DRUM TYPE MACHINE AND A WASHING MACHINE FOR CARRYING OUT THE METHOD | |
| CN1916267A (en) | Washing machine | |
| KR20070048918A (en) | Washing machine and its unbalance detection method | |
| CN103046287B (en) | Water level setting method and system of roller washing machine | |
| CN1888290A (en) | Method for controlling automatic drying washing machine | |
| CN1884664A (en) | Drum washing machine and method of controlling the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |