CN105155206A - Roller washing machine and imbalance detection method and device for same - Google Patents
Roller washing machine and imbalance detection method and device for same Download PDFInfo
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- CN105155206A CN105155206A CN201510468361.3A CN201510468361A CN105155206A CN 105155206 A CN105155206 A CN 105155206A CN 201510468361 A CN201510468361 A CN 201510468361A CN 105155206 A CN105155206 A CN 105155206A
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- 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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
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Abstract
The invention belongs to the technical field of washing machine detection control and provides a roller washing machine and an imbalance detection method and device for the same. When a roller rotates at constant low speed, roller rotating speed is detected and a first rotating speed fluctuating value is acquired; then when the roller constantly accelerates, a second rotating speed fluctuating value of the roller is acquired; a differential value between the first and second rotating speed fluctuating values is determined whether to be larger than a preset imbalance valve value; if the differential value is larger than the imbalance valve value, the roller is determined to be at a dynamic imbalance state; and otherwise, the roller is not at the dynamic imbalance state. Imbalance detection by a sensor can be avoided by the use of the detection method and device, so cost and detection difficulty can be reduced; and damages due to mechanical component crashes during dynamic imbalance detection upon high speed rotation of the roller can be avoided.
Description
Technical field
The invention belongs to washing machine detection control technical field, particularly relate to roller washing machine and unbalance detection thereof and device.
Background technology
In roller washing machine, when the cylinder that variable-frequency motor drives is uneven, the rotating speed of variable-frequency motor is higher, then the vibration & noise of system will be larger, thus can reduce the service life of roller washing machine.Variable-frequency motor has laod unbalance measuring ability, when finding that load (as cylinder) is uneven, by adjusting rotating speed or changing the non-equilibrium state of load, to reach the object of the vibration & noise of reduction system.
Prior art provides following two kinds of unbalance detections:
(1) whether by adopting sensor to balance cylinder and detect, but the cost of sensor is higher and be not easy to install, thus causes detection difficulty large.
(2) by judging whether cylinder balances in low cruise stage and high-speed cruising stage according to the rotating speed of variable-frequency motor or torque; But, this method is carried out cannot realizing dynamic unbalance when static unbalance detects in the low-speed running stage (motor travels at the uniform speed according to fixing rotary speed) to cylinder is simultaneously detected, and run up in the stage of running up due to cylinder, in the process of running up, carry out dynamic unbalance detection the mechanical part of washing machine internal can be made to collide and cause washing machine to be damaged.
In sum, prior art exists that cost is high, detection difficulty is large, cannot carry out dynamic unbalance detection to cylinder in the low cruise stage and carry out dynamic unbalance in the high-speed cruising stage detecting and easily making the mechanical part of washing machine internal occur the problem of impaction lesion.
Summary of the invention
The object of the present invention is to provide a kind of roller washing machine and unbalance detection thereof and device, be intended to solve that cost existing for prior art is high, detection difficulty large, dynamic unbalance detection cannot be carried out to cylinder in the low-speed running stage and carry out dynamic unbalance in the stage of running up detecting and easily making the mechanical part of washing machine internal occur the problem of impaction lesion.
The present invention is achieved in that a kind of roller washing machine unbalance detection, and described roller washing machine unbalance detection comprises the following steps:
A. when cylinder at the uniform velocity operates, the rotating speed of described cylinder detected and obtain the first fluctuation of speed value;
B. carry out in the process of accelerated service at described cylinder according to constant acceleration, the second fluctuation of speed value of cylinder described in Real-time Obtaining;
C. judge whether the difference of described first fluctuation of speed value and described second fluctuation of speed value is greater than default uneven threshold values, if described difference is greater than described default uneven threshold values, then judge that dynamic unbalance appears in described cylinder, otherwise judge that dynamic unbalance does not appear in described cylinder.
Present invention also offers the uneven checkout gear of a kind of roller washing machine, the uneven checkout gear of described roller washing machine comprises:
First fluctuation of speed acquisition module, the second fluctuation of speed acquisition module and dynamic unbalance judge module;
Described first fluctuation of speed acquisition module is used for detecting the rotating speed of described cylinder when cylinder at the uniform velocity operates and obtaining the first fluctuation of speed value;
Described second fluctuation of speed acquisition module is used for carrying out in the process of accelerated service at described cylinder according to constant acceleration, the second fluctuation of speed value of cylinder described in Real-time Obtaining;
Described dynamic unbalance judge module judges whether the difference of described first fluctuation of speed value and described second fluctuation of speed value is greater than default uneven threshold values, if described difference is greater than described uneven threshold values, then judge that dynamic unbalance appears in described cylinder, otherwise judge that dynamic unbalance does not appear in described cylinder.
Present invention also offers a kind of roller washing machine, it comprises cylinder and the uneven checkout gear of above-mentioned roller washing machine.
Roller washing machine is being carried out in the uneven process detected, the present invention is when cylinder at the uniform velocity operates according to low speed, the rotating speed of cylinder is detected and obtains the first fluctuation of speed value, then when cylinder carries out accelerated service according to constant acceleration, second fluctuation of speed value of Real-time Obtaining cylinder, and judge whether cylinder occurs dynamic unbalance according to described first fluctuation of speed value and this second fluctuation of speed value, if, then index drum stops accelerated service, and judge whether the executed number of operations that shakes loose of cylinder is greater than preset times value, be, then index drum shuts down, no, then index drum performs and shakes loose operation and carry out low-speed running subsequently, and when cylinder low-speed running, static unbalance detection is carried out to it, detect without the need to adopting sensor to carry out imbalance in the process, reduce cost and detection difficulty, and dynamic unbalance detection can be carried out when cylinder low-speed running and accelerated service, avoid and carry out dynamic unbalance detection when cylinder runs up and cause mechanical part to occur the problem of impaction lesion.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the roller washing machine unbalance detection that the embodiment of the present invention provides;
Fig. 2 is another realization flow figure of the roller washing machine unbalance detection that the embodiment of the present invention provides;
Fig. 3 is another realization flow figure of the roller washing machine unbalance detection that the embodiment of the present invention provides;
Fig. 4 is the Parameters variation oscillogram involved by roller washing machine unbalance detection that the embodiment of the present invention provides;
Fig. 5 is the Parameters variation oscillogram involved by roller washing machine unbalance detection that the embodiment of the present invention provides;
Fig. 6 is the Parameters variation oscillogram involved by roller washing machine unbalance detection that the embodiment of the present invention provides;
Fig. 7 is the Parameters variation oscillogram involved by roller washing machine unbalance detection that the embodiment of the present invention provides;
Fig. 8 is the Parameters variation oscillogram involved by roller washing machine unbalance detection that the embodiment of the present invention provides;
Fig. 9 is the Parameters variation oscillogram involved by roller washing machine unbalance detection that the embodiment of the present invention provides;
Figure 10 is the structure chart of the uneven checkout gear of roller washing machine that the embodiment of the present invention provides;
Figure 11 is the structure chart of the uneven checkout gear of another kind of roller washing machine that the embodiment of the present invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 shows the realization flow of the roller washing machine unbalance detection that the embodiment of the present invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows:
In step sl, when cylinder at the uniform velocity operates, the rotating speed of described cylinder detected and obtain the first fluctuation of speed value.
Specifically comprise the following steps in above-mentioned steps S1:
In drum rotating week age, the rotating speed of cylinder is detected, and obtain maximum and the minimum of a value of actual speed;
The first fluctuation of speed value is obtained after the maximum of actual speed and minimum of a value are carried out difference operation.
It should be noted that: the speed trajectory of washing machine drum carries out Accelerating running again for first carrying out traveling at the uniform speed herein, such as, when the rotary speed setting at the uniform velocity section cylinder is 90rpm (rev/min), detect the rotary speed of cylinder at the uniform velocity section, to go forward side by side the fluctuation of speed of one-step recording at the uniform velocity section, obtain actual speed and also sort to obtain maximum and minimum of a value to actual speed.
In step s 2, carry out in the process of accelerated service at cylinder according to constant acceleration, the second fluctuation of speed value of Real-time Obtaining cylinder.
In above-mentioned steps S2, the step of the second fluctuation of speed value of Real-time Obtaining cylinder is specially:
In drum rotating week age, the rotating speed of cylinder is detected, and obtain maximum and the minimum of a value of actual speed;
The second fluctuation of speed value is obtained after the maximum of actual speed and minimum of a value are carried out difference operation.
It should be noted that: washing machine drum is carrying out Accelerating running herein, detect the rotary speed of cylinder at accelerating sections, the fluctuation of speed of one-step recording at accelerating sections of going forward side by side, obtain actual speed and sort to obtain maximum and minimum of a value to actual speed.
In step s3, judge whether the difference of the first fluctuation of speed value and the second fluctuation of speed value is greater than default uneven threshold values, is, then perform step S4, no, then perform step S10.
It should be noted that: above-mentioned default uneven threshold values refers to the fluctuation of speed reference value whether occurring dynamic unbalance for weighing cylinder preset herein.
In step s 4 which, judge that dynamic unbalance appears in cylinder.
In step slo, judge that dynamic unbalance does not appear in cylinder.
Control described cylinder according to default washing procedure after step S10 to remain in operation.Wherein, default washing procedure herein can be roller washing machine required high speed dewatering operation performed after completing the washing operation to clothing.
Further, as shown in Figure 2, further comprising the steps of after step S4:
In step s 5, judge whether the executed number of operations that shakes loose of cylinder is greater than preset times value, is, then perform step S6, no, then perform step S7.
In step s 6, index drum shuts down.
In the step s 7, index drum performs and shakes loose operation and carry out low-speed running subsequently, and returns execution step S1.
Wherein, shake loose operation and refer to that cylinder carries out the homodisperse operation of current institute's washing product shaking its inside is held under the control of motor, shake loose operation by execution and cylinder can be made to restore balance; Preset times value refer to preset shake loose number of operations, it shakes loose the number of times whether operation has reached regulation for weighing performed by roller washing machine, if, then show that the dynamic unbalance of cylinder cannot shake loose operation by execution and solve, need to shut down to avoid the parts in roller washing machine to be damaged; If not, then index drum execution operation can be shaken loose to make cylinder restore balance.
Further, as shown in Figure 3, for further comprising the steps of before above-mentioned steps S1:
Step S8. carries out static unbalance detection when cylinder at the uniform velocity operates to cylinder;
Step S9. judges that whether cylinder static unbalance is lower than default uneven threshold values, is, then perform step S1, no, then perform step S5.
Wherein, in the process of cylinder low-speed running, need first to carry out static unbalance detection to cylinder, if static unbalance appears in cylinder, then cannot carry out dynamic unbalance detection, so need could perform step S1 when cylinder is in static balancing.Above-mentionedly mentioned static unbalance is carried out to cylinder detect same as the prior art, therefore repeat no more.
After being provided with above-mentioned steps S8 and S9, wherein index drum performs and shakes loose operation and after carrying out low-speed running subsequently, return and perform step S8 in the step s 7.
Below in conjunction with instantiation, above-mentioned roller washing machine unbalance detection is described further:
Suppose that the rotating speed of cylinder when low-speed running is 90rpm (rev/min), be accelerate to 220rpm from 90rpm in the process of carrying out accelerated service according to constant acceleration.When cylinder is according to 90rpm low-speed running, if cylinder static unbalance does not exceed default uneven threshold values, then can detect the rotating speed that drum rotating one encloses, and according to the maximum of detected actual speed and minimum of a value to obtain the first fluctuation of speed value A.Accelerate to the process of 220rpm according to constant acceleration from 90rpm at cylinder, second fluctuation of speed value of Real-time Obtaining cylinder, the rotating speed specifically enclosed drum rotating one when rotated carries out detection and obtains actual speed, and obtain the second fluctuation of speed value B according to the maximum of detected actual speed and minimum of a value, then judge whether cylinder occurs dynamic unbalance according to the first fluctuation of speed value A and the second fluctuation of speed value B, during this deterministic process, the second fluctuation of speed value B and the first fluctuation of speed value A is carried out asking difference operation to obtain fluctuation of speed difference C (C=B-A), and judge whether fluctuation of speed difference C is greater than default uneven threshold X, if, judge that dynamic unbalance appears in cylinder, if not, then judge that dynamic unbalance does not appear in cylinder.When there is dynamic unbalance in cylinder, index drum stops accelerated service, so that there is damaged in collision in the mechanical part alleviated in washing machine, and judge whether the executed number of operations that shakes loose is greater than preset times value Y simultaneously, if, then showing that cylinder cannot restore balance by shaking loose operation, needing index drum at once to shut down, to avoid the mechanical part in washing machine, further gouging abrasion occurring; If not, then index drum execution can shake loose operation to make cylinder restore balance, and continue when cylinder low-speed running to carry out static unbalance detection to cylinder.When dynamic unbalance does not appear in cylinder, carry out running up to continue dehydrating operations to clothes according to 220rpm according to default washing procedure (as high speed dewatering operation) index drum.
In addition, when carrying out static unbalance to cylinder and detecting, if cylinder static unbalance exceedes default uneven threshold value, then judge whether the executed number of operations that shakes loose is greater than preset times value Y, if, then showing that cylinder cannot restore balance by shaking loose operation, needing index drum at once to shut down, to avoid the mechanical part in washing machine, further gouging abrasion occurring; If not, then index drum execution can shake loose operation to make cylinder restore balance, and continue when cylinder low-speed running to carry out static unbalance detection to cylinder.
By adopting above-mentioned roller washing machine unbalance detection, dynamic unbalance detection can be carried out when cylinder low-speed running and accelerated service, avoid and carry out dynamic unbalance detection when cylinder runs up and cause mechanical part to occur the problem of impaction lesion.In actual applications, obtain in the embodiment of the second fluctuation rotating speed at the first, when imbalance detection is carried out to cylinder, be usually divided into following three kinds of situations:
(1) cylinder meets static balancing and dynamic equilibrium simultaneously; Fig. 4 is under empty bucket balanced load situation, the waveform of fluctuation of speed information and dynamic unbalance amount after actual speed in cylinder accelerator, process, along with the increase of rotating speed, fluctuation of speed change is less, dynamic unbalance amount does not reach the dynamic unbalance threshold values of setting, can continue to accelerate to high regime, test result is consistent with expected design.
(2) cylinder is in dynamic unbalance state; Fig. 5 is the waveform of fluctuation of speed information after actual speed in cylinder accelerator, process, dynamic unbalance amount.Become large in the fluctuation of speed of accelerating sections gradually with the increase of speed, speed increases rear fluctuation and is greater than at the uniform velocity section, and dynamic unbalance amount, higher than the threshold values of setting, cannot continue to accelerate to high regime, carry out shaking loose operation after needing stopping, test result is consistent with expected design.
(3) cylinder is in static unbalance load condition; As shown in Figure 6, the waveform of the speed command in cylinder accelerator, real-time rotate speed, dynamic unbalance amount, along with the increase of rotating speed, the fluctuation of speed more at the uniform velocity section diminishes, dynamic unbalance amount does not reach the dynamic unbalance threshold values of setting, can continue to accelerate to high regime, test result is consistent with expected design.
In actual applications, obtain at the second in the embodiment of the second fluctuation rotating speed, when imbalance detection is carried out to cylinder, be usually divided into following three kinds of situations:
(1) cylinder meets static balancing and dynamic equilibrium simultaneously; Fig. 7 is under empty bucket balanced load situation, the waveform of fluctuation of speed information, dynamic unbalance amount after actual speed in cylinder accelerator, process, along with the increase of rotating speed, fluctuation of speed change is less, dynamic unbalance amount does not reach the dynamic unbalance threshold values of setting, can continue to accelerate to high regime, test result is consistent with expected design.
(2) cylinder is in dynamic unbalance state; Fig. 8 under there is dynamic unbalance state, the waveform of fluctuation of speed information, dynamic unbalance amount after the actual speed in cylinder accelerator, process.Become large in the fluctuation of speed of accelerating sections gradually with the increase of speed, speed increases rear fluctuation and is greater than at the uniform velocity section, and dynamic unbalance amount, higher than the threshold values of setting, cannot continue to accelerate to high regime, carry out shaking loose operation after needing stopping, test result is consistent with expected design.
(3) cylinder is in static unbalance load condition; Fig. 9 is under empty bucket static unbalance load condition, the waveform of the speed command in cylinder accelerator, real-time rotate speed, dynamic unbalance amount, along with the increase of rotating speed, the fluctuation of speed more at the uniform velocity section diminishes, dynamic unbalance amount does not reach the dynamic unbalance threshold values of setting, can continue to accelerate to high regime.Test result is consistent with expected design.
In sum, roller washing machine is being carried out in the uneven process detected, the embodiment of the present invention cylinder at the uniform velocity to operate according to low speed and static balancing time, the rotating speed of cylinder is detected and obtains the first fluctuation of speed value, then when cylinder carries out accelerated service according to constant acceleration, second fluctuation of speed value of Real-time Obtaining cylinder, and judge whether cylinder occurs dynamic unbalance according to described first fluctuation of speed value and this second fluctuation of speed value, if, then index drum stops accelerated service, and judge whether the executed number of operations that shakes loose of cylinder is greater than preset times value, be, then index drum shuts down, no, then index drum performs and shakes loose operation and carry out low-speed running subsequently, and when cylinder low-speed running, static unbalance detection is carried out to it, detect without the need to adopting sensor to carry out imbalance in the process, reduce cost and detection difficulty, and dynamic unbalance detection can be carried out when cylinder low-speed running and accelerated service, avoid and carry out dynamic unbalance detection when cylinder runs up and cause mechanical part to occur the problem of impaction lesion.
Based on above-mentioned roller washing machine unbalance detection, the embodiment of the present invention additionally provides the uneven checkout gear of roller washing machine, as shown in Figure 10, it comprises the first fluctuation of speed acquisition module 200, second fluctuation of speed acquisition module 600 and dynamic unbalance judge module 300.
First fluctuation of speed acquisition module 200 is for detecting the rotating speed of cylinder when cylinder at the uniform velocity operates and obtaining the first fluctuation of speed value.
Second fluctuation of speed acquisition module 600 for carrying out in the process of accelerated service at cylinder according to constant acceleration, the second fluctuation of speed value of cylinder described in Real-time Obtaining.
Dynamic unbalance judge module 300 is for judging whether the difference of the first fluctuation of speed value and described second fluctuation of speed value is greater than default uneven threshold values, if difference is greater than uneven threshold values, then judge that dynamic unbalance appears in cylinder, otherwise judge that dynamic unbalance does not appear in cylinder.
Further, the rotating speed of the first fluctuation of speed acquisition module 200 pairs of cylinders detects and the process obtaining the first fluctuation of speed value is specially:
In drum rotating week age, the rotating speed of cylinder is detected, and obtain maximum and the minimum of a value of actual speed.
The first fluctuation of speed value is obtained after the maximum of actual speed and minimum of a value are carried out difference operation.
Further, the process of the second fluctuation of speed value of the second fluctuation of speed acquisition module 600 Real-time Obtaining cylinder is specially:
In drum rotating week age, the rotating speed of cylinder is detected, and obtain maximum and the minimum of a value of actual speed.
The second fluctuation of speed value is obtained after the maximum of actual speed and minimum of a value are carried out difference operation.
Further, as shown in figure 11, the uneven checkout gear of roller washing machine also comprises and shakes loose number of times judge module 500, shakes loose number of times judge module 500 for judging whether the executed number of operations that shakes loose of cylinder is greater than preset times value; When judged result is for being, index drum shuts down; When judged result is no, index drum performs to shake loose and operates and carry out low-speed running, and drives the first fluctuation of speed acquisition module 200 to work.
In addition, the uneven checkout gear of roller washing machine also comprises static unbalance detection module 100, by shaking loose number of times judge module 500, static unbalance detection module 100 for detecting that cylinder static unbalance exceedes default uneven threshold values, then judges whether the executed number of operations that shakes loose of cylinder is greater than preset times value; When judged result is for being, cylinder control module 400 index drum shuts down; When judged result is no, cylinder control module 400 index drum performs to shake loose and operates and carry out low-speed running, and drives static unbalance detection module 100 to work.
Roller washing machine is being carried out in the uneven process detected, by the first fluctuation of speed acquisition module when cylinder at the uniform velocity operates according to low speed, the rotating speed of cylinder is detected and obtains the first fluctuation of speed value, then by dynamic unbalance judge module when cylinder carries out accelerated service according to constant acceleration, second fluctuation of speed value of Real-time Obtaining cylinder, and judge whether cylinder occurs dynamic unbalance according to described first fluctuation of speed value and this second fluctuation of speed value, if, then cylinder control module index drum stops accelerated service, and judge whether the executed number of operations that shakes loose of cylinder is greater than preset times value by shaking loose number of times judge module, be, then cylinder control module index drum shuts down, no, then cylinder control module index drum performs to shake loose and operates and carry out low-speed running, and drive the work of static unbalance detection module, detect without the need to adopting sensor to carry out imbalance in the process, reduce cost and detection difficulty, and dynamic unbalance detection can be carried out when cylinder low-speed running and accelerated service, avoid and carry out dynamic unbalance detection when cylinder runs up and cause mechanical part to occur the problem of impaction lesion.
Based on the uneven checkout gear of above-mentioned roller washing machine, the embodiment of the present invention additionally provides a kind of roller washing machine, and it comprises cylinder and the uneven checkout gear of above-mentioned roller washing machine.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a roller washing machine unbalance detection, is characterized in that, described roller washing machine unbalance detection comprises the following steps:
A. when cylinder at the uniform velocity operates, the rotating speed of described cylinder detected and obtain the first fluctuation of speed value;
B. carry out in the process of accelerated service at described cylinder according to constant acceleration, the second fluctuation of speed value of cylinder described in Real-time Obtaining;
C. judge whether the difference of described first fluctuation of speed value and described second fluctuation of speed value is greater than default uneven threshold values, if described difference is greater than described default uneven threshold values, then judge that dynamic unbalance appears in described cylinder, otherwise judge that dynamic unbalance does not appear in described cylinder.
2. roller washing machine unbalance detection as claimed in claim 1, it is characterized in that, described steps A specifically comprises the following steps:
In described drum rotating week age, the rotating speed of described cylinder is detected, and obtain maximum and the minimum of a value of described actual speed;
The first fluctuation of speed value is obtained after the maximum of described actual speed and minimum of a value are carried out difference operation.
3. roller washing machine unbalance detection as claimed in claim 1, it is characterized in that, described step B comprises the following steps:
In described drum rotating week age, the rotating speed of described cylinder is detected, and obtain maximum and the minimum of a value of described actual speed;
The second fluctuation of speed value is obtained after the maximum of described actual speed and minimum of a value are carried out difference operation.
4. the uneven checkout gear of roller washing machine, is characterized in that, the uneven checkout gear of described roller washing machine comprises:
First fluctuation of speed acquisition module, the second fluctuation of speed acquisition module and dynamic unbalance judge module;
Described first fluctuation of speed acquisition module is used for detecting the rotating speed of described cylinder when cylinder at the uniform velocity operates and obtaining the first fluctuation of speed value;
Described second fluctuation of speed acquisition module is used for carrying out in the process of accelerated service at described cylinder according to constant acceleration, the second fluctuation of speed value of cylinder described in Real-time Obtaining;
Described dynamic unbalance judge module is for judging whether the difference of described first fluctuation of speed value and described second fluctuation of speed value is greater than default uneven threshold values, if described difference is greater than described uneven threshold values, then judge that dynamic unbalance appears in described cylinder, otherwise judge that dynamic unbalance does not appear in described cylinder.
5. the uneven checkout gear of roller washing machine as claimed in claim 4, is characterized in that, the rotating speed of described first fluctuation of speed acquisition module to described cylinder detects and the process obtaining the first fluctuation of speed value is specially:
In described drum rotating week age, the rotating speed of described cylinder is detected, and obtain maximum and the minimum of a value of described actual speed;
The first fluctuation of speed value is obtained after the maximum of described actual speed and minimum of a value are carried out difference operation.
6. the uneven checkout gear of roller washing machine as claimed in claim 4, it is characterized in that, described in described second fluctuation of speed acquisition module Real-time Obtaining, the process of the second fluctuation of speed value of cylinder is specially:
In described drum rotating week age, the rotating speed of described cylinder is detected, and obtain maximum and the minimum of a value of described actual speed;
The second fluctuation of speed value is obtained after the maximum of described actual speed and minimum of a value are carried out difference operation.
7. a roller washing machine, comprises cylinder, it is characterized in that, described roller washing machine also comprises the uneven checkout gear of roller washing machine as described in any one of claim 4-6.
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| CN201510468361.3A CN105155206B (en) | 2015-07-31 | 2015-07-31 | Roller washing machine and its unbalance detection and device |
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| CN201510468361.3A CN105155206B (en) | 2015-07-31 | 2015-07-31 | Roller washing machine and its unbalance detection and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024088203A1 (en) * | 2022-10-25 | 2024-05-02 | 青岛海尔洗衣机有限公司 | Method for increasing spin-drying achievement rate of washing machine, and storage medium and electronic apparatus |
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| CN104452187A (en) * | 2014-11-21 | 2015-03-25 | 广东威灵电机制造有限公司 | Roller washing machine and unbalance detection method and device thereof |
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| CN1240848A (en) * | 1998-07-02 | 2000-01-12 | 三星电子株式会社 | Method for detecting unbalanced drum in drum type washing machine |
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| JP2009165682A (en) * | 2008-01-17 | 2009-07-30 | Panasonic Corp | Washing machine, method for controlling drum rotating speed, and program |
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| WO2024088203A1 (en) * | 2022-10-25 | 2024-05-02 | 青岛海尔洗衣机有限公司 | Method for increasing spin-drying achievement rate of washing machine, and storage medium and electronic apparatus |
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| CN105155206B (en) | 2017-10-31 |
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