CN104452187B - Roller washing machine and unbalance detection method and device thereof - Google Patents
Roller washing machine and unbalance detection method and device thereof Download PDFInfo
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- CN104452187B CN104452187B CN201410676583.XA CN201410676583A CN104452187B CN 104452187 B CN104452187 B CN 104452187B CN 201410676583 A CN201410676583 A CN 201410676583A CN 104452187 B CN104452187 B CN 104452187B
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Abstract
The invention belongs to the field of detection and control technologies of washing machines and provides a roller washing machine and an unbalance detection method and device of the roller washing machine. The method comprises the steps that when a roller operates at a low uniform velocity, the torque of the roller is detected, and the average value of torque ripple is acquired; afterwards, when the roller operates in a constant-acceleration mode, the torque ripple values of the roller are acquired in real time, and whether dynamic unbalance happens on the roller or not is judged according to the average value of torque ripple and the torque ripple values; if yes, the roller is controlled to stop accelerated operation, and whether the frequency of shake scattering operations executed by the roller is larger than a preset frequency value or not is judged; if yes, the roller is controlled to stop operation; if not, the roller is controlled to execute shake scattering operations and then operates at a low velocity, and static unbalance detection is performed on the roller during low-velocity operation of the roller; accordingly, there is no need to adopt sensors for unbalance detection, so that the cost and detection difficulty are lowered; besides, the problem that dynamic unbalance detection is performed during high-velocity operation of the roller, so that mechanical parts are collided and damaged is avoided.
Description
Technical field
The invention belongs to machine testing control technology field of doing washing, more particularly to a kind of roller washing machine and its uneven detection
Method and apparatus.
Background technology
In roller washing machine, when the cylinder that frequency conversion motor is driven is uneven, the rotating speed of frequency conversion motor is higher, then be
The vibration of system and noise will be bigger, so as to reduce the service life of roller washing machine.Frequency conversion motor has laod unbalance
Detection function, when finding that load is uneven (such as cylinder), unbalanced state that can be by adjusting rotating speed or to loading is carried out
Change, to reach the vibration of reduction system and the purpose of noise.
Prior art provides following two unbalance detections：
(1) by detecting to whether cylinder balances using sensor, but sensor relatively costly and it is not easy to peace
Dress, so as to cause detection difficulty big.
(2) by judging that cylinder is according to the rotating speed of frequency conversion motor or torque in low cruise stage and high-speed cruising stage
No balance；However, this method is carried out in the low-speed running stage (motor is traveled at the uniform speed according to fixed rotary speed) to cylinder
Static unbalance cannot simultaneously realize that dynamic unbalance is detected when detecting, and because cylinder is to run up in the stage of running up
, dynamic unbalance detection is carried out during running up can make the mechanical part of washing machine internal collide and cause to wash
Clothing machine is damaged.
In sum, prior art has high cost, detection difficulty cannot enter action to cylinder greatly, in the low cruise stage
State imbalance is detected and carrying out dynamic unbalance detection in the high-speed cruising stage easily makes the mechanical part of washing machine internal occur touching
The problem of damage evil.
The content of the invention
It is an object of the invention to provide a kind of roller washing machine unbalance detection, it is intended to solve prior art and deposited
High cost, detection difficulty is big, dynamic unbalance detection cannot be carried out to cylinder in the low-speed running stage and is being run up
Stage carries out dynamic unbalance detection easily makes the mechanical part of washing machine internal the problem of impaction lesion occur.
The present invention is achieved in that a kind of roller washing machine unbalance detection, and it is comprised the following steps：
A. static unbalance detection is carried out to cylinder in cylinder low-speed running；
If B. the cylinder static unbalance is not less than prescribed threshold, the torque to the cylinder is detected and obtained
Torque ripple meansigma methodss；
C. during the cylinder carries out accelerated service according to constant acceleration, the torque of the cylinder is obtained in real time
Undulating value, and judge whether the cylinder dynamic injustice occurs according to the torque ripple meansigma methodss and the torque ripple value
Weighing apparatus, be, then execution step D, no, then execution step H；
D. control the cylinder and stop accelerated service；
E. judge that the executed number of operations that shakes loose of the cylinder, whether more than preset times value, is that execution step F is no,
Then execution step G；
F. control the cylinder to shut down；
G. control the cylinder execution to shake loose operation and subsequently carry out low-speed running, and return execution step A；
H. control the cylinder according to default washing procedure to remain in operation.
Present invention also offers a kind of roller washing machine imbalance detection means, it includes：
Static unbalance detection module, low speed torque fluctuation acquisition module, dynamic unbalance judge module, cylinder control mould
Block and shake loose number of times judge module；
The static unbalance detection module is used to carry out static unbalance detection to cylinder in cylinder low-speed running；
If the low speed torque fluctuation acquisition module is used for cylinder static unbalance not less than prescribed threshold, to the rolling
The torque of cylinder is detected and is obtained torque ripple meansigma methodss；
The dynamic unbalance judge module is used to carry out the process of accelerated service according to constant acceleration in the cylinder
In, the torque ripple value of the cylinder is obtained in real time, and judged according to the torque ripple meansigma methodss and the torque ripple value
Whether the cylinder there is dynamic unbalance；
When the judged result of the dynamic unbalance judge module is to be, the cylinder control module is described for controlling
Cylinder stops accelerated service；
It is described to shake loose number of times judge module for judging the executed number of operations that shakes loose of cylinder whether more than preset times
Value；When judged result is to be, the cylinder control module is additionally operable to control the cylinder to shut down；When judged result is no
When, the cylinder control module is additionally operable to control the cylinder and performs shake loose operation and subsequently carry out low-speed running, and drives institute
State the work of static unbalance detection module；
When the judged result of the dynamic unbalance judge module is no, the cylinder control module is additionally operable to according to pre-
If washing procedure controls the cylinder remaining in operation.
Present invention also offers a kind of roller washing machine, it includes cylinder and the uneven detection of above-mentioned roller washing machine
Device.
During uneven detection is carried out to roller washing machine, the present invention carries out Running at a constant speed in cylinder according to low speed
When, the torque to cylinder is detected and is obtained torque ripple meansigma methodss, is then accelerated according to constant acceleration in cylinder
During operating, the torque ripple value of cylinder is obtained in real time, and judge rolling according to the torque ripple meansigma methodss and the torque ripple value
Cylinder whether there is dynamic unbalance, if so, then control cylinder stop accelerated service, and judge cylinder it is executed shake loose operation time
Whether number is more than preset times value, is, then control cylinder and shut down, no, then control cylinder execution and shake loose operation and with laggard
Row low-speed running, and static unbalance detection is carried out to it in cylinder low-speed running, sensor need not be adopted in the process
Uneven detection is carried out, cost and detection difficulty is reduced, and Mobile state can be entered not in cylinder low-speed running and accelerated service
Balance detection, it is to avoid carry out dynamic unbalance detection when cylinder runs up and cause mechanical part impaction lesion occur
Problem.
Description of the drawings
Fig. 1 is the flowchart of roller washing machine unbalance detection provided in an embodiment of the present invention；
Fig. 2 is another flowchart of roller washing machine unbalance detection provided in an embodiment of the present invention；
Fig. 3 is the Parameters variation waveform involved by roller washing machine unbalance detection provided in an embodiment of the present invention
Figure；
Fig. 4 is the Parameters variation waveform involved by roller washing machine unbalance detection provided in an embodiment of the present invention
Figure；
Fig. 5 is the Parameters variation waveform involved by roller washing machine unbalance detection provided in an embodiment of the present invention
Figure；
Fig. 6 is the Parameters variation waveform involved by roller washing machine unbalance detection provided in an embodiment of the present invention
Figure；
Fig. 7 is the structure chart of roller washing machine imbalance detection means provided in an embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
What Fig. 1 showed roller washing machine unbalance detection provided in an embodiment of the present invention realizes flow process, in order to just
In explanation, the part related to the embodiment of the present invention is illustrate only, details are as follows：
In step sl, static unbalance detection is carried out to cylinder in cylinder low-speed running.
Wherein, during cylinder low-speed running, need first to carry out static unbalance detection to cylinder, if rolling
There is static unbalance in cylinder, then cannot carry out dynamic unbalance detection, so needing just to be held when cylinder is in static equilibrium
Row step S2.The above-mentioned mentioned static unbalance that carries out to cylinder detects same as the prior art, therefore repeats no more.
In step s 2, if cylinder static unbalance is not less than prescribed threshold, the torque to cylinder is detected and obtained
Take torque ripple meansigma methodss.
Wherein, above-mentioned prescribed threshold is whether the static unbalance degree for weighing cylinder set in advance reaches need
Perform the reference value for shaking loose operation to restore balance.
The torque of cylinder is detected and is specifically included in above-mentioned steps S2 and the step of obtained torque ripple meansigma methodss with
Lower step：
Real-time detection is carried out to the torque of cylinder within the time that cylinder often rotates a circle, and according to detected torque
Maximum and minima obtain single-revolution torque ripple value；
Accessed multiple single-revolution torque ripple values during cylinder rotation many weeks are carried out mean operation to obtain
Take torque ripple meansigma methodss.
Herein it should be noted that：The maximum of the torque detected by above-mentioned basis and minima obtain single-revolution torque ripple
The maximum and minima of detected torque actually are carried out seeking difference operation and obtain torque ripple value by dynamic value.
It is above-mentioned mean operation is carried out to accessed multiple single-revolution torque ripple values during cylinder rotation many weeks to be turned with obtaining
During square fluctuation meansigma methodss, the plurality of single-revolution torque ripple value can be accessed every time when rollers running is a few all
Single-revolution torque ripple value, for example：In rollers running 4 weeks, by accessed 4 single-revolution torque ripple values in this is 4 weeks
Carry out mean operation to obtain torque ripple value.
In step s3, during cylinder carries out accelerated service according to constant acceleration, turning for cylinder is obtained in real time
Square undulating value, and judge whether cylinder dynamic unbalance occurs according to above-mentioned torque ripple meansigma methodss and the torque ripple value, it is,
Then execution step S4, no, then execution step S8.
Wherein, the step of torque ripple value for obtaining cylinder in above-mentioned steps S3 in real time, is specially：
Torque to cylinder within the time that cylinder often rotates a circle detects, and according to detected torque most
Big value and minima obtain torque ripple value.
Herein it should be noted that：The maximum of the torque detected by above-mentioned basis and minima obtain torque ripple value
Process be actually to carry out seeking difference operation by the maximum and minima of detected torque and obtain torque ripple value.
Judge whether cylinder occurs moving according to above-mentioned torque ripple meansigma methodss and the torque ripple value in above-mentioned steps S3
The unbalanced step of state specifically includes following steps：
Torque ripple value and torque ripple meansigma methodss are carried out asking difference operation to obtain torque ripple difference；
Judge that torque ripple difference, whether more than default fluctuation threshold, is to judge that dynamic unbalance occurs in cylinder, it is no, then
Judge that dynamic unbalance does not occur in cylinder.
Herein it should be noted that：Above-mentioned default fluctuation threshold refers to set in advance for weighing whether cylinder occurs
One torque ripple reference value of dynamic unbalance.
In step s 4, control cylinder and stop accelerated service.
In step s 5, judge that the executed number of operations that shakes loose of cylinder, whether more than preset times value, is then to perform step
Suddenly S6, no, then execution step S7.
In step s 6, control cylinder to shut down.
In the step s 7, control cylinder execution to shake loose operation and subsequently carry out low-speed running, and return execution step S1.
Wherein, shake loose operation and refer to that cylinder is shaken so that what is accommodated inside it is currently washed under the control of motor
The homodisperse operation of article, shaking loose operation by execution can make cylinder restore balance；Preset times value refers to set in advance
Number of operations is shaken loose, it is used to weigh the number of times whether operation has reached regulation that shakes loose performed by roller washing machine, if it is,
Then showing the dynamic unbalance of cylinder cannot shake loose operation to solve by execution, and needs shut down to avoid laundry drum
Part in machine is damaged；If it is not, then controllable cylinder is performed shakes loose operation so that cylinder restores balance, then by step
Rapid S1 carries out static unbalance detection in cylinder low-speed running to cylinder, and then repeats when cylinder is in static equilibrium
Step S2 to S3, if cylinder is in dynamic equilibrium, just can perform step S8.
In step s 8, control cylinder according to default washing procedure to run up.Wherein, default washing procedure herein can
Operated with the high speed dewatering for being roller washing machine required execution after the washing operation to medicated clothing is completed.
Additionally, during static unbalance detection is carried out to cylinder in cylinder low-speed running for above-mentioned steps S1,
If judging that cylinder static unbalance exceedes prescribed threshold in detection process, as shown in Fig. 2 also include after step S1 with
Lower step S9：
In step s 9, if cylinder static unbalance exceedes prescribed threshold, execution step S5.
It follows that when there is static unbalance in cylinder, it is also possible to shake loose operation recovery by control cylinder execution and put down
Weighing apparatus, operating process is identical to step S7 with step S5, therefore repeats no more.
Above-mentioned roller washing machine unbalance detection is described further below in conjunction with instantiation：
Assume that rotating speed of the cylinder in low-speed running is 90rpm (rev/min), according to constant acceleration acceleration fortune is being carried out
It is to accelerate to 220rpm from 90rpm during turning.When cylinder is according to 90rpm low-speed runnings, if cylinder static unbalance
Not less than prescribed threshold, then the torque of cylinder can be detected, specifically to cylinder within the time that cylinder often rotates a circle
Torque carry out real-time detection, and the maximum according to detected torque and minima obtain single-revolution torque ripple value, so
Afterwards average is carried out to accessed multiple (such as 5) single-revolution torque ripple values during many weeks (such as 5 weeks) of cylinder rotation
Computing is obtaining torque ripple meansigma methodss A.It is real during cylinder accelerates to 220rpm according to constant acceleration from 90rpm
When obtain the torque ripple value of cylinder, the specifically torque to cylinder within the time that cylinder often rotates a circle detects, and
Torque ripple value B is obtained according to the maximum of detected torque and minima, then according to torque ripple meansigma methodss A and is turned
Square undulating value B judges whether cylinder dynamic unbalance occurs, by torque ripple value B and torque ripple meansigma methodss during this judge process
Whether A carries out asking difference operation to obtain torque ripple difference C (i.e. C=B-A), and judge torque ripple difference C more than default fluctuation
Threshold X, if it is, judge that dynamic unbalance occurs in cylinder, if it is not, then judging that dynamic unbalance does not occur in cylinder.In cylinder
Occur dynamic unbalance when, control cylinder stop accelerated service, to mitigate washing machine in mechanical part there is damaged in collision,
And while judge it is executed whether shake loose number of operations more than preset times value Y, if it is, showing that cylinder cannot pass through
Shake loose operation and restore balance, need to control cylinder at once to shut down, to avoid washing machine in mechanical part enter one
The gouging abrasion of step；If it is not, then controllable cylinder is performed shakes loose operation so that cylinder restores balance, and in cylinder low-speed running
Shi Jixu carries out static unbalance detection to cylinder.When dynamic unbalance does not occur in cylinder, according to default washing procedure (such as height
Fast dehydrating operations) control cylinder according to 220rpm run up with to clothes continue dehydrating operations.
Additionally, when static unbalance detection is carried out to cylinder, if cylinder static unbalance exceedes prescribed threshold, sentencing
Whether the disconnected executed number of operations that shakes loose is more than preset times value Y, if it is, showing that cylinder cannot pass through to shake loose operation
And restore balance, need to control cylinder at once to shut down, to avoid washing machine in mechanical part there is further collision
Abrasion；If it is not, then controllable cylinder is performed shakes loose operation so that cylinder restores balance, and continues right in cylinder low-speed running
Cylinder carries out static unbalance detection.
By using above-mentioned roller washing machine unbalance detection, entering in cylinder low-speed running and accelerated service
Mobile state uneven detection, it is to avoid carry out dynamic unbalance detection when cylinder runs up and cause mechanical part to occur touching
The problem of damage evil.In actual applications, when uneven detection is carried out to cylinder, it is generally divided into following four situation：
(1) cylinder meets static equilibrium and dynamic equilibrium simultaneously；As shown in figure 3, carrying out according to constant acceleration in cylinder
During accelerated service, torque ripple slightly diminishes relative to torque ripple during low-speed running, so being obtained during this
The torque ripple difference for taking can less than default fluctuation threshold, therefore cylinder can continue to accelerate to the stage of running up it is default to perform
Washing procedure (such as high speed dewatering operation).
(2) only there is dynamic unbalance in cylinder；As shown in figure 4, carrying out accelerated service according to constant acceleration in cylinder
During, torque ripple becomes larger with the increase of rotating speed, so torque ripple difference acquired during this can be big
In default fluctuation threshold, i.e. cylinder occurs in that dynamic unbalance, needs to stop accelerated service, and execution shakes loose operation to recover flat
Weighing apparatus.
(3) only there is static unbalance in cylinder；As shown in figure 5, carrying out accelerated service according to constant acceleration in cylinder
During, torque ripple is gradually decreased with the increase of rotating speed, and torque ripple is obvious relative to torque ripple during low-speed running
Diminish, so torque ripple difference acquired during this be able to can continue to accelerate to less than default fluctuation threshold, therefore cylinder
Run up the stage to perform default washing procedure (such as high speed dewatering operation).
(4) there is static unbalance and dynamic unbalance simultaneously in cylinder；As shown in fig. 6, due to being in static state in cylinder
Dynamic unbalance detection could be performed in the case of balance, so Fig. 6 is cylinder meets static equilibrium after execution shakes loose operation
In the case of resulting oscillogram, during cylinder carries out accelerated service according to constant acceleration, torque ripple is with turning
Speed increase and first reduce and increase afterwards, torque ripple after acceleration the phase occur be more than low-speed running when torque ripple situation,
So torque ripple difference acquired during this can occur in that dynamic unbalance more than default fluctuation threshold, i.e. cylinder, need
Stop accelerated service, and execution shakes loose operation to restore balance.
In sum, during uneven detection is carried out to roller washing machine, the embodiment of the present invention cylinder according to
When low speed carries out Running at a constant speed and static equilibrium, the torque to cylinder is detected and is obtained torque ripple meansigma methodss, Ran Hou
When cylinder carries out accelerated service according to constant acceleration, the torque ripple value of cylinder is obtained in real time, and according to the torque ripple
Meansigma methodss and the torque ripple value judge whether cylinder dynamic unbalance occurs, if so, then control cylinder and stop accelerated service, and
Judge that the executed number of operations that shakes loose of cylinder, whether more than preset times value, is then to control cylinder and shut down, it is no, then control
Cylinder processed performs and shakes loose operation and subsequently carry out low-speed running, and carries out static unbalance inspection to it in cylinder low-speed running
Survey, in the process without the need for carrying out uneven detection using sensor, reduce cost and detection difficulty, and can be in cylinder low speed
Operating and carry out dynamic unbalance detection during accelerated service, it is to avoid carry out dynamic unbalance detection when cylinder runs up and
Mechanical part is caused the problem of impaction lesion occur.
Based on above-mentioned roller washing machine unbalance detection, it is uneven that the embodiment of the present invention additionally provides roller washing machine
Weighing apparatus detection means, as shown in fig. 7, it includes static unbalance detection module 100, low speed torque fluctuation acquisition module 200, dynamic
Uneven judge module 300, cylinder control module 400 and shake loose number of times judge module 500.
Static unbalance detection module 100 is used to carry out static unbalance detection to cylinder in cylinder low-speed running.
If low speed torque fluctuation acquisition module 200 is used for cylinder static unbalance not less than prescribed threshold, to cylinder
Torque is detected and is obtained torque ripple meansigma methodss.
Dynamic unbalance judge module 300 is used for during cylinder carries out accelerated service according to constant acceleration, real
When obtain the torque ripple value of cylinder, and judge that the cylinder is according to the torque ripple meansigma methodss and the torque ripple value
It is no dynamic unbalance occur.
When the judged result of dynamic unbalance judge module 300 is to be, cylinder control module 400 is stopped for controlling cylinder
Only accelerated service.
Number of times judge module 500 is shaken loose for judging the executed number of operations that shakes loose of cylinder whether more than preset times
Value；When judged result is to be, cylinder control module 400 is additionally operable to control cylinder and shuts down；When judged result is no, rolling
Cylinder control module 400 is additionally operable to control cylinder perform and shakes loose and operate and carry out low-speed running, and drives static unbalance detection mould
Block 100 works.
When the judged result of dynamic unbalance judge module 300 is no, cylinder control module 400 is additionally operable to according to default
Washing procedure control cylinder runs up.
If additionally, static unbalance detection module 100 detects cylinder static unbalance more than prescribed threshold, by shaking loose
Whether number of times judge module 500 judges the executed number of operations that shakes loose of cylinder more than preset times value；When judged result is yes
When, the control cylinder of cylinder control module 400 shuts down；When judged result is no, the control cylinder of cylinder control module 400 is held
Row shakes loose and operates and carry out low-speed running, and drives static unbalance detection module 100 to work.
Further, torque of the low speed torque fluctuation acquisition module 200 to cylinder is detected and is obtained torque ripple and put down
The process of average is specially：
Real-time detection is carried out to the torque of cylinder within the time that cylinder often rotates a circle, and according to detected torque
Maximum and minima obtain single-revolution torque ripple value；
Accessed multiple single-revolution torque ripple values during cylinder rotation many weeks are carried out mean operation to obtain
Take torque ripple meansigma methodss.
Further, the process of the real-time torque ripple value for obtaining cylinder of dynamic unbalance judge module 300 is specially：
Torque to cylinder within the time that cylinder often rotates a circle detects, and according to detected torque most
Big value and minima obtain torque ripple value.
Whether dynamic unbalance judge module 300 judges cylinder according to above-mentioned torque ripple meansigma methodss and the torque ripple value
The process for dynamic unbalance occur is specially：
Torque ripple value and torque ripple meansigma methodss are carried out asking difference operation to obtain torque ripple difference；
Judge that torque ripple difference, whether more than default fluctuation threshold, is to judge that dynamic unbalance occurs in cylinder, it is no, then
Judge that dynamic unbalance does not occur in cylinder.
Based on above-mentioned roller washing machine imbalance detection means, the embodiment of the present invention additionally provides a kind of laundry drum
Machine, it includes cylinder and above-mentioned roller washing machine imbalance detection means.
During uneven detection is carried out to roller washing machine, acquisition module 200 is fluctuated in cylinder by low speed torque
When carrying out Running at a constant speed according to low speed, the torque to cylinder is detected and is obtained torque ripple meansigma methodss, then by dynamic not
Balance judge module 300 obtains in real time the torque ripple value of cylinder when cylinder carries out accelerated service according to constant acceleration, and
Judge whether cylinder dynamic unbalance occurs according to the torque ripple meansigma methodss and the torque ripple value, if so, then cylinder control
The control cylinder of molding block 400 stops accelerated service, and shakes loose operation by shaking loose number of times judge module 500 and judging that cylinder is executed
Whether number of times is more than preset times value, is, then the control of cylinder control module 400 cylinder shuts down, no, then cylinder control module
400 control cylinders are performed to shake loose and operate and carry out low-speed running, and drive static unbalance detection module 100 to work, here mistake
Without the need for carrying out uneven detection using sensor in journey, cost and detection difficulty are reduced, and in cylinder low-speed running and can be added
Dynamic unbalance detection is carried out during speed operating, it is to avoid carry out dynamic unbalance detection when cylinder runs up and cause machinery
There is the problem of impaction lesion in part.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of roller washing machine unbalance detection, it is characterised in that the roller washing machine unbalance detection bag
Include following steps：
A. static unbalance detection is carried out to cylinder in cylinder low-speed running；
If B. the cylinder static unbalance is not less than prescribed threshold, the torque to the cylinder is detected and is obtained torque
Fluctuation meansigma methodss；
C. during the cylinder carries out accelerated service according to constant acceleration, the torque ripple of the cylinder is obtained in real time
Value, and judge whether the cylinder dynamic unbalance occurs according to the torque ripple meansigma methodss and the torque ripple value, it is,
Then execution step D, no, then execution step H；
D. control the cylinder and stop accelerated service；
E. judge that the executed number of operations that shakes loose of the cylinder, whether more than preset times value, is that execution step F is no, then hold
Row step G；
F. control the cylinder to shut down；
G. control the cylinder execution to shake loose operation and subsequently carry out low-speed running, and return execution step A；
H. control the cylinder according to default washing procedure to remain in operation；
The torque of cylinder detected in step B and is specifically included following step the step of obtained torque ripple meansigma methodss
Suddenly：
Torque to the cylinder within the time that the cylinder often rotates a circle carries out real-time detection, and according to detected
The maximum of torque and minima obtain single-revolution torque ripple value；
Mean operation is carried out to accessed multiple described single-revolution torque ripple value during cylinder rotation many weeks
To obtain torque ripple meansigma methodss；
The step of torque ripple value for obtaining the cylinder in step C in real time, is specially：
Torque to the cylinder within the time that the cylinder often rotates a circle detects, and according to detected torque
Maximum and minima obtain torque ripple value；
Judge whether the cylinder dynamic occurs according to the torque ripple meansigma methodss and the torque ripple value in step C
Unbalanced step specifically includes following steps：
The torque ripple value and the torque ripple meansigma methodss are carried out asking difference operation to obtain torque ripple difference；
Judge that the torque ripple difference, whether more than default fluctuation threshold, is to judge that dynamic unbalance occurs in the cylinder,
It is no, then judge that dynamic unbalance does not occur in the cylinder.
2. roller washing machine unbalance detection as claimed in claim 1, it is characterised in that after step A also
Comprise the following steps：
If J. the cylinder static unbalance exceedes the prescribed threshold, step E is performed.
3. a kind of roller washing machine imbalance detection means, it is characterised in that the roller washing machine imbalance detection means bag
Include：
Static unbalance detection module, low speed torque fluctuation acquisition module, dynamic unbalance judge module, cylinder control module with
And shake loose number of times judge module；
The static unbalance detection module is used to carry out static unbalance detection to cylinder in cylinder low-speed running；
If the low speed torque fluctuation acquisition module is used for the cylinder static unbalance not less than prescribed threshold, to the rolling
The torque of cylinder is detected and is obtained torque ripple meansigma methodss；
The dynamic unbalance judge module is used for during the cylinder carries out accelerated service according to constant acceleration, real
When obtain the torque ripple value of the cylinder, and judge the rolling according to the torque ripple meansigma methodss and the torque ripple value
Whether cylinder there is dynamic unbalance；
When the judged result of the dynamic unbalance judge module is to be, the cylinder control module is used to control the cylinder
Stop accelerated service；
It is described to shake loose number of times judge module for judging the executed number of operations that shakes loose of the cylinder whether more than preset times
Value；When judged result is to be, the cylinder control module is additionally operable to control the cylinder to shut down；When judged result is no
When, the cylinder control module is additionally operable to control the cylinder and performs shake loose operation and subsequently carry out low-speed running, and drives institute
State the work of static unbalance detection module；
When the judged result of the dynamic unbalance judge module is no, the cylinder control module is additionally operable to be washed according to default
Wash cylinder described in programme-control to remain in operation；
Torque of the low speed torque fluctuation acquisition module to the cylinder is detected and is obtained the mistake of torque ripple meansigma methodss
Journey is specially：
Torque to the cylinder within the time that the cylinder often rotates a circle carries out real-time detection, and according to detected
The maximum of torque and minima obtain single-revolution torque ripple value；
Mean operation is carried out to accessed multiple described single-revolution torque ripple value during cylinder rotation many weeks
To obtain torque ripple meansigma methodss；
The dynamic unbalance judge module obtains in real time the process of the torque ripple value of the cylinder and is specially：
Torque to the cylinder within the time that the cylinder often rotates a circle detects, and according to detected torque
Maximum and minima obtain torque ripple value；
The dynamic unbalance judge module judges the cylinder according to the torque ripple meansigma methodss and the torque ripple value
The process for dynamic unbalance whether occur is specially：
The torque ripple value and the torque ripple meansigma methodss are carried out asking difference operation to obtain torque ripple difference；
Judge that the torque ripple difference, whether more than default fluctuation threshold, is to judge that dynamic unbalance occurs in the cylinder,
It is no, then judge that dynamic unbalance does not occur in the cylinder.
4. roller washing machine as claimed in claim 3 imbalance detection means, it is characterised in that if the cylinder is static uneven
Weighing apparatus exceedes the prescribed threshold, then judged cylinder whether executed to shake loose number of operations big by the number of times judge module that shakes loose
In preset times value；When judged result is to be, the cylinder control module control cylinder shuts down；When judged result is no
When, the cylinder control module control cylinder performs and shakes loose operation and subsequently carry out low-speed running, and drives described static uneven
Weighing apparatus detection module work.
5. a kind of roller washing machine, including cylinder, it is characterised in that the roller washing machine is also included such as the institute of claim 3 or 4
The roller washing machine imbalance detection means stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676583.XA CN104452187B (en) | 2014-11-21 | 2014-11-21 | Roller washing machine and unbalance detection method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676583.XA CN104452187B (en) | 2014-11-21 | 2014-11-21 | Roller washing machine and unbalance detection method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104452187A CN104452187A (en) | 2015-03-25 |
| CN104452187B true CN104452187B (en) | 2017-04-19 |
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| CN105088645B (en) * | 2015-05-28 | 2017-12-22 | 无锡小天鹅股份有限公司 | The rotation bucket control method of washing of roller washing machine |
| CN106283489B (en) * | 2015-05-29 | 2018-10-16 | 无锡小天鹅股份有限公司 | The control method and device of washing machine |
| CN105155204B (en) * | 2015-07-01 | 2018-03-13 | 无锡小天鹅股份有限公司 | The detection method and washing machine of clothing non-equilibrium state during laundry machine dehydration |
| CN104963169B (en) * | 2015-07-31 | 2017-10-31 | 广东威灵电机制造有限公司 | Roller washing machine and its unbalance detection and device |
| CN105155206B (en) * | 2015-07-31 | 2017-10-31 | 广东威灵电机制造有限公司 | Roller washing machine and its unbalance detection and device |
| BR112018001925B1 (en) * | 2015-07-31 | 2021-11-23 | Guangdong Welling Motor Manufacturing Co., Ltd. | UNBALANCE DETECTION METHOD, UNBALANCE DETECTION DEVICE, AND FRONT LOAD WASHING MACHINE |
| CN105862313A (en) * | 2016-04-29 | 2016-08-17 | 无锡小天鹅股份有限公司 | Eccentricity sensing method for pulsator washing machine and pulsator washing machine |
| CN105780392A (en) * | 2016-04-29 | 2016-07-20 | 无锡小天鹅股份有限公司 | Detection method of load status of washing machine and dewatering method |
| CN106436154A (en) * | 2016-09-30 | 2017-02-22 | 无锡小天鹅股份有限公司 | Washing machine and dehydration control method and device thereof |
| CN106544814B (en) * | 2016-09-30 | 2019-01-18 | 无锡小天鹅股份有限公司 | Washing machine and its wet cloth weighing method and device |
| BR112019008226B1 (en) * | 2016-10-25 | 2022-11-01 | Electrolux Do Brasil S/A | METHOD OF DETECTING UNBALANCE IN A WASHING MACHINE, METHOD OF DETECTING UNBALANCE IN A WASHING ASSEMBLY OF A WASHING MACHINE AND WASHING MACHINE |
| CN106436172B (en) * | 2016-11-01 | 2020-03-06 | 广东威灵电机制造有限公司 | Washing machine and unbalance detection method and device thereof |
| CN106637823B (en) * | 2016-12-13 | 2019-03-15 | 广东威灵电机制造有限公司 | Washing machine and its dehydration controlling method and device |
| CN106868785B (en) * | 2017-02-10 | 2019-05-21 | 无锡小天鹅股份有限公司 | Load Eccentric Adjusting Method and device based on roller washing machine |
| CN107202669A (en) * | 2017-05-31 | 2017-09-26 | 广东威灵电机制造有限公司 | Laod unbalance detection method, device and computer-readable recording medium |
| CN107152989A (en) * | 2017-05-31 | 2017-09-12 | 广东威灵电机制造有限公司 | Laod unbalance detection method, device and computer-readable recording medium |
| CN107202668A (en) * | 2017-05-31 | 2017-09-26 | 广东威灵电机制造有限公司 | Laod unbalance detection method, device and computer-readable recording medium |
| CN107144403A (en) * | 2017-05-31 | 2017-09-08 | 广东威灵电机制造有限公司 | Laod unbalance detection method, device and computer-readable recording medium |
| CN110616543B (en) * | 2018-06-19 | 2021-08-20 | 无锡小天鹅电器有限公司 | Eccentricity detection method of drum washing machine and drum washing machine |
| CN112011951B (en) * | 2019-05-30 | 2022-09-27 | 无锡小天鹅电器有限公司 | Laundry treatment apparatus, control method, control system, and readable storage medium |
| CN112011950B (en) * | 2019-05-30 | 2022-09-27 | 无锡小天鹅电器有限公司 | Laundry treatment apparatus, control method, control system, and readable storage medium |
| CN113089256B (en) * | 2021-03-22 | 2022-03-01 | 珠海格力电器股份有限公司 | Washing machine dehydration control method and washing machine |
| CN117966431A (en) * | 2022-10-25 | 2024-05-03 | 青岛海尔洗衣机有限公司 | Method for improving spin-drying achievement rate of washing machine, storage medium and electronic device |
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| US20090107185A1 (en) * | 2007-10-24 | 2009-04-30 | Mariano Filippa | Method and apparatus for determining an imbalance condition in an appliance |
| KR101028087B1 (en) * | 2008-05-23 | 2011-04-08 | 엘지전자 주식회사 | Washing machine and method for controlling washing machine |
| JP5650927B2 (en) * | 2010-05-20 | 2015-01-07 | ハイアール グループ コーポレーション | Washing machine |
| CN102888736B (en) * | 2012-05-31 | 2014-12-03 | 青岛澳柯玛洗衣机有限公司 | Device and method for detecting dehydration imbalance of drum washing machine |
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