CN110578229A - method for rapidly detecting eccentricity of washing machine - Google Patents
method for rapidly detecting eccentricity of washing machine Download PDFInfo
- Publication number
- CN110578229A CN110578229A CN201910901920.3A CN201910901920A CN110578229A CN 110578229 A CN110578229 A CN 110578229A CN 201910901920 A CN201910901920 A CN 201910901920A CN 110578229 A CN110578229 A CN 110578229A
- Authority
- CN
- China
- Prior art keywords
- eccentricity
- rotating speed
- washing machine
- motor
- drum
- 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
Abstract
The invention discloses a method for rapidly detecting the eccentricity of a washing machine, and belongs to the technical field of washing machine equipment. The existing eccentricity detection needs to enable the washing machine to reach a set rotating speed and maintain the rotating speed, and after the rotating speed is stable, the eccentricity condition of the drum washing machine is judged according to the rotating speed difference value and the accumulated input power. Through continuous exploration and test, the eccentricity of the drum is obtained through the fluctuation deviation value of the rotating speed of the motor, the eccentricity of the drum can be rapidly detected in the acceleration stage of the drum of the washing machine, the technical bias that the eccentricity of the drum can be detected only after the rotating speed of the washing machine is stable in the prior art is broken, and the conception is ingenious. Meanwhile, the washing process is shortened, the adverse effects caused by the abrasion of clothes, the mechanical loss, the heat generation and the like can be reduced, and the performance and the customer experience degree of the washing machine can be effectively improved.
Description
Technical Field
the invention relates to a method for rapidly detecting the eccentricity of a washing machine, and belongs to the technical field of washing machine equipment.
background
The dewatering mode of the drum washing machine is that clothes move under the driving of the inner drum, the dewatering effect is achieved through the centrifugal force, when the clothes are not uniformly distributed, the dewatering is easy to vibrate, the drum is easy to collide, and the displacement is easy to occur in serious conditions, so that the service life of the running noise, the motor and the mechanical structure of the drum washing machine is influenced.
Chinese patent (CN108978116A) discloses a drum washing machine and an eccentricity detection control method and system thereof during dehydration, wherein the method comprises: when the drum washing machine executes a dehydration program, controlling a dehydration motor to perform accelerated operation at a first acceleration until the rotation speed reaches the first rotation speed and then maintaining the first time, and controlling the dehydration motor to perform accelerated operation at a second acceleration after the first time until the rotation speed of the dehydration motor reaches the second rotation speed; detecting the rotating speed of the dewatering barrel in the first time, and obtaining the rotating speed difference value between the maximum rotating speed and the minimum rotating speed of the dewatering barrel in the first time; acquiring accumulated input power of a dehydration motor when the rotation speed is increased from a first rotation speed to a preset rotation speed; and judging the eccentricity condition of the drum washing machine according to the rotation speed difference value and the accumulated input power, and controlling the dewatering motor according to the eccentricity condition. Therefore, the impact of the dewatering barrel during accelerated dewatering can be reduced or avoided, and the user experience is improved.
However, the eccentricity detection of the scheme needs to enable the washing machine to reach a set rotating speed and maintain the rotating speed, and after the rotating speed is stable, the eccentricity condition of the drum washing machine is judged according to the rotating speed difference and the accumulated input power.
furthermore, the above scheme can only roughly judge the eccentric condition of the drum washing machine, and the eccentric angle of the drum of the washing machine cannot be accurately calculated, so that the impact of the dewatering drum cannot be effectively reduced, and the user experience is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method for obtaining the eccentric amount of a roller through the fluctuation deviation value of the rotating speed of a motor, changing the original first-order control (controlled through the rotating speed deviation value) into the current second-order control (controlled through the rotating speed fluctuation deviation value), and realizing the real-time calculation of the eccentric amount of the roller; in the drum acceleration process, the drum eccentricity can be obtained, the washing time of the washing machine can be effectively reduced, and the performance of the washing machine and the customer experience can be effectively improved.
another object of the present invention is to provide a method for rapidly detecting the eccentricity of a washing machine, which can accurately calculate the eccentricity angle of the washing machine, thereby effectively reducing the impact of the spin-drying tub and providing a good user experience.
in order to achieve the first purpose, the technical scheme of the invention is as follows:
A method for rapidly detecting the eccentricity of a washing machine specifically comprises the following steps:
firstly, accelerating a motor to drive a roller to rotate, wherein the acceleration value of the motor is a;
Secondly, sampling and recording the actual rotating speed of the motor, and calculating the theoretical rotating speed of the motor;
thirdly, comparing the actual rotating speed of the motor with the theoretical rotating speed to obtain a rotating speed fluctuation value;
Fourthly, the motor drives the roller to rotate at least one circle to obtain a plurality of rotating speed fluctuation values;
Fifthly, screening out a maximum rotating speed fluctuation value and a minimum rotating speed fluctuation value;
And sixthly, calculating the fluctuation deviation value of the rotating speed of the motor in the process of accelerating the rotation of the motor-driven roller according to the maximum rotating speed fluctuation value and the minimum rotating speed fluctuation value, and further realizing the purpose of obtaining the eccentricity of the roller in the process of accelerating the roller.
through continuous exploration and test, the eccentricity of the drum is obtained through the fluctuation deviation value of the rotating speed of the motor, the eccentricity of the drum can be rapidly detected in the acceleration stage of the drum of the washing machine, and the technical bias that the eccentricity of the drum can be detected only after the rotating speed of the washing machine is stable in the prior art is broken through; the original first-order control (control through the rotating speed deviation value) is changed into the existing second-order control (control through the rotating speed fluctuation deviation value), the calculation of the eccentric amount of the roller can be completed in real time without waiting for the stability of the rotating speed of the roller, the conception is ingenious, the scheme is practical, and the method is practical and feasible.
furthermore, the invention can obtain the eccentric amount of the drum in the drum acceleration process, and can effectively reduce the washing time of the washing machine and the time required by the dehydration process. The existing washing machine generally needs 3 dehydration cycles for a complete washing process, and each cycle is tried for a plurality of times in the maximum attempt; if the detection time is shortened by 10s every time, the maximum washing period is shortened by about 2 minutes, and the maximum washing period can be shortened by 6 minutes in a complete washing process, so that the waiting dehydration time can be reduced, and the customer experience is improved.
Meanwhile, the washing process is shortened, the adverse effects caused by the abrasion of clothes, the mechanical loss, the heat generation and the like can be reduced, and the performance and the customer experience degree of the washing machine can be effectively improved.
as a preferable technical measure:
The rotating speed fluctuation value is the same time and the same sampling point, and the difference value of the actual rotating speed and the theoretical rotating speed of the motor ensures that the actual value corresponds to the theoretical value, so that the calculation is more reliable.
As a preferable technical measure:
because the weight of the load can influence the acceleration of the roller in different angles of the roller, the following calculation formula is obtained according to the relationship between the rotating speed of the motor and the acceleration and the eccentricity:
ωm(k)＝ωm(k-1)+α*ΔT+ρ*Voob(k-1)
ωm(k) -the current motor speed;
ωm(k-1) -last sampled motor speed;
k is the number of samples;
α -acceleration;
Δ T — the time it takes for the washing machine drum to rotate through a fixed angle θ of 360/L;
L is the number of sampling points of one circle of the roller;
rho is the influence coefficient of eccentricity on the motor speed at the current angle;
Voob(k-1) -the previous eccentricity value of the cylinder;
Theta is the rotating angle of the washing machine drum, and the scheme is detailed and feasible.
as a preferable technical measure:
at the beginning of the rotation of the drum, the eccentricity of the drum is zero, i.e. Voob＝0；
Therefore, the calculation formula of the theoretical rotating speed of the motor is as follows:
ωm(k)＝ωm(k-1)+α*ΔT。
as a preferable technical measure:
When the drum rotates through one turn, i.e. 360 °, starting from the starting position, at θ ∈ (0, 180), i.e. the eccentric load runs from the lowest point to the highest point, the eccentric load creates a drag on the speed due to gravity, resulting in:
ωm(k)＜ωm(0)+α*k*ΔT，θ∈(0，180)
ωm(k) Is the actual rotational speed of the motor,
ωm(0) + α k Δ T is the theoretical rotational speed of the motor;
when the eccentric amount exceeds an angle of 180 degrees and falls downwards, the gravity has positive influence on acceleration, and the method is easy to obtain:
ωm(n)＞ωm(180)+α*(n-k)*ΔT，θ∈(180，360)
ωm(n) is the actual rotational speed of the motor,
ωm(180) + α (n-k) Δ T is the theoretical rotational speed of the motor,
and n is the accumulated sampling times.
As a preferable technical measure:
calculating a rotating speed fluctuation value in each sampling period through a maximum value judgment function and a minimum value judgment function:
further obtaining the maximum rotating speed fluctuation value and the minimum rotating speed fluctuation value of the motor in one rotation of the washing machine drum
ωmax＝Max(ωm(k)-α*k*ΔT)
ωmin＝Min(ωm(k)-α*k*ΔT)
Max () -maximum decision function, the logic is as follows:
If (ω)max＜ωm(k)-α*k*Δ)
then ωmax＝ωm(k)-α*k*ΔT
Min () -minimum decision function, the logic is as follows:
if (ω)min＞ωm(k)-α*k*ΔT)
then ωmtn＝ωm(k) - α × k Δ T. The theoretical value and the actual value in each sampling period are judged through the criterion function, and the value meeting the requirement is selected, so that the scheme is simple and practical, and the concept is ingenious.
in order to achieve the second purpose, the technical scheme of the invention is as follows:
in the acceleration process, the magnitude of the eccentric quantity is calculated through the fluctuation deviation value of the rotating speed;
when theta rotates to 360 degrees, the theta is converted into the angle of the
Δω＝ωmax-ωmin
Calculating the maximum fluctuation deviation value of the rotating speed;
the eccentricity calculation formula of the acceleration process is expressed as follows:
Vdoob＝Q*Δω+U
Vdoob-the acceleration process calculates the OOB value, i.e. the eccentricity;
Q-the acceleration process calculates OOB, the coefficient of eccentricity;
u-the acceleration process calculates the OOB offset, Q, U, all measured;
thereby obtaining the eccentricity V when rotating for one circle in the acceleration processdoob。
the invention can accurately calculate the eccentric angle (eccentricity) of the washing machine barrel, further adjust or stop the rotation of the roller in time according to the change of the eccentric angle, effectively reduce the impact of the dewatering barrel (namely the roller), and has good user experience.
As a preferable technical measure:
roller speed omegadrumthe conversion relation with the motor rotating speed is as follows:
ωm-the motor speed;
ωdrum＝ωm/Belt；
Belt-transfer ratio of the washing machine.
as a preferable technical measure:
When the washing machine is started, the motor operates to drive the washing machine drum to rotate, the angle of the drum is accumulated, and the calculation formula is as follows because the angle of the motor and the angle of the washing machine drum have a proportional relation:
Dθ-the angle of the drum;
Dθ0-initial angle of the drum;
Mθ-the motor rotation angle.
as a preferable technical measure:
If the calculated eccentricity is larger than a set threshold value, stopping and restarting; if the eccentricity is smaller than the set threshold value, the next action can be directly carried out, and the time is saved.
Compared with the prior art, the invention has the following beneficial effects:
Through continuous exploration and test, the eccentricity of the drum is obtained through the fluctuation deviation value of the rotating speed of the motor, the eccentricity of the drum can be rapidly detected in the acceleration stage of the drum of the washing machine, the technical bias that the eccentricity of the drum can be detected only after the rotating speed of the washing machine is stable in the prior art is broken, and the conception is ingenious.
Furthermore, the invention can obtain the eccentric amount of the drum in the drum acceleration process, and can effectively reduce the washing time of the washing machine and the time required by the dehydration process. The existing washing machine generally needs 3 dehydration cycles for a complete washing process, and each cycle is tried for a maximum of ten times; if the detection time is shortened by 10s every time, the maximum washing period is shortened by about 2 minutes, and the maximum washing period can be shortened by 6 minutes in a complete washing process, so that the waiting dehydration time can be reduced, and the customer experience is improved.
Meanwhile, the washing process is shortened, the adverse effects caused by the abrasion of clothes, the mechanical loss, the heat generation and the like can be reduced, and the performance and the customer experience degree of the washing machine can be effectively improved.
Furthermore, the invention can accurately calculate the eccentricity of the washing machine barrel, and then timely adjust or stop the rotation of the roller according to the change of the eccentricity, thereby effectively reducing the impact of the roller and having good user experience.
drawings
FIG. 1 is a view showing a transfer model of a drum and a motor of a washing machine according to the present invention;
FIG. 2 is a schematic view of the eccentricity of the washing machine according to the present invention;
FIG. 3 is a schematic view of the measurement of the present invention;
fig. 4 is a schematic diagram comparing the present invention with the prior art.
Detailed Description
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
on the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
as shown in fig. 1 to 4, a method for rapidly detecting an eccentricity of a washing machine includes the steps of:
step A: in the initialization, the angle of the drum of the washing machine/the rotation speed of the motor is 0, and the acceleration is set to an initial value.
And B: starting the motor, accelerating to a rotating speed point omega for starting to test the eccentricity according to the initial acceleration a00。
and C: start measurementStage, starting speed is omega0And the acceleration is alpha, the angle theta of the roller starts to be accumulated, and the difference value between the rotating speed of the motor and the set value in the whole process is calculated. When θ accumulates to 360 degrees, the statistics are completed.
step D: calculating the current eccentricity, and stopping the machine and re-arranging if the eccentricity is larger than a set threshold; otherwise, continuing the dehydration process and carrying out the next action.
in step B of the above process, the starting value of the rotation speed ω0The rotating speed of the clothes of the washing machine attached to the wall of the drum is set, and the excessive eccentric amount fluctuation in the measuring process is prevented.
in the above process step C, the set value is the initial value + acceleration time, and the set value changes with time.
The above-described dehydration process is a stage after the washing machine completes the washing stage and discharges water.
In the dewatering process, firstly, the eccentricity is measured, and when the eccentricity is lower than the set dewatering value, the next action can be carried out. Otherwise, restarting is required, including reverse swinging and the like. And abandoning the dehydration until the eccentricity reaches the requirement or the number of attempts reaches the maximum number.
The invention can reduce the time required by the dehydration process, a complete washing process generally requires 3 dehydration cycles, and each cycle is tried for ten times at most; if the detection time is shortened by 10s in each attempt, the maximum washing period is shortened by about 2 minutes, and the maximum complete washing process can be shortened by 6 minutes. Therefore, the waiting dehydration time can be reduced, and the experience of customers is improved. Meanwhile, the washing process is shortened, and the adverse effects caused by the abrasion of clothes, the loss of machinery, heat generation and the like can be reduced.
As shown in fig. 1, because of the belt transmission, there is a transmission ratio between the angle of the motor and the angle of the drum, if the transmission ratio is 10 times, the motor rotates 10 degrees, and when the drum rotates 1 degree, the angle of the drum is accumulated, because there is a proportional relationship between the angle of the motor and the angle of the drum:
the formula is as follows:the motor of the washing machine is accelerated at a set acceleration a, and the drum rotating speed omegadrumreach the set rotating speed (such as 60 turns)
ωm-motor speed
ωdrum＝ωm/Belt (2)。
as shown in fig. 2, the eccentric load is positioned at the lowest by gravity when the motor is stationary, with the washing machine drum at the 0 degree position, and the cumulative angle begins when the washing machine drum rotates counterclockwise. When the eccentric load moves from a low point to a high point of the drum, the drum of the washing machine is influenced reversely by gravity, and the rotating speed is lower than the set rotating speed; when the eccentric load moves downward from the apex of the drum, the drum is positively influenced by gravity and rotates at a higher speed than the set speed.
ωm(k)＝ωm(k-1)+α*ΔT+ρ*Voob(k-1) (3)
ωm(k) -the current motor speed;
ωm(k-1) -last sampled motor speed
Alpha-acceleration
Delta T-time taken for the washing machine drum to rotate through a fixed angle theta of 360/L
L is the number of sampling points of one circle of the roller.
ρ is the coefficient of influence of eccentricity on the motor speed at the current angle.
As can be seen from equation (3): when V isoobWhen the content is equal to 0, the content,
ωm(k)＝ωm(k-1)+α*ΔT (4)
when the drum starts to rotate through one revolution (360 °) from the starting position, it can be known that, at θ ∈ (0, 180), i.e. when the eccentricity runs from the lowest point to the highest point, the eccentric load creates an obstruction to the speed due to gravity, resulting in an actual rotational speed less than the theoretical rotational speed, i.e.:
ωm(k＜ωm(0)+α*k*ΔT θ∈(0，180) (5)
And when the eccentricity exceeds an angle of 180 degrees and falls downwards, the gravity exerts positive influence on acceleration, and the actual rotating speed is easily obtained to be greater than the theoretical rotating speed, namely:
ωm(n)＞ωm(180)+α*(n-k)*ΔT θ∈(180，360) (6)
Also, when the eccentricity amount is 0.
ωm(k)＝ωm(0)+α*k*ΔT θ∈(0，360) (7)
The existing calculation method for detecting the eccentricity is as follows:
Voob＝A*(ωmax-ωmin)+B (8)
ωmaxwhen the rotating speed of the roller is stable, the maximum value of the rotating speed of the motor when the roller rotates for one circle
ωmin)-minimum value of motor speed when drum speed is stable and drum rotates one turn
A-coefficient of eccentricity
b-offset of eccentricity calculation.
It can be seen that the magnitude of the offset can be calculated from the deviation value of the rotation speed during acceleration.
furthermore, the invention obtains the eccentricity of the roller through continuous exploration and test and combining with the prior theoretical knowledge and through the fluctuation deviation value of the rotating speed of the motor, and the original first-order control is converted into the second-order control of the application, thereby realizing the real-time calculation of the eccentricity of the roller and further effectively saving the washing time of the washing machine.
The roller rotates for one circle, and the maximum rotating speed fluctuation value and the minimum rotating speed fluctuation value are screened out:
ωmax＝Max(ωm(k)-α*k*ΔT) (9)
ωmin＝Min(ωm(k)-α*k*ΔT) (10)
max () -maximum decision function, the logic of equation (9) is as follows:
If (ω)max＜ωm(k)-α*k*ΔT)
then ωmax＝ωm(k)-α*k*ΔT
Min () -minimum decision function, the logic of equation (10) is as follows:
if (ω)min＞ωm(k)-α*k*ΔT)
then ωmin＝ωm(k)-α*k*ΔT
When theta rotates to 360 degrees, the theta is converted into the angle of the
Δω＝ωmax-ωmin (11)
by the formula (8), the eccentricity amount calculation formula of the acceleration process can be expressed as:
Vdoob＝Q*Δω+U (12)
Vdoob-the acceleration procedure calculates the OOB value
q-accelerated Process calculate OOB coefficients
U-the acceleration process calculates the OOB offset, Q, U, which can be measured.
the eccentricity V of the roller when the roller rotates one circle in the acceleration process is obtained by the formula (12)doob。
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method for rapidly detecting the eccentricity of a washing machine is characterized by comprising the following steps:
Firstly, accelerating a motor to drive a roller to rotate, wherein the acceleration value of the motor is a;
Secondly, sampling and recording the actual rotating speed of the motor, and calculating the theoretical rotating speed of the motor;
thirdly, comparing the actual rotating speed of the motor with the theoretical rotating speed to obtain a rotating speed fluctuation value;
Fourthly, the motor drives the roller to rotate at least one circle to obtain a plurality of rotating speed fluctuation values;
fifthly, screening out a maximum rotating speed fluctuation value and a minimum rotating speed fluctuation value;
and sixthly, calculating the fluctuation deviation value of the rotating speed of the motor in the process of accelerating the rotation of the motor-driven roller according to the maximum rotating speed fluctuation value and the minimum rotating speed fluctuation value, and further realizing the purpose of obtaining the eccentricity of the roller in the process of accelerating the roller.
2. the method for rapidly detecting the eccentricity of a washing machine as claimed in claim 1,
the rotating speed fluctuation value is the difference value between the actual rotating speed and the theoretical rotating speed of the motor at the same moment and at the same sampling point.
3. the method for rapidly detecting the eccentricity of a washing machine as claimed in claim 1,
because the weight of the load can influence the acceleration of the roller in different angles of the roller, the following calculation formula is obtained according to the relationship between the rotating speed of the motor and the acceleration and the eccentricity:
ωm(k)＝ωm(k-1)+α*ΔT+ρ*Voob(k-1)
ωm(k) -the current motor speed;
ωm(k-1) -last sampled motor speed;
k is the number of samples;
α -acceleration;
Δ T — the time it takes for the washing machine drum to rotate through a fixed angle θ of 360/L;
L is the number of sampling points of one circle of the roller;
Rho is the influence coefficient of eccentricity on the motor speed at the current angle;
Voob(k-1) -the previous eccentricity value of the cylinder;
Theta-the angle the washing machine drum has rotated through.
4. The method for rapidly detecting the eccentricity of a washing machine as claimed in claim 3,
At the beginning of the rotation of the drum, the eccentricity of the drum is zero, i.e. Voob＝0；
Therefore, the calculation formula of the theoretical rotating speed of the motor is as follows:
ωm(k)＝ωm(k-1)+α*ΔT。
5. The method for rapidly detecting the eccentricity of a washing machine as claimed in claim 4,
when the drum makes one revolution, i.e. 360 deg. from the starting position, at theta e (0, 180), i.e. when the eccentric load runs from the lowest point to the highest point,
ωn(k)＜ωm(0)+α*k*ΔT，θ∈(0，180)
ωm(k) Is the actual rotational speed of the motor,
ωm(0) + α k Δ T is the theoretical rotational speed of the motor;
and when the eccentricity exceeds an angle of 180 degrees, the downward fall is as follows:
ωm(n)＞ωm(180)+α*(n-k)*ΔT，θ∈(180，360)
ωm(n) is the actual rotational speed of the motor,
ωm(180) + α (n-k) Δ T is the theoretical rotational speed of the motor,
And n is the accumulated sampling times.
6. the method for rapidly detecting the eccentricity of a washing machine as claimed in claim 5,
calculating a rotating speed fluctuation value in each sampling period through a maximum value judgment function and a minimum value judgment function: further obtaining the maximum rotating speed fluctuation value and the minimum rotating speed fluctuation value of the motor in one rotation of the washing machine drum
ωmax＝Max(ωn(k)-α*k*ΔT)
ωmin＝Min(ωm(k)-α*k*ΔT)
max () -maximum decision function, the logic is as follows:
If (ω)max＜ωm(k)-α*k*Δ)
then ωmax＝ωm(k)-α*k*ΔT
min () -minimum decision function, the logic is as follows:
If (ω)min＞ωm(k)-α*k*ΔT)
then ωmin＝ωm(k)-α*k*ΔT。
7. The method for rapidly detecting the eccentricity of a washing machine as claimed in claim 6,
In the acceleration process, the magnitude of the eccentric quantity is calculated through the fluctuation deviation value of the rotating speed;
when theta rotates to 360 degrees, the theta is converted into the angle of the
Δω＝ωmmax-ωmin
Calculating the maximum fluctuation deviation value of the rotating speed;
the eccentricity calculation formula of the acceleration process is expressed as follows:
Vdoob＝Q*Δω+U
Vdoob-the acceleration process calculates the OOB value, i.e. the eccentricity;
q-the acceleration process calculates OOB, the coefficient of eccentricity;
U-the acceleration process calculates the offset of the OOB,
thereby obtaining the eccentricity V when rotating for one circle in the acceleration processdoob。
8. The method for rapidly detecting the eccentricity of a washing machine as claimed in any one of claims 1 to 9, wherein the rotation speed ω of the drum is controlled by a predetermined valuedrumThe conversion relation with the motor rotating speed is as follows:
ωm-the motor speed;
ωdrum＝ωm/Belt；
belt-transfer ratio of the washing machine.
9. the method for rapidly detecting the eccentricity of a washing machine as claimed in claim 8,
when the washing machine is started, the motor operates to drive the washing machine drum to rotate, the angle of the drum is accumulated, and the calculation formula is as follows because the angle of the motor and the angle of the washing machine drum have a proportional relation:
Dθ-the angle of the drum;
Dθo-initial angle of the drum;
Mθ-the motor rotation angle.
10. the method for rapidly detecting the eccentricity of a washing machine as claimed in claim 9,
If the calculated eccentricity is larger than a set threshold value, stopping and restarting; if the eccentricity is smaller than the set threshold value, the next action can be directly carried out, and the time is saved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910901920.3A CN110578229A (en) | 2019-09-23 | 2019-09-23 | method for rapidly detecting eccentricity of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910901920.3A CN110578229A (en) | 2019-09-23 | 2019-09-23 | method for rapidly detecting eccentricity of washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110578229A true CN110578229A (en) | 2019-12-17 |
Family
ID=68813412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910901920.3A Pending CN110578229A (en) | 2019-09-23 | 2019-09-23 | method for rapidly detecting eccentricity of washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110578229A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265835A (en) * | 2021-05-27 | 2021-08-17 | 海信（山东）冰箱有限公司 | Washing machine dehydration control method and device and washing machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548612A (en) * | 2003-05-13 | 2004-11-24 | 乐金电子(天津)电器有限公司 | Eccentricity detecting method for tumble washer |
| CN105088661A (en) * | 2015-06-30 | 2015-11-25 | 无锡小天鹅股份有限公司 | Eccentricity detection method of roller washing machine |
| CN105986399A (en) * | 2015-03-05 | 2016-10-05 | 无锡小天鹅股份有限公司 | Washing machine and method for judging washing machine load eccentricity |
| US20180148877A1 (en) * | 2015-03-27 | 2018-05-31 | Qingdao Haier Drum Washing Machine Co., Ltd. | Control method of washing machine and washing machine |
-
2019
- 2019-09-23 CN CN201910901920.3A patent/CN110578229A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548612A (en) * | 2003-05-13 | 2004-11-24 | 乐金电子(天津)电器有限公司 | Eccentricity detecting method for tumble washer |
| CN105986399A (en) * | 2015-03-05 | 2016-10-05 | 无锡小天鹅股份有限公司 | Washing machine and method for judging washing machine load eccentricity |
| CN105986399B (en) * | 2015-03-05 | 2018-03-16 | 无锡小天鹅股份有限公司 | Washing machine and the method for judging washing machine load bias |
| US20180148877A1 (en) * | 2015-03-27 | 2018-05-31 | Qingdao Haier Drum Washing Machine Co., Ltd. | Control method of washing machine and washing machine |
| CN105088661A (en) * | 2015-06-30 | 2015-11-25 | 无锡小天鹅股份有限公司 | Eccentricity detection method of roller washing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265835A (en) * | 2021-05-27 | 2021-08-17 | 海信（山东）冰箱有限公司 | Washing machine dehydration control method and device and washing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101407959B1 (en) | Drum type washing machine having ball balancer and controlling method of the same of | |
| CN108755009B (en) | Operation control method, system, device and storage medium for clothes processing device | |
| CN105200711B (en) | A kind of washing machine unbalance detection and washing machine | |
| KR101085496B1 (en) | Washing machine and method for calculating a quantity of laundry | |
| JP4481503B2 (en) | Method and apparatus for detecting an imbalance in a washing tub | |
| EP1610144A2 (en) | Method for calibrating offset from DC bus | |
| KR20090013354A (en) | Method for controlling of drum-type washing device | |
| CN1821477A (en) | Drum type washing machine and method of detecting laundry weight thereof | |
| JP7061754B2 (en) | Washing machine | |
| CN110578229A (en) | method for rapidly detecting eccentricity of washing machine | |
| JP2004130059A (en) | Spin-drying operation controlling method for drum type washing machine | |
| CN105200709B (en) | A kind of washing machine dehydration procedure control method and washing machine | |
| US20140007680A1 (en) | Method for determining imbalance in drum washing machine | |
| WO2017020164A1 (en) | Roller washing machine and unbalance detection method and device thereof | |
| EP1461487B1 (en) | Method for determining unbalanced load | |
| CN111101327A (en) | Method and device for detecting tub collision of clothes treatment device and clothes treatment device | |
| CN110872761B (en) | Eccentricity detection method for drum washing machine | |
| KR100892454B1 (en) | Controlling method for drum washer | |
| KR101309295B1 (en) | Drum Washing machine | |
| KR101447148B1 (en) | Washing machine and control method thereof | |
| KR100794594B1 (en) | Drum washing machine and its Control Method | |
| JP2607760B2 (en) | Drum type washing machine | |
| CN112626796B (en) | Control method and device of washing machine, washing machine and computer readable storage medium | |
| US20220341077A1 (en) | Wash article entrapment detection for laundry washing machines | |
| CN111519391B (en) | Control method of washing machine and washing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191217 |
|
| RJ01 | Rejection of invention patent application after publication |