CN108978116B - Drum washing machine and eccentricity detection control method and system during dehydration of drum washing machine - Google Patents
Drum washing machine and eccentricity detection control method and system during dehydration of drum washing machine Download PDFInfo
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- CN108978116B CN108978116B CN201710415421.4A CN201710415421A CN108978116B CN 108978116 B CN108978116 B CN 108978116B CN 201710415421 A CN201710415421 A CN 201710415421A CN 108978116 B CN108978116 B CN 108978116B
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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 discloses a drum washing machine and an eccentricity detection control method and system during dehydration thereof, wherein the method comprises the following steps: 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. The invention also provides a non-transitory computer readable storage medium.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to an eccentricity detection control method during dehydration of a drum washing machine, a non-transitory computer readable storage medium, an eccentricity detection control system during dehydration of the drum washing machine and the drum washing machine.
Background
Because the inside of the drum washing machine is a multi-degree-of-freedom suspension system, the clothes are unevenly distributed and eccentric during dehydration, the internal system is in a multi-direction swinging state, the larger the eccentricity is, the higher the running rotating speed is, the larger the swinging is, and the higher the risk that a dehydration barrel of the drum washing machine impacts a box shell is. In order to ensure the safe operation of the dehydration of the drum washing machine, most of the existing drum washing machines have an eccentricity detection function, but the eccentricity detection function is generally realized under a low-speed steady state, the method is influenced by the load amount, the eccentricity cannot be accurately positioned, once the low-speed detection is finished, the secondary detection judgment cannot be carried out under an acceleration state, and the risk that the dehydration barrel impacts a box shell exists.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first objective of the present invention is to provide an eccentricity detection control method during dehydration of a drum washing machine, according to which the impact of a dehydration barrel during accelerated dehydration can be reduced or avoided, and the user experience can be improved.
A second object of the invention is to propose a non-transitory computer-readable storage medium.
The third purpose of the invention is to provide an eccentricity detection control system when the drum washing machine dehydrates.
A fourth object of the present invention is to provide a drum washing machine.
To achieve the above object, an eccentricity detection control method in a drum washing machine including a dehydration motor and a dehydration tub according to an embodiment of a first aspect of the present invention includes the steps of: when the drum washing machine executes a dehydration program, controlling the dehydration motor to perform accelerated operation at a first acceleration until the rotation speed of the dehydration motor reaches a first rotation speed, controlling the dehydration motor to maintain the first rotation speed to operate, and controlling the dehydration motor to perform accelerated operation at a second acceleration after a first time until the rotation speed of the dehydration motor reaches a second rotation speed, wherein the second rotation speed is greater than the first rotation speed; detecting the rotating speed of the dewatering barrel in the first time, acquiring the maximum rotating speed and the minimum rotating speed of the dewatering barrel in the first time, and calculating 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 the dehydration motor when the dehydration motor rises from the first rotating speed to a preset rotating speed, wherein the preset rotating speed is less than or equal to the second rotating speed; and judging the eccentricity condition of the drum washing machine in the dehydration process according to the rotation speed difference value and the accumulated input power, and controlling the dehydration motor according to the eccentricity condition.
According to the eccentricity detection control method during dehydration of the drum washing machine, when the drum washing machine executes a dehydration program, the rotating speed of the dehydration motor in the first time when the dehydration motor runs at the first rotating speed is detected, the rotating speed difference value between the maximum rotating speed and the minimum rotating speed of the dehydration motor in the first time is obtained, the accumulated input power of the dehydration motor is obtained when the dehydration motor is accelerated to the preset rotating speed at the second acceleration after the first time, the eccentricity condition of the drum washing machine in the dehydration process is judged according to the rotating speed difference value and the accumulated input power, and the dehydration motor is controlled according to the eccentricity condition, so that the impact of the dehydration motor on a box shell of the drum washing machine during accelerated dehydration is reduced or avoided while the eccentricity detection of the drum washing machine during accelerated dehydration is realized, and the use experience of a user on the drum washing machine can be further realized.
In addition, the eccentricity detection control method in the dehydration of the drum washing machine according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the invention, when the difference value of the rotating speeds is greater than or equal to a first preset value, the eccentricity of the drum washing machine in the dehydration process is judged to be greater than a preset safe eccentricity, and the dehydration motor is controlled to stop running; and when the rotating speed difference value is smaller than the first preset value, judging the eccentricity condition of the drum washing machine in the dehydration process according to the accumulated input power.
According to an embodiment of the present invention, when the rotation speed difference is less than the first preset value and greater than or equal to a second preset value, wherein if the accumulated input power is greater than a first preset power, it is determined that the eccentricity of the drum washing machine during the dehydration process is greater than a preset safe eccentricity, and the dehydration motor is controlled to stop operating; and if the accumulated input power is less than or equal to a first preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate.
According to an embodiment of the present invention, when the rotation speed difference is less than a second preset value and greater than or equal to a third preset value, wherein if the accumulated input power is greater than a second preset power, it is determined that the eccentricity of the drum washing machine during the dehydration process is greater than a preset safe eccentricity, and the dehydration motor is controlled to stop operating, wherein the second preset power is greater than a first preset power; and if the accumulated input power is less than or equal to the second preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate.
According to an embodiment of the present invention, when the difference value of the rotation speeds is less than a third preset value, it is determined that the eccentricity of the drum washing machine during the dehydration process is less than or equal to a preset safe eccentricity, and the dehydration motor is controlled to continue to operate.
Further, the present invention proposes a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described embodiment of eccentricity detection control method at the time of dehydration of a drum washing machine.
In order to achieve the above object, a third embodiment of the present invention provides an eccentricity detection control system for a drum washing machine during dehydration, the drum washing machine including a dehydration motor and a dehydration tub, the system including a control module, a detection module, a first acquisition module and a second acquisition module, wherein the control module is configured to control the dehydration motor to perform an acceleration operation at a first acceleration when a dehydration program is executed until a rotation speed of the dehydration motor reaches a first rotation speed, control the dehydration motor to maintain the first rotation speed operation, and control the dehydration motor to perform an acceleration operation at a second acceleration after a first time until the rotation speed of the dehydration motor reaches a second rotation speed, where the second rotation speed is greater than the first rotation speed; the detection module is used for detecting the rotating speed of the dewatering barrel in the first time; the first obtaining module is used for obtaining the maximum rotating speed and the minimum rotating speed of the dewatering barrel in the first time and calculating the rotating speed difference value between the maximum rotating speed and the minimum rotating speed of the dewatering barrel in the first time; the second acquisition module is used for acquiring the accumulated input power of the dehydration motor when the dehydration motor rises from the first rotating speed to a preset rotating speed, wherein the preset rotating speed is less than or equal to the second rotating speed; the control module is further used for judging the eccentricity condition of the drum washing machine in the dehydration process according to the rotating speed difference value and the accumulated input power, and controlling the dehydration motor according to the eccentricity condition.
According to the eccentricity detection control system during dehydration of the drum washing machine, when the drum washing machine executes a dehydration program, the detection module detects the rotating speed of the dehydration motor in a first time when the dehydration motor runs at a first rotating speed, the first acquisition module acquires the rotating speed difference value between the maximum rotating speed and the minimum rotating speed of the dehydration barrel in the first time, the second acquisition module acquires the accumulated input power of the dehydration motor when the dehydration motor is accelerated to a preset rotating speed at a second acceleration after the first time, the control module judges the eccentricity condition of the drum washing machine during dehydration according to the rotating speed difference value and the accumulated input power and controls the dehydration motor according to the eccentricity condition, so that the eccentricity detection of the drum washing machine during accelerated dehydration is realized, and the impact of the dehydration barrel on the shell of the drum washing machine during accelerated dehydration is reduced or avoided, thereby enabling the user to experience the use of the drum washing machine.
In addition, the eccentricity detection control system during the dehydration of the drum washing machine according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the invention, the control module is further configured to: when the rotating speed difference value is larger than or equal to a first preset value, judging that the eccentricity of the drum washing machine in the dehydration process is larger than a preset safe eccentricity, and controlling the dehydration motor to stop running; and when the rotating speed difference value is smaller than the first preset value, judging the eccentricity condition of the drum washing machine in the dehydration process according to the accumulated input power.
According to an embodiment of the present invention, when the rotation speed difference is smaller than the first preset value and greater than or equal to a second preset value, the control module is further configured to: when the accumulated input power is larger than a first preset power, judging that the eccentricity of the drum washing machine in the dehydration process is larger than a preset safe eccentricity, and controlling the dehydration motor to stop running; and when the accumulated input power is less than or equal to a first preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate.
According to an embodiment of the present invention, when the rotation speed difference is smaller than the second preset value and greater than or equal to a third preset value, the control module is further configured to: when the accumulated input power is larger than a second preset power, judging that the eccentricity of the drum washing machine in the dehydration process is larger than a preset safe eccentricity, and controlling the dehydration motor to stop running, wherein the second preset power is larger than the first preset power; and when the accumulated input power is less than or equal to the second preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate.
According to an embodiment of the present invention, the control module is further configured to: and when the rotating speed difference value is smaller than a third preset value, judging that the eccentricity of the drum washing machine in the dehydration process is smaller than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate.
Further, the invention provides a drum washing machine, which comprises the eccentricity detection control system in the dewatering process of the drum washing machine of the embodiment.
The drum washing machine of the embodiment of the invention adopts the eccentricity detection control system during dehydration of the drum washing machine of the embodiment, when the drum washing machine executes a dehydration program, the detection module detects the rotating speed of the dehydration motor in a first time when the dehydration motor runs at a first rotating speed, the first acquisition module acquires the rotating speed difference value between the maximum rotating speed and the minimum rotating speed of the dehydration motor in the first time, the second acquisition module acquires the accumulated input power of the dehydration motor when the dehydration motor is accelerated to a preset rotating speed at a second acceleration after the first time, the control module judges the eccentricity condition of the drum washing machine during the dehydration process according to the rotating speed difference value and the accumulated input power and controls the dehydration motor according to the eccentricity condition, thereby reducing or avoiding the impact of the dehydration barrel on the shell of the drum washing machine during the accelerated dehydration process while realizing the eccentricity detection of the drum washing machine during the accelerated dehydration process, thereby enabling the user to experience the use of the drum washing machine.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flowchart of an eccentricity detection control method in a dehydration of a drum washing machine according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a dehydration procedure according to one embodiment of the present invention;
FIG. 3 is a schematic view illustrating a fluctuation of a rotation speed of a dehydration tub according to an embodiment of the present invention;
FIG. 4 is a block diagram of an eccentricity detection control system in a dehydration operation of the drum washing machine according to an embodiment of the present invention; and
fig. 5 is a block diagram of a drum washing machine according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes an eccentricity detection control method and system and a drum washing machine in dehydration according to an embodiment of the present invention with reference to the accompanying drawings.
Fig. 1 is a flowchart of an eccentricity detection control method in a spin-drying operation of a drum washing machine according to an embodiment of the present invention.
In an embodiment of the present invention, a drum washing machine includes a dehydration motor and a dehydration tub.
As shown in fig. 1, the eccentricity detection control method in the dehydration of the drum washing machine comprises the following steps:
s101, when the drum washing machine executes a dehydration program, controlling a dehydration motor to accelerate at a first acceleration, controlling the dehydration motor to maintain the first rotation speed after the rotation speed of the dehydration motor reaches the first rotation speed, and controlling the dehydration motor to accelerate at a second acceleration after the first time until the rotation speed of the dehydration motor reaches the second rotation speed.
The second rotating speed n2 is greater than the first rotating speed n1, namely n1 < n 2.
Optionally, n1 is a low speed, and the value range thereof may be 50 to 150 revolutions, for example, 100 revolutions/minute; n2 is a high speed, and can range from 800 to 1200 rpm, for example, 1000 rpm. The first time t1 may take a value of 3-7 seconds, such as 5 seconds.
In one embodiment of the present invention, as shown in fig. 2, the spin-drying process of the drum washing machine may be divided into two stages: the method comprises the following steps that (1) the dewatering motor is controlled to run at a first acceleration a1 in an accelerated mode until the rotating speed of the dewatering motor reaches a first rotating speed n1, and then the dewatering motor is controlled to run at the first rotating speed for a first time t 1; and 2, controlling the dewatering motor to accelerate at a second acceleration a2 after the first time t1 until the rotating speed of the dewatering motor reaches a second rotating speed n2, and controlling the dewatering motor to operate at a second rotating speed n2 until the dewatering stop time. It can be understood that, in the phase 1, the process that the dehydration motor operates at the first rotation speed n1 can be regarded that the drum washing machine is in the dehydration steady state.
Here, the relationship between the first acceleration a1 and the second acceleration a2 may not be limited, that is, a1 may be greater than, equal to, or less than a 2.
S102, detecting the rotating speed of the dewatering barrel in the first time, acquiring the maximum rotating speed and the minimum rotating speed of the dewatering barrel in the first time, and calculating the rotating speed difference value between the maximum rotating speed and the minimum rotating speed of the dewatering barrel in the first time.
It should be noted that the rotation speed of the dewatering tub is not equal to the rotation speed of the dewatering motor, and when the rotation speed of the dewatering motor is constant (not locked), the rotation speed of the dewatering tub may fluctuate around the rotation speed of the dewatering motor, as shown in fig. 3, that is, the rotation speed of the dewatering tub is not constant during the first time t1, and there are a maximum rotation speed and a minimum rotation speed.
In addition, the rotation speed of the dewatering drum is related to the load in the dewatering drum, and generally speaking, the larger the load is, the smaller the rotation speed of the dewatering drum is when the rotation speed of the dewatering motor is constant.
S103, acquiring the accumulated input power of the dehydration motor when the first rotating speed is increased to the preset rotating speed.
The preset rotating speed n is less than or equal to the second rotating speed n2, namely n is less than or equal to n 2.
Optionally, n is a high speed, and a value range of n may be 700-1000 rpm, for example, 900 rpm.
Specifically, as shown in fig. 2, in the phase 2, during the operation of controlling the dewatering motor to accelerate at the second acceleration, a preset rotation speed n is taken, and the accumulated input power P of the dewatering motor when the first rotation speed n1 is increased to the preset rotation speed n is obtained.
And S104, judging the eccentricity of the drum washing machine in the dehydration process according to the rotation speed difference and the accumulated input power, and controlling the dehydration motor according to the eccentricity.
In the embodiment of the present invention, if it is determined that the eccentricity of the drum washing machine during the dehydration process is within the preset safe eccentricity range according to the rotation speed difference and the accumulated input power, the dehydration motor may be controlled to execute the dehydration process shown in fig. 2, i.e., the dehydration motor is controlled to finally accelerate to the second rotation speed n2 for operation. If the eccentricity is judged to exceed the preset safe eccentricity range according to the rotating speed difference or the accumulated input power, the dehydration motor can be controlled to stop rotating so as to reduce or avoid the impact of the dehydration barrel and facilitate the user to adjust the load stress condition in the dehydration barrel.
Optionally, the preset safety eccentricity is provided for reducing or avoiding the impact of the dehydration tub on the cabinet of the drum washing machine, which may be obtained empirically, obtained through experimentation, or customized.
Specifically, as shown in fig. 2, when the drum washing machine performs a spin-drying process, the spin-drying motor is controlled to perform an acceleration operation at a first acceleration a1, and after the rotation speed of the spin-drying motor reaches a first rotation speed n1, the spin-drying motor is controlled to maintain the first rotation speed n1 for a first time t 1. The rotating speed of the dewatering barrel in the first time t1 is detected, the maximum rotating speed Vmax and the minimum rotating speed Vmin of the dewatering barrel in the first time t1 are obtained, referring to fig. 3, the rotating speed difference delta V between the maximum rotating speed Vmax and the minimum rotating speed Vmin of the dewatering barrel in the first time t1 is calculated to be Vmax-Vmin, and then the eccentricity condition of the drum washing machine in the dewatering process can be judged according to the rotating speed difference delta V.
If the eccentricity of the drum washing machine in the dehydration process is judged to be larger than the preset safe eccentricity B, the dehydration motor can be controlled to stop running so as to reduce or avoid the impact of the dehydration barrel and facilitate the user to adjust the load stress condition in the dehydration barrel. If the eccentricity of the drum washing machine in the dehydration process is judged to be less than or equal to the preset safe eccentricity B, the dehydration motor can be controlled to accelerate at the second acceleration a2 after the first time t1, when the rotation speed of the dehydration motor reaches the preset rotation speed n, the accumulated input power P of the dehydration motor is obtained when the rotation speed of the dehydration motor rises from the first rotation speed n1 to the preset rotation speed n, and then the eccentricity condition of the drum washing machine in the dehydration process is judged according to the accumulated input power P.
If the eccentricity of the drum washing machine in the dehydration process is judged to be larger than the preset safe eccentricity B, the dehydration motor can be controlled to stop running so as to reduce or avoid the impact of the dehydration barrel and facilitate the user to adjust the load stress condition in the dehydration barrel. If the eccentricity of the drum washing machine in the dehydration process is judged to be less than or equal to the preset safe eccentricity B, the dehydration motor can be controlled to continuously accelerate at the second acceleration a2 until the rotation speed of the dehydration motor reaches the second rotation speed n2, thereby completing a complete dehydration program.
It should be noted that after controlling the dehydration motor to stop running and adjusting the load stress, the washing machine may be controlled to perform the dehydration process shown in fig. 2 from the beginning.
In one example of the present invention, when the rotation speed difference Δ V is greater than or equal to a first preset value, it is determined that the eccentricity of the drum washing machine during the dehydration process is greater than a preset safe eccentricity B, and the dehydration motor is controlled to stop operating; and when the rotating speed difference value delta V is smaller than a first preset value, judging the eccentricity condition of the drum washing machine in the dehydration process according to the accumulated input power P.
In a second example of the present invention, when the rotation speed difference Δ V is less than a first preset value and greater than or equal to a second preset value, wherein if the accumulated input power P is greater than the first preset power, it is determined that the eccentricity of the drum washing machine during the dehydration process is greater than a preset safe eccentricity B, and the dehydration motor is controlled to stop operating; if the accumulated input power P is less than or equal to the first preset power, the eccentricity of the drum washing machine in the dehydration process is judged to be less than or equal to the preset safe eccentricity B, the dehydration motor is controlled to continue to operate, namely the dehydration motor is controlled to continue to operate at the second acceleration a2 in an accelerated mode until the rotation speed of the dehydration motor reaches the second rotation speed n2, and then the dehydration motor can be controlled to operate at the second rotation speed n2 until the dehydration stopping time.
In a third example of the present invention, when the rotation speed difference Δ V is less than the second preset value and greater than or equal to a third preset value, wherein if the accumulated input power P is greater than the second preset power, it is determined that the eccentricity of the drum washing machine during the dehydration process is greater than a preset safe eccentricity B, and the dehydration motor is controlled to stop operating, wherein the second preset power is greater than the first preset power; if the accumulated input power P is less than or equal to the second preset power, the eccentricity of the drum washing machine in the dehydration process is judged to be less than or equal to the preset safe eccentricity B, the dehydration motor is controlled to continue to operate, namely the dehydration motor is controlled to continue to operate at the second acceleration a2 in an accelerated mode until the rotation speed of the dehydration motor reaches the second rotation speed n2, and then the dehydration motor can be controlled to operate at the second rotation speed n2 until the dehydration stopping time.
In a fourth example of the present invention, when the rotation speed difference Δ V is less than the third preset value, it is determined that the eccentricity B of the drum washing machine during the dehydration process is less than or equal to the preset safe eccentricity B, and the dehydration motor is controlled to continue to operate, that is, the dehydration motor is controlled to continue to operate at the second acceleration a2 until the rotation speed of the dehydration motor reaches the second rotation speed n2, and then the dehydration motor may be controlled to operate at the second rotation speed n2 until the dehydration deadline.
Optionally, the first preset value, the second preset value, the third preset value, the first preset power and the second preset power of the parameter may be set according to an empirical value, may also be obtained according to an experiment, or may also be set by a user through definition.
For example, when the above parameters are obtained experimentally, three different amounts of load are selected, the loads being marked by weight as L1, L2, L3. L1 < L2 < L3. Within a preset safe eccentric amount B range, the maximum rotating speed and the minimum rotating speed of different loads L1, L2 and L3 within a first time t1 shown in FIG. 2 are respectively detected, and corresponding rotating speed differences Δ V1, Δ V2 and Δ V3 are calculated, wherein Δ V1 is larger than Δ V2 and Δ V3 are larger than Δ V3538.
Further, a preset rotating speed n is selected from the first rotating speed n1 and the second rotating speed n2 in the stage 2, and accumulated input powers P1, P2 and P3 of the dewatering motors in the process that the dewatering motors with different loads L1, L2 and L3 accelerate from n1 to n are detected respectively, wherein P1 is more than P2 and more than P3.
It should be noted that, in order to reduce the error, a plurality of experiments may be performed for each load.
In some embodiments of the present invention, the eccentricity detection control process for the drum washing machine during dehydration is as follows:
and when the detected rotation speed difference delta V at the rotation speed n1 in the stage 1 meets the condition that delta V is more than or equal to delta V1, controlling the dehydration motor to stop running.
When the speed difference delta V detected under the rotation speed n1 in the stage 1 meets the condition that delta V2 is more than or equal to delta V and is less than delta V1, controlling the dehydration motor to enter the stage 2, detecting the accumulated input power P of the dehydration motor in the process of accelerating from the rotation speed n1 to the rotation speed n, and controlling the dehydration motor to continuously run to finish the stage 2 when P is more than or equal to P1; and when P is less than P1, controlling the dehydration motor to stop running.
When the speed difference delta V detected under the rotation speed n1 in the stage 1 meets the condition that delta V3 is more than or equal to delta V and is less than delta V2, controlling the dehydration motor to enter the stage 2, detecting the accumulated input power P of the dehydration motor in the process of accelerating from the rotation speed n1 to the rotation speed n, and controlling the dehydration motor to continuously run to finish the stage 2 when P is more than or equal to P2; and when P is less than P2, controlling the dehydration motor to stop running.
And when the detected speed difference delta V at the stage 1 speed n1 meets the condition that delta V is less than delta V3, controlling the dewatering motor to directly enter and complete the stage 2.
In summary, according to the eccentricity detection control method of the drum washing machine during dehydration of the present invention, when the drum washing machine performs the dehydration process, the rotation speed of the dehydration motor is detected within a first time period when the dehydration motor operates at a first rotation speed, and obtaining the rotation speed difference value between the maximum rotation speed and the minimum rotation speed of the dehydration barrel in the first time, and obtaining the accumulated input power of the dehydration motor when the dehydration motor is accelerated to the preset rotation speed at the second acceleration after the first time, and then the eccentricity of the drum washing machine in the dehydration process is judged according to the difference value of the rotating speed and the accumulated input power, and the dehydration motor is controlled according to the eccentricity, therefore, when realizing that drum type washing machine accelerates the eccentric detection of dehydration in-process, reduce or avoided the striking of dewatering barrel to drum type washing machine case shell when accelerateing the dehydration, and then can the user experience drum type washing machine's use.
It should be added that in the embodiment of the present disclosure, only three preset values, i.e., the first preset value, the second preset value, and the third preset value, and two preset powers, i.e., the first preset power and the second preset power, are taken as an example to exemplify the determination threshold of the rotational speed difference and the accumulated input power, as another possible implementation manner, the present disclosure may further include the situations of four preset values, three preset powers, five preset values, four preset powers, and the like, and the specific process of the eccentricity detection control method is shown in the above three preset embodiments, and is not described herein again.
Further, the present invention proposes a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described embodiment of eccentricity detection control method at the time of dehydration of a drum washing machine.
Fig. 4 is a block diagram of an eccentricity detection control system in the dehydration of the drum washing machine according to an embodiment of the present invention.
In an embodiment of the present invention, a drum washing machine includes a dehydration motor and a dehydration tub.
As shown in fig. 4, the eccentricity detection control system during dehydration of the drum washing machine includes a control module 10, a detection module 20, a first obtaining module 30 and a second obtaining module 40.
The control module 10 is configured to control the dehydration motor to perform accelerated operation at a first acceleration when executing the dehydration program, control the dehydration motor to maintain the first rotation speed after the rotation speed of the dehydration motor reaches the first rotation speed, and control 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, where the second rotation speed is greater than the first rotation speed. The detection module 20 is used for detecting the rotation speed of the dewatering barrel in the first time. The first obtaining module 30 is configured to obtain a maximum rotation speed and a minimum rotation speed of the spin-drying tub in a first time, and calculate a rotation speed difference between the maximum rotation speed and the minimum rotation speed of the spin-drying tub in the first time. The second obtaining module 40 is configured to obtain an accumulated input power of the dewatering motor when the dewatering motor increases from the first rotation speed to a preset rotation speed, where the preset rotation speed is less than or equal to the second rotation speed. The control module 10 is further configured to determine an eccentricity of the drum washing machine during the dewatering process according to the rotation speed difference and the accumulated input power, and control the dewatering motor according to the eccentricity.
Specifically, as shown in fig. 2, when the drum washing machine performs the spin-drying process, the control module 10 controls the spin-drying motor to perform the acceleration operation at the first acceleration a1, and controls the spin-drying motor to maintain the first rotation speed n1 for the first time t1 after the rotation speed of the spin-drying motor reaches the first rotation speed n 1. The detection module 20 detects the rotation speed of the spin-drying tub within the first time t1, the first obtaining module 30 obtains the maximum rotation speed Vmax and the minimum rotation speed Vmin of the spin-drying tub within the first time t1, referring to fig. 3, the rotation speed difference Δ V between the maximum rotation speed Vmax and the minimum rotation speed Vmin of the spin-drying tub within the first time t1 is calculated to be Vmax-Vmin, and the control module 10 can judge the eccentricity of the drum washing machine in the spin-drying process according to the rotation speed difference Δ V.
If the eccentricity of the drum washing machine in the dehydration process is judged to be greater than the preset safe eccentricity B, the control module 10 can control the dehydration motor to stop running so as to reduce or avoid the impact of the dehydration barrel and facilitate the user to adjust the load stress condition in the dehydration barrel. If it is determined that the eccentricity of the drum washing machine in the dehydration process is less than or equal to the preset safe eccentricity B, the control module 10 may control the dehydration motor to perform acceleration operation at the second acceleration a2 after the first time t1, when the rotation speed of the dehydration motor reaches the preset rotation speed n, the second obtaining module 40 obtains the accumulated input power P when the dehydration motor rises from the first rotation speed n1 to the preset rotation speed n, and the control module 10 determines the eccentricity of the drum washing machine in the dehydration process according to the accumulated input power P.
If the eccentricity of the drum washing machine in the dehydration process is judged to be greater than the preset safe eccentricity B, the control module 10 can control the dehydration motor to stop running so as to reduce or avoid the impact of the dehydration barrel and facilitate the user to adjust the load stress condition in the dehydration barrel. If the eccentricity of the drum washing machine in the dehydration process is judged to be less than or equal to the preset safe eccentricity B, the control module 10 may control the dehydration motor to continue to perform the acceleration operation at the second acceleration a2 until the rotation speed of the dehydration motor reaches the second rotation speed n2, thereby completing a complete dehydration process.
It should be noted that after controlling the dehydration motor to stop running and adjusting the load force, the control module 10 can control the washing machine to perform the dehydration procedure shown in fig. 2 from the beginning.
In the first example of the present invention, the control module 10 may be further configured to determine that the eccentricity of the drum washing machine during the dehydration process is greater than a preset safe eccentricity and control the dehydration motor to stop operating when the difference between the rotation speeds is greater than or equal to a first preset value; and when the rotating speed difference value is smaller than a first preset value, judging the eccentricity condition of the drum washing machine in the dehydration process according to the accumulated input power.
In the second example of the present invention, when the rotation speed difference is less than the first preset value and greater than or equal to the second preset value, the control module 10 may be further configured to determine that the eccentricity of the drum washing machine during the dehydration process is greater than the preset safe eccentricity and control the dehydration motor to stop operating when the accumulated input power is greater than the first preset power; and when the accumulated input power is less than or equal to the first preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to the preset safe eccentricity, and controlling the dehydration motor to continue to operate.
In a third example of the present invention, when the rotation speed difference is less than the second preset value and greater than or equal to a third preset value, the control module 10 may be further configured to determine that the eccentricity of the drum washing machine during the dehydration process is greater than a preset safe eccentricity and control the dehydration motor to stop operating when the accumulated input power is greater than a second preset power, wherein the second preset power is greater than the first preset power; and when the accumulated input power is less than or equal to the second preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to the preset safe eccentricity, and controlling the dehydration motor to continue to operate.
In a fourth example of the present invention, the control module 10 may be further configured to determine that the eccentricity of the drum washing machine during the dehydration process is less than or equal to a preset safe eccentricity and control the dehydration motor to continue to operate when the difference between the rotation speeds is less than a third preset value.
Optionally, the first preset value, the second preset value, the third preset value, the first preset power and the second preset power of the parameter may be set according to an empirical value, may also be obtained according to an experiment, or may also be set by a user through definition.
For example, when the above parameters are obtained experimentally, three different amounts of load are selected, the loads being marked by weight as L1, L2, L3. L1 < L2 < L3. Within a preset safe eccentric amount B range, the maximum rotating speed and the minimum rotating speed of different loads L1, L2 and L3 within a first time t1 shown in FIG. 2 are respectively detected, and corresponding rotating speed differences Δ V1, Δ V2 and Δ V3 are calculated, wherein Δ V1 is larger than Δ V2 and Δ V3 are larger than Δ V3538.
Further, a preset rotating speed n is selected from the first rotating speed n1 and the second rotating speed n2 in the stage 2, and accumulated input powers P1, P2 and P3 of the dewatering motors in the process that the dewatering motors with different loads L1, L2 and L3 accelerate from n1 to n are detected respectively, wherein P1 is more than P2 and more than P3.
It should be noted that, in order to reduce the error, a plurality of experiments may be performed for each load.
In some embodiments of the present invention, the eccentricity detection control process for the drum washing machine during dehydration is as follows:
and when the detected rotation speed difference delta V at the rotation speed n1 in the stage 1 meets the condition that delta V is more than or equal to delta V1, controlling the dehydration motor to stop running.
When the speed difference delta V detected under the rotation speed n1 in the stage 1 meets the condition that delta V2 is more than or equal to delta V and is less than delta V1, controlling the dehydration motor to enter the stage 2, detecting the accumulated input power P of the dehydration motor in the process of accelerating from the rotation speed n1 to the rotation speed n, and controlling the dehydration motor to continuously run to finish the stage 2 when P is more than or equal to P1; and when P is less than P1, controlling the dehydration motor to stop running.
When the speed difference delta V detected under the rotation speed n1 in the stage 1 meets the condition that delta V3 is more than or equal to delta V and is less than delta V2, controlling the dehydration motor to enter the stage 2, detecting the accumulated input power P of the dehydration motor in the process of accelerating from the rotation speed n1 to the rotation speed n, and controlling the dehydration motor to continuously run to finish the stage 2 when P is more than or equal to P2; and when P is less than P2, controlling the dehydration motor to stop running.
And when the detected speed difference delta V at the stage 1 speed n1 meets the condition that delta V is less than delta V3, controlling the dewatering motor to directly enter and complete the stage 2.
It should be noted that, for the specific implementation of the eccentricity detection control system during dehydration of the drum washing machine according to the embodiment of the present invention, reference may be made to the eccentricity detection control method during dehydration of the drum washing machine according to the above-mentioned embodiment, and details are not described herein for reducing redundancy.
In summary, according to the eccentricity detection control system for the drum washing machine during dehydration of the embodiment of the invention, when the drum washing machine executes a dehydration program, the detection module detects the rotation speed of the dehydration motor in a first time when the dehydration motor operates at a first rotation speed, the first obtaining module obtains the rotation speed difference between the maximum rotation speed and the minimum rotation speed of the dehydration barrel in the first time, and the second obtaining module obtains the accumulated input power of the dehydration motor when the dehydration motor accelerates to a preset rotation speed at a second acceleration after the first time, and then the control module judges the eccentricity of the drum washing machine during dehydration according to the rotation speed difference and the accumulated input power and controls the dehydration motor according to the eccentricity, thereby reducing or avoiding the impact of the dehydration barrel on the shell of the drum washing machine during acceleration of dehydration while realizing the eccentricity detection of the drum washing machine during acceleration of dehydration, thereby enabling the user to experience the use of the drum washing machine.
Fig. 5 is a block diagram of a drum washing machine according to an embodiment of the present invention. As shown in fig. 5, the drum washing machine 1000 includes the eccentricity detection control system 100 in the dehydration of the drum washing machine according to the above embodiment.
In an embodiment of the present invention, as shown in fig. 5, the drum washing machine 1000 includes a dehydration motor 200 and a dehydration tub 300.
The drum washing machine of the embodiment of the invention adopts the eccentricity detection control system during dehydration of the drum washing machine of the embodiment, when the drum washing machine executes a dehydration program, the detection module detects the rotating speed of the dehydration motor in a first time when the dehydration motor runs at a first rotating speed, the first acquisition module obtains the rotating speed difference value between the maximum rotating speed and the minimum rotating speed of the dehydration barrel in the first time, and when the dehydration motor is accelerated to a preset rotating speed at a second acceleration after the first time, the second acquisition module acquires the accumulated input power of the dehydration motor, the control module judges the eccentricity condition of the drum washing machine during the dehydration process according to the rotating speed difference value and the accumulated input power and controls the dehydration motor according to the eccentricity condition, thereby reducing or avoiding the impact of the dehydration barrel on the shell of the drum washing machine during the accelerated dehydration process of the drum washing machine while realizing the eccentricity detection during the accelerated dehydration of the drum washing machine, thereby enabling the user to experience the use of the drum washing machine.
In addition, other structures and functions of the drum washing machine according to the embodiment of the present invention are known to those skilled in the art, and are not described herein in detail in order to reduce redundancy.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
Each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (6)
1. An eccentricity detection control method for a drum washing machine during dehydration is characterized in that the drum washing machine comprises a dehydration motor and a dehydration barrel, and the method comprises the following steps:
when the drum washing machine executes a dehydration program, controlling the dehydration motor to perform accelerated operation at a first acceleration until the rotation speed of the dehydration motor reaches a first rotation speed, controlling the dehydration motor to maintain the first rotation speed to operate, and controlling the dehydration motor to perform accelerated operation at a second acceleration after a first time until the rotation speed of the dehydration motor reaches a second rotation speed, wherein the second rotation speed is greater than the first rotation speed;
detecting the rotating speed of the dewatering barrel in the first time, acquiring the maximum rotating speed and the minimum rotating speed of the dewatering barrel in the first time, and calculating 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 the dehydration motor when the dehydration motor rises from the first rotating speed to a preset rotating speed, wherein the preset rotating speed is less than or equal to the second rotating speed;
judging the eccentricity condition of the drum washing machine in the dehydration process according to the rotation speed difference value and the accumulated input power, and controlling the dehydration motor according to the eccentricity condition;
wherein, when the rotating speed difference value is more than or equal to a first preset value, the eccentricity of the drum washing machine in the dehydration process is judged to be more than the preset safe eccentricity, and the dehydration motor is controlled to stop running,
when the rotating speed difference value is smaller than the first preset value, judging the eccentricity condition of the drum washing machine in the dehydration process according to the accumulated input power;
when the rotating speed difference value is smaller than the first preset value and is larger than or equal to a second preset value, if the accumulated input power is larger than a first preset power, the eccentricity of the drum washing machine in the dehydration process is judged to be larger than a preset safe eccentricity, and the dehydration motor is controlled to stop running; if the accumulated input power is less than or equal to a first preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate;
when the rotating speed difference value is smaller than a second preset value and larger than or equal to a third preset value, if the accumulated input power is larger than a second preset power, judging that the eccentricity of the drum washing machine in the dehydration process is larger than a preset safe eccentricity, and controlling the dehydration motor to stop running, wherein the second preset power is larger than the first preset power;
and if the accumulated input power is less than or equal to the second preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate.
2. The method as claimed in claim 1, wherein when the rotation speed difference is less than a third preset value, the eccentricity of the drum washing machine during the dehydration process is determined to be less than or equal to a preset safe eccentricity, and the dehydration motor is controlled to continue to operate.
3. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the program, when executed by a processor, implements the eccentricity detection control method in dehydration of a drum washing machine according to claim 1 or 2.
4. An eccentricity detection control system for a drum washing machine during dehydration is characterized in that the drum washing machine comprises a dehydration motor and a dehydration barrel, the system comprises a control module, a detection module, a first acquisition module and a second acquisition module, wherein,
the control module is used for controlling the dehydration motor to perform accelerated operation at a first acceleration when a dehydration program is executed, controlling the dehydration motor to maintain the first rotation speed after the rotation speed of the dehydration motor reaches the first rotation speed, and controlling the dehydration motor to perform accelerated operation at a second acceleration after first time until the rotation speed of the dehydration motor reaches a second rotation speed, wherein the second rotation speed is greater than the first rotation speed;
the detection module is used for detecting the rotating speed of the dewatering barrel in the first time;
the first obtaining module is used for obtaining the maximum rotating speed and the minimum rotating speed of the dewatering barrel in the first time and calculating the rotating speed difference value between the maximum rotating speed and the minimum rotating speed of the dewatering barrel in the first time;
the second acquisition module is used for acquiring the accumulated input power of the dehydration motor when the dehydration motor rises from the first rotating speed to a preset rotating speed, wherein the preset rotating speed is less than or equal to the second rotating speed;
the control module is also used for judging the eccentricity condition of the drum washing machine in the dehydration process according to the rotating speed difference value and the accumulated input power and controlling the dehydration motor according to the eccentricity condition;
the control module is further configured to determine that the eccentricity of the drum washing machine in the dehydration process is greater than a preset safe eccentricity and control the dehydration motor to stop operating when the rotation speed difference is greater than or equal to a first preset value, and determine that the eccentricity of the drum washing machine in the dehydration process is greater than the preset safe eccentricity and control the dehydration motor to stop operating when the accumulated input power is greater than a first preset power when the rotation speed difference is less than the first preset value and greater than or equal to a second preset value; when the accumulated input power is less than or equal to a first preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate;
the control module is further configured to, when the rotation speed difference is smaller than a second preset value and greater than or equal to a third preset value, judge that the eccentricity of the drum washing machine in the dehydration process is greater than a preset safe eccentricity when the accumulated input power is greater than a second preset power, and control the dehydration motor to stop operating, wherein the second preset power is greater than the first preset power;
and when the accumulated input power is less than or equal to the second preset power, judging that the eccentricity of the drum washing machine in the dehydration process is less than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate.
5. The system of claim 4, wherein the control module is further configured to:
and when the rotating speed difference value is smaller than a third preset value, judging that the eccentricity of the drum washing machine in the dehydration process is smaller than or equal to a preset safe eccentricity, and controlling the dehydration motor to continue to operate.
6. A drum washing machine characterized by comprising the eccentricity detection control system in dehydration of the drum washing machine according to claim 4 or 5.
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| CN111434831A (en) * | 2018-12-25 | 2020-07-21 | 青岛海尔洗衣机有限公司 | Control method for eccentric state of washing machine and washing machine |
| CN111501288B (en) * | 2019-01-15 | 2022-05-27 | 无锡飞翎电子有限公司 | Washing machine and weighing method and weighing device thereof |
| CN111485365B (en) * | 2019-01-28 | 2022-12-20 | 无锡飞翎电子有限公司 | Washing machine and control method and device of clothes treatment device |
| CN110016784B (en) * | 2019-05-09 | 2021-05-11 | 深圳和而泰智能控制股份有限公司 | Control method and device of washing machine |
| CN112095286B (en) * | 2019-05-30 | 2023-05-02 | 无锡飞翎电子有限公司 | Laundry treating apparatus, operation control method, system thereof, and storage medium |
| CN110512395A (en) * | 2019-07-10 | 2019-11-29 | 青岛海尔洗衣机有限公司 | Control method of washing machine |
| CN112391795B (en) * | 2019-08-12 | 2023-06-13 | 青岛胶南海尔洗衣机有限公司 | Control method and device of washing machine, washing machine and storage medium |
| CN112709045A (en) * | 2019-10-08 | 2021-04-27 | 无锡飞翎电子有限公司 | Control method and device of washing machine and washing machine |
| CN110735289B (en) * | 2019-10-18 | 2021-12-10 | 峰岹科技(深圳)股份有限公司 | Method for detecting eccentricity of washing machine, washing machine eccentricity detection device, storage medium and washing machine |
| CN111058228B (en) * | 2019-12-31 | 2024-06-14 | 合肥海尔滚筒洗衣机有限公司 | Dewatering control method for washing equipment |
| CN110965260B (en) * | 2019-12-31 | 2024-06-18 | 合肥海尔滚筒洗衣机有限公司 | Dewatering control method for washing equipment |
| CN113684647A (en) * | 2021-08-06 | 2021-11-23 | 珠海格力电器股份有限公司 | Washing machine control method and washing machine |
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