CN111705471A - Software algorithm for realizing dry cloth weight sensing of BLDC drum washing machine - Google Patents
Software algorithm for realizing dry cloth weight sensing of BLDC drum washing machine Download PDFInfo
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- CN111705471A CN111705471A CN202010554288.2A CN202010554288A CN111705471A CN 111705471 A CN111705471 A CN 111705471A CN 202010554288 A CN202010554288 A CN 202010554288A CN 111705471 A CN111705471 A CN 111705471A
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- washing machine
- weight
- 152rpm
- 114rpm
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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
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
- D06F2105/48—Drum speed
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- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention discloses a software algorithm for realizing dry cloth weight sensing of a BLDC drum washing machine, which comprises the following steps: 1) after the washing machine is accelerated to 114rpm, delaying for 5s, waiting for the rotating speed to be stable, accelerating to 152rpm at the accelerated speed of 20rpm/s for 2s, calculating the instantaneous power p according to the voltage and the current in the accelerating process, and integrating j1And obtaining a first motor acceleration work value, maintaining the speed at 152rpm for 5s, then slowing down to 114rpm by means of inertia, and timing CNT 1. The invention realizes the perception of the dry cloth weight of the clothes of the washing machine through the software control algorithm, and the discrimination of the dry cloth weight of the clothes of the washing machine obtained by applying the algorithm is good, and the effect is obvious.
Description
Technical Field
The invention relates to a software algorithm for realizing dry cloth weight perception of a BLDC drum washing machine, and mainly relates to a software algorithm in the field of washing machines.
Background
With the rapid development of science and technology, washing machines have gone into thousands of households. The modern society rhythm is very fast, and the use of washing machine has practiced thrift everybody a large amount of precious time. With the progress of technology and the increase of energy consumption, drum washing machines with brushless direct current motors (BLDC) are being gradually popularized. The drum washing machine with the brushless direct current motor has the advantages of high efficiency, low noise and the like, and simultaneously brings complexity of a perception algorithm. The perception algorithm of the drum washing machine comprises weight perception, eccentricity perception, resonance perception and the like. The invention is a software algorithm based on dry cloth weight sensing, and can well solve the problem of dry cloth weight sensing of the washing machine.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a software algorithm for realizing dry cloth weight perception of a BLDC drum washing machine, which realizes dry cloth weight perception of clothes of the washing machine through a software control algorithm.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a software algorithm for realizing dry cloth weight sensing of a BLDC drum washing machine comprises the following steps:
1) after the washing machine is accelerated to 114rpm, delaying for 5s, waiting for the rotation speed to be stable, accelerating to 152rpm at the acceleration speed of 20rpm/s, continuing for 2s in the acceleration process, calculating the instantaneous power p according to the voltage and the current in the acceleration process, integrating j1 to obtain a first motor acceleration work doing value, maintaining for 5s at 152rpm, and then decelerating to 114rpm by means of inertia and timing CNT 1;
2) after the washing machine is decelerated to 114rpm, delaying for 5s, waiting for the rotation speed to be stable, accelerating to 152rpm at the acceleration of 20rpm/s, continuing the acceleration process for 2s, calculating the instantaneous power p in the acceleration process, integrating j2 to obtain a second motor acceleration work value, maintaining for 5s at 152rpm, and then decelerating to 114rpm by means of inertia and timing CNT 2;
3) the weight perception calculation formula is as follows:
instantaneous power calculation formula p ═ udid+uqiq
Work calculation formula: j ═ pd-t
Weight _ up (j) is1+j2)/2
Weight＝Weight_up-Weight_down；
The CNT offset is the timing of the empty barrel from 152rpm to 114rpm, and k is the conversion coefficient.
Preferably, the acceleration and the speed are both values of the drum, and are not motor body values.
Preferably, said calculation and integration of the instantaneous power is performed within a speed loop, which executes a frequency of 1 kHZ.
By the technical scheme, the software algorithm for realizing dry cloth weight perception of the BLDC drum washing machine provided by the invention realizes dry cloth weight perception of clothes of the washing machine through the software control algorithm, and the clothes dry cloth weight discrimination of the washing machine obtained by applying the algorithm is good and the effect is obvious.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a graphical representation of experimental data for the present invention;
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In this embodiment, as shown in fig. 1, a software algorithm for implementing dry cloth weight sensing of a BLDC drum washing machine includes the following steps:
1) after the washing machine is accelerated to 114rpm, delaying for 5s, waiting for the rotation speed to be stable, accelerating to 152rpm at the acceleration speed of 20rpm/s, continuing for 2s in the acceleration process, calculating the instantaneous power p according to the voltage and the current in the acceleration process, integrating j1 to obtain a first motor acceleration work doing value, maintaining for 5s at 152rpm, and then decelerating to 114rpm by means of inertia and timing CNT 1;
2) after the washing machine is decelerated to 114rpm, delaying for 5s, waiting for the rotation speed to be stable, accelerating to 152rpm at the acceleration of 20rpm/s, continuing the acceleration process for 2s, calculating the instantaneous power p in the acceleration process, integrating j2 to obtain a second motor acceleration work value, maintaining for 5s at 152rpm, and then decelerating to 114rpm by means of inertia and timing CNT 2;
3) the weight perception calculation formula is as follows:
instantaneous power calculation formula p ═ udid+uqiq
Work meterCalculating a formula: j ═ pd-t
Weight _ up (j) is1+j2)/2
Weight＝Weight_up-Weight_down；
The CNT offset is the timing of the empty barrel from 152rpm to 114rpm, and k is a conversion coefficient, which can be changed according to factors such as different washing machine structures and experimental data.
The acceleration and the speed values are drum values, non-motor body values, speed set values and acceleration set values are non-constant values, and can be changed according to factors such as different washing machine structures, motor bodies and experimental data; the calculation and integration of the instantaneous power is performed within a speed loop, which executes a frequency of 1 kHZ.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. A software algorithm for realizing dry cloth weight sensing of a BLDC drum washing machine is characterized by comprising the following steps:
1) after the washing machine is accelerated to 114rpm, delaying for 5s, waiting for the rotating speed to be stable, accelerating to 152rpm at the accelerated speed of 20rpm/s for 2s, calculating the instantaneous power p according to the voltage and the current in the accelerating process, and integrating j1Obtaining a first motor acceleration work value, maintaining the speed at 152rpm for 5s, then slowing down to 114rpm by means of inertia, and timing CNT 1;
2) after the washing machine is decelerated to 114rpm, the time is delayed by 5s, the rotating speed is waited to be stable, and thenAccelerating to 152rpm with an acceleration of 20rpm/s, the acceleration process lasting 2s, calculating the instantaneous power p during the acceleration process and integrating j2Obtaining a second motor acceleration work value, maintaining the speed at 152rpm for 5s, then slowing down to 114rpm by means of inertia, and timing CNT 2;
3) the weight perception calculation formula is as follows:
instantaneous power calculation formula p ═ udid+uqiq
Work calculation formula: j ═ pd-t
Weight _ up (j) is1+j2)/2
Weight＝Weight_up-Weight_down；
The CNTofsei is the timing of the empty barrel from 152rpm to 114rpm, and k is a conversion coefficient.
2. The software algorithm for realizing dry cloth weight sensing of the BLDC drum washing machine according to claim 1, wherein the acceleration and speed values are drum values and non-motor body values.
3. A software algorithm for realizing the perception of the dry-cloth weight of BLDC drum washing machines according to claim 1, characterized by the fact that the calculation and integration of the instantaneous power is carried out within a speed loop, which implements a frequency of 1 kHZ.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010554288.2A CN111705471A (en) | 2020-06-17 | 2020-06-17 | Software algorithm for realizing dry cloth weight sensing of BLDC drum washing machine |
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| CN202010554288.2A CN111705471A (en) | 2020-06-17 | 2020-06-17 | Software algorithm for realizing dry cloth weight sensing of BLDC drum washing machine |
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| CN202010554288.2A Pending CN111705471A (en) | 2020-06-17 | 2020-06-17 | Software algorithm for realizing dry cloth weight sensing of BLDC drum washing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575214A (en) * | 2023-07-13 | 2023-08-11 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
| CN116575215A (en) * | 2023-07-13 | 2023-08-11 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
-
2020
- 2020-06-17 CN CN202010554288.2A patent/CN111705471A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575214A (en) * | 2023-07-13 | 2023-08-11 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
| CN116575215A (en) * | 2023-07-13 | 2023-08-11 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
| CN116575215B (en) * | 2023-07-13 | 2023-09-05 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
| CN116575214B (en) * | 2023-07-13 | 2023-09-05 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
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