CN104195786B - A kind of fuzzy Weighing method and rotary drum washing machine - Google Patents

A kind of fuzzy Weighing method and rotary drum washing machine Download PDF

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Publication number
CN104195786B
CN104195786B CN201410277513.7A CN201410277513A CN104195786B CN 104195786 B CN104195786 B CN 104195786B CN 201410277513 A CN201410277513 A CN 201410277513A CN 104195786 B CN104195786 B CN 104195786B
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China
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time
washing machine
drum washing
rotary drum
impeller
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CN104195786A (en
Inventor
谷虎
刘玉春
刘文祥
文蛟
湛国庆
刘阳
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Hisense Shandong Refrigerator Co Ltd
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Hisense Ronshen Guangdong Refrigerator Co Ltd
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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 
    • D06F2202/10—

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

The embodiment of the present invention provides the fuzzy Weighing method of one and rotary drum washing machine, is applied to rotary drum washing machine control field, it is possible to saves rotary drum washing machine and determines the time of washing clothes weight, and then shortens the time of laundry every time.Described fuzzy Weighing method includes: the impeller of rotary drum washing machine described in described driven by motor accelerates to rotate to the first specified rotary speed；Described motor and described impeller are simultaneously in free moderating process, obtain described impeller and are decelerated to the very first time of the second specified rotary speed from described first specified rotary speed, and described second specified rotary speed is not zero；According to the described very first time, determine the weight of medicated clothing in described rotary drum washing machine.The fuzzy Weighing method that the embodiment of the present invention provides, determines the weight of medicated clothing for rotary drum washing machine.

Description

A kind of fuzzy Weighing method and rotary drum washing machine
Technical field
The present invention relates to rotary drum washing machine control field, particularly relate to a kind of fuzzy Weighing method and Rotary drum washing machine.
Background technology
In the washing process of rotary drum washing machine, can be according to the Weight control washing of washing medicated clothing Time, flooding time, inflow and washing beat, therefore, before washing, one As it needs to be determined that washing medicated clothing weight.
The method of the weight of the medicated clothing of detection washing at present mainly puts into medicated clothing at rotary drum washing machine Afterwards, control motor and the impeller of rotary drum washing machine rotated in one direction to First Speed, Then allow impeller freely slow down, at impeller during First Speed is freely decelerated to zero, obtain The umber of pulse of power taking machine output, can obtain medicated clothing in rotary drum washing machine according to described umber of pulse Weight, but when measuring clothes weight by this method, acquisition is that impeller is from First Speed It is decelerated to the umber of pulse of zero, is thus subjected to impeller and is decelerated to the mistake of zero from First Speed Journey, the time therefore taken is longer, used time when causing rotary drum washing machine to determine washing clothes weight Longer, and then cause the time every time done washing longer.
Summary of the invention
Embodiments of the invention provide the fuzzy Weighing method of one and rotary drum washing machine, it is possible to save Rotary drum washing machine determines the time of washing clothes weight, and then shortens the time of laundry every time.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
On the one hand, it is provided that a kind of fuzzy Weighing method, for rotary drum washing machine, described impeller is washed The motor of clothing machine is external rotor electric machine, and described fuzzy Weighing method includes:
The impeller of rotary drum washing machine described in described driven by motor accelerates to rotate to the first specified rotation Speed；
Described motor and described impeller are simultaneously in free moderating process, obtain described impeller from institute State the first specified rotary speed and be decelerated to the very first time of the second specified rotary speed, described second Specified rotary speed is not zero；
According to the described very first time, determine the weight of medicated clothing in described rotary drum washing machine.
Optionally, the impeller at rotary drum washing machine described in described driven by motor accelerates to rotate to first After specified rotary speed, described method also includes:
The impeller of rotary drum washing machine described in described driven by motor in the first preset duration continue with Described first specified rotary speed rotates.
Optionally, described according to the described very first time, medicated clothing in described rotary drum washing machine is determined Weight before, described method also includes:
Obtaining for the second time, described second time is to there is not medicated clothing in described rotary drum washing machine Time, described impeller is decelerated to described second specified rotary speed from described first specified rotary speed Time used；
Described according to the described very first time, determine the weight bag of medicated clothing in described rotary drum washing machine Include:
According to the difference of the described very first time Yu described second time, determine the weight of described medicated clothing Amount；
Or according to the ratio of the described very first time Yu described second time, determine described medicated clothing Weight.
On the one hand, it is provided that a kind of rotary drum washing machine, the motor of described rotary drum washing machine is outer rotor Motor, described rotary drum washing machine includes that control unit, described control unit are used for:
Control described motor so that the impeller of rotary drum washing machine described in described driven by motor accelerates rotation Go to the first specified rotary speed；
Control described motor so that described motor and described impeller are simultaneously in and freely slowed down Journey；
Described rotary drum washing machine also includes acquiring unit, is used for obtaining described impeller from described first Specified rotary speed is decelerated to the very first time of the second specified rotary speed, described second specified rotation Rotary speed is not zero；
Determine unit, for according to the described very first time, determine medicated clothing in described rotary drum washing machine Weight.
Optionally, described control unit is additionally operable to:
Control described motor so that described in described driven by motor, the impeller of rotary drum washing machine is first Continue in preset duration to rotate with described first specified rotary speed.
Optionally, described acquiring unit is additionally operable to:
Obtaining for the second time, described second time is to there is not medicated clothing in described rotary drum washing machine Time, described impeller is decelerated to described second specified rotary speed from described first specified rotary speed Time used；
Described determine unit specifically for:
According to the difference of the described very first time Yu described second time, determine the weight of described medicated clothing Amount；
Or according to the ratio of the described very first time Yu described second time, determine described medicated clothing Weight.
On the one hand, it is provided that a kind of fuzzy Weighing method, for rotary drum washing machine, described impeller is washed The motor of clothing machine is inner rotor motor, and described fuzzy Weighing method includes:
The impeller of rotary drum washing machine described in described driven by motor and washing tub accelerate to rotate simultaneously to 3rd specified rotary speed；
Described motor, described impeller and described washing tub are simultaneously in free moderating process, obtain Described impeller is decelerated to the 4th volume from described 3rd specified rotary speed with described washing tub simultaneously Determining the 3rd time of rotary speed, described 4th specified rotary speed is not zero；
According to described 3rd time, determine the weight of medicated clothing in described rotary drum washing machine.
Optionally, add with washing tub at the impeller of rotary drum washing machine described in described driven by motor simultaneously Speed rotates after the 3rd specified rotary speed, and described method also includes:
Impeller described in described driven by motor and described washing tub are simultaneously in described second preset duration Interior continuing rotates with described 3rd specified rotary speed.
Optionally, described according to described 3rd time, medicated clothing in described rotary drum washing machine is determined Weight before, described method also includes:
Obtaining for the 4th time, described 4th time is to there is not medicated clothing in described rotary drum washing machine Time, described impeller and described washing tub are decelerated to described simultaneously from described 3rd specified rotary speed Time used by 4th specified rotary speed；
Described according to described 3rd time, determine the weight bag of medicated clothing in described rotary drum washing machine Include:
According to the difference of described 3rd time Yu described 4th time, determine the weight of described medicated clothing Amount；
Or according to the ratio of described 3rd time Yu described 4th time, determine described medicated clothing Weight.
Optionally, it is simultaneously in free deceleration at described motor, described impeller and described washing tub Before process, described method also includes:
Medicated clothing water spray in described rotary drum washing machine, continues the 3rd preset duration.
On the one hand, it is provided that a kind of rotary drum washing machine, the motor of described rotary drum washing machine is internal rotor Motor, described rotary drum washing machine includes that control unit, described control unit are used for:
Control described motor so that the impeller of rotary drum washing machine described in described driven by motor with wash Clothing bucket accelerates to rotate to the 3rd specified rotary speed simultaneously；
Control described motor so that described motor, described impeller and described washing tub are simultaneously in Free moderating process；
Described rotary drum washing machine also includes acquiring unit, is used for obtaining described impeller and described laundry Bucket is simultaneously when described 3rd specified rotary speed is decelerated to the 3rd of the 4th specified rotary speed the Between, described 4th specified rotary speed is not zero；
Determine unit, for according to described 3rd time, determine medicated clothing in described rotary drum washing machine Weight.
Optionally, described control unit is additionally operable to:
Control described motor so that impeller described in described driven by motor exists with described washing tub simultaneously Continue in described second preset duration to rotate with described 3rd specified rotary speed.
Optionally, described acquiring unit is additionally operable to:
Obtaining for the 4th time, described 4th time is to there is not medicated clothing in described rotary drum washing machine Time, described impeller and described washing tub are decelerated to described simultaneously from described 3rd specified rotary speed Time used by 4th specified rotary speed；
Described determine unit specifically for:
According to the difference of described 3rd time Yu described 4th time, determine the weight of described medicated clothing Amount；
Or according to the ratio of described 3rd time Yu described 4th time, determine described medicated clothing Weight.
Optionally, described rotary drum washing machine also includes water spray unit, for doing washing to described impeller Medicated clothing water spray in machine, continues the 3rd preset duration.
The embodiment of the present invention provides the fuzzy Weighing method of one and rotary drum washing machine, owing to have employed Above technical scheme, has the advantage that
(1) if the motor of described rotary drum washing machine is external rotor electric machine, when described impeller is done washing When machine carries out fuzzy weighing, it is necessary first to the motor for described rotary drum washing machine is powered so that institute The impeller stating rotary drum washing machine described in driven by motor accelerates to rotate to the first specified rotary speed, so Rear stopping is that described motor is powered so that described motor and described impeller are simultaneously in free deceleration Process, obtains described impeller and is decelerated to the second specified rotation speed from described first specified rotary speed The very first time of degree, described second specified rotary speed is not zero, and then can be according to described the One time, determine the weight of medicated clothing in described rotary drum washing machine.The rotor of described external rotor electric machine Outside, and the quality of described rotor is bigger so that the rotary inertia of external rotor electric machine is relatively big, because of This is when driven by motor impeller rotates, and motor is relatively big with the rotary inertia of impeller, described impeller Moderating process can be with last longer, it is possible to slowed down from the first specified rotary speed by impeller Time to the second specified rotary speed determines the weight of medicated clothing.Compared to prior art, institute State rotary drum washing machine when the medicated clothing in rotary drum washing machine is weighed, it is not necessary to experience is described Impeller is decelerated to the process of zero from the first specified rotary speed, it is thus only necessary to obtain described impeller from first Specified rotary speed continued deceleration is to described very first time of the second specified rotary speed, described second volume Determine rotary speed to be not zero, say, that the very first time is less than described impeller with washing tub simultaneously from first Specified rotary speed continued deceleration to speed is the time used by zero such that it is able to saves described impeller and washes Clothing machine determines the time of the weight of washing medicated clothing, and then shortens the time of laundry every time.
(2) if the motor of described rotary drum washing machine is inner rotor motor, when described impeller is done washing When machine carries out fuzzy weighing, it is necessary first to the motor for described rotary drum washing machine is powered so that institute The impeller stating rotary drum washing machine described in driven by motor accelerates with washing tub to rotate to the 3rd volume simultaneously Determine rotary speed, then stop power for described motor so that described motor, described impeller and Described washing tub is simultaneously in free moderating process, obtains described impeller with described washing tub simultaneously The 3rd time of the 4th specified rotary speed it is decelerated to from described 3rd specified rotary speed, described 4th specified rotary speed is not zero, and then according to described 3rd time, determines that described impeller is washed The weight of medicated clothing in clothing machine.The rotor of described inner rotor motor is at center so that described internal rotor electricity The rotary inertia of machine is less, when inner rotor motor drives the ripple of described rotary drum washing machine by belt transmission When wheel rotates, motor is less with the rotary inertia of impeller, and impeller is decelerated to from the 3rd specified rotary speed The time of the 4th specified rotary speed is the shortest, when there is medicated clothing in described rotary drum washing machine, due to Friction effects between medicated clothing and impeller, it is specified that impeller is decelerated to the 4th from the 3rd specified rotary speed The time of rotary speed is shorter, if therefore the motor of rotary drum washing machine is inner rotor motor, to impeller When medicated clothing in washing machine carries out fuzzy weighing, so that impeller and washing tub rotate simultaneously, rotate Inertia is relatively big, and medicated clothing can be followed washing tub and be rotated together, and centrifugal force when medicated clothing rotates is further Add rotary inertia, extend the deceleration time of described impeller and washing tub, therefore, it is possible to pass through ripple Wheel and washing tub are decelerated to the 3rd time of the 4th specified rotary speed from the 3rd specified rotary speed Determine the weight of medicated clothing.Compared to prior art, described rotary drum washing machine is in rotary drum washing machine Medicated clothing when weighing, it is not necessary to experience described impeller with described washing tub simultaneously from the 3rd volume Determine rotary speed and be decelerated to the process of zero, it is thus only necessary to obtain described impeller same with described washing tub Shi Cong tri-specified rotary speed continued deceleration to the 4th specified rotary speed the described 3rd time Between, described 4th specified rotary speed is not zero, say, that the 3rd time was less than described impeller With washing tub simultaneously from the 3rd specified rotary speed continued deceleration to speed be the time used by zero, It is thus possible to save the time that described rotary drum washing machine determines the weight of washing medicated clothing, and then shorten The time of laundry every time.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below by right In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, Accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art From the point of view of, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings Figure.
Fig. 1 obscures Weighing method flow chart for the one that the embodiment of the present invention provides；
The structural representation of a kind of rotary drum washing machine that Fig. 2 provides for the embodiment of the present invention；
Fig. 3 obscures Weighing method flow chart for the another kind that the embodiment of the present invention provides；
The structural representation of the another kind of rotary drum washing machine that Fig. 4 provides for the embodiment of the present invention；
The structural representation of another rotary drum washing machine that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered Row clearly and completely describes, it is clear that described embodiment is only a part of embodiment of the present invention, Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having Have and make the every other embodiment obtained under creative work premise, broadly fall into present invention protection Scope.
The embodiment of the present invention provides one fuzzy Weighing method, as it is shown in figure 1, for rotary drum washing machine, The motor of described rotary drum washing machine is external rotor electric machine, and described fuzzy Weighing method includes:
The impeller of rotary drum washing machine described in step 101, described driven by motor accelerates to rotate to first Specified rotary speed.
Concrete, described rotary drum washing machine can be by motor that control circuit is described rotary drum washing machine Power supply, and then control the acceleration rotation of described external rotor electric machine, drive the impeller of described rotary drum washing machine to revolve Going to the first specified rotary speed, described first specified rotary speed is set in advance, can basis The concrete condition of rotary drum washing machine is configured, and this is not limited by the embodiment of the present invention.
Preferably, can accelerate to rotate after the first specified rotary speed at described impeller so that institute Stating impeller to continue to rotate with the first specified rotary speed in the first preset duration, described first when presetting Length is set in advance, can be configured according to the concrete condition of rotary drum washing machine in actual application, This is not limited by the embodiment of the present invention.
Step 102, described motor and described impeller are simultaneously in free moderating process, obtain described ripple Wheel is decelerated to the very first time of the second specified rotary speed from described first specified rotary speed, and described the Two specified rotary speeies are not zero.
It is the rotary drum washing machine of external rotor electric machine for motor, when the impeller of described rotary drum washing machine rotates After the first specified rotary speed, described rotary drum washing machine can be stopped as described by control circuit External rotor electric machine is powered, and the most described motor and impeller are simultaneously in free deceleration regime, then obtain Described impeller is decelerated to the very first time of the second specified rotary speed from described first specified rotary speed.
Optionally, it is the rotary drum washing machine of external rotor electric machine for motor, the rotary speed of impeller and electricity The rotating speed of machine is equal, can be determined the rotary speed of impeller by the rotating speed of motor.Example, described Motor can configure Hall element, motor every revolution, and Hall element exports 12 pulses, The most described rotary drum washing machine can obtain motor by the umber of pulse that Hall element per second exports Rotating speed.Concrete, it is assumed that the first specified rotary speed of impeller is 100 revolutions per seconds, corresponding pulse Number is 1200 pulses each second, and the second specified rotary speed of impeller is 30 revolutions per seconds, corresponding Umber of pulse is 360 pulses each second, then the umber of pulse exported when Hall element is each second 1200 Time individual, the rotary speed of impeller has reached the first specified rotary speed, and now timer starts timing also Stop powering for motor so that motor and impeller are in deceleration regime, when the arteries and veins of Hall element output When strokes per minute is reduced to each second 360, represent that the rotary speed of impeller has reached the second specified rotation speed Degree, timer stops timing, and the time that now timer is recorded is the very first time.Actual application In, rotary drum washing machine can also determine turning of motor by the change frequency of the electromotive force that motor exports Speed, or lenticular lenses is set on motor, the rotating speed of motor is determined by raster count.
Wherein, described second specified rotary speed is not zero, and described second specified rotary speed is in advance Setting, can be configured according to the concrete condition of rotary drum washing machine, the embodiment of the present invention is to this not Limit.
Preferably, continue to rotate with the first specified rotary speed in the first preset duration when described impeller Afterwards, described rotary drum washing machine can continue as motor and power, and then obtains described impeller from described One specified rotary speed is decelerated to the very first time of the second specified rotary speed.
Step 103, according to the described very first time, determine the weight of medicated clothing in described rotary drum washing machine.
Owing to the motor of described rotary drum washing machine is external rotor electric machine, thus the impeller of rotary drum washing machine with External rotor electric machine is to rotate coaxially, the rotor of external rotor electric machine outside, and the quality of described rotor Bigger so that the rotary inertia of external rotor electric machine is relatively big, therefore when driven by motor impeller rotates, Motor is relatively big, when the moderating process of described impeller can continue longer with the rotary inertia of impeller Between, it is possible to by impeller from the first specified rotary speed be decelerated to the second specified rotary speed time Between determine the weight of medicated clothing.
When the medicated clothing in rotary drum washing machine is more, the frictional force between described medicated clothing and impeller is relatively Greatly, under the influence of described bigger frictional force, described impeller subtracts from the first specified rotary speed Speed is shorter to the very first time used by the second specified rotary speed, when the medicated clothing in rotary drum washing machine Time less, the frictional force between described medicated clothing and impeller is less, in described less frictional force Under the influence of, described impeller is decelerated to used by the second specified rotary speed from the first specified rotary speed The very first time longer, so the weight of the medicated clothing in rotary drum washing machine becomes anti-with the described very first time Ratio.
Optionally, the time that can prestore table corresponding with clothes weight, described time and clothes weight The clothes weight that the corresponding table record different time is the most corresponding, then according to the very first time, inquiry The time prestored table corresponding with clothes weight, i.e. can determine that the weight of medicated clothing in rotary drum washing machine.
In actual application, it is also possible to prestore acceleration table corresponding with clothes weight, described acceleration The clothes weight that table corresponding from clothes weight is corresponding different acceleration is corresponding, when getting described After one time, the described very first time can be obtained according to the corresponding relation between time and acceleration The first corresponding acceleration, then according to the first acceleration, inquires about described acceleration and clothes weight pair Answer table, i.e. can determine that the weight of described medicated clothing.
So, when medicated clothing is weighed by the rotary drum washing machine that motor is external rotor electric machine, institute State rotary drum washing machine to first pass through the motor that control circuit is described rotary drum washing machine and power so that The impeller of rotary drum washing machine described in described driven by motor rotates to the first specified rotary speed；Reach first After specified rotary speed, stop powering for described motor so that described motor is with described impeller simultaneously It is in free moderating process, then obtains described impeller and be decelerated to from described first specified rotary speed The very first time of two specified rotary speeies, described second specified rotary speed is not zero, may finally root According to the described very first time, determine the weight of medicated clothing in described rotary drum washing machine.Compared to prior art, Fuzzy Weighing method described in the embodiment of the present invention, it is not necessary to experience described impeller from the first specified rotation The process of speed continued deceleration to zero, it is thus only necessary to obtain described impeller and hold from the first specified rotary speed The continuous described very first time being decelerated to the second specified rotary speed, described second specified rotary speed is not Zero, say, that the very first time is decelerated to used by zero from the first specified rotary speed less than described impeller Time such that it is able to save the time that described rotary drum washing machine determines the weight of washing medicated clothing, and then contracting The time of short each laundry.
Further, the impeller at rotary drum washing machine described in described driven by motor accelerates to rotate to the first volume After determining rotary speed, described motor can also drive the impeller of described rotary drum washing machine to preset first Continue in duration to rotate with described first specified rotary speed.Example, rotary drum washing machine can also continue Continue and power for described motor so that the impeller of rotary drum washing machine described in described driven by motor is preset first Continue in duration to rotate, so so that the ripple of rotary drum washing machine with described first specified rotary speed What the specified rotary speed of wheel was stable maintains the first specified rotary speed, it is to avoid due to described impeller Speed unstable and reduce the accuracy of described fuzzy Weighing method.
Optionally, described according to the described very first time, the weight of medicated clothing in described rotary drum washing machine is determined Before amount, described rotary drum washing machine can also obtain for the second time, and described second time is described impeller When there is not medicated clothing in washing machine, described impeller is decelerated to described from described first specified rotary speed Time used by two specified rotary speeies, then can be according to the described very first time and described second time Difference, determine the weight of described medicated clothing；Or according to the described very first time and described second time Ratio, determines the weight of described medicated clothing.In actual applications, if rotary drum washing machine uses the time longer, Can cause being lost the most serious so that the frictional force within rotary drum washing machine is relatively big, now, if only Determining the weight of medicated clothing in rotary drum washing machine by the very first time, the described very first time can include a part The time change caused by the factor within rotary drum washing machine so that the clothes weight of acquisition is more than medicated clothing Actual weight, determine the weight of medicated clothing according to the difference of the described very first time Yu described second time Amount, then can get rid of the impact caused due to rotary drum washing machine factor.Same employing described first time Between with the ratio of described second time, determine the weight of described medicated clothing, it is also possible to get rid of owing to impeller is washed The impact that clothing machine factor causes.
In actual application, before rotary drum washing machine dispatches from the factory, can be pre-stored in impeller laundry the second time In the control chip of machine, when rotary drum washing machine carries out fuzzy weighing to medicated clothing, can be directly from described Control chip obtained the second time.Concretely comprising the following steps of the second time is obtained: described during initialization When there is not medicated clothing in the washing tub of rotary drum washing machine, the motor for rotary drum washing machine is powered so that institute State impeller described in driven by motor to rotate to described first specified rotary speed, then stop as described motor Power supply so that described motor and described impeller are simultaneously in free moderating process, obtain described impeller from Described first specified rotary speed is decelerated to the time used by described second specified rotary speed as Two times.
When rotary drum washing machine uses the time longer, when wearing and tearing bigger, user can also be according to obtaining second The concrete steps of time redeterminated for the second time, obtained the second new time, then with described new Second time was more newly stored in the second time in control chip, improves the fuzzy of rotary drum washing machine and weighs The accuracy of method.
Optionally, in the described difference according to the described very first time Yu described second time, determine described During the weight of medicated clothing, time difference and clothing can be stored in advance in the control chip of described rotary drum washing machine Thing weight correspondence table, the different time difference of described time difference table record corresponding from clothes weight is the most right The clothes weight answered；Then can inquire about according to the difference of the described very first time Yu described second time The time difference prestored table corresponding with clothes weight, i.e. can determine that the weight of described medicated clothing.
Optionally, at the described ratio according to the described very first time Yu described second time, determine described During the weight of medicated clothing, can prestore in the control chip of described rotary drum washing machine time ratios with Clothes weight correspondence table, the different time ratios of described time ratios table record corresponding from clothes weight The most corresponding clothes weight；Then according to the ratio of the described very first time Yu described second time, look into Ask the time ratios table corresponding with clothes weight prestored, i.e. can determine that the weight of described medicated clothing.
The embodiment of the present invention provides one fuzzy Weighing method, washes at the impeller that motor is external rotor electric machine When medicated clothing is weighed by clothing machine, the motor that control circuit is described rotary drum washing machine can be first passed through Power supply so that the impeller of rotary drum washing machine described in described driven by motor rotates to the first specified rotation speed Degree；After reaching the first specified rotary speed, stop powering for described motor so that described motor with Described impeller is simultaneously in free moderating process, then obtains described impeller from described first specified rotation Speed reduction is to very first time of the second specified rotary speed, and described second specified rotary speed is not Zero, the weight of medicated clothing in described rotary drum washing machine may finally be determined according to the described very first time.Or Person obtains when not having medicated clothing in rotary drum washing machine, and described impeller is decelerated to from the first specified rotary speed The second time used by second specified rotary speed, then according to the difference of the very first time Yu the second time Or ratio, determine the weight of medicated clothing in described rotary drum washing machine.Compared to prior art, the present invention is real Execute the fuzzy Weighing method described in example, it is not necessary to experience described impeller and continue from the first specified rotary speed Be decelerated to the process of zero, it is thus only necessary to obtain described impeller from the first specified rotary speed continued deceleration to The described very first time of the second specified rotary speed, described second specified rotary speed is not zero, the most just It is to say that the very first time is less than described impeller and is decelerated to the time used by zero from the first specified rotary speed, from And can save the time that described rotary drum washing machine determines the weight of washing medicated clothing, and then shortening is washed every time The time of clothing.Further, due to described rotary drum washing machine can also according to the very first time with second time Between difference or ratio, determine the weight of medicated clothing in described rotary drum washing machine, it is possible to get rid of due to impeller The impact that washing machine factor causes, improves the accuracy of described fuzzy Weighing method.
The embodiment of the present invention provides a kind of rotary drum washing machine 20, and the motor of described rotary drum washing machine 20 is External rotor electric machine, as in figure 2 it is shown, described rotary drum washing machine 20 includes control unit 201, obtains list Unit 202 and determine unit 203.
Described control unit 201 is used for: control described motor so that impeller described in described driven by motor The impeller of washing machine 20 accelerates to rotate to the first specified rotary speed；Control described motor so that institute State motor and be simultaneously in free moderating process with described impeller.
Concrete, described rotary drum washing machine 20 can be described rotary drum washing machine 20 by control circuit Motor power, and then control described external rotor electric machine accelerate rotate, drive described rotary drum washing machine 20 Impeller rotate to the first specified rotary speed, described first specified rotary speed is set in advance, Can be configured according to the concrete condition of rotary drum washing machine 20, this is not limited by the embodiment of the present invention Fixed.Then can also stop powering for described external rotor electric machine by control circuit, the most described motor It is simultaneously in free deceleration regime with impeller.
Acquiring unit 202, is used for obtaining described impeller and is decelerated to from described first specified rotary speed The very first time of two specified rotary speeies, described second specified rotary speed is not zero.
General, acquiring unit 202 can the timing when described moderating process starts, when described impeller Timing, now record is stopped when described first specified rotary speed is decelerated to the second specified rotary speed Time be the very first time.
Optionally, it is the rotary drum washing machine of external rotor electric machine for motor, the rotary speed of impeller and electricity The rotating speed of machine is equal, can be determined the rotary speed of impeller by the rotating speed of motor.Example, described Motor can configure Hall element, motor every revolution, and Hall element exports 12 pulses, The most described rotary drum washing machine can obtain motor by the umber of pulse that Hall element per second exports Rotating speed.Concrete, it is assumed that the first specified rotary speed of impeller is 100 revolutions per seconds, corresponding pulse Number is 1200 pulses each second, and the second specified rotary speed of impeller is 30 revolutions per seconds, corresponding Umber of pulse is 360 pulses each second, then the umber of pulse exported when Hall element is each second 1200 Time individual, the rotary speed of impeller has reached the first specified rotary speed, and now timer starts timing also Stop powering for motor so that motor and impeller are in deceleration regime, when the arteries and veins of Hall element output When strokes per minute is reduced to each second 360, represent that the rotary speed of impeller has reached the second specified rotation speed Degree, timer stops timing, and now acquiring unit 202 can obtain the time that timer is recorded, I.e. can get the very first time.In actual application, the electricity that acquiring unit 202 can also be exported by motor The change frequency of kinetic potential determines the rotating speed of motor, or arranges lenticular lenses on motor, passes through grating Counting determines the rotating speed of motor.
Determine unit 203, for according to the described very first time, determine in described rotary drum washing machine 20 The weight of medicated clothing.
Owing to the motor of described rotary drum washing machine 20 is external rotor electric machine, so rotary drum washing machine 20 Impeller and external rotor electric machine are to rotate coaxially, the rotor of external rotor electric machine outside, and the matter of described rotor Measure bigger so that the rotary inertia of external rotor electric machine is relatively big, therefore when driven by motor impeller rotates, The rotary inertia of motor and impeller is the biggest, the moderating process of described impeller can with last longer, It is easy to be decelerated to from the first specified rotary speed the very first time of the second specified rotary speed by impeller Determine the weight of medicated clothing.
Common, the weight of described medicated clothing was inversely proportional to the described very first time, i.e. worked as rotary drum washing machine When medicated clothing in 20 is more, the frictional force between described medicated clothing and impeller is relatively big, in described bigger rubbing Under the influence of wiping power, described impeller is decelerated to the second specified rotary speed institute from the first specified rotary speed The very first time shorter, when the medicated clothing in rotary drum washing machine 20 is less, described medicated clothing and impeller Between frictional force less, under the influence of described less frictional force, described impeller is specified from first The very first time that rotary speed is decelerated to used by the second specified rotary speed is longer, so rotary drum washing machine In the weight of medicated clothing be inversely proportional to the very first time.
Optionally, time and clothing can be prestored in the control chip of described rotary drum washing machine 20 Thing weight correspondence table, described time table record corresponding from clothes weight different time is the most corresponding Clothes weight, then according to the very first time, the time table corresponding with clothes weight that inquiry prestores, Determine the weight of medicated clothing in rotary drum washing machine 20.
In actual application, it is also possible to prestore acceleration table corresponding with clothes weight, described acceleration The clothes weight that table corresponding from clothes weight is corresponding different acceleration is corresponding, when getting described After one time, the described very first time can be obtained according to the corresponding relation between time and acceleration The first corresponding acceleration, then according to the first acceleration, inquires about described acceleration and clothes weight pair Answer table, i.e. can determine that the weight of described medicated clothing.
So, when medicated clothing is weighed by the rotary drum washing machine that motor is external rotor electric machine, institute State rotary drum washing machine to first pass through the motor that control unit is described rotary drum washing machine and power so that The impeller of rotary drum washing machine described in described driven by motor rotates to the first specified rotary speed；Reach first After specified rotary speed, stop powering for described motor so that described motor is with described impeller simultaneously It is in free moderating process, then obtains described impeller from described first specified rotation by acquiring unit Speed reduction is to very first time of the second specified rotary speed, and described second specified rotary speed is not Zero, unit may finally be determined by determine described rotary drum washing machine underpants according to the described very first time The weight of thing.Compared to prior art, the rotary drum washing machine described in the embodiment of the present invention, it is not necessary to warp Go through the described impeller process from the first specified rotary speed continued deceleration to zero, it is thus only necessary to obtain described Impeller from the described very first time of the first specified rotary speed continued deceleration to the second specified rotary speed, Described second specified rotary speed is not zero, say, that the very first time is less than described impeller from the first volume Determine rotary speed and be decelerated to the time used by zero such that it is able to save described rotary drum washing machine and determine washing The time of the weight of medicated clothing, and then shorten the time of laundry every time.
Further, described rotary drum washing machine 20 can also control described electricity by control unit 201 Machine so that the impeller of rotary drum washing machine 20 described in described driven by motor continues in the first preset duration Rotate with described first specified rotary speed.Example, rotary drum washing machine 20 can also be by controlling Unit 201 continues as described motor and powers so that the impeller of rotary drum washing machine described in described driven by motor Continue to rotate, so so that impeller with described first specified rotary speed in the first preset duration What the rotary speed of the impeller of washing machine 20 was stable maintain the first specified rotary speed, it is to avoid by Speed in described impeller is unstable and reduces the accuracy of described fuzzy Weighing method.
Example, described acquiring unit 202 is additionally operable to: obtained for the second time, and described second time is When there is not medicated clothing in described rotary drum washing machine 20, described impeller is from described first specified rotary speed It is decelerated to the time used by described second specified rotary speed.
In actual application, before rotary drum washing machine 20 dispatches from the factory, the second time can be pre-stored in impeller In the control chip of washing machine 20, when rotary drum washing machine 20 carries out fuzzy weighing to medicated clothing, obtain Unit 202 directly can obtain for the second time from described control chip.
During initialization, rotary drum washing machine 20 obtained for the second time particularly as follows: existed by control unit 201 When there is not medicated clothing in the washing tub of described rotary drum washing machine 20, the motor for rotary drum washing machine 20 supplies Electricity so that impeller described in described driven by motor rotates to described first specified rotary speed, then stops Power for described motor so that described motor and described impeller are simultaneously in free moderating process, pass through Acquiring unit 202 obtains described impeller and is decelerated to from described first specified rotary speed described second specified Time used by rotary speed is as the second time.
When rotary drum washing machine 20 uses the time longer, when wearing and tearing bigger, user can also redeterminate Second time, obtain the second new time, being then more newly stored in control with described the second new time The second time in chip, improve the accuracy of the fuzzy Weighing method of rotary drum washing machine 20.
Described determine unit 203 specifically for: according to the difference of the described very first time Yu described second time Value, determines the weight of described medicated clothing；Or according to the ratio of the described very first time Yu described second time, Determine the weight of described medicated clothing.
Optionally, in the described difference according to the described very first time Yu described second time, determine described During the weight of medicated clothing, time difference can be stored in advance in the control chip of described rotary drum washing machine 20 Table corresponding with clothes weight, the different time difference of described time difference table record corresponding from clothes weight Not corresponding clothes weight；It is then determined that unit 203 can be according to the described very first time and described second The difference of time, the time difference table corresponding with clothes weight that inquiry prestores, i.e. can determine that described medicated clothing Weight.
Optionally, at the described ratio according to the described very first time Yu described second time, determine described During the weight of medicated clothing, time ratio can be prestored in the control chip of described rotary drum washing machine 20 It is worth table corresponding with clothes weight, described time ratios table record corresponding from the clothes weight different time The clothes weight that ratio is the most corresponding；It is then determined that unit 203 can be according to the described very first time and institute State the ratio of the second time, the time ratios table corresponding with clothes weight that inquiry prestores, i.e. can determine that institute State the weight of medicated clothing.
The embodiment of the present invention provides a kind of motor to be external rotor electric machine rotary drum washing machine, is carrying out medicated clothing When weighing, the motor that control unit is described rotary drum washing machine can be first passed through and power so that be described The impeller of rotary drum washing machine described in driven by motor rotates to the first specified rotary speed；Reach first specified After rotary speed, stop powering for described motor so that described motor is simultaneously in described impeller Free moderating process, then obtains described impeller from described first specified rotary speed by acquiring unit Being decelerated to the very first time of the second specified rotary speed, described second specified rotary speed is not zero, Determine that unit can determine the weight of medicated clothing in described rotary drum washing machine according to the described very first time eventually. Or when acquisition does not has medicated clothing in rotary drum washing machine, described impeller slows down from the first specified rotary speed To the second time used by the second specified rotary speed, it is then determined that unit is according to the very first time and second The difference of time or ratio, determine the weight of medicated clothing in described rotary drum washing machine.Compared to prior art, Rotary drum washing machine described in the embodiment of the present invention, it is not necessary to experience described impeller from the first specified rotation speed The process of degree continued deceleration to zero, it is thus only necessary to obtain described impeller and continue from the first specified rotary speed Being decelerated to the described very first time of the second specified rotary speed, described second specified rotary speed is not Zero, say, that the very first time is decelerated to used by zero from the first specified rotary speed less than described impeller Time such that it is able to save the time that described rotary drum washing machine determines the weight of washing medicated clothing, and then contracting The time of short each laundry.Further, can also be according to the very first time due to described rotary drum washing machine With difference or the ratio of the second time, determine the weight of medicated clothing in described rotary drum washing machine, it is possible to get rid of The impact caused due to rotary drum washing machine factor, improves the accuracy of described fuzzy Weighing method.
The embodiment of the present invention provides one fuzzy Weighing method, as described in Figure 3, for rotary drum washing machine, The motor of described rotary drum washing machine is inner rotor motor, and described fuzzy Weighing method includes:
The impeller of rotary drum washing machine described in step 301, described driven by motor accelerates rotation with washing tub simultaneously Go to described 3rd specified rotary speed.
Concrete, described rotary drum washing machine can be that described motor is powered by control circuit, and then control Inner rotor motor processed accelerates to rotate so that the impeller of described driven by motor rotary drum washing machine is same with washing tub The specified rotary speed of Shi Xuanzhuan to the 3rd, described 3rd specified rotary speed is set in advance, permissible Concrete condition according to rotary drum washing machine is configured, and this is not limited by the embodiment of the present invention.
Preferably, accelerate to rotate after the 3rd specified rotary speed with washing tub at impeller simultaneously, make Obtain impeller to continue with washing tub to rotate with the 3rd specified rotary speed in the second preset duration, institute simultaneously It is set in advance for stating the second preset duration, can be according to the concrete feelings of rotary drum washing machine in actual application Condition is configured, and this is not limited by the embodiment of the present invention.
Step 302, described motor, described impeller and described washing tub are simultaneously in free deceleration Process, obtains described impeller and described washing tub and is decelerated to the from described 3rd specified rotary speed simultaneously 3rd time of four specified rotary speeies, described 4th specified rotary speed is not zero.
It is the rotary drum washing machine of inner rotor motor for motor, when described impeller and described washing tub while Rotating after the 3rd specified rotary speed, described rotary drum washing machine can be by control circuit stopping Described inner rotor motor is powered, and the most described motor, described impeller are simultaneously in described washing tub and subtract Speed state, then obtains described impeller and subtracts from described 3rd specified rotary speed with described washing tub simultaneously 3rd time of speed extremely described 4th specified rotary speed.
Optionally, being the rotary drum washing machine of inner rotor motor for motor, motor passes through belt driving band Dynamic impeller and washing tub rotate simultaneously, and the rotary speed of impeller is equal to the rotating speed of motor or proportional, The rotary speed of impeller and washing tub can be determined by the rotating speed of motor.Example, described motor can To configure Hall element, motor every revolution, Hall element exports 12 pulses, then institute State rotary drum washing machine and can be obtained the rotating speed of motor by the umber of pulse that Hall element per second exports.Tool Body, it is assumed that the rotating speed of motor becomes 1:2, impeller and washing tub with the rotary speed of impeller and washing tub The 3rd specified rotary speed be 100 revolutions per seconds, corresponding umber of pulse is 600 pulses each second, Impeller is 30 revolutions per seconds with the 4th specified rotary speed of washing tub, and corresponding umber of pulse is each second 180 Individual pulse, then when the umber of pulse of Hall element output is each second 600, impeller and washing tub Rotary speed reached the 3rd specified rotary speed, now timer starts timing and stops as motor Power supply so that motor and impeller are in deceleration regime, when the umber of pulse of Hall element output is reduced to During each second 180, represent that the rotary speed of impeller and washing tub has reached the 4th specified rotary speed, Timer stops timing, and the time that now timer is recorded was for the 3rd time.In actual application, Rotary drum washing machine can also determine the rotating speed of motor by the change frequency of the electromotive force that motor exports, Or lenticular lenses is set on motor, is determined the rotating speed of motor by raster count.
Wherein, described 4th specified rotary speed is not zero, and described 4th specified rotary speed is in advance Setting, can be configured according to the concrete condition of rotary drum washing machine, the embodiment of the present invention is to this not Limit.
Preferably, it is the rotary drum washing machine of inner rotor motor for motor, when described impeller and washing tub After continuing to rotate with the 3rd specified rotary speed in the second preset duration, stop as described electricity simultaneously Machine is powered, and then obtains described impeller and subtracts from described 3rd specified rotary speed with described washing tub simultaneously 3rd time of speed extremely described 4th specified rotary speed.
Step 303, according to described 3rd time, determine the weight of medicated clothing in described rotary drum washing machine.
Owing to the motor of described rotary drum washing machine is inner rotor motor, thus the impeller of rotary drum washing machine with Needing belt transmission between inner rotor motor, the rotor of described inner rotor motor is at center so that institute The rotary inertia stating inner rotor motor is less, when inner rotor motor drives described impeller by belt transmission When the impeller of washing machine rotates, motor is less with the rotary inertia of impeller, and impeller is from the 3rd specified rotation Speed reduction is the shortest to the time of the 4th specified rotary speed, when there is clothing in described rotary drum washing machine During thing, due to the friction effects between medicated clothing and impeller, impeller slows down from the 3rd specified rotary speed It is shorter to the time of the 4th specified rotary speed, if therefore the motor of rotary drum washing machine is internal rotor electricity Machine, when the medicated clothing in rotary drum washing machine carries out fuzzy weighing, so that impeller and washing tub are same Time rotate, rotary inertia is relatively big, and medicated clothing can be followed washing tub and be rotated together, time medicated clothing rotates Centrifugal force further increases rotary inertia, extends the deceleration time of described impeller and washing tub, because of This can be decelerated to the 4th specified rotary speed by impeller and washing tub from the 3rd specified rotary speed The 3rd time determine the weight of medicated clothing.
When the medicated clothing in rotary drum washing machine is more, the rotary inertia of impeller, washing tub and medicated clothing is relatively big, The most described impeller and washing tub are decelerated to the 4th specified rotary speed institute from the 3rd specified rotary speed The 3rd time longer；When the medicated clothing in rotary drum washing machine is less, impeller, washing tub and medicated clothing Rotary inertia less, the most described impeller and washing tub are decelerated to the 4th from the 3rd specified rotary speed The 3rd time used by specified rotary speed is shorter, so the weight of the medicated clothing in rotary drum washing machine and institute The 3rd time of stating is directly proportional.
Optionally, the time that can prestore table corresponding with clothes weight, described time and clothes weight The clothes weight that the corresponding table record different time is the most corresponding, then according to the 3rd time, inquiry The time prestored table corresponding with clothes weight, i.e. can determine that the weight of medicated clothing in rotary drum washing machine.
In actual application, it is also possible to prestore acceleration and clothing in the control chip of rotary drum washing machine Thing weight correspondence table, described acceleration table corresponding from clothes weight is corresponding, and different acceleration is corresponding Clothes weight, after getting for the 3rd time, can be according to the corresponding pass between time with acceleration System, obtains the second acceleration corresponding to described 3rd time, then according to the second acceleration, inquires about institute State acceleration table corresponding with clothes weight, i.e. can determine that the weight of described medicated clothing.
So, it is external rotor electric machine at rotary drum washing machine motor, and medicated clothing is entered by rotary drum washing machine When row is weighed, it is that motor is powered that described rotary drum washing machine can first pass through control circuit so that described Impeller described in driven by motor and the washing tub of described rotary drum washing machine rotate to described 3rd specified simultaneously Rotary speed；After reaching the 3rd specified rotary speed, stop powering for described motor so that described Motor, described impeller and washing tub are simultaneously in free moderating process, obtain described impeller and wash with described Clothing bucket is decelerated to the 3rd of described 4th specified rotary speed from described 3rd specified rotary speed simultaneously Time, described 4th specified rotary speed is not zero, and may finally determine according to described 3rd time The weight of medicated clothing in described rotary drum washing machine.Compared to prior art, fuzzy described in the embodiment of the present invention Weighing method, it is not necessary to experience described impeller and subtract from the 3rd specified rotary speed with described washing tub simultaneously The process of speed to zero, it is thus only necessary to obtain described impeller with described washing tub simultaneously from the 3rd specified rotation Speed continued deceleration is to described 3rd time of the 4th specified rotary speed, described 4th specified rotation speed Degree is not zero, say, that the 3rd time was less than described impeller with washing tub simultaneously from the 3rd specified rotation Speed continued deceleration is to the time that speed is used by zero such that it is able to saves described rotary drum washing machine and determines The time of the weight of washing medicated clothing, and then shorten the time of laundry every time.
Further, the washing tub of impeller described in described driven by motor and described rotary drum washing machine while Accelerating to rotate after the 3rd specified rotary speed, described motor can also drive described impeller with described Washing tub continues to rotate with described 3rd specified rotary speed in described second preset duration simultaneously.Show Example, rotary drum washing machine can also continue to power for described motor so that ripple described in described driven by motor Wheel and washing tub continue to rotate with described 3rd specified rotary speed in the second preset duration, so may be used So that the specified rotary speed of the impeller of rotary drum washing machine and washing tub stable maintain the 3rd volume Determine rotary speed, it is to avoid owing to the speed of described impeller and washing tub is unstable and reduce described fuzzy The accuracy of Weighing method.
Optionally, described according to described 3rd time, the weight of medicated clothing in described rotary drum washing machine is determined Before amount, described rotary drum washing machine can also obtain for the 4th time, and described 4th time is described impeller When there is not medicated clothing in washing machine, described impeller and described washing tub are simultaneously from described 3rd specified rotation Speed reduction is to the time used by described 4th specified rotary speed；Then can according to the described 3rd time Between with the difference of described 4th time, determine the weight of described medicated clothing；Or according to described 3rd time With the ratio of described 4th time, determine the weight of described medicated clothing.In actual applications, if impeller is washed Clothing machine uses the time longer, can cause being lost the most serious so that the frictional force within rotary drum washing machine Relatively big, now, if determining the weight of medicated clothing in rotary drum washing machine only by the 3rd time, described the Three times can include the time change that a part is caused by the factor within rotary drum washing machine so that obtains Clothes weight more than the actual weight of medicated clothing, according to described 3rd time and described 4th time Difference determines the weight of medicated clothing, then can get rid of the impact caused due to rotary drum washing machine factor.Equally The ratio using described 3rd time and described 4th time, determine the weight of described medicated clothing, it is possible to The impact caused due to rotary drum washing machine factor with eliminating.
In actual application, before rotary drum washing machine dispatches from the factory, can be pre-stored in impeller laundry the 4th time In the control chip of machine, when rotary drum washing machine carries out fuzzy weighing to medicated clothing, can be directly from described Control chip obtained the 4th time.
Concretely comprising the following steps of the 4th time is obtained: when in the washing tub of described rotary drum washing machine during initialization When there is not medicated clothing, described rotary drum washing machine is supplied by the motor that control circuit is described rotary drum washing machine Electricity so that impeller described in described driven by motor and described washing tub rotate to described 3rd specified rotation simultaneously Rotary speed, then stops powering for described motor by control circuit so that described motor, described ripple Wheel and described washing tub are simultaneously in free moderating process, obtain described impeller with described washing tub simultaneously It is decelerated to the time conduct used by described 4th specified rotary speed from described 3rd specified rotary speed 4th time.
Optionally, in the described difference according to described 3rd time Yu described 4th time, determine described During the weight of medicated clothing, time difference and clothing can be stored in advance in the control chip of described rotary drum washing machine Thing weight correspondence table, the different time difference of described time difference table record corresponding from clothes weight is the most right The clothes weight answered；Then can inquire about according to the difference of described 3rd time Yu described 4th time The time difference prestored table corresponding with clothes weight, i.e. can determine that the weight of described medicated clothing.
Optionally, at the described ratio according to described 3rd time Yu described 4th time, determine described During the weight of medicated clothing, can prestore in the control chip of described rotary drum washing machine time ratios with Clothes weight correspondence table, the different time ratios of described time ratios table record corresponding from clothes weight The most corresponding clothes weight；Then according to the ratio of described 3rd time Yu described 4th time, look into Ask the time ratios table corresponding with clothes weight prestored, i.e. can determine that the weight of described medicated clothing.
Optionally, it is simultaneously in free moderating process at described motor, described impeller and described washing tub Before, described rotary drum washing machine can also open the spraying of described rotary drum washing machine, washes to described impeller Medicated clothing water spray in clothing machine, continues the 3rd preset duration, in order to increase the weight of medicated clothing, and then increases Impeller and the rotary inertia of described washing tub.Owing to medicated clothing is being entered by the rotary drum washing machine of inner rotor motor When row is weighed, needing impeller to rotate with washing tub, the rotation of the most described impeller and washing tub is used to simultaneously Amount is relatively big, when there is medicated clothing in rotary drum washing machine, rotates to the 3rd specified rotation at impeller and washing tub While rotary speed, medicated clothing also can be followed washing tub and be rotated to the 3rd specified rotary speed, and medicated clothing rotates Time centrifugal force further increase the rotary inertia of impeller and washing tub, when in described rotary drum washing machine Clothes weight less time, medicated clothing be that the rotary inertia that impeller and washing tub increase is less, therefore from 3rd specified rotary speed is decelerated to the 3rd time used by the 4th specified rotary speed and the 4th time Gap is little, may obtain medicated clothing according to difference or the ratio of described 3rd time with the 4th time Accurate weight, so stop power for motor before, described rotary drum washing machine can open spraying Continue the 3rd preset duration, the medicated clothing water spray in described rotary drum washing machine, increase the weight of medicated clothing, And then increase impeller and the rotary inertia of washing tub, then obtain the specified from the 3rd of impeller and washing tub Rotary speed is decelerated to the 3rd time of the 4th specified rotary speed, described 3rd time and the 4th time Difference bigger, it is possible to determining the weight of described medicated clothing, then rotary drum washing machine is when Normal Wash, Make flooding time shorten described 3rd preset duration, when determining described clothes washing equally, use water Amount.
The fuzzy Weighing method that the embodiment of the present invention provides, in the impeller laundry that motor is inner rotor motor When medicated clothing is weighed by machine, can first pass through control circuit is that described motor is powered so that described Impeller described in driven by motor and the washing tub of described rotary drum washing machine rotate to described 3rd specified simultaneously Rotary speed；After reaching the 3rd specified rotary speed, stop powering for described motor so that described Motor, described impeller and described washing tub are simultaneously in free moderating process, obtain described impeller It is decelerated to described 4th specified rotation speed from described 3rd specified rotary speed with described washing tub simultaneously Degree the 3rd time, described 4th specified rotary speed is not zero, may finally according to the described 3rd time Between, determine the weight of medicated clothing in described rotary drum washing machine.Or obtain in rotary drum washing machine, there is no clothing During thing, described impeller and washing tub are decelerated to the 4th specified rotation speed from the 3rd specified rotary speed simultaneously The 4th time used by degree, then according to the 3rd time and the difference of the 4th time or ratio, determine institute State the weight of medicated clothing in rotary drum washing machine.Compared to prior art, fuzzy described in the embodiment of the present invention claim Weighing method, it is not necessary to experience described impeller and slow down from the 3rd specified rotary speed with described washing tub simultaneously To the process of zero, it is thus only necessary to obtain described impeller with described washing tub simultaneously from the 3rd specified rotation speed Degree continued deceleration is to described 3rd time of the 4th specified rotary speed, described 4th specified rotary speed It is not zero, say, that the 3rd time is simultaneously fast from the 3rd specified rotation with washing tub less than described impeller Degree continued deceleration to speed is the time used by zero such that it is able to saves described rotary drum washing machine and determines and wash Wash the time of the weight of medicated clothing, and then shorten the time of laundry every time.Further, due to described ripple According to the 3rd time and the difference of the 4th time or ratio, wheel washer can also determine that described impeller is washed The weight of medicated clothing in clothing machine, it is possible to get rid of the impact caused due to rotary drum washing machine factor, improve institute State the accuracy of fuzzy Weighing method.
The embodiment of the present invention provides a kind of rotary drum washing machine 40, and the motor of described rotary drum washing machine 40 is External rotor electric machine, as shown in Figure 4, described rotary drum washing machine 40 includes control unit 401, obtains list Unit 402 and determine unit 403.
Described control unit 401 is used for: control described motor so that ripple described in described driven by motor The impeller of wheel washer 40 accelerates with washing tub to rotate to the 3rd specified rotary speed simultaneously；Control institute State motor so that described motor, described impeller and described washing tub are simultaneously in free moderating process.
Concrete, described rotary drum washing machine 40 can be described rotary drum washing machine 40 by control circuit Motor power, and then control described inner rotor motor accelerate rotate, drive described rotary drum washing machine 40 Impeller and washing tub rotate to the 3rd specified rotary speed simultaneously, described 3rd specified rotary speed is Set in advance, can be configured according to the concrete condition of rotary drum washing machine 40, the present invention implements This is not limited by example.Then can also stop powering for described inner rotor motor by control circuit, The most described motor, impeller and washing tub are in free deceleration regime.
Described acquiring unit 402, is used for obtaining described impeller and described washing tub simultaneously from the described 3rd Specified rotary speed is decelerated to the 3rd time of the 4th specified rotary speed, described 4th specified rotation speed Degree is not zero.
General, acquiring unit 402 can the timing when described moderating process starts, when described impeller Stop when described 3rd specified rotary speed is decelerated to four specified rotary speeies with washing tub simultaneously Timing, the time now recorded was for the 3rd time.
Optionally, being the rotary drum washing machine of inner rotor motor for motor, motor passes through belt driving band Dynamic impeller and washing tub rotate simultaneously, and the rotary speed of impeller is equal to the rotating speed of motor or proportional, Therefore the rotary speed of impeller and washing tub can be determined by the rotating speed of motor.Example, described electricity Machine can configure Hall element, motor every revolution, and Hall element exports 12 pulses, so Rear described rotary drum washing machine can obtain turning of motor by the umber of pulse that Hall element per second exports Speed.Concrete, it is assumed that the rotating speed of motor becomes 1:2 with the rotary speed of impeller and washing tub, impeller and 3rd specified rotary speed of washing tub is 100 revolutions per seconds, and corresponding umber of pulse is each second 600 Pulse, impeller is 30 revolutions per seconds with the 4th specified rotary speed of washing tub, and corresponding umber of pulse is every Second 180 pulses, then when the umber of pulse of Hall element output is each second 600, impeller Having reached the 3rd specified rotary speed with the rotary speed of washing tub, now timer starts timing and stops Only power for motor so that motor and impeller are in deceleration regime, when the pulse of Hall element output When number is reduced to each second 180, represent that the rotary speed of impeller and washing tub has reached the 4th specified Rotary speed, timer stops timing, and now rotary drum washing machine 40 can pass through acquiring unit 402 Obtaining the time that timer is recorded, the time i.e. got was for the 3rd time.In actual application, Acquiring unit 402 can also determine turning of motor by the change frequency of the electromotive force that motor exports Speed, or lenticular lenses is set on motor, the rotating speed of motor is determined by raster count.
Determine unit 403, for according to described 3rd time, determine in described rotary drum washing machine 40 The weight of medicated clothing.
Owing to the motor of described rotary drum washing machine 40 is inner rotor motor, so rotary drum washing machine 40 Need belt transmission between impeller and inner rotor motor, the rotor of described inner rotor motor at center, The rotary inertia making described inner rotor motor is less, when inner rotor motor drives institute by belt transmission Stating the impeller of rotary drum washing machine 40 when rotating, motor is less with the rotary inertia of impeller, and impeller is from the The time that three specified rotary speeies are decelerated to the 4th specified rotary speed is the shortest, when described impeller is done washing When there is medicated clothing in machine 40, due to the friction effects between medicated clothing and impeller, impeller is from the 3rd volume Determining rotary speed, to be decelerated to time of the 4th specified rotary speed shorter, if therefore rotary drum washing machine 40 Motor be inner rotor motor, when the medicated clothing in rotary drum washing machine being carried out fuzzy weighing, can make Obtaining impeller and washing tub rotates simultaneously, rotary inertia is relatively big, and medicated clothing can be followed washing tub and be turned together Dynamic, centrifugal force when medicated clothing rotates further increases rotary inertia, extends described impeller and laundry The deceleration time of bucket, therefore, it is possible to be decelerated to the by impeller and washing tub from the 3rd specified rotary speed 3rd time of four specified rotary speeies determines the weight of medicated clothing.
When the medicated clothing in rotary drum washing machine 40 is more, the rotary inertia of impeller, washing tub and medicated clothing Relatively big, the most described impeller and washing tub are decelerated to the 4th specified rotation speed from the 3rd specified rotary speed The 3rd time used by degree is longer；When the medicated clothing in rotary drum washing machine 40 is less, impeller, laundry The rotary inertia of bucket and medicated clothing is less, and the most described impeller and washing tub subtract from the 3rd specified rotary speed Speed is shorter to the 3rd time used by the 4th specified rotary speed, so the clothing in rotary drum washing machine 40 The weight of thing was directly proportional to the described very first time.
Optionally, time and clothing can be prestored in the control chip of described rotary drum washing machine 40 Thing weight correspondence table, described time table record corresponding from clothes weight different time is the most corresponding Clothes weight, then according to the 3rd time, the time table corresponding with clothes weight that inquiry prestores, Determine the weight of medicated clothing in rotary drum washing machine 40.
In actual application, it is also possible to prestore acceleration and clothing in the control chip of rotary drum washing machine Thing weight correspondence table, described acceleration table corresponding from clothes weight is corresponding, and different acceleration is corresponding Clothes weight, after getting for the 3rd time, can be according to the corresponding pass between time with acceleration System, obtains the second acceleration corresponding to described 3rd time, then according to the second acceleration, inquires about institute State acceleration table corresponding with clothes weight, i.e. can determine that the weight of described medicated clothing.
So, it is external rotor electric machine at rotary drum washing machine motor, and medicated clothing is entered by rotary drum washing machine When row is weighed, it is that motor is powered that described rotary drum washing machine can first pass through control unit so that described Impeller described in driven by motor and the washing tub of described rotary drum washing machine rotate to described 3rd specified simultaneously Rotary speed；After reaching the 3rd specified rotary speed, stop powering for described motor so that described Motor, described impeller and washing tub are simultaneously in free moderating process, are then obtained by acquiring unit Described impeller is decelerated to described 4th volume from described 3rd specified rotary speed with described washing tub simultaneously Determining the 3rd time of rotary speed, described 4th specified rotary speed is not zero, may finally be by really Cell, according to described 3rd time, determines the weight of medicated clothing in described rotary drum washing machine.Compared to existing There is technology, the rotary drum washing machine described in the embodiment of the present invention, it is not necessary to experience described impeller and wash with described Clothing bucket is decelerated to the process of zero from the 3rd specified rotary speed simultaneously, it is thus only necessary to obtain described impeller with Described washing tub is simultaneously from the institute of the 3rd specified rotary speed continued deceleration to the 4th specified rotary speed Stating for the 3rd time, described 4th specified rotary speed is not zero, say, that the 3rd time is less than described Impeller and washing tub are the time used by zero from the 3rd specified rotary speed continued deceleration to speed simultaneously, It is thus possible to save the time that described rotary drum washing machine determines the weight of washing medicated clothing, and then shorten every time The time of laundry.
Further, rotary drum washing machine 40 can also control described electricity by described control unit 401 Machine so that the while of impeller described in described driven by motor and described washing tub in described second preset duration Continue to rotate with described 3rd specified rotary speed.Example, rotary drum washing machine 40 can also pass through Control unit 401 continues as described motor and powers so that impeller and washing tub described in described driven by motor Continue to rotate, so so that impeller with described 3rd specified rotary speed in the second preset duration The impeller of washing machine and the specified rotary speed of washing tub stable maintain the 3rd specified rotary speed, Avoid and reduce described fuzzy Weighing method due to the speed instability of described impeller and washing tub Accuracy.
Example, described acquiring unit 402 is additionally operable to: the 4th time of acquisition, and described 4th time is When there is not medicated clothing in described rotary drum washing machine 40, described impeller and described washing tub are simultaneously from described 3rd specified rotary speed is decelerated to the time used by described 4th specified rotary speed.
In actual application, before rotary drum washing machine 40 dispatches from the factory, the 4th time can be pre-stored in impeller In the control chip of washing machine 40, when rotary drum washing machine 40 carries out fuzzy weighing to medicated clothing, permissible From described control chip, directly obtained for the 4th time.
Concretely comprising the following steps of the 4th time is obtained: when the laundry of described rotary drum washing machine 40 during initialization When there is not medicated clothing in Tong, described rotary drum washing machine 40 is described rotary drum washing machine by control circuit The motor of 40 is powered so that described in described driven by motor, impeller rotates to described with described washing tub simultaneously 3rd specified rotary speed, then stops powering for described motor by control circuit so that described electricity Machine, described impeller and described washing tub are simultaneously in free moderating process, obtain described impeller with described Washing tub is decelerated to used by described 4th specified rotary speed from described 3rd specified rotary speed simultaneously Time as the 4th time.
Described determine unit 403 specifically for: according to the difference of described 3rd time Yu described 4th time Value, determines the weight of described medicated clothing；Or according to the ratio of described 3rd time Yu described 4th time, Determine the weight of described medicated clothing.
Optionally, in the described difference according to described 3rd time Yu described 4th time, determine described During the weight of medicated clothing, time difference can be stored in advance in the control chip of described rotary drum washing machine 40 Table corresponding with clothes weight, the different time difference of described time difference table record corresponding from clothes weight Not corresponding clothes weight；Then can according to the difference of described 3rd time Yu described 4th time, The time difference table corresponding with clothes weight that inquiry prestores, i.e. can determine that the weight of described medicated clothing.
Optionally, at the described ratio according to described 3rd time Yu described 4th time, determine described During the weight of medicated clothing, time ratio can be prestored in the control chip of described rotary drum washing machine 40 It is worth table corresponding with clothes weight, described time ratios table record corresponding from the clothes weight different time The clothes weight that ratio is the most corresponding；Then according to the ratio of described 3rd time with described 4th time Value, the time ratios table corresponding with clothes weight that inquiry prestores, i.e. can determine that the weight of described medicated clothing.
Optionally, as it is shown in figure 5, described rotary drum washing machine 40 also includes water spray unit 404, institute State water spray unit 404 to spray water for the medicated clothing in described rotary drum washing machine 40, continue the 3rd pre- If duration, to increase the rotary inertia of impeller and described washing tub.Owing to the impeller of inner rotor motor is washed Clothing machine 40, when weighing medicated clothing, needs impeller to rotate with washing tub simultaneously, the most described ripple The rotary inertia of wheel and washing tub is relatively big, when there is medicated clothing in rotary drum washing machine 40, at impeller and Washing tub rotates while the 3rd specified rotary speed, and medicated clothing also can be followed washing tub and be rotated to the 3rd Specified rotary speed, centrifugal force when medicated clothing rotates further increases the rotation of impeller and washing tub and is used to Amount, if the clothes weight in described rotary drum washing machine 40 is less, the centrifugal force of medicated clothing the ripple increased The rotary inertia of wheel and washing tub is less, is therefore decelerated to the 4th specified rotation from the 3rd specified rotary speed The 3rd time used by rotary speed is little with the gap of the 4th time, it is impossible to by the 3rd time and the 4th The difference of time or ratio, determine the accurate weight of medicated clothing, so before stopping powering for motor, Described rotary drum washing machine 40 can be opened spraying and continue the 3rd preset duration, to described rotary drum washing machine Medicated clothing water spray in 40, increases the weight of medicated clothing, and then increases impeller and the rotary inertia of washing tub, Then obtain impeller and washing tub is decelerated to the 4th specified rotary speed from the 3rd specified rotary speed The 3rd time, described 3rd time is relatively big, the biggest with the difference of the 4th time, it is possible to determine institute Stating the weight of medicated clothing, then rotary drum washing machine is when Normal Wash so that flooding time shortens described the Three preset duration, determine water consumption during described clothes washing equally.
The embodiment of the present invention provides a kind of motor to be the rotary drum washing machine of inner rotor motor, is entering medicated clothing When row is weighed, can first pass through control unit is that described motor is powered so that described driven by motor institute The washing tub stating impeller and described rotary drum washing machine rotates to described 3rd specified rotary speed simultaneously；Reach After the 3rd specified rotary speed, stop powering for described motor so that described motor, described ripple Wheel and described washing tub are simultaneously in free moderating process, then obtain described impeller by acquiring unit It is decelerated to described 4th specified rotation speed from described 3rd specified rotary speed with described washing tub simultaneously 3rd time of degree, described 4th specified rotary speed is not zero, and may finally be determined by unit root According to described 3rd time, determine the weight of medicated clothing in described rotary drum washing machine.Or pass through acquiring unit When acquisition does not has medicated clothing in rotary drum washing machine, described impeller and washing tub are simultaneously from the 3rd specified rotation Speed reduction, to the 4th time used by the 4th specified rotary speed, is then determined by unit according to The difference of three times and the 4th time or ratio, determine the weight of medicated clothing in described rotary drum washing machine.Phase Compared with prior art, the rotary drum washing machine described in the embodiment of the present invention, it is not necessary to experience described impeller with Described washing tub is decelerated to the process of zero simultaneously from the 3rd specified rotary speed, it is thus only necessary to obtain described Impeller and described washing tub are simultaneously fast to the 4th specified rotation from the 3rd specified rotary speed continued deceleration Described 3rd time of degree, described 4th specified rotary speed is not zero, say, that the 3rd time is little In described impeller and washing tub simultaneously from the 3rd specified rotary speed continued deceleration to speed be used by zero Time such that it is able to save described rotary drum washing machine and determine time of weight of washing medicated clothing, and then Shorten the time of laundry every time.Further, due to described rotary drum washing machine can also according to the 3rd time Between with the difference of the 4th time or ratio, determine the weight of medicated clothing in described rotary drum washing machine, it is possible to row Except the impact caused due to rotary drum washing machine factor, improve the accuracy of described fuzzy Weighing method.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention not office Being limited to this, any those familiar with the art, can in the technical scope that the invention discloses Readily occur in change or replace, all should contain within protection scope of the present invention.Therefore, the present invention Protection domain should be as the criterion with described scope of the claims.

Claims (10)

1. a fuzzy Weighing method, it is characterised in that for rotary drum washing machine, described impeller The motor of washing machine is external rotor electric machine, and described fuzzy Weighing method includes:
The impeller of rotary drum washing machine described in described driven by motor accelerates to rotate to the first specified rotation speed Degree；
Described motor and described impeller are simultaneously in free moderating process, obtain described impeller from institute State the first specified rotary speed and be decelerated to the very first time of the second specified rotary speed, described second Specified rotary speed is not zero；
According to the described very first time, determine the weight of medicated clothing in described rotary drum washing machine；
Described according to the described very first time, determine in described rotary drum washing machine the weight of medicated clothing it Before, described method also includes:
Obtained for the second time, when described second time is to there is not medicated clothing in described rotary drum washing machine, Described impeller is decelerated to used by described second specified rotary speed from described first specified rotary speed Time；
Described according to the described very first time, determine that in described rotary drum washing machine, the weight of medicated clothing includes:
According to the difference of the described very first time Yu described second time, determine the weight of described medicated clothing；
Or according to the ratio of the described very first time Yu described second time, determine described medicated clothing Weight.
Fuzzy Weighing method the most according to claim 1, it is characterised in that at described electricity Machine drives the impeller of described rotary drum washing machine to accelerate to rotate after the first specified rotary speed, institute Method of stating also includes:
The impeller of rotary drum washing machine described in described driven by motor continues with institute in the first preset duration State the first specified rotary speed to rotate.
3. a rotary drum washing machine, the motor of described rotary drum washing machine is external rotor electric machine, and it is special Levy and be,
Described rotary drum washing machine includes that control unit, described control unit are used for:
Control described motor so that the impeller of rotary drum washing machine described in described driven by motor accelerates rotation Go to the first specified rotary speed；
Control described motor so that described motor and described impeller are simultaneously in free moderating process；
Described rotary drum washing machine also includes acquiring unit, is used for obtaining described impeller from described first Specified rotary speed is decelerated to the very first time of the second specified rotary speed, described second specified rotation Rotary speed is not zero；
Determine unit, for according to the described very first time, determine medicated clothing in described rotary drum washing machine Weight；
Described acquiring unit is additionally operable to:
Obtained for the second time, when described second time is to there is not medicated clothing in described rotary drum washing machine, Described impeller is decelerated to used by described second specified rotary speed from described first specified rotary speed Time；
Described determine unit specifically for:
According to the difference of the described very first time Yu described second time, determine the weight of described medicated clothing；
Or according to the ratio of the described very first time Yu described second time, determine described medicated clothing Weight.
Rotary drum washing machine the most according to claim 3, it is characterised in that
Described control unit is additionally operable to:
Control described motor so that described in described driven by motor, the impeller of rotary drum washing machine is first Continue in preset duration to rotate with described first specified rotary speed.
5. a fuzzy Weighing method, it is characterised in that for rotary drum washing machine, described impeller The motor of washing machine is inner rotor motor, and described fuzzy Weighing method includes:
The impeller of rotary drum washing machine described in described driven by motor and washing tub accelerate to rotate to the simultaneously Three specified rotary speeies；
Described motor, described impeller and described washing tub are simultaneously in free moderating process, obtain It is specified that described impeller and described washing tub are decelerated to the 4th from described 3rd specified rotary speed simultaneously 3rd time of rotary speed, described 4th specified rotary speed is not zero；
According to described 3rd time, determine the weight of medicated clothing in described rotary drum washing machine；
Described according to described 3rd time, determine in described rotary drum washing machine the weight of medicated clothing it Before, described method also includes:
Obtained for the 4th time, when described 4th time is to there is not medicated clothing in described rotary drum washing machine, Described impeller is decelerated to the described 4th from described 3rd specified rotary speed with described washing tub simultaneously Time used by specified rotary speed；
Described according to described 3rd time, determine that in described rotary drum washing machine, the weight of medicated clothing includes:
According to the difference of described 3rd time Yu described 4th time, determine the weight of described medicated clothing；
Or according to the ratio of described 3rd time Yu described 4th time, determine described medicated clothing Weight.
Fuzzy Weighing method the most according to claim 5, it is characterised in that at described electricity Machine drives the impeller of described rotary drum washing machine to accelerate with washing tub to rotate to the 3rd specified rotation simultaneously After speed, described method also includes:
The while of impeller described in described driven by motor and described washing tub in described second preset duration Continue to rotate with described 3rd specified rotary speed.
7. according to the fuzzy Weighing method described in claim 5 or 6, it is characterised in that in institute State before motor, described impeller and described washing tub be simultaneously in free moderating process, described side Method also includes:
Medicated clothing water spray in described rotary drum washing machine, continues the 3rd preset duration.
8. a rotary drum washing machine, the motor of described rotary drum washing machine is inner rotor motor, and it is special Levy and be,
Described rotary drum washing machine includes that control unit, described control unit are used for:
Control described motor so that the impeller of rotary drum washing machine described in described driven by motor with wash Clothing bucket accelerates to rotate to the 3rd specified rotary speed simultaneously；
Control described motor so that described motor, described impeller and described washing tub are simultaneously in Free moderating process；
Described rotary drum washing machine also includes acquiring unit, is used for obtaining described impeller and described laundry Bucket is simultaneously when described 3rd specified rotary speed is decelerated to the 3rd of the 4th specified rotary speed the Between, described 4th specified rotary speed is not zero；
Determine unit, for according to described 3rd time, determine medicated clothing in described rotary drum washing machine Weight；
Described acquiring unit is additionally operable to:
Obtained for the 4th time, when described 4th time is to there is not medicated clothing in described rotary drum washing machine, Described impeller is decelerated to the described 4th from described 3rd specified rotary speed with described washing tub simultaneously Time used by specified rotary speed；
Described determine unit specifically for:
According to the difference of described 3rd time Yu described 4th time, determine the weight of described medicated clothing；
Or according to the ratio of described 3rd time Yu described 4th time, determine described medicated clothing Weight.
Rotary drum washing machine the most according to claim 8, it is characterised in that
Described control unit is additionally operable to:
Control described motor so that impeller described in described driven by motor exists with described washing tub simultaneously Continue in described second preset duration to rotate with described 3rd specified rotary speed.
Rotary drum washing machine the most according to claim 8 or claim 9, it is characterised in that described Rotary drum washing machine also includes water spray unit, for the medicated clothing water spray in described rotary drum washing machine, Continue the 3rd preset duration.
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CN106436179A (en) * 2016-10-10 2017-02-22 南京航空航天大学 Weighing method of industrial roller washing machine
CN110016780B (en) * 2018-01-08 2022-11-04 青岛海尔洗衣机有限公司 Emergency control method for washing machine
CN109853188A (en) * 2018-12-28 2019-06-07 珠海格力电器股份有限公司 Washing machine control method and device
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Effective date of registration: 20170302

Address after: 266736 Qingdao, Pingdu City, South Village, Hisense Road, No. 8, No.

Patentee after: Hisense (Shandong) refrigerator Co., Ltd.

Address before: 528303 Ronggui City, Foshan province Shunde district town of Hong Kong Road, No. 8, No.

Patentee before: Hisense Ronshen (Guangdong) Refrigerator Co., Ltd.