CN1152047A - Drying stroke cotnrol method for washing machine - Google Patents
Drying stroke cotnrol method for washing machine Download PDFInfo
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- CN1152047A CN1152047A CN96122413A CN96122413A CN1152047A CN 1152047 A CN1152047 A CN 1152047A CN 96122413 A CN96122413 A CN 96122413A CN 96122413 A CN96122413 A CN 96122413A CN 1152047 A CN1152047 A CN 1152047A
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- acceleration
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- maximum
- change amount
- motor rotation
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- Control Of Washing Machine And Dryer (AREA)
- Control Of Velocity Or Acceleration (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention provides a method for controlling the drying operation of the washing machine, which comprises the rotational quantity, maximum and minimum acceleration and the acceleration change quantity of the motor which are initialized through the PMW[0]working pattern of the driving motor; Whether the scheduled time of the motor passes by; if the scheduled time is not over, the minimum speed is measured and compared with the maximum allowable reduction quantity; if the scheduled time is passed, the maximum acceleration, the minimum acceleration and the rotational quantity are measured and whether the washing bucket is ensured to rotate one circle; if the washing bucket is ensured to rotate one circle, the change quantity of the measured acceleration is compared with the maximum acceleration; if the change quantity of the measured acceleration is bigger than the maximum acceleration, whether the other scheduled time of the motor passes by or not ; if the other scheduled time of the motor passes by, the acceleration change quantity is compared with the maximum allowable acceleration.
Description
The present invention relates to a kind of washing machine, particularly relate to the method for a kind of control washing machine its drying speed of sensing in drying process (dryingstroke).
Fig. 1 represents a kind of washing machine of routine.As shown in Figure 1, conventional washing machine comprises a main body 1, one cover 2, bucket 3 (they being wash bucket) in one, an outer bucket 4, the support stick 5 of a plurality of supportive bodies 1 and outer bucket 4, one is installed in the motor 6 on one side of outer bucket 4 bottoms, 7, one of one velocity sensors are used to control microcomputer 8 and safety switch 9 that is used for the outer bucket vibration of sensing situation of whole system.
As shown in Figure 2, the control device of this conventional washing machine comprises a current transformer 11 that alternating current is become DC current; An inverter 12 that power supply is connected to motor 6; A microcomputer 8 of carrying out various control operations; A current foldback circuit 13; Switch drive (gate driving) circuit 14 that is used to drive the switch element of inverter 12; The rotor-position Ha of a detection motor, Hb, the rotor position detection circuit 15 of Hc; And a modulator/buffer circuits 16, be used to modulate the output PWMo and the switching drive signal Pgout of microcomputer 8, and as buffer; Also comprise one at the safety switch 9 that dries stage sense vibrations situation; With a signal conversion circuit 10.
As shown in Figure 3, owing to the vibration that barrel center can cause outer bucket 4 that departs from of clothing, safety switch 9 produces displacement during this vibration, and safety switch 9 changes according to its displacement.Here, displacement dmin is meant the displacement width of switch according to the vibratory output of generation between switch 9 and outer bucket 4.In other words, if the displacement of safety switch 9 is lower than dmin, spin-drying operation is proceeded, even outer bucket 4 contacts also harmless with safety switch 9.Otherwise when the displacement of safety switch 9 surpasses dmin, then spin-drying operation stops immediately, continue this spin-drying operation again after afterwards will off-centered clothes placing balance.
The spin-drying operation of the washing machine of this structure is described as follows:
Fig. 4 is the flow chart of the drying stroke cotnrol method of conventional washing machine.Referring to Fig. 4, in the washing machine of routine, if employing AC power, motor turns round with predetermined period of time, see step S101, step S102 washing machine determine safety switch signal Ps whether according to safety switch 9 and outside the vibratory output that produces between the bucket 4 and be in high level (as shown in Figure 5).At this moment, motor is measured the rotor position detection signal Ha that is obtained by rotor position detection circuit 15, Hb, Hc in controller 8.If safety switch signal Ps is in high level, detect the time T that safety switch signal Ps maintains high level at step S103 motor
HIf judge the time T that records in step 104
HLess than a regular time T
HM, as shown in Figure 5, then control the PWM of input in advance at step S105 modulator/buffer circuits 16
oWorking method, thereby control motor speed are for example carried out spin-drying operation up to finishing the drying time at step S106 with above-mentioned motor speed from the fixing velocity mode that dries, and this spin-drying operation is finished after the inertia idle running of step S107 motor finishes.
Fig. 6 represent according to behind the electric motor starting at the fixing drying velocity mode under the control of the PWMo of motor working method of the displacement of the safety switch during the spin-drying operation.
But, traditional method defectiveness of the drying process of this control washing machine, promptly it can only measure the vibration situation on the outer bucket top that surpasses predetermined vibration displacement dmin.In addition, if the bottom of spin dryer tube occur a serious left side/right side vibration or on/vibrate down, then can not detect its vibratory output.Therefore, this can cause producing strong noise in the drying process.And, support stick, inside/outside bucket and body of the washing machine are worn, and such abrasion will bring many unfavorable, reduce the life-span of washing machine.If especially wash bucket is partial to the position that does not have safety switch suddenly, be difficult to realize sense operation.Therefore, washing machine may be badly damaged, and user's safety is constituted a threat to.
The purpose of this invention is to provide a kind of method of controlling the drying process of washing machine, it has eliminated limitation and the deficiency that above-mentioned prior art exists basically.
Hereinafter will introduce feature of the present invention and superiority, they will can be found out from following explanation on the one hand, also can know from experience out when enforcement is of the present invention on the other hand.Purpose of the present invention and other beneficial effect will be realized by the scheme that provides in specification and claims and accompanying drawing.
Realize purpose of the present invention and beneficial effect, from embodiment and generality are described as can be known, the method of the drying process of control washing machine of the present invention may further comprise the steps: (a) adopt PMWo working method initialization peak acceleration under the situation of drive motors, minimum acceleration, acceleration change amount and motor rotation amount; (b) determine the motor predetermined period of time t1 that whether turned round; (c) if as yet through the predetermined motor rotation time cycle, the amount that the speed of measuring reduces, and itself and a maximum are allowed to reduce value compare; (d) if passed through the time of predetermined motor rotation, measure peak acceleration, minimum acceleration and rotation amount determine then whether the wash water bucket rotates a circle; (e), compare acceleration change amount and peak acceleration if wash bucket rotates a circle; (f) if the acceleration change amount, is determined the motor predetermined period of time that whether turned round greater than peak acceleration; (g) if passed through the schedule operating time of motor, degree of will speed up variable quantity and maximum permissible acceleration are relatively.
Below accompanying drawing be used for further understanding the present invention, and accompanying drawing is a part of specification, illustrates embodiments of the invention, combines explanation principle of the present invention with the word segment of specification.Accompanying drawing is:
Fig. 1 represents the structure of conventional washing machine;
Fig. 2 represents the detailed circuit diagram of inner controller of washer;
The mode of operation of the safety switch of Fig. 3 presentation graphs 1;
Fig. 4 is the flow chart of the washing machine drying stroke cotnrol method of routine;
Fig. 5 is the oscillogram of relative section during the conventional washing machine spin-drying operation of expression;
Fig. 6 is the curve of the drying velocity mode of conventional washing machine;
Fig. 7 represents washing machine structure of the present invention;
Fig. 8 is the detailed circuit diagram of the washing machine internal control device of Fig. 7;
Fig. 9 is illustrated in during the wash bucket rotation and places the various vibrational states that cause because clothing departs from the center;
Figure 10 is the flow chart of the drying stroke cotnrol method of washing machine of the present invention;
Figure 11 is the oscillogram of relative section during washing machine spin-drying operation of the present invention;
Figure 12 a is meant because the clothing biasing causes the velocity perturbation curve of wash bucket vibration, represents the situation of drying time t＜t1.
Figure 12 b is meant because the clothing biasing causes the velocity perturbation curve of wash bucket vibration, represents the situation of drying time t＞t1;
Figure 13 is the curve map of the drying speed control mode of washing machine of the present invention.
Following reference example in detail shown in the drawings preferred embodiment of the present invention.
As shown in Figure 7, washing machine of the present invention comprises main body 1; Cover 2; Interior bucket is a wash bucket 3; Outer bucket 4; The support stick 5 of a plurality of supportive bodies 1 and outer bucket 4; One is installed in the motor 6 on one side of outer bucket 4 bottoms; Velocity sensor 7 is used to analyze speed data and sense vibrations amount from the rotor position detection signal sensing; Microcomputer 8 with the control whole system.
As shown in Figure 8, the control device of washing machine of the present invention comprises a current transformer 11 that interchange is become direct current; A control adds to the inverter 12 of the power supply of motor 6; A microcomputer 8 of carrying out various control operations; One current foldback circuit 13 is used for detection of excessive current and holding circuit; Switch driving circuit 14 is used to drive the switch element of inverter 12; Rotor position detection circuit 15 is used to detect the position Ha of the rotor of motor 6, Hb, Hc; And modulator/buffer circuits 16 is used to modulate the output PWMo and the switching drive signal Pgout of microcomputer 8, and plays the buffer effect.
In addition, Fig. 9 has showed when wash bucket rotates owing to clothing departs from the center and has placed the various vibration situations that cause, for example right side on top/left side vibration, and the right side of bottom/left side vibration, on/vibrate down and a right side/left side vibrates.
Spin-drying operation with washing machine of said structure of the present invention will be described below.
As shown in figure 10, in washing machine of the present invention, as the AC power motor of feeding being made the motor entry into service, then by prearranged signals PWMo of microprocessor 8 outputs, as shown in figure 11 at step S201.At step S202, control motor with fixing drying velocity mode running by the PWMo working method of control microprocessor 8 outputs.In step S203, Rmax (maximal rate), Rmin (minimum speed), Δ R (velocity variable) and ∑ R (amount of spin that adds up) are initialized as " 0 ", here, motor is measured rotor position detection signal Ha, Hb, Hc, this is to adopt rotor position detection circuit 15 to realize under microcomputer 8 controls, as shown in figure 11.
Determine at step S204 whether the constant-speed section of the electric motor driven cycle of front has passed through this predetermined period of time t1, i.e. (t＜t1),, measure velocity variable (Δ R=Δ Rmax-Δ Rmin) at step S205 if this predetermined period of time t1 passes by.Then determine at step S206 whether measured velocity variable allows variable quantity (fixed value) more than or equal to this maximum, if the velocity variable of being surveyed allows variable quantity greater than this maximum, the clothing bias levels of then determining to put into wash bucket is excessive, so S207 stops motor rotation in step, in adjusting wash bucket after the balanced degree of clothing, at step S208 drive motors again.If the velocity variable that records is less than this maximum magnitude (fixed value), operation turns back to the step S202 of front.
Here provide the equation of clothing biasing causing velocity perturbation:
RPM(t)＝RPM
avg(t)+K
p×sin(2πt/T
f)＝R
avg(0)+α×t+K
p×sin(2πt/T
f)……(1)
In the formula:
RPM
Avg: average speed, R
Avg(0): average speed initial value, K
p: velocity perturbation proportionality constant-clothing biasing proportionality constant, α: basic acceleration, T
f: vibration period=1/RPM
Avg
If t＜t1, Δ R=RPM (tn)-RPM (tm)=α (tn-tm)+K
p* { sin (2 π t/T
f)-sin (2 π t/T
f) ... (2)
If t＞t1,
RPM(t)′＝dRPM(t)/dt＝α+K
p×sin(2πt/T
f)×cos(2πt/T
f)
Δ′R＝RPM(tn)′-RPM(tm)′＝K
p×sin(2πt/T
f)＝{cos(2πt/T
f)-sin(2πt/T
f)}……(3)
Above-mentioned equation can be referring to accompanying drawing 12a and 12b.
If the initial constant speed of motor-driven is at Duan Shangwei process preset time cycle t1, promptly (no matter t＜t1) in order to record the vibratory output of wash bucket, and is at acceleration or Chang Su, then record each rotation of this wash bucket, that is to say to record in period T at step S209
fIn maximal rate (R ' max), minimum speed (R ' min) and amount of spin ∑ R.
The Δ R that should be pointed out that initial sensing in constant-speed section is proportional to vibratory output (α=0).But under the situation of acceleration, i.e. α ≠ 0 o'clock, Δ R comprises α, at this moment can not a measuring vibrations amount.Therefore in order to record in constant speed or to add/slow down vibratory output under arbitrary situation,, then can obtain the information that is directly proportional with pure vibratory output and the influence of the acceleration alpha of not setovered if measure acceleration change amount Δ R ' in the mode of equation (3).
Whether equal ∑ R by the amount of spin of determining each circle at step S210, and compare with maximum permissible acceleration variation delta R ' max (fixed value) at step S211 degree of will speed up variation delta R '.This maximum permissible acceleration variation delta R ' max is an experiment value, and it is included in the acceleration change in this predetermined section.If the acceleration change amount that records can determine that less than this maximum permissible acceleration changing value (fixed value) the clothing bias levels is excessive, so stop motor rotation at step S207.After then adjusting the clothing in the balance wash bucket, S208 restarts motor in step.If the acceleration change amount that predicts greater than maximum permissible acceleration changing value (fixed value), then determines at step S212 whether preset time cycle t2 passes through again.If the preset time cycle t2 of institute does not also surpass, then operation enters step S202.
If step S213 determine that preset time cycle t2 has pass by and acceleration change amount Δ R ' greater than R ' max, S215 is accelerated to quick R3 with finally drying speed in step, to weaken vibratory output as shown in figure 13, it is time-up up to drying in step S218 to continue this spin-drying operation, stop in case remaining inertia rotates, the drying process is all at step S219.
If acceleration change amount Δ R ' then compares with R ' min less than R ' max.If this acceleration change amount is greater than R ' min, then this vibratory output is medium, thereby this final drying speed is set to middling speed R2 at step S216, continues spin-drying operation up to regularly finishing in step 218, and rotate end as inertia, in step S219, finish the drying step.
If the acceleration change amount is less than maximum permissible acceleration variable quantity R ' max, then compare with R ' min, because the acceleration change amount is less than R ' min, then vibratory output is little, thereby be set to R1 at a slow speed in finally drying speed of step S217, it is time-up up to drying to continue spin-drying operation at step S218.Finish if motor inertia rotates, be all in step S219 drying process.
As mentioned above, the method for this control washing machine spin-drying operation can be controlled the speed that wash bucket dries, thereby reduces vibrating noise, prevents the mal-operation of washing machine, thereby has prolonged the service life of washing machine.
Obviously, those skilled in the art can make various various improvement and variations within the scope of the present invention to drying stroke cotnrol method of the present invention, and these improvement projects all should be encompassed in the scope of appended claim and its equivalent.
Claims (8)
1, a kind of method of controlling the washing machine spin-drying operation may further comprise the steps:
(a) with amount of spin, maximal rate, minimum speed and the velocity variable of the PMWo working method initialization motor of control drive motors;
(b) determine whether described motor has turned round through a preset time cycle t1;
(c) if the predetermined period of time of described motor rotation is not pass by as yet, measure velocity variable, the value that will measure allows variable quantity relatively with maximum then;
(d) if the predetermined period of time of described motor rotation is pass by, measure peak acceleration, minimum acceleration and amount of spin determine then whether wash bucket rotates a circle;
(e), this acceleration change amount is compared with described peak acceleration if wash bucket rotates a circle;
(f) if described acceleration change amount, determines whether described motor rotation passes through another preset time cycle greater than described peak acceleration;
(g) if described another motor rotation predetermined period of time is pass by, described acceleration change amount is compared with maximum permissible acceleration.
2, method as claimed in claim 1, wherein said step (c) comprises the following steps:
If described velocity variable allows changing value greater than maximum, stop motor rotation, adjust the clothing of setovering in the wash bucket by the user;
If described velocity variable allows to change value less than maximum, continue spin-drying operation.
3, method as claimed in claim 1, wherein said step (e) may further comprise the steps: if described acceleration change amount stops motor rotation greater than maximum acceleration value, adjusted the clothing of biasing by the user.
4, method as claimed in claim 1, wherein said step (f) may further comprise the steps: if the predetermined period of time of described motor rotation is not pass by as yet, continue the spin-drying operation of clothing.
5, method as claimed in claim 1, wherein said step (g) comprise the following steps: to finish until spin-drying operation if described acceleration change amount greater than maximum permissible acceleration, is quickened described drying speed.
6, method as claimed in claim 1, wherein said step (g) comprise the following steps: to be averaged drying speed if described acceleration change amount equals described maximum permissible acceleration, finish up to spin-drying operation.
7, method as claimed in claim 1, wherein said step (g) comprise the following steps: to finish up to spin-drying operation if described acceleration change amount less than described maximum permissible acceleration variable quantity, reduces drying speed.
8, method as claimed in claim 1, if wherein the Yu Ding motor rotation time cycle pass by, then measure basic acceleration alpha.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR33708/95 | 1995-10-02 | ||
| KR1019950033708A KR0161919B1 (en) | 1995-10-02 | 1995-10-02 | Dehydration control method of a washing machine |
| KR33708/1995 | 1995-10-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1152047A true CN1152047A (en) | 1997-06-18 |
| CN1098945C CN1098945C (en) | 2003-01-15 |
Family
ID=19429075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96122413A Expired - Fee Related CN1098945C (en) | 1995-10-02 | 1996-10-02 | Drying stroke cotnrol method for washing machine |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH09131486A (en) |
| KR (1) | KR0161919B1 (en) |
| CN (1) | CN1098945C (en) |
| AU (1) | AU689727B2 (en) |
| TW (1) | TW305894B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575405A (en) * | 2009-09-15 | 2012-07-11 | Lg电子株式会社 | Method for washing and washing machine |
| CN107099973A (en) * | 2017-05-31 | 2017-08-29 | 广东威灵电机制造有限公司 | Unbalance detection, washing machine and the storage medium of washing machine drum body |
| CN107130393A (en) * | 2017-05-31 | 2017-09-05 | 广东威灵电机制造有限公司 | Roller washing machine and its control method, device and machinable medium |
| CN107245839A (en) * | 2017-05-31 | 2017-10-13 | 广东威灵电机制造有限公司 | Control method for drum washing machine, device, machinable medium and roller washing machine |
| CN107287819A (en) * | 2017-05-31 | 2017-10-24 | 广东威灵电机制造有限公司 | Roller washing machine and its control method, device and machinable medium |
| CN113026296A (en) * | 2019-12-09 | 2021-06-25 | 青岛海尔洗衣机有限公司 | Washing machine control method and washing machine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100474898B1 (en) * | 2002-04-09 | 2005-03-08 | 엘지전자 주식회사 | Controlling method of spinning in a washing machine |
| KR100493288B1 (en) * | 2002-10-10 | 2005-06-02 | 엘지전자 주식회사 | Method for controlling drum type washer |
| JP6326634B2 (en) * | 2015-02-27 | 2018-05-23 | パナソニックＩｐマネジメント株式会社 | Washing machine |
| KR102598865B1 (en) | 2016-12-23 | 2023-11-06 | 삼성전자주식회사 | Washing machine and controlling method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8403116A (en) * | 1984-10-12 | 1986-05-01 | Philips Nv | COMPRESSOR. |
| JPS628790A (en) * | 1985-07-02 | 1987-01-16 | シャープ株式会社 | Dehydration controller |
| JPS63164994A (en) * | 1986-12-27 | 1988-07-08 | 日本建鐵株式会社 | Dehydration operation control method of washing machine |
| JPH04105698A (en) * | 1990-08-27 | 1992-04-07 | Toshiba Corp | Dehydrator |
| JPH05103895A (en) * | 1991-10-15 | 1993-04-27 | Toshiba Corp | Abnormal vibration detector for washing machine |
| JP2966610B2 (en) * | 1991-12-19 | 1999-10-25 | 株式会社東芝 | Dehydration combined washing machine |
-
1995
- 1995-10-02 KR KR1019950033708A patent/KR0161919B1/en not_active IP Right Cessation
-
1996
- 1996-09-11 TW TW085111083A patent/TW305894B/zh not_active IP Right Cessation
- 1996-09-27 JP JP8255913A patent/JPH09131486A/en active Pending
- 1996-10-02 AU AU67981/96A patent/AU689727B2/en not_active Ceased
- 1996-10-02 CN CN96122413A patent/CN1098945C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575405A (en) * | 2009-09-15 | 2012-07-11 | Lg电子株式会社 | Method for washing and washing machine |
| CN102575405B (en) * | 2009-09-15 | 2016-01-20 | Lg电子株式会社 | Washing methods and washing machine |
| CN107099973A (en) * | 2017-05-31 | 2017-08-29 | 广东威灵电机制造有限公司 | Unbalance detection, washing machine and the storage medium of washing machine drum body |
| CN107130393A (en) * | 2017-05-31 | 2017-09-05 | 广东威灵电机制造有限公司 | Roller washing machine and its control method, device and machinable medium |
| CN107245839A (en) * | 2017-05-31 | 2017-10-13 | 广东威灵电机制造有限公司 | Control method for drum washing machine, device, machinable medium and roller washing machine |
| CN107287819A (en) * | 2017-05-31 | 2017-10-24 | 广东威灵电机制造有限公司 | Roller washing machine and its control method, device and machinable medium |
| CN107287819B (en) * | 2017-05-31 | 2019-07-05 | 广东威灵电机制造有限公司 | Roller washing machine and its control method, device and machine readable storage medium |
| CN107245839B (en) * | 2017-05-31 | 2019-07-12 | 广东威灵电机制造有限公司 | Control method for drum washing machine, device, machine readable storage medium and roller washing machine |
| CN113026296A (en) * | 2019-12-09 | 2021-06-25 | 青岛海尔洗衣机有限公司 | Washing machine control method and washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR0161919B1 (en) | 1998-12-15 |
| TW305894B (en) | 1997-05-21 |
| AU689727B2 (en) | 1998-04-02 |
| JPH09131486A (en) | 1997-05-20 |
| KR970021442A (en) | 1997-05-28 |
| AU6798196A (en) | 1997-04-10 |
| CN1098945C (en) | 2003-01-15 |
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Granted publication date: 20030115 Termination date: 20101002 |