CN102619056A - Dehydrating rotation speed control method of full-automatic washing machine - Google Patents
Dehydrating rotation speed control method of full-automatic washing machine Download PDFInfo
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- CN102619056A CN102619056A CN2012101218279A CN201210121827A CN102619056A CN 102619056 A CN102619056 A CN 102619056A CN 2012101218279 A CN2012101218279 A CN 2012101218279A CN 201210121827 A CN201210121827 A CN 201210121827A CN 102619056 A CN102619056 A CN 102619056A
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Abstract
The invention discloses a dehydrating rotation speed control method of a full-automatic washing machine. The dehydrating rotation speed control method, in sequence, comprises the following steps of: a) dehydrating at low speed; b) detecting actual rotation speed usRPM-fix of a drum; c) comparing the actual rotation speed usRPM-fix of the drum and a set skip rotation speed SKIP-RPM; d) carrying out high speed dehydration; checking rotation speeds during full startup of a motor and partial startup of the motor in the high speed dehydration process; and adjusting a motor full-startup time and a motor partial-startup time according to the rotation speed during the full startup of the motor and the rotation speed during the partial startup of the motor so as to stabilize the average rotation speed at a target rotation speed; and e) detecting whether the high speed dehydration time passes a set time T1 or not and carrying out a step of controlling the finishing of the dehydration and the like. According to the invention, the motor full-startup time and the motor partial-startup time are adjusted according to the rotation speed during the full startup of the motor and the rotation speed during the partial startup of the motor so that the average rotation speed is stabilized at the target rotation speed; and the control method disclosed by the invention has the advantages of no need of fully shutting down the motor and greater accuracy for controlling the dehydration rotation speed. The dehydrating rotation speed control method disclosed by the invention has the advantages of simple hardware structure, low cost, good control effect and worthiness in generalization and application.
Description
[technical field]
The present invention relates to the dehydrating speed control method of automatic washing machine, in particular, is a kind of position phase control method that can improve rotating speed precise control property.
[background technology]
The dehydrating speed control method of automatic washing machine is divided three classes basically: fully energized control, position be control, VFC mutually.Wherein, The control effect of position phase control method, cost are all between the three; Its principle is: motor [full ON] and [part of O N] hocket; According to rotating speed adjustment [full ON] time, the rotating speed that descends during rotating speed=[the part of O N] that rises when making [full ON], thus make dehydrating speed be stabilized in rotating speed of target.
Existing position phase control method process is as shown in Figure 1, and the mean speed of 7kg reaches rotating speed of target, the mean speed of the 0kg rotating speed that departs from objectives.The standard deviation of 0kg is greater than the standard deviation of 7kg.This control method is not used speed probe, but judges the rotating speed of dehydration bucket through detecting voltage that motor advances phase electric capacity, has following problems:
When 1, rotating speed detects, motor necessary [full OFF] (see figure 1), the rotating speed rapid drawdown, dehydration this moment bucket knocks steel ladle especially easily, thereby revises rinsing, is unfavorable for energy-conservation.
2, this method can only detect the rotating speed of peak, and chip is according to rotating speed adjustment motor [full ON] time of peak, and [part of O N] time of motor is fixed, and the peak stabilization of speed is in a certain fixed value the most at last.Load in the bucket not simultaneously, through identical [part of O N] time, the rotating speed of decline is different, causes the mean speed rotating speed (see figure 1) that departs from objectives.
3, load is more little, and the rotating speed that identical [part of O N] time descends is many more, the big more (see figure 1) of standard deviation, and noise is big more.
[summary of the invention]
The object of the invention solves the problems of the prior art exactly; A kind of dehydrating speed control method of automatic washing machine is proposed; Can solve the problem such as hit bucket, mean speed departs from objectives, standard deviation is big that is prone to of phase controlling rotating speed, thereby reach the effect of energy-saving and noise-reducing.
Another purpose of the present invention is under the situation that adopts less hardware configuration, to improve the effect of phase controlling, thereby reaches low-cost, high performance effect.
For realizing above-mentioned purpose, the present invention proposes a kind of dehydrating speed control method of automatic washing machine, may further comprise the steps successively:
A) after the dehydration beginning, carry out the low speed dehydration;
B) the actual speed usRPM_fix of detection bucket;
C) rotating speed SKIP_RPM being jumped out in the actual speed usRPM_fix of bucket and setting compares; If the actual speed usRPM_fix of bucket jumps out rotating speed SKIP_RPM more than or equal to setting; Then get into d) step; If the actual speed usRPM_fix of bucket jumps out rotating speed SKIP_RPM less than setting, then return a) step;
D) carry out high speed dewatering; In the high speed dewatering process; Carrying out motor standard-sized sheet and the motor part rotating speed when separating detects; And the rotating speed during according to the motor standard-sized sheet and the motor part rotating speed when separating adjusts the time of motor standard-sized sheet and the time that motor part is separated, thereby the adjustment mean speed is stabilized in rotating speed of target;
Whether the time of e) detecting high speed dewatering has passed through setting-up time T1, if the time of high speed dewatering is not passed through setting-up time T1, then returns d) step, if the effluxion of high speed dewatering setting-up time T1, then dehydration finishes.
As preferably, said d) the high speed dewatering steps in sequence comprises step by step following:
D1) after high speed dewatering begins, carry out timing T;
D2) the actual speed usRPM_fix according to bucket sets motor wide-open time onst;
D3) set motor part and divide ETAD expected time of arrival and departure offst;
D4) whether timing T has passed through time T 2, if passed through time T 2, then gets into d5) step, if there is not elapsed time T2, then get into d6) step;
D5) be 1 to reading the sign assignment;
D6) motor carries out standard-sized sheet work in the motor wide-open time onst that sets;
D7) judge that whether motor is that standard-sized sheet or the value that reads sign are 1 for the first time; If motor is that for the first time standard-sized sheet or the value that reads sign are 1; Then get into d8) step, if motor is not that for the first time standard-sized sheet and the value that reads sign are not 1, then get into d9) step;
D8) read the rotating speed peak of peak;
D9) motor carries out the part work that goes into operation in part ETAD expected time of arrival and departure offst;
D10) judge motor whether be the first time portion separately, if motor be first time portion separately, then get into d11) step, portion separates if motor is not the first time, then gets into d14) step;
D11) read the rotating speed valley of minimum point;
Whether the difference of rotating speed valley of rotating speed peak and minimum point of d12) judging peak is more than or equal to setting deviate HENSA; If the difference of peak and valley is more than or equal to setting deviate HENSA; Then get into d13) step; If the difference of peak and valley then turns back to d4 less than setting deviate HENSA) step;
D13) reset part ETAD expected time of arrival and departure offst, return d4 then) step;
D14) interpretation reads whether the value of sign is 1, is 1 if read the value of sign, then gets into d15) step, be not 1 if read the value of sign, then return d4) step;
D15) read the tachometer value valley of minimum point;
D16) reading the sign assignment is zero;
D17) reset motor wide-open time onst according to (peak+valley)/2; Judge again at last whether timing T has reached e) setting-up time T1 in the step, if do not reach, then turn back to d4) step, if reached, then finish high speed dewatering.
As preferably, said d4) value of the time T 2 in the step is: 15s≤T2≤60s.
As preferably, said d4) value of the time T 2 in the step changes according to the value of timing T, and when T≤2 minute, the value of T2 is 15s～20s; When T＞2 minute, the value of T2 is 30s～60s.
As preferably, said d13) the part ETAD expected time of arrival and departure offst that resets in the step is less than d3) the part ETAD expected time of arrival and departure offst that sets in the step.
As preferably, said d3) the part ETAD expected time of arrival and departure offst value of setting in the step is 2.5s under the 50Hz power supply, be 4s under the 60Hz power supply, and the part ETAD expected time of arrival and departure offst value that d13) resets in the step is 1.2s under the 50Hz power supply, is 3s under the 60Hz power supply.
As preferably, said d2) the actual speed usRPM_fix of bucket is high more in the step, and the motor wide-open time onst that then sets is more little.
When as preferably, said d2) the actual speed usRPM_fix of bucket was 760 rev/mins in the step, the motor wide-open time onst value of setting was 2.7s under the 50Hz power supply, is 0.9s under the 60Hz power supply; When the actual speed usRPM_fix of bucket was 780 rev/mins, the motor wide-open time onst value of setting was 2.6s under the 50Hz power supply, is 0.8s under the 60Hz power supply.
Beneficial effect of the present invention: the rotating speed when rotating speed and the motor part of the present invention during according to the motor standard-sized sheet separated is adjusted the time of motor standard-sized sheet and the time that motor part is separated; Thereby the adjustment mean speed is stabilized in rotating speed of target; This control method need not implemented the motor complete shut-down; Thereby efficiently solve problem such as be prone to hit bucket, mean speed departs from objectives, standard deviation is big, make the control of dehydrating speed more accurate, reached the effect of energy-saving and noise-reducing simultaneously to a certain extent.The hardware configuration that the present invention relates to is simple, and cost is low, controls effectively, is worthy of popularization.
Characteristic of the present invention and advantage will combine accompanying drawing to be elaborated through embodiment.
[description of drawings]
Fig. 1 is the sketch map of existing position phase control method;
Fig. 2 is the related hardware block diagram of the inventive method;
Fig. 3 is the sketch map of position of the present invention phase control method;
Fig. 4 is the flow chart of the dehydrating speed control method of automatic washing machine of the present invention;
Fig. 5 is the flow chart of the dehydrating speed control method high speed dehydration of automatic washing machine of the present invention.
[specific embodiment]
Consult Fig. 2; In the control method of the present invention there be related hardware configuration: chip 1, motor 2 and speed probe 3; The speed probe 3 that can detect the rotating speed of bucket or motor 2 will detect data and send chip 1 to; Chip 1 comes the standard-sized sheet (or claiming: [full ON]) and the portion of governor motor 2 to separate the time of (or claiming: [part of O N]) according to the rotary speed information that detects, thereby makes mean speed be stabilized in rotating speed of target.Speed probe 3 can adopt Hall element.The Hall element sound construction, volume is little, and is in light weight, and the life-span is long, and is easy for installation, and power consumption is little, and frequency is high, vibration resistance, the pollution or the corrosion of not being afraid of dust, greasy dirt, steam and salt fog etc. are particularly suitable on washing machine, using.Speed probe also can adopt photoelectric cell simple in structure, that cost is low.
Consult Fig. 3, dotted line is represented mean speed (or title " rotating speed of target "), l among the figure
1Be that load is the actual speed of 7kg, l
2Be that load is the actual speed of 0kg, both all can reach rotating speed of target, the speed controlling better effects if.In the control method,, read the rotating speed of minimum point at minimum point B1, B2 at the peak A1 at certain hour interval, the rotating speed that A2 reads peak.
Consult Fig. 4, the dehydrating speed control method of automatic washing machine may further comprise the steps successively:
A) after the dehydration beginning, carry out the low speed dehydration;
B) the actual speed usRPM_fix of detection bucket;
C) rotating speed SKIP_RPM being jumped out in the actual speed usRPM_fix of bucket and setting compares; If the actual speed usRPM_fix of bucket jumps out rotating speed SKIP_RPM more than or equal to setting; Then get into d) step; If the actual speed usRPM_fix of bucket jumps out rotating speed SKIP_RPM less than setting, then return a) step;
D) carry out high speed dewatering; In the high speed dewatering process; Carrying out motor standard-sized sheet and the motor part rotating speed when separating detects; And the rotating speed during according to the motor standard-sized sheet and the motor part rotating speed when separating adjusts the time of motor standard-sized sheet and the time that motor part is separated, thereby the adjustment mean speed is stabilized in rotating speed of target;
Whether the time of e) detecting high speed dewatering has passed through setting-up time T1, if the time of high speed dewatering is not passed through setting-up time T1, then returns d) step, if the effluxion of high speed dewatering setting-up time T1, then dehydration finishes.
Consult Fig. 5, d) the high speed dewatering steps in sequence comprises step by step following:
D1) after high speed dewatering begins, carry out timing T;
D2) the actual speed usRPM_fix according to bucket sets motor wide-open time onst; Actual speed usRPM_fix is high more, and the motor wide-open time onst that then sets is more little, and for example: when the actual speed usRPM_fix of bucket was 760 rev/mins, the motor wide-open time onst value of setting was 2.7s under the 50Hz power supply, is 0.9s under the 60Hz power supply; When the actual speed usRPM_fix of bucket was 780 rev/mins, the motor wide-open time onst value of setting was 2.6s under the 50Hz power supply, is 0.8s under the 60Hz power supply;
D3) set motor part and divide ETAD expected time of arrival and departure offst;
D4) whether timing T has passed through time T 2, if passed through time T 2, then gets into d5) step, if there is not elapsed time T2, then get into d6) step; If T2 blanking time does not arrive, then do not detect rotating speed, do not adjust the value of onst yet, avoid adjustment too frequent.The time value of time T 2 is generally 15s≤T2≤60s, and the value of time T 2 can also change according to the value of timing T, and when T≤2 minute, the value of T2 is 15s～20s; When T＞2 minute, the value of T2 is 30s～60s;
D5) be 1 to reading the sign assignment;
D6) motor carries out standard-sized sheet work in the motor wide-open time onst that sets;
D7) judge that whether motor is that standard-sized sheet or the value that reads sign are 1 for the first time; If motor is that for the first time standard-sized sheet or the value that reads sign are 1; Then get into d8) step, if motor is not that for the first time standard-sized sheet and the value that reads sign are not 1, then get into d9) step;
D8) read the rotating speed peak of peak;
D9) motor carries out the part work that goes into operation in part ETAD expected time of arrival and departure offst;
D10) judge motor whether be the first time portion separately, if motor be first time portion separately, then get into d11) step, portion separates if motor is not the first time, then gets into d14) step;
D11) read the rotating speed valley of minimum point;
Whether the difference of rotating speed valley of rotating speed peak and minimum point of d12) judging peak is more than or equal to setting deviate HENSA; If the difference of peak and valley is more than or equal to setting deviate HENSA; Then get into d13) step; If the difference of peak and valley then turns back to d4 less than setting deviate HENSA) step;
D13) reset part ETAD expected time of arrival and departure offst, return d4 then) step; The part ETAD expected time of arrival and departure offst that resets is less than d3) the part ETAD expected time of arrival and departure offst that sets in the step; D3 for example) the part ETAD expected time of arrival and departure offst value of setting in the step is 2.5s under the 50Hz power supply; Under the 60Hz power supply 4s; D13 then) the part ETAD expected time of arrival and departure offst value that resets in the step is 1.2s under the 50Hz power supply, be 3s under the 60Hz power supply;
D14) interpretation reads whether the value of sign is 1, is 1 if read the value of sign, then gets into d15) step, be not 1 if read the value of sign, then return d4) step;
D15) read the tachometer value valley of minimum point;
D16) reading the sign assignment is zero;
D17) reset motor wide-open time onst according to (peak+valley)/2; Judge again at last whether timing T has reached e) setting-up time T1 in the step, if do not reach, then turn back to d4) step, if reached, then finish high speed dewatering.
This scheme is provided with the speed probe 3 of rotating speed that detects motor 2 or bucket on washing machine, make motor needn't [full OFF] also can carry out rotating speed and detect.Carry out 1 time when the 1st time [part of O N] and detect, carry out 1 rotating speed afterwards at regular intervals and detect.Each rotating speed that all detects 2 of peaks, minimum point.When detecting for the 1st time, calculate 2 difference, confirm ensuing [part of O N] time according to difference.In the detecting afterwards, calculate 2 mean speed, according to mean speed adjustment [full ON] time, [part of O N] time is fixed, and mean speed is stabilized in rotating speed of target the most at last.
The control method of prior art and the experiment effect of control method of the present invention compare: on 3 washing machines, and during test different electrical power frequency, the rotating speed when 7kg, 0kg.Experimental result shown in table one, existing control method capacity not simultaneously, the mean speed rotating speed 2～52 that departs from objectives changes, the mean speed of the present invention rotating speed 2～16 that departs from objectives changes, precise control property is original 3.25 times.
Table one:
The foregoing description is to explanation of the present invention, is not to qualification of the present invention, any scheme after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (8)
1. the dehydrating speed control method of automatic washing machine is characterized in that: may further comprise the steps successively:
A) after the dehydration beginning, carry out the low speed dehydration;
B) the actual speed usRPM_fix of detection bucket;
C) rotating speed SKIP_RPM being jumped out in the actual speed usRPM_fix of bucket and setting compares; If the actual speed usRPM_fix of bucket jumps out rotating speed SKIP_RPM more than or equal to setting; Then get into d) step; If the actual speed usRPM_fix of bucket jumps out rotating speed SKIP_RPM less than setting, then return a) step;
D) carry out high speed dewatering; In the high speed dewatering process; Carrying out motor standard-sized sheet and the motor part rotating speed when separating detects; And the rotating speed during according to the motor standard-sized sheet and the motor part rotating speed when separating adjusts the time of motor standard-sized sheet and the time that motor part is separated, thereby the adjustment mean speed is stabilized in rotating speed of target;
Whether the time of e) detecting high speed dewatering has passed through setting-up time T1, if the time of high speed dewatering is not passed through setting-up time T1, then returns d) step, if the effluxion of high speed dewatering setting-up time T1, then dehydration finishes.
2. the dehydrating speed control method of automatic washing machine as claimed in claim 1, it is characterized in that: said d) the high speed dewatering steps in sequence comprises step by step following:
D1) after high speed dewatering begins, carry out timing T;
D2) the actual speed usRPM_fix according to bucket sets motor wide-open time onst;
D3) set motor part and divide ETAD expected time of arrival and departure offst;
D4) whether timing T has passed through time T 2, if passed through time T 2, then gets into d5) step, if there is not elapsed time T2, then get into d6) step;
D5) be 1 to reading the sign assignment;
D6) motor carries out standard-sized sheet work in the motor wide-open time onst that sets;
D7) judge that whether motor is that standard-sized sheet or the value that reads sign are 1 for the first time; If motor is that for the first time standard-sized sheet or the value that reads sign are 1; Then get into d8) step, if motor is not that for the first time standard-sized sheet and the value that reads sign are not 1, then get into d9) step;
D8) read the rotating speed peak of peak;
D9) motor carries out the part work that goes into operation in part ETAD expected time of arrival and departure offst;
D10) judge motor whether be the first time portion separately, if motor be first time portion separately, then get into d11) step, portion separates if motor is not the first time, then gets into d14) step;
D11) read the rotating speed valley of minimum point;
Whether the difference of rotating speed valley of rotating speed peak and minimum point of d12) judging peak is more than or equal to setting deviate HENSA; If the difference of peak and valley is more than or equal to setting deviate HENSA; Then get into d13) step; If the difference of peak and valley then turns back to d4 less than setting deviate HENSA) step;
D13) reset part ETAD expected time of arrival and departure offst, return d4 then) step;
D14) interpretation reads whether the value of sign is 1, is 1 if read the value of sign, then gets into d15) step, be not 1 if read the value of sign, then return d4) step;
D15) read the tachometer value valley of minimum point;
D16) reading the sign assignment is zero;
D17) reset motor wide-open time onst according to (peak+valley)/2; Judge again at last whether timing T has reached e) setting-up time T1 in the step, if do not reach, then turn back to d4) step, if reached, then finish high speed dewatering.
3. the dehydrating speed control method of automatic washing machine as claimed in claim 2, it is characterized in that: said d4) value of the time T 2 in the step is: 15s≤T2≤60s.
4. the dehydrating speed control method of automatic washing machine as claimed in claim 3, it is characterized in that: said d4) value of the time T 2 in the step changes according to the value of timing T, and when T≤2 minute, the value of T2 is 15s～20s; When T＞2 minute, the value of T2 is 30s～60s.
5. the dehydrating speed control method of automatic washing machine as claimed in claim 2, it is characterized in that: the part ETAD expected time of arrival and departure offst that said d13) resets in the step is less than d3) the part ETAD expected time of arrival and departure offst that sets in the step.
6. the dehydrating speed control method of automatic washing machine as claimed in claim 5; It is characterized in that: the part ETAD expected time of arrival and departure offst value of said d3) setting in the step is 2.5s under the 50Hz power supply; Under the 60Hz power supply 4s; D13) the part ETAD expected time of arrival and departure offst value that resets in the step is 1.2s under the 50Hz power supply, be 3s under the 60Hz power supply.
7. the dehydrating speed control method of automatic washing machine as claimed in claim 2 is characterized in that: said d2) the actual speed usRPM fix of bucket is high more in the step, and the motor wide-open time onst that then sets is more little.
8. the dehydrating speed control method of automatic washing machine as claimed in claim 7; It is characterized in that: when said d2) the actual speed usRPM fix of bucket is 760 rev/mins in the step; The motor wide-open time onst value of setting is 2.7s under the 50Hz power supply, is 0.9s under the 60Hz power supply; When the actual speed usRPM_fix of bucket was 780 rev/mins, the motor wide-open time onst value of setting was 2.6s under the 50Hz power supply, is 0.8s under the 60Hz power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210121827.9A CN102619056B (en) | 2012-04-24 | 2012-04-24 | Dehydrating rotation speed control method of full-automatic washing machine |
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| CN201210121827.9A CN102619056B (en) | 2012-04-24 | 2012-04-24 | Dehydrating rotation speed control method of full-automatic washing machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60132598A (en) * | 1983-12-22 | 1985-07-15 | 松下電器産業株式会社 | Dehydration unbalance detection apparatus |
| CN1106481A (en) * | 1993-08-26 | 1995-08-09 | 株式会社东芝 | Washing machine |
| CN1184867A (en) * | 1996-12-10 | 1998-06-17 | 株式会社日立制作所 | Operation control device for washing machine |
| KR20070048519A (en) * | 2005-11-04 | 2007-05-09 | 삼성전자주식회사 | Washing machine and method for controlling unbalance the same |
| CN101139794A (en) * | 2006-09-08 | 2008-03-12 | 日立空调·家用电器株式会社 | Roller type washing machine and roller washing drying machine |
-
2012
- 2012-04-24 CN CN201210121827.9A patent/CN102619056B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60132598A (en) * | 1983-12-22 | 1985-07-15 | 松下電器産業株式会社 | Dehydration unbalance detection apparatus |
| CN1106481A (en) * | 1993-08-26 | 1995-08-09 | 株式会社东芝 | Washing machine |
| CN1184867A (en) * | 1996-12-10 | 1998-06-17 | 株式会社日立制作所 | Operation control device for washing machine |
| KR20070048519A (en) * | 2005-11-04 | 2007-05-09 | 삼성전자주식회사 | Washing machine and method for controlling unbalance the same |
| CN101139794A (en) * | 2006-09-08 | 2008-03-12 | 日立空调·家用电器株式会社 | Roller type washing machine and roller washing drying machine |
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