CN202898806U - Dewatering imbalance detecting device of roller washing machine - Google Patents
Dewatering imbalance detecting device of roller washing machine Download PDFInfo
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- CN202898806U CN202898806U CN 201220479653 CN201220479653U CN202898806U CN 202898806 U CN202898806 U CN 202898806U CN 201220479653 CN201220479653 CN 201220479653 CN 201220479653 U CN201220479653 U CN 201220479653U CN 202898806 U CN202898806 U CN 202898806U
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Abstract
The utility model provides a dewatering imbalance detecting device of a roller washing machine. The dewatering imbalance detecting device of the roller washing machine solves the problems that according to existing detecting technology, a speed difference method is adopted to calculate the amount of eccentricity, and errors of the amount of eccentricity are large and accuracy is poor due to indirect detection. The dewatering imbalance detecting device of the roller washing machine comprises a motor and a microcomputer controller, wherein the motor is used for driving rollers to rotate, and the microcomputer controller is connected with the motor. A speed measuring sensor is installed on the motor and connected on the microcomputer controller in a feedback mode. A control unit capable of receiving a feedback signal of the speed measuring sensor is arranged in the microcomputer controller. The control unit sends a control signal through a communication circuit. The control signal is used for keeping the motor in a running state according to a set value. The control unit is further connected with a filtering unit through a circuit. The filtering unit is capable of collecting the control signal. The filtering unit extracts an obtained reshaping signal and sends the reshaping signal to a computing unit through the communication circuit. According to the dewatering imbalance detecting device of the roller washing machine, the actual and real amount of eccentricity is extracted through direct monitoring of the control signal, and directness and accuracy of measuring and calculating of the amount of the eccentricity are remarkably improved.
Description
Technical field
The utility model belongs to the washing machine technical field, relates to a kind of roller washing machine, particularly the uneven checkout gear of a kind of barrel washing machine dehydration.
Background technology
Along with the development of white domestic appliances product, roller washing machine is had an optimistic view of by many manufacturers as a kind of novel washing machine form, and clean advantage than high, water saving, economize on electricity that it has is also by more consumers' approval with like.
The uneven detectability of barrel washing machine dehydration is to determine the very important technical performance of washing machine, and it is an important indicator weighing each roller washing machine manufacturer product quality.
Existing dehydration unbalance detection generally adopts the method for speed difference to calculate the inner tank of washing machine eccentricity judgment and detect uneven, the method is not to cause the eccentric direct parameter that affects by detection, but this indirect parameter that changes by detection speed, because washing machine adopts PID control technology control inner core rotating speed to guarantee the constant of rotating speed, therefore partial offset the impact of offset on speed parameter, the accuracy rate of this detection method is reduced.This uneven detection technique adopts, maximum speed when when low speed, determining dehydration according to the size that detects offset, can't be implemented in the high speed dewatering process and to prepare to detect offset, therefore can not be according to the minimizing of the water yield in the clothing, and then rotating speed is adjusted in the variation of offset.
Another kind of uneven detection technique is to increase a balance detection sensor, and the method can increase the cost of washing machine and the complexity of control system.
The utility model content
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind ofly directly to judge offset by taking control signal, thereby has realized the accurate and effective uneven checkout gear of barrel washing machine dehydration that obtains offset numerical value.
The purpose of this utility model can realize by following technical proposal: the uneven checkout gear of a kind of barrel washing machine dehydration, comprise motor and the microcomputerized controller that is connected motor for the head roll rotation, one tachogenerator is installed on the described motor, and described tachogenerator feedback link is in above-mentioned microcomputerized controller, it is characterized in that, be provided with the control module of the feedback signal that can receive above-mentioned tachogenerator in the described microcomputerized controller, described control module is used for keeping said motor according to the control signal of setting value running via connection circuit output, described control module also is passed to connected filter unit with above-mentioned control signal, and the reshaping signal that described filter unit will extract gained exports the computing unit of its connection to.
This cylinder that installs in the applied washing machine can uprightly arrange or be obliquely installed, microcomputerized controller, motor connect cylinder and all are arranged in the washing machine shell, have integrated electroplax in the microcomputerized controller, control module, filter unit and computing unit all by the chip carrier concentrated setting on integrated electroplax.Tachogenerator can detect the instantaneous velocity of motor transmission shaft, and with this instantaneous velocity with the form feedback transmission of the signal of telecommunication to the integrated electroplax of microcomputerized controller.The control module internal memory is provided with the predetermined standard value of stages dehydrating speed, is setting value.Microcomputerized controller built-in system program is by directly taking control signal, the operating procedure of carrying out the methods such as filtering, value, calculating draws actual eccentricity, and actual eccentricity and setting value (predetermined offset) are carried out the big or small conditional request that whether satisfies the water smoking of living in that relatively draws.
The control module storage PID control system program that is provided with in the microcomputerized controller in the utility model, filter unit storage median smoothing filtering system program, the value program is calculated in the computing unit storage.It utilizes offset can affect the principle of rotating speed generation little deviation, and the value of this little deviation is determined by the composition parameter of offset, the value of acquisition speed deviation just can detect instantaneous offset thus, and the rotating speed deviation is eliminated in the effect of PID control system, so can't obtain by the direct-detection rotation speed change data message of accurately generation that offset affects.Processing control signals detects the after-applied control signal of rotating speed deviation by PID control system program and comprises the data message that can reflect rotating speed deviation value, so can draw actual instantaneous offset by obtaining also.Again the comparative result by actual eccentricity and setting value (predetermined standard offset) carry out in the setting program by level dehydration, thereby be implemented in the situation that does not produce displacement, vibrate less and improve to greatest extent dehydrating speed, further optimize the dehydration quality of clothing.
In the uneven checkout gear of above-mentioned barrel washing machine dehydration, described microcomputerized controller has output shaft end, and described motor has input shaft end, and above-mentioned output shaft end and input shaft end are connected.Control module in the integrated electroplax sends control signal and controls the output shaft end action of microcomputerized controller via connection circuit, and the motor input shaft end action that is connected with the output shaft end one of driven in synchronism, and the effect of motor speed is regulated and control in realization thus.
In the uneven checkout gear of above-mentioned barrel washing machine dehydration, described motor has power transmission shaft, and is connected by transmission device between described power transmission shaft and the above-mentioned cylinder.The input shaft end of motor and power transmission shaft one are connected, so both form the continuous axis body of same axis.Tachogenerator is installed on the power transmission shaft.Transmission device can be the driving belt assembly of belt pulley and belt composition, the driving-chain assembly that is perhaps formed by gear, chain, and this transmission device is prior art, so be not described in detail in this patent.
In the uneven checkout gear of above-mentioned barrel washing machine dehydration, described motor is series excited machine.When using series excited machine, the control signal that the control module of microcomputerized controller sends is voltage signal.
In the uneven checkout gear of above-mentioned barrel washing machine dehydration, described motor is three-phase variable frequency motor.When using three-phase variable frequency motor, the control signal that the control module of microcomputerized controller sends is frequency signal.
Compared with prior art, this barrel washing machine dehydration uneven checkout gear conventional art of having forgone produces the drawback of deviation because extracting revised rotating speed.Ward off in addition again thinking, because off-centre causes speed change, and the residual quantity of this reason speed change is directly eliminated and revised to the PID control technology, utilize thus the control signal of PID control technology output to the high sensitive characteristic of speed and torque, be actual actual value by directly control signal being extracted the offset that obtains out, thereby significantly improved substantivity and the accuracy of offset measuring and calculating; Simultaneously this device is for setting up the treatment system such as filtering in existing structure and technology, and embodiment is simple and easy thus, is convenient to popularization, the market competitiveness of the whole washing machine of favourable raising.
Description of drawings
Fig. 1 is the structural representation of the uneven checkout gear of this barrel washing machine dehydration.
Fig. 2 is the schematic flow sheet of dehydration in the uneven checkout gear of this barrel washing machine dehydration.
Fig. 3 is the schematic flow sheet that offset is measured in the uneven checkout gear of this barrel washing machine dehydration.
Among the figure, 1, cylinder; 2, transmission device; 3, motor; 4, tachogenerator; 5, microcomputerized controller.
The specific embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
Such as Fig. 1, Fig. 2 and Fig. 3, roller washing machine comprises the cylinder 1 for washing or dehydration clothing, the uneven checkout gear of this barrel washing machine dehydration comprises the motor 3 of connection and head roll 1, motor 3 is connected with microcomputerized controller 5, tachogenerator 4 is installed on the motor 3, and tachogenerator 4 feedback link microcomputerized controllers 5.
Be provided with integrated electroplax in the microcomputerized controller 5, be distributed with the chip of control module on the integrated electroplax.Tachogenerator 4 is by the feedback circuit connection control unit, and control module connects filter unit and computing unit successively.Storage PID control system program in the control module, and it also deposits the predetermined standard value that is provided with the stages dehydrating speed, is setting value; Storage median smoothing filtering system program in the filter unit; The value program is calculated in storage in the computing unit.
Roller washing machine is washing clothing etc. or during dehydration, there is offset by the position of clothing in the cylinder 1 of rotation, this offset causes the rotating speed generation little deviation of cylinder 1, and it is related to have the reply of specific rule between the composition parameter of this kind speed change and offset.Cylinder 1 speed change that is caused by offset is passed to the power transmission shaft of motor 3, the tachogenerator 4 of installing on the power transmission shaft detects the transient speed of power transmission shaft, and with this instantaneous velocity with in the form feedback transmission of the signal of telecommunication control module to the integrated electroplax of microcomputerized controller 5.PID control system process analysis in the control module goes out the residual quantity that has between the setting value (standard value that should make in advance the operational phase of living in) that actual speed and its internal memory establish, continue after PID control system program rapidly output be used for remedying the control signal of residual quantity, this control signal is controlled the output shaft end action of microcomputerized controller 5 via connection circuit, and motor 3 input shaft ends that driven in synchronism is connected with the output shaft end one move, eliminate thus the reality that causes because of offset and the difference of subscribing rotating speed, cylinder 1 can be rotated in strict accordance with the speed of microcomputerized controller 5 interior predetermined standard value in running.When using series excited machine 3, the control signal that the control module of microcomputerized controller 5 sends is voltage signal; When using three-phase variable frequency motor 3, what the control module of microcomputerized controller 5 sent is frequency control signal.
Because PID control system program is followed the tracks of the working speed of regulation and control cylinder 1, i.e. its rotating speed residual quantity that departs from setting value that can instant, potent elimination cylinder 1 causes because of factors such as offsets at any time.The working speed gained of direct-detection cylinder 1 is through the tachometer value behind the PID control system correction program thus, so can't obtain accurately offset by this value judgement.
This barrel washing machine dehydration unbalance detection, the method comprise the step of following order:
(1) when cylinder 1 rotating speed of washing machine reaches low-speed detection speed, cause motor 3 rotating speeds to produce little deviation by offset, the corresponding output of PID control system is used for eliminating the control signal of rotating speed deviation, the median smoothing filtering system extracts rear formation reshaping signal to this control signal, then calculate the maximum deviation range value according to the maximum in the above-mentioned reshaping signal and minimum of a value, utilize the maximum deviation range value relatively to draw offset with setting value and whether meet the requirements;
(2) if detecting offset meets the requirements, then enter low speed dehydration, do not meet and then carry out run-out modification, enter next time eccentricity detecting;
(3) after entering low speed dehydration, repeat simultaneously said method and carry out the offset detection, and judge that whether offset meets the predetermined setting value that improves dehydrating speed, then enters the high speed dewatering step if meet; Then do not keep current low speed dehydration if meet, proceed offset and detect;
(4) if offset meets the requirements in the high speed dewatering step, then by waiting utmost point progressively to improve dehydrating speed until reach predetermined maximum speed; If offset is undesirable, then keep current rank dehydrating speed, perhaps be reduced to the appropriate level dehydrating speed.
The low-speed detection speed that roller washing machine enters dehydration is 50～90rpm.Eccentricity judgment in this unbalance detection is realized by filter shape, calculating value two steps successively, before entering every grade dehydration, choosing maximum wherein compares as the determined value of offset, for obtaining an offset numerical value comparatively accurately, should in prescribed limit, repeatedly judge.And judge that number of times and dehydrating speed are proportional, namely rotating speed is low judges that number of times is few, and revolution is high to be judged often, and this judgement number of times is 5～80 times.
Repeatedly judge conclusion: if offset meets the requirements, then enter the step of higher one-level dehydration, and improve dehydrating speed and carry out simultaneously the next stage eccentricity detecting, reach successively thus the highest dehydrating speed; When if offset does not meet the setting value of predetermined raising dehydrating speed, keep existing dehydrating speed to continue dehydration; When if offset does not meet the setting value of current predetermined dehydrating speed, reduce dehydrating speed and enter the dewatering state of lower one-level, and continue to detect offset, until be reduced to the low-speed detection speed state.
The judgement principle of the method is: the offset of real-world operation causes producing the appearance of rotating speed deviation value, and PID control system program detects and to comprise the data message that can reflect rotating speed deviation value in the after-applied control signal of rotating speed deviation, so by obtaining and processing control signals can draw actual instantaneous offset.
In time grasp accurately the moment offset, again by its comparative result with setting value (predetermined standard offset) carry out in the setting program by level dehydration, thereby be implemented in the situation that does not produce displacement, vibrate less and improve to greatest extent dehydrating speed, further optimize the dehydration quality of clothing.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used cylinder 1; Transmission device 2; Motor 3; Tachogenerator 4; Microcomputerized controller 5 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (5)
1. the uneven checkout gear of a barrel washing machine dehydration, comprise motor and the microcomputerized controller that is connected motor for the head roll rotation, one tachogenerator is installed on the described motor, and described tachogenerator feedback link is in above-mentioned microcomputerized controller, it is characterized in that, be provided with the control module of the feedback signal that can receive above-mentioned tachogenerator in the described microcomputerized controller, described control module is used for keeping said motor according to the control signal of setting value running via connection circuit output, described control module also is passed to connected filter unit with above-mentioned control signal, and the reshaping signal that described filter unit will extract gained exports the computing unit of its connection to.
2. the uneven checkout gear of barrel washing machine dehydration according to claim 1 is characterized in that described microcomputerized controller has output shaft end, and described motor has input shaft end, and above-mentioned output shaft end and input shaft end are connected.
3. the uneven checkout gear of barrel washing machine dehydration according to claim 1 is characterized in that described motor has power transmission shaft, and is connected by transmission device between described power transmission shaft and the above-mentioned cylinder.
4. according to claim 1 and 2 or the uneven checkout gears of 3 described barrel washing machine dehydrations, it is characterized in that described motor is series excited machine.
5. according to claim 1 and 2 or the uneven checkout gears of 3 described barrel washing machine dehydrations, it is characterized in that described motor is three-phase variable frequency motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220479653 CN202898806U (en) | 2012-05-31 | 2012-09-19 | Dewatering imbalance detecting device of roller washing machine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220251098 | 2012-05-31 | ||
| CN201220251098.4 | 2012-05-31 | ||
| CN 201220479653 CN202898806U (en) | 2012-05-31 | 2012-09-19 | Dewatering imbalance detecting device of roller washing machine |
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| CN202898806U true CN202898806U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220479653 Withdrawn - After Issue CN202898806U (en) | 2012-05-31 | 2012-09-19 | Dewatering imbalance detecting device of roller washing machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888736A (en) * | 2012-05-31 | 2013-01-23 | 青岛澳柯玛洗衣机有限公司 | Device and method for detecting dehydration imbalance of drum washing machine |
| CN110409122A (en) * | 2018-04-30 | 2019-11-05 | 大宇电子株式会社 | Washing machine and its unbalance detection |
| CN111441151A (en) * | 2018-12-29 | 2020-07-24 | 青岛海尔洗衣机有限公司 | Control method for washing equipment and washing equipment |
-
2012
- 2012-09-19 CN CN 201220479653 patent/CN202898806U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888736A (en) * | 2012-05-31 | 2013-01-23 | 青岛澳柯玛洗衣机有限公司 | Device and method for detecting dehydration imbalance of drum washing machine |
| CN102888736B (en) * | 2012-05-31 | 2014-12-03 | 青岛澳柯玛洗衣机有限公司 | Device and method for detecting dehydration imbalance of drum washing machine |
| CN110409122A (en) * | 2018-04-30 | 2019-11-05 | 大宇电子株式会社 | Washing machine and its unbalance detection |
| CN111441151A (en) * | 2018-12-29 | 2020-07-24 | 青岛海尔洗衣机有限公司 | Control method for washing equipment and washing equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20141203 |
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| RGAV | Abandon patent right to avoid regrant |