EP1760182A2 - Verfahren zur Erkennung einer Unwucht und dieses verwendende Waschmaschine - Google Patents

Verfahren zur Erkennung einer Unwucht und dieses verwendende Waschmaschine Download PDF

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Publication number
EP1760182A2
EP1760182A2 EP06004501A EP06004501A EP1760182A2 EP 1760182 A2 EP1760182 A2 EP 1760182A2 EP 06004501 A EP06004501 A EP 06004501A EP 06004501 A EP06004501 A EP 06004501A EP 1760182 A2 EP1760182 A2 EP 1760182A2
Authority
EP
European Patent Office
Prior art keywords
unbalance
velocity
motor
tub
washing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06004501A
Other languages
English (en)
French (fr)
Other versions
EP1760182A3 (de
Inventor
Chang Joo No. 701-713 Wooseong 7th APT. Park
Chang-Hyun No. 816-1702 Kim
Myung Chul No. 507-903 Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1760182A2 publication Critical patent/EP1760182A2/de
Publication of EP1760182A3 publication Critical patent/EP1760182A3/de
Withdrawn legal-status Critical Current

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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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/24—Spin speed; Drum movements
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting

Definitions

  • the present invention relates to a an unbalance detection method and a washing machine using the same which is capable of efficiently detecting unbalance of a rotation tub.
  • a washing machine includes a washing motor for rotating a rotation tub which accommodates laundry.
  • the washing machine includes a controller for controlling the number of rotating of the washing motor, wherein the controller controls a series of washing operations such as cleaning, rinsing and spin-drying.
  • FIG. 1a is a view showing an unbalance state wherein the laundry in a rotation tub has accumulated at one side
  • FIG. 1b is a view showing a balance state wherein the laundry in the rotation tub is evenly arranged.
  • the rotation tub When spin-drying laundry using centrifugal force generated by rapid rotation of the rotation tub, in the unbalance state where the laundry has accumulated at one side as shown in FIG. 1a, the rotation tub is excessively shaken so that noise occurs. In order to suppress the occurrence of noise, it is preferred that the spin-dry operation be performed in a balance state wherein the laundry in the rotation tub is evenly arranged as shown in FIG. 1 b.
  • the conventional unbalance detection method detects the unbalance based on velocity variation of the motor.
  • the conventional unbalance detection method detects the degree of velocity variation of the motor to detect the unbalance in the state where the velocity of the motor kept at a predetermined period of time.
  • FIG. 2 is a velocity graph of a motor for describing a conventional unbalance detection method.
  • the conventional unbalance detection method increases the angular speed, and performs a clinging operation for causing the laundry to cling to the inside of the rotation tub.
  • the conventional unbalance detection method keeps the angular speed constant during an unbalance detection period of time, detects the amount of velocity variation of the motor, and determines whether the unbalance occurs according to the amount of the unbalance operated on the basis of the detected velocity variation of the motor.
  • FIG. 3 is a view showing actual velocity of a motor, calculated average velocity and actual average velocity in an unbalance detection period.
  • a washing machine comprising: a washing motor rotating a rotation tub accommodating laundry; a motor velocity detection unit detecting velocity of the washing motor and outputting a motor velocity signal; and a controller determining whether unbalance of the rotation tub occurs according to an unbalance level determined on the basis of a velocity ripple of the motor velocity signal, and controlling the washing motor according to the determination result.
  • the controller may determine whether the unbalance of the rotation tub occurs in real time while driving the washing motor.
  • the controller may determine whether the unbalance of the rotation tub occurs under condition that the velocity of the washing motor varies.
  • the controller may determine whether the unbalance of the rotation tub occurs under condition that the velocity of the washing motor remains constant.
  • the controller may further include a high pass filter for detecting the velocity ripple.
  • the high pass filter may have a cutoff frequency which does not exceed 1/4 of an angular speed of the rotation tub.
  • the controller may include a low pass filter for filtering other components generated according to mechanical characteristics other than an unbalance component, and an absolute value operation unit for detecting an unbalance level according to the unbalance component.
  • the controller may further include an unbalance determination unit for comparing the unbalance level filtered through the low pass filter with a reference level, and for determining whether the unbalance occurs.
  • a method of detecting unbalance of a rotation tub accommodating the laundry in a washing machine comprising: driving a washing motor in order to rotate the rotation tub; detecting avelocity of the washing motor, and outputting a motor velocity signal; extracting avelocity ripple of the motor velocity signal, the velocity ripple being generated during detection of the velocity of the washing motor; detecting an unbalance level based of the extracted velocity ripple; and comparing the detected unbalance level with a reference value and determining whether the unbalance of the rotation tub occurs.
  • the extracting velocity ripple may be performed using a high pass filter with a preset cutoff frequency.
  • the detecting an unbalance level may include performing operations on an absolute value of the velocity ripple, and filtering other components aside from an unbalance component of the absolute value operated signal using a low pass filter, and wherein other components are generated by mechanical characteristics.
  • the rotation tub may be rapidly rotated if the resulting determination state indicates a balance state, and an actual spin-dry operation is performed.
  • Thedetecting an unbalance level may be simultaneously performed with a clinging operation for causing the laundry to cling to the inside of the rotation tub.
  • FIG. 4 is a schematic block diagram showing the configuration of a washing machine according to an embodiment of the present invention. More particularly, FIG. 4 shows the configuration of a washing machine for driving a washing motor so as to perform a spin-dry operation. However, other known components not shown in FIG. 4 may be employed in order to perform cleaning and rising operations as well as the spin-dry operation.
  • the washing machine includes: an input unit 10 allowing a user to input operation commands which contain a command for setting a spin-dry operation; a controller 20 for controlling overall operations of the washing machine; a motor driver 30 for driving a washing motor 40 under control of the controller 20; and a motor velocity detection unit 50 for providing a motor velocity signal to the controller 20, wherein the motor velocity signal corresponds to an angular speed of the washing motor 40.
  • the motor velocity detection unit 50 can be embodied using a hall sensor or an encoder.
  • FIG. 5 is a detailed block diagram showing the configuration of a controller in FIG. 4.
  • the controller 20 controls a velocity ripple extraction unit 21, an absolute value operation unit 22, an unbalance level detection unit 23, an unbalance determination unit 24 and a motor control unit 25.
  • the washing motor 40 of FIG. 4 When performing a spin-dry operation after cleaning and rinsing the laundry, the washing motor 40 of FIG. 4 is firstly driven so as to perform a clinging operation for causing the laundry to cling to the inside of the rotation tub.
  • the laundry in the rotation tub is generally arranged to the unbalance state as shown in FIG. 1a. If rotation velocity of the washing motor 40 is low, the laundry may move in the rotation tub.
  • FIG. 6 is a view showing respective motor velocity signals through a motor velocity detection unit in an unbalance state and a balance state according to the present invention.
  • the velocity ripple extraction unit 21 extracts velocity ripple (Y2) from the motor velocity signal (Y1) which is provided through the motor velocity detection unit 50.
  • the velocity ripple extraction unit 21 may use a high pass filter (HPF) or a band pass filter (BPF).
  • HPF high pass filter
  • BPF band pass filter
  • the velocity ripple extraction unit 21 may use the high pass filter (HPF) with a predetermined cutoff frequency (Fcutoff-H), wherein the cutoff frequency (Fcutoff-H) is set to a value which does not exceed 1/4 of an angular speed (Ftub) of the rotation tub.
  • FIG. 7 is a view showing respective velocity ripples detected through a velocity ripple detection unit in an unbalance state and a balance state according to the present embodiment of the present invention.
  • the velocity ripple (Y2) provided to the absolute value operation unit 22 through the velocity ripple extraction unit 21 is a waveform signal in which a direct current (DC) component is removed.
  • FIG. 8 is a view showing respective signals operated through an absolute value operation unit in an unbalance state and a balance state according to the present embodiment of the present invention
  • the absolute value operation unit 22 squares the extracted velocity ripple (Y2), Y2*Y2, and provides a waveform signal above 0 (Y3) to the unbalance level detection unit 23.
  • FIG. 9 is a view showing respective unbalance levels detected through an unbalance level detection unit in an unbalance state and a balance state according to the present embodiment of the present invention.
  • the unbalance level detection unit 23 removes other components aside from signal components generated by the unbalance, and outputs an unbalance level (Y4) to the unbalance determination unit 24.
  • other components represent components generated by mechanical characteristics such as a belt and pulley for transmitting power of the motor to the rotation tub.
  • the unbalance level detection unit 23 may use a low pass filter (LPF) with a predetermined frequency (Fcutoff-L).
  • LPF low pass filter
  • Fcutoff-L predetermined frequency
  • the unbalance level (Y4) provided through the unbalance level detection unit 23 is provided in consideration of an influence of velocity variation of the washing motor in real time.
  • the unbalance level detection unit 23 compares the provided unbalance level (Y4) with a predetermined reference value, and determines whether the unbalance occurs. For example, when the unbalance level (Y4) is 0, the unbalance level detection unit 23 recognizes that the resulting determination state is a balance state wherein the laundry in the rotation tub is evenly arranged, and outputs the corresponding unbalance determination signal to the motor control unit 25. Thus, the motor control unit 25 outputs a motor driving signal to a motor driver 30, and rapidly rotates the rotation tub so as to substantially perform the spin-dry operation.
  • the unbalance level is detected from the motor velocity signal while driving the washing motor, the unbalance can be determined in real time.
  • the velocity ripple from the motor velocity signal and determining whether the unbalance occurs on the basis of the extracted velocity ripple, it is possible to accurately determine whether the unbalance occurs.
  • the motor control unit by performing the clinging operation while varying the velocity of the motor, and by simultaneously determining whether the unbalance occurs, if it is determined that the resulting determination state is a balance state, the motor control unit rapidly rotates the rotation tub to substantially perform the spin-drying operation, and thereby it is possible to decrease overall spin-drying time.
  • FIG. 10 is a flowchart illustrating an unbalance detection method according to an embodiment of the present invention.
  • the controller 20 sets a spin-dry operation mode after cleaning and rinsing (101).
  • the motor control unit 25 controls the motor driver 30, and drives a drive of the washing motor 40 which is stopped (103).
  • the motor velocity detection unit 50 While driving the washing motor 40, the motor velocity detection unit 50 detects the velocity of the motor, and outputs the corresponding motor velocity signal (Y1) to the controller 20 (105).
  • the velocity ripple extraction unit 21 of the controller 20 extracts velocity ripple (Y2) with a high frequency from the motor velocity signal (Y1) (107). That is, in order to extract the velocity ripple (Y2), the velocity ripple extraction unit 21 passes the motor velocity signal (Y1) through a high pass filter with a predetermined cutoff frequency (Fcutoff-H) which is set to a value which does not exceed 1/4 of the angular speed (Ftub) of the rotation tub, and provides the velocity ripple (Y2) to the absolute value operation unit 22, wherein a DC component of the velocity ripple (Y2) is removed while passing through the high pass filter.
  • Fcutoff-H cutoff frequency
  • the absolute value operation unit 22 squares the extracted velocity ripple (Y2), Y2*Y2 so that overall signals have values above 0, and provides an absolute value operated signal (Y3) to the unbalance level detection unit 23 (109).
  • the signal (Y3) provided from the unbalance level detection unit 23 passes through the low pass filter (LPF) with a predetermined cutoff frequency (Fcutoff-L), and is delivered to the unbalance determination unit 24, wherein the unbalance level is filtered while passing through the low pass filter (LPF) (111).
  • LPF low pass filter
  • Fcutoff-L cutoff frequency
  • the unbalance determination unit 24 compares the provided unbalance level with a predetermined reference value, determines whether the unbalance exists, and provides an unbalance determination signal to the motor control unit 25, wherein the unbalance determination signal is a signal for control the washing motor according to the unbalance determination (113).
  • the motor control unit 25 When the motor control unit 25 receives the unbalance determination signal indicating a balance state, the motor control unit 25 rapidly rotates the rotation tub to substantially perform the spin-drying operation (115).
  • the above unbalance detection method according to the present embodiment of the present invention can be applied to the state where the velocity of the motor is varied, wherein the method extracts the velocity ripple from the motor velocity signal and determines whether the unbalance occurs on the basis of the extracted velocity ripple.
  • the above unbalance detection method can be equally applied to the state where the velocity of the motor is maintained constant so as to determine whether the unbalance occurs.
  • the present embodiment of the present invention can determine whether the unbalance occurs by performing the clinging operation while varying the velocity of the motor. In addition, when the clinging operation is finished, the present invention can determine whether the unbalance occurs by operating the velocity ripple in the state where the velocity of the motor is constantly remained.
  • the above-described embodiments of the present invention provide a washing machine and an unbalance detection method using the same, wherein, since the unbalance level is detected from the motor velocity signal while driving the washing motor, the unbalance can be determined in real time.
  • the unbalance can be determined in real time.
  • the motor control unit by performing the clinging operation while varying the velocity of the motor, and by simultaneously determining whether the unbalance occurs, if it is determined that the resulting determination state is a balance state, the motor control unit rapidly rotates the rotation tub to substantially perform the spin-drying operation, and thereby it is possible to decrease overall spin-drying time.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP06004501A 2005-08-31 2006-03-06 Verfahren zur Erkennung einer Unwucht und dieses verwendende Waschmaschine Withdrawn EP1760182A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050080800A KR20070025056A (ko) 2005-08-31 2005-08-31 세탁기 및 그 언밸런스 검출방법

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EP1760182A2 true EP1760182A2 (de) 2007-03-07
EP1760182A3 EP1760182A3 (de) 2009-05-13

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EP06004501A Withdrawn EP1760182A3 (de) 2005-08-31 2006-03-06 Verfahren zur Erkennung einer Unwucht und dieses verwendende Waschmaschine

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US (1) US20070044247A1 (de)
EP (1) EP1760182A3 (de)
KR (1) KR20070025056A (de)
CN (1) CN1924154A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3660197A1 (de) * 2018-11-30 2020-06-03 Samsung Electronics Co., Ltd. Waschmaschine und verfahren zur steuerung davon

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8695381B2 (en) * 2008-03-28 2014-04-15 Electrolux Home Products, Inc. Laundering device vibration control
US8499392B2 (en) * 2010-01-29 2013-08-06 General Electric Company Apparatus and method for detecting unbalanced loads in a washing machine
US8932369B2 (en) 2010-04-13 2015-01-13 Whirlpool Corporation Method and apparatus for determining an unbalance condition in a laundry treating appliance
CN102466538A (zh) * 2011-03-14 2012-05-23 无锡艾柯威科技有限公司 一种变频电机负载的不平衡检测方法
US8689641B2 (en) 2012-07-17 2014-04-08 Whirlpool Corporation Detecting satellization of a laundry load
CN105063955B (zh) * 2015-08-05 2018-01-16 无锡小天鹅股份有限公司 洗衣机的控制方法和装置
KR102527576B1 (ko) * 2016-10-07 2023-04-28 엘지전자 주식회사 세탁기 및 그 제어방법
CN107130393A (zh) * 2017-05-31 2017-09-05 广东威灵电机制造有限公司 滚筒洗衣机及其控制方法、装置以及机器可读存储介质
CN107099973B (zh) * 2017-05-31 2020-04-21 广东威灵电机制造有限公司 洗衣机桶体的不平衡检测方法、洗衣机及存储介质
KR20190125658A (ko) * 2018-04-30 2019-11-07 주식회사 위니아대우 세탁기 및 언밸런스 제어방법
CN113389011A (zh) * 2020-03-12 2021-09-14 青岛海尔洗衣机有限公司 洗衣机撞桶检测方法、装置、系统及洗衣机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732436A1 (de) * 1995-03-11 1996-09-18 Whirlpool Europe B.V. Verfahren und Vorrichtung zum Auswuchten in Waschmaschinen
US5970555A (en) * 1997-05-20 1999-10-26 Lg Electronics Inc. Method and control apparatus of detecting eccentricity in drum washing machine
EP1045062A2 (de) * 1999-03-26 2000-10-18 Samsung Electronics Co., Ltd. Waschmaschine
US20020120419A1 (en) * 2001-02-26 2002-08-29 Steffen Michael A. Method and apparatus for reducing microprocessor speed requirements in data acquisition applications
US20040211009A1 (en) * 2003-04-28 2004-10-28 Emerson Electric Co. Method and system for determinging a washing machine load unbalance
US20050028296A1 (en) * 2003-08-07 2005-02-10 Lg Electronics Inc. Spin-dry control method in washing machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6578225B2 (en) * 2000-05-25 2003-06-17 Skf Autobalance Systems Ab Low-speed prebalancing for washing machines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732436A1 (de) * 1995-03-11 1996-09-18 Whirlpool Europe B.V. Verfahren und Vorrichtung zum Auswuchten in Waschmaschinen
US5970555A (en) * 1997-05-20 1999-10-26 Lg Electronics Inc. Method and control apparatus of detecting eccentricity in drum washing machine
EP1045062A2 (de) * 1999-03-26 2000-10-18 Samsung Electronics Co., Ltd. Waschmaschine
US20020120419A1 (en) * 2001-02-26 2002-08-29 Steffen Michael A. Method and apparatus for reducing microprocessor speed requirements in data acquisition applications
US20040211009A1 (en) * 2003-04-28 2004-10-28 Emerson Electric Co. Method and system for determinging a washing machine load unbalance
US20050028296A1 (en) * 2003-08-07 2005-02-10 Lg Electronics Inc. Spin-dry control method in washing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3660197A1 (de) * 2018-11-30 2020-06-03 Samsung Electronics Co., Ltd. Waschmaschine und verfahren zur steuerung davon
US11993884B2 (en) 2018-11-30 2024-05-28 Samsung Electronics Co., Ltd. Washing machine and method of controlling the same

Also Published As

Publication number Publication date
CN1924154A (zh) 2007-03-07
EP1760182A3 (de) 2009-05-13
US20070044247A1 (en) 2007-03-01
KR20070025056A (ko) 2007-03-08

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