WO2017067716A1 - Procédé pour faire fonctionner un appareil ménager avec détection de la vibration d'un dispositif de palier et appareil ménager - Google Patents

Procédé pour faire fonctionner un appareil ménager avec détection de la vibration d'un dispositif de palier et appareil ménager Download PDF

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Publication number
WO2017067716A1
WO2017067716A1 PCT/EP2016/071587 EP2016071587W WO2017067716A1 WO 2017067716 A1 WO2017067716 A1 WO 2017067716A1 EP 2016071587 W EP2016071587 W EP 2016071587W WO 2017067716 A1 WO2017067716 A1 WO 2017067716A1
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WO
WIPO (PCT)
Prior art keywords
bearing device
sensor data
vibration
speed
sensor
Prior art date
Application number
PCT/EP2016/071587
Other languages
German (de)
English (en)
Inventor
Klaus Günzel
Wolfram SCHUBERT
Jörg SKRIPPEK
Sven Vogel
Original Assignee
BSH Hausgeräte GmbH
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 BSH Hausgeräte GmbH filed Critical BSH Hausgeräte GmbH
Publication of WO2017067716A1 publication Critical patent/WO2017067716A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • 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
    • D06F2105/48—Drum speed
    • 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

Definitions

  • the present invention relates to a method for operating a domestic appliance for the care of laundry items, in which a laundry drum for receiving items of laundry by means of a drive motor is rotated at a current speed, wherein the laundry drum is rotatably supported by a bearing means are provided by sensor means sensor data, which describe a vibration of at least one component of the household appliance, and by means of an evaluation device, the sensor data is received and the drive motor is controlled to change the current speed in dependence on the received sensor data.
  • the present invention relates to a household appliance for the care of laundry items.
  • the interest is directed here to household appliances for the care of laundry, especially washing machines.
  • During operation of the washing machine usually low amounts of noise are emitted from the washing machine under conventional conditions. This also applies to the case in which the washing machine is operated in the so-called spin cycle. In the operation of the washing machine nevertheless occur situations in which the emitted sound is much higher than in the conventional conditions. This may be due, for example, to the fact that the items of laundry within the washing drum have a random and irregular distribution and thus form imbalances which may, for example, lead to vibrations of the laundry drum. It is now desirable to control the operation of the washing machine so that the emitted sound is minimized.
  • corresponding sensor devices are used in order to detect vibrations of at least one component of the household appliance during operation.
  • DE 10 201 1 083 568 A1 describes a method for identifying a property of a periodically oscillating unit, in particular a drive motor a household washing machine.
  • the vibrations of windings of a drive motor are monitored by means of a corresponding structure-borne noise measuring device, for example an acceleration sensor.
  • a frequency spectrum of the sensor signals can be determined.
  • US 5 930 855 A describes a method for optimizing the rotational speed of a laundry drum of a washing machine.
  • an acceleration sensor is used to detect machine vibrations. Depending on the detected vibrations, the speed with which the laundry drum is rotated can then be adjusted.
  • DE 10 2006 014 530 A1 discloses a method for detecting unbalance parameters of a laundry drum rotatably mounted with a bearing device in a washing machine and a washing machine set up for carrying out the method.
  • the unbalance parameters are detected by a device which determines a dynamic bearing load, the dynamic bearing load being understood to mean the forces and / or moments acting on the bearing device, which act on the bearing device due to an imbalance formed in the laundry drum.
  • Such dynamic bearing loads are preferably caused by a tumble pitch movement of the drum caused by the imbalance.
  • the device for imbalance parameter detection can be, for example, a force sensor arranged on the bearing device.
  • the control and / or regulating parameters for operating the washing machine can be adjusted.
  • An inventive method is used to operate a household appliance for the care of laundry, in which a laundry drum for receiving laundry by means of a drive motor is rotated at a current speed, wherein the laundry drum is rotatably supported by a bearing means.
  • sensor data are provided which describe a vibration of at least one component of the household appliance.
  • the sensor data is received by means of an evaluation device and the drive motor is controlled to change the current rotational speed as a function of the received sensor data.
  • a vibration of the bearing device is detected and the drive motor is driven to change the current speed, if the vibration of the bearing device is detected.
  • a characteristic value, in particular an energy value or an amplitude, of the oscillation of the bearing device is determined.
  • the drive motor for changing the current speed depending on the determined characteristic value, in particular the energy value or the amplitude, driven, in particular, the change of the current speed occurs when exceeding a predetermined threshold, which by comparing the determined characteristic value with the Threshold can be determined.
  • An energy value of an oscillation is understood in particular to mean the energy content of a determined oscillation.
  • the method is intended to operate a domestic appliance for the care of items of laundry, in particular a washing machine.
  • a washing machine has the laundry drum, in which the laundry items can be arranged.
  • the laundry drum is rotated by means of the drive motor.
  • the laundry drum is rotatably supported by means of a bearing device.
  • a bearing device for example, a bearing with corresponding rolling elements, For example, a ball bearing, have.
  • a vibration of at least one component of the household appliance or the washing machine is detected by means of a sensor device.
  • the sensor device may be, for example, an acceleration sensor.
  • the sensor data are provided, which describe, for example, the vibration of the component of the household appliance. These sensor data are received by the evaluation device and evaluated accordingly. If it is detected by the evaluation device that a component of the washing machine oscillates, the drive motor can be controlled with the evaluation device, so that the rotational speed is changed. For this purpose, the evaluation device, for example, send a corresponding control signal to the drive motor or control electronics of the drive motor. According to the invention, it is now provided that an oscillation of the bearing device is detected by means of the evaluation device on the basis of the sensor data. It should therefore be checked whether the bearing device or a bearing of the bearing device is excited to mechanical vibrations during operation of the washing machine.
  • noises may emanate from the bearing device or a bearing of the bearing device. This applies in particular to the case when the bearing device is designed as a rolling bearing or comprises a roller bearing. Depending on the current rotational speed and / or the loading state, situations may arise in which the rolling elements lift off from the running surface for a predetermined period of time and subsequently strike the running surface again. By the movement of the rolling elements, the bearing or the bearing device is excited to mechanical vibrations. These are transmitted as structure-borne noise, for example via the tub and are then perceived as airborne sound again. These sound noises can be perceived as disturbing by a user of the washing machine.
  • these vibrations of the bearing device can be detected and the speed can be changed. By changing the speed can then be achieved that the bearing device is no longer excited to vibrate. Thus, the noise can be effectively reduced.
  • the sensor device comprises an acceleration sensor.
  • an acceleration sensor can be arranged, for example, in the region of the tub.
  • the acceleration sensor can be arranged such that the vibrations of the bearing device can be detected with it.
  • structure-borne noise is detected with the acceleration sensor, which forms as a result of the vibrations of the bearing device.
  • the acceleration sensor is designed to measure the acceleration in all three spatial directions.
  • the vibration of the bearing device can be reliably detected.
  • the sensor device has a displacement sensor.
  • the sensor device is designed in the manner of a vibrometer.
  • the sensor device comprises a microphone, by means of which the sound waves, which form as a result of the vibration of the bearing device, can be detected.
  • a number of revolutions of the laundry drum during rotation is determined and the sensor data is evaluated for a predetermined number of revolutions.
  • the number of full or full revolutions of the laundry drum is detected.
  • the number of revolutions of the laundry drum is determined, it can be checked whether a corresponding sensor signal or a rash in the sensor signal is detected periodically in successive revolutions. It is provided in particular that, for example, sensor data for 16 or 32 consecutive drum revolutions are evaluated. In particular, it is provided that for 2 P revolutions the sensor data are evaluated, P being a natural number greater than 0. If such a number of revolutions is evaluated, for example, a frequency analysis, in particular a Fourier transform can be performed in a simple manner.
  • an equal number of discrete measured values is determined for each of the revolutions.
  • the speed is increased, for example.
  • the sensor signal is sampled at a constant sampling rate, this results in a different number of samples depending on the number of revolutions per revolution.
  • This problem can be remedied, in particular, by scanning the sensor signal at a constant sampling rate and, depending on the rotational speed at which the respective revolution was performed, for example, measuring values based on the sampled values are determined by means of interpolation.
  • it can be reliably achieved that the same number of discrete measured values are available for each revolution. This allows reliable comparison of the respective sensor data acquired during the respective revolutions.
  • an order analysis of the sensor data is carried out for detecting the oscillation of the bearing device, wherein the order analysis describes the respective energy of the sensor signal for a plurality of orders.
  • the energy content of the oscillation of the bearing device is plotted over the order.
  • the order can be a multiple of the speed.
  • each order in a known manner corresponds to a predetermined multiple of the rotational frequency defined by the rotational speed.
  • a frequency spectrum of the sensor signal is determined for detecting the oscillation of the bearing device.
  • it can be determined, for example, whether the sensor signal has corresponding frequency components that are due to the vibration of the bearing device.
  • those orders which are assigned to a possible oscillation of the bearing device are selected from the plurality of orders of the order analysis, and the selected orders for detecting the oscillation are checked.
  • those orders are selected from the plurality of orders, which are assigned to a so-called bang effect or a stroke of the bearing device.
  • the order analysis can not take into account those orders which, with a high probability, do not originate from the vibration of the storage facility.
  • the orders can be removed from the order analysis, which are due to an imbalance, for example. These are in particular dominant orders. Furthermore, higher orders can be removed. Thus, those orders can be examined, possibly derived from a possible vibration. Thus, for example, computing time can be saved.
  • an average value is determined for checking the selected orders from a predetermined number of the selected orders, and the predetermined number of selected orders is assigned to the vibration of the storage facility if the determined average exceeds a predetermined threshold.
  • a predetermined threshold From the selected orders, which are highly likely from the vibration of the storage facility, each of a certain number can be selected. From this certain number then the mean can be determined. In principle, it is also conceivable that a median is determined. The determined average may then be compared to a predetermined threshold. If this threshold is exceeded, it can be assumed with high probability that the orders of which the mean value was determined are attributable to the oscillation. Thus, the vibration of the bearing device can be easily identified. In addition, it can be determined which of the selected orders are to be assigned to the oscillation.
  • This window will be moved step by step along the orders. For each of the steps of moving the window, the average is then formed and compared to the threshold.
  • the orders can be evaluated with a low computational power within a short time duration.
  • the current speed is reduced by a predetermined speed value for changing the speed, if the current speed is within a predetermined Endwindiererios.
  • a predetermined speed value for changing the speed, if the current speed is within a predetermined Endwariererios.
  • an end speed range may extend over a range of 85 percent of a final speed to 100 percent of the final speed. It is provided that the speed is reduced by the predetermined speed value, if the vibration of the bearing device is detected.
  • the washing machine can be operated in a speed range in which the bearing device, for example, is no longer excited to the vibrations.
  • the current speed is increased by a predetermined speed value for changing the speed, if the current speed is below the predetermined end speed range. If the speed of the laundry drum has not yet reached the final speed range, it is possible to increase the speed if the vibration of the bearing device is detected. It can also be provided that the current speed is increased within a predetermined time duration by the predetermined speed value. Thus, it can be achieved, for example, that the critical speed range in which the bearing device is excited to oscillate is left as quickly as possible.
  • An inventive household appliance for the care of items of laundry comprises a laundry drum for receiving laundry items, wherein the laundry drum is rotatably supported by means of a bearing device.
  • the household appliance comprises a drive motor for rotating the laundry drum at a current speed.
  • the household appliance comprises a sensor device for providing sensor data which describe a vibration of at least one component of the household appliance.
  • the household appliance comprises an evaluation device for receiving the sensor data and for driving the drive motor for modification the current speed depending on the received sensor data.
  • the evaluation device is designed to detect a vibration of the bearing device based on the sensor data and to drive the drive motor to change the rotational speed of the laundry drum, if the vibration of the bearing device is detected.
  • FIG. 1 shows a household appliance for the care of laundry items in a schematic representation
  • FIG. 2 is a flow chart of a method of operating the household appliance according to an embodiment of the present invention
  • FIG. 3 shows the evaluation of sensor signals of a sensor device of the household appliance on the basis of an order analysis
  • FIG. 4 is a schematic flow diagram of a method for evaluating the sensor signals
  • FIG. 5 is a schematic flow diagram for operating the household appliance according to an embodiment of the present invention.
  • Fig. 1 shows a schematic representation of a household appliance 1 according to an embodiment of the invention.
  • the household appliance 1 is a device for the care of laundry items, for example a washing machine, a tumble dryer or a washer-dryer.
  • the domestic appliance 1 has a laundry drum 2 for receiving items of laundry.
  • the laundry drum 2 is driven via a belt 3 by means of a drive device 4.
  • a direct drive can also be provided here.
  • the drive device 4 comprises an electric machine, which has a schematically indicated stator 5 as well as a rotor 6 likewise shown schematically.
  • the household appliance 1 has an evaluation device 7, by means of which the drive device 4 can be controlled.
  • the evaluation device 7 may include, for example, a microcontroller and / or a digital signal processor.
  • the household appliance 1 also comprises a control panel 8 with controls and optionally a display element or display. The control panel 8 is used to select an operating program and for setting further operating parameters of the household appliance. 1
  • the laundry drum 2 is mounted by means of a bearing device 9.
  • the bearing device 9 may have at least one roller bearing.
  • the household appliance 1 comprises a sensor device 10, which serves to detect vibrations of the bearing device 9.
  • the sensor device 10 can be, for example, an acceleration sensor that can absorb accelerations in three spatial directions. Vibrations of the bearing device 9 during operation of the household appliance 1 can be detected with the sensor device 10.
  • the sensor device 10 may be arranged, for example, in the region of the tub.
  • the sensor device 10 can also be designed to detect structure-borne noise and / or sound waves that result as a result of the vibration of the bearing device 9.
  • the oscillation of the bearing device 9 results, for example, in that the rolling bodies of the bearing device 9 lift off from the running surface in certain operating states and subsequently strike the running surface again.
  • the evaluation device 7 is connected to the sensor device 10 for data transmission. With the sensor device 10, sensor data are provided which describe the oscillation of the bearing device 9. These sensor data can then be evaluated by means of the evaluation device 7. If it is detected with the evaluation device 7 that the bearing device 9 oscillates, the drive motor 4 can be controlled accordingly. In particular, the rotational speed of the drive motor 4 and thus the rotational speed of the laundry drum 2 can be changed. Thus, the household appliance 1 can be operated at a speed at which the bearing device 9 is no longer excited to the vibrations. Thus, noise and in particular sound waves in the operation of the household appliance 1 can be reduced.
  • FIG. 2 shows a schematic flow diagram of a method for operating the household appliance 1.
  • the method is started in a step S1.
  • the method is started, for example, when the domestic appliance 1 or the drive device 4 reaches a starting rotational speed.
  • This starting speed may for example correspond to a predetermined spin speed. It can also be provided that the starting time or the time for the start of the process is made dependent on a loading amount of the laundry drum 2.
  • the method is started when it can be guaranteed that no resonance phenomena occur during the current and the following, increasing speed.
  • a sampling rate for the sensor device 10 or the acceleration sensor is specified.
  • the number of revolutions of the laundry drum 2 are determined.
  • a step S4 discrete measured values are determined on the basis of the sampled values of the sensor data and the specific number of revolutions of the laundry drum 2. In this case, the same number of discrete measured values can be determined for each of the revolutions. Thus, for example, a corresponding interpolation of the samples can be performed.
  • the determined discrete measured values are stored in a memory.
  • a step S6 a data reduction takes place.
  • the measured values can be converted to a number of 2 P.
  • data interpolation takes place.
  • the measured values can be entered one after the other in a common vector.
  • steps S6 and S7 make sure that the readings are the readings from multiple, complete drum revolutions. Subsequently, in a step S8, a frequency spectrum of the sensor signal or of the discrete measured values of the sensor signal is determined. Thereafter, an order analysis is performed or an order spectrum determined in a step S9. In a step S10, it is checked on the basis of the order analysis whether a vibration of the bearing device 9 is present. If an oscillation was detected, the speed of the drive device 4 is adjusted in a step S1 1. It should be noted that the speed is increased in the conventional process step up to a final speed. Increasing or decreasing the speed is a characteristic of the spin process itself. The method described here only influences the rotational speed if the oscillation of the bearing device 9 has been detected.
  • FIG. 3 shows schematically how the oscillation of the bearing device 9 can be detected on the basis of the order analysis.
  • a first diagram 11 of the order analysis is shown in FIG.
  • the individual orders 0 are plotted along the abscissa.
  • the ordinate describes the amount of energy of the respective orders.
  • those orders are determined that are not associated with the vibration of the bearing device 9. These are, for example, an offset 12 or a dominant order 13, which forms, for example, as a result of an imbalance.
  • higher orders 14 are not taken into account.
  • Another diagram 15 shows the selected orders that are relevant for detecting the vibration of the bearing device 9.
  • Another diagram 16 shows the check of these selected orders.
  • a window 17 is defined which comprises a predetermined number of selected orders.
  • the window 17 includes a predetermined number of selected orders.
  • a mean value 18 is determined.
  • the window 17 is along the orders gradually shifted. For each step or at each position then the average value 18 is determined.
  • step S12 shows a schematic flow diagram of a method for detecting the vibration of the bearing device 9 on the basis of the order analysis.
  • the method is started in a step S12.
  • step S13 as explained above in connection with FIG. 3, the respective average values are determined.
  • the window 17 is moved along the respective orders.
  • the arithmetic mean is then formed. By averaging very short orders, which arise in the calculation of the spectrum, can be compensated.
  • step S15 the method is continued in a step S15.
  • the predetermined number of consecutive average values 18 are greater than a certain factor times the average value at the start time.
  • step S16 the previous result is discarded. If the check in step S14 shows that the predetermined number of average values 18 following each other are greater than a certain factor times the mean value at the start time, the next mean value 18 in the series is checked and it is examined whether this is a predetermined one Factor, which may be, for example, 0.8 times the current mean 18, has dropped.
  • a predetermined one Factor which may be, for example, 0.8 times the current mean 18, has dropped.
  • step S18 it is checked in a step S18 whether a signal peak has been detected in the orders or the selected orders which is typical for the oscillation of the bearing device 9 or the oscillation generated thereby.
  • step S19 it can then be checked whether a predetermined number of signal peaks has been reached. If this is the case, an alarm can be output in a step S20 or the speed can be changed by means of the drive device 4.
  • FIG. 5 shows a schematic flow diagram for operating the household appliance 1 according to a further embodiment.
  • it is first checked in a step S21 whether the oscillation of the bearing device 9 based on the order analysis was detected.
  • a step S22 it is checked whether the predetermined final speed has been reached. If this is the case, the speed is reduced by a predetermined speed value in a step S23. This predetermined speed value may be, for example, 100 revolutions per minute.
  • the alarm which has been issued upon detecting the vibration of the stocker 9 is cleared.
  • a step S22 'it is checked whether the current rotational speed is greater than 85 percent of the final rotational speed. If this is the case, the speed in step S23 'can also be lowered by the predetermined speed value. It can also be provided that in a step S22 "it is checked whether the current rotational speed is less than 85 percent of the final rotational speed If this is the case, the current rotational speed can be increased in a step S23".
  • the household appliance 1 can be operated such that disturbing noises, which are due to the vibrations of the bearing device 9, are avoided. Thus, a low-noise operation of the household appliance 1 can be made possible.
  • the vibration of the bearing device 9 can be detected at an early stage.
  • this vibration of the bearing device 9 can be detected, for example, before the structure-borne noise propagates through the vibration of the bearing device, which can then result in an airborne sound again.
  • other statistical methods for evaluating the sensor signal can also be used. For example, only the frequency spectrum could be considered.
  • a group-based median can also be formed, which is compared, for example, with a corresponding threshold value.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un appareil ménager (1), destiné à l'entretien de pièces de linge, dans lequel un tambour à linge (2) destiné à recevoir des pièces de linge est mis en rotation à une vitesse de rotation actuelle au moyen d'un moteur d'entraînement (4). Le tambour à linge (2) est monté de manière rotative au moyen d'un dispositif de palier (9). Des données de détection, qui décrivent la vibration d'au moins un composant de l'appareil ménager (1), sont produites au moyen d'un dispositif de détection (10) et les données de détection sont reçues au moyen d'un dispositif d'évaluation (7). Le moteur d'entraînement (4) est commandé en fonction des données de détection reçues pour modifier la vitesse de rotation actuelle. La vibration du dispositif de palier (9) est détectée au moyen du dispositif d'évaluation (7) sur la base des données de détection et le moteur d'entraînement (4) est commandé pour modifier la vitesse de rotation actuelle en cas de détection de la vibration du moyen de palier (9).
PCT/EP2016/071587 2015-10-21 2016-09-13 Procédé pour faire fonctionner un appareil ménager avec détection de la vibration d'un dispositif de palier et appareil ménager WO2017067716A1 (fr)

Applications Claiming Priority (2)

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DE102015220461.8A DE102015220461A1 (de) 2015-10-21 2015-10-21 Verfahren zum Betreiben eines Haushaltsgeräts mit Erkennung einer Schwingung einer Lagereinrichtung sowie Haushaltsgerät
DE102015220461.8 2015-10-21

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WO2017067716A1 true WO2017067716A1 (fr) 2017-04-27

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KR102604224B1 (ko) 2018-12-11 2023-11-21 엘지전자 주식회사 세탁기 제어방법
DE102022201315A1 (de) 2022-02-09 2023-08-10 Robert Bosch Gesellschaft mit beschränkter Haftung Computerimplementiertes Verfahren zur Bestimmung von Strukturresonanzfrequenzen in einem technischen System

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US5930855A (en) * 1997-12-23 1999-08-03 Maytag Corporation Accelerometer for optimizing speed of clothes washer
EP2169102A1 (fr) * 2007-09-04 2010-03-31 Panasonic Corporation Machine à laver, et procédé et programme pour commander une vitesse de rotation de tambour
DE102010001845A1 (de) * 2010-02-11 2011-08-11 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Einrichtung zur Überwachung einer im Betrieb schwingenden Vorrichtung eines Haushaltsgeräts, Haushaltsgerät zur Pflege von Wäschestücken sowie Verfahren zum Betreiben eines Haushaltsgeräts

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DE3117106A1 (de) * 1981-04-30 1982-11-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt "einrichtung zum verhindern von schaedlichen schwingungen bei einer trommelwaschmaschine"
DE102004043752B4 (de) * 2004-09-10 2007-12-06 Schaeffler Kg Messvorrichtung mit einer optischen Sensorik und ein Verfahren mit der Messvorrichtung
DE102006017530A1 (de) * 2006-04-13 2007-10-18 BSH Bosch und Siemens Hausgeräte GmbH Maschine zum Waschen und/oder Trocknen von Wäsche sowie Verfahren zum Erfassen von Unwuchtparametern
CN101415876B (zh) * 2006-04-13 2012-08-08 Bsh博世和西门子家用器具有限公司 用于清洗和/或干燥衣物的机器
DE102011083568A1 (de) 2011-09-28 2013-03-28 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Identifizieren einer Eigenschaft einer periodisch schwingenden Einheit

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Publication number Priority date Publication date Assignee Title
US5930855A (en) * 1997-12-23 1999-08-03 Maytag Corporation Accelerometer for optimizing speed of clothes washer
EP2169102A1 (fr) * 2007-09-04 2010-03-31 Panasonic Corporation Machine à laver, et procédé et programme pour commander une vitesse de rotation de tambour
DE102010001845A1 (de) * 2010-02-11 2011-08-11 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Einrichtung zur Überwachung einer im Betrieb schwingenden Vorrichtung eines Haushaltsgeräts, Haushaltsgerät zur Pflege von Wäschestücken sowie Verfahren zum Betreiben eines Haushaltsgeräts

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