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AU2001268959A1 - A control for two or more dc motors, in particular actuators for adjustment of furniture - Google Patents

A control for two or more dc motors, in particular actuators for adjustment of furniture

Info

Publication number
AU2001268959A1
AU2001268959A1 AU2001268959A AU6895901A AU2001268959A1 AU 2001268959 A1 AU2001268959 A1 AU 2001268959A1 AU 2001268959 A AU2001268959 A AU 2001268959A AU 6895901 A AU6895901 A AU 6895901A AU 2001268959 A1 AU2001268959 A1 AU 2001268959A1
Authority
AU
Australia
Prior art keywords
voltage
control
pseudomotor
furniture
motors
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.)
Abandoned
Application number
AU2001268959A
Inventor
Jeppe Bastholm
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.)
Linak AS
Original Assignee
Linak AS
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 Linak AS filed Critical Linak AS
Publication of AU2001268959A1 publication Critical patent/AU2001268959A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
    • H02P5/50—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another by comparing electrical values representing the speeds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018—Control or drive mechanisms

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

A control for DC motors, in particular actuators driven by a DC motor for adjustment of furniture, such as tables, beds, chairs, etc. includes a pseudomotor which is capable of supplying a voltage that corresponds to the motor speed on the basis of the current and voltage supplied to the motor. The voltage of the pseudomotor is supplied to an adjustable power supply, where it is compared with an internal reference voltage and adjusts the voltage difference down to the smallest possible difference between the voltage of the pseudomotor and the internal reference voltage. For greater accuracy, the control additionally includes a compensation circuit configured to evaluate a dominating frequency in the commutator noise. Thus, there is provided a simple and low cost control for parallel running of two or more actuators.
AU2001268959A 2000-07-05 2001-07-05 A control for two or more dc motors, in particular actuators for adjustment of furniture Abandoned AU2001268959A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DKPA200001048 2000-07-05
DKPA200001048 2000-07-05
DKPA200100092 2001-01-18
DKPA200100092 2001-01-18
PCT/DK2001/000470 WO2002003526A2 (en) 2000-07-05 2001-07-05 A control for two or more dc motors, in particular actuators for adjustment of furniture

Publications (1)

Publication Number Publication Date
AU2001268959A1 true AU2001268959A1 (en) 2002-01-14

Family

ID=26068850

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001268959A Abandoned AU2001268959A1 (en) 2000-07-05 2001-07-05 A control for two or more dc motors, in particular actuators for adjustment of furniture

Country Status (9)

Country Link
US (1) US6841953B2 (en)
EP (1) EP1314234B1 (en)
JP (1) JP2004503194A (en)
CN (1) CN1297064C (en)
AT (1) ATE496415T1 (en)
AU (1) AU2001268959A1 (en)
DE (1) DE60143897D1 (en)
DK (1) DK1314234T3 (en)
WO (1) WO2002003526A2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10157650C1 (en) * 2001-11-26 2003-04-24 Cimosys Ltd Electric motor setting drive for adjustable furniture item has separate drive units at opposite ends of support strut
GB2393797B (en) * 2002-10-04 2006-02-22 Eschmann Holdings Ltd Medical apparatus
CZ14692U1 (en) * 2004-04-30 2004-09-06 E.C.Sys S. R. O. Electronic circuit for controlling two or more DC motors in independent drives for positioning furniture, especially beds, tables and chairs
DE102005005471A1 (en) * 2005-02-04 2006-08-24 Barthelt, Hans-Peter, Dipl.-Ing. Care bed with balancing circuit
DE102005018686B4 (en) * 2005-04-21 2007-03-22 Barthelt, Hans-Peter, Dipl.-Ing. Care bed with double motor drive
DE102006033712A1 (en) * 2006-07-20 2008-01-31 Logicdata Electronic & Software Entwicklungs Gmbh Control for electrically adjustable furniture
DE102007013354A1 (en) * 2007-03-16 2008-09-18 Barthelt, Hans-Peter, Dipl.-Ing. Care bed with electrical emergency lowering
US20090299689A1 (en) * 2008-06-02 2009-12-03 David Robert Stubben Portable Leveling Table
US20100000017A1 (en) * 2008-07-07 2010-01-07 Laloge Dennis P Lift System with Kinematically Dissimilar Lift Mechanisms
DE102008051247B4 (en) * 2008-10-10 2010-08-26 Logicdata Electronic & Software Entwicklungs Gmbh Power supply
DE102009015690A1 (en) * 2009-03-31 2010-10-07 Logicdata Electronic & Software Entwicklungs Gmbh Linear drive and table with linear drive
US9375081B2 (en) 2009-12-17 2016-06-28 Linak A/S Wall-mounted cabinet
US8959681B2 (en) 2010-12-20 2015-02-24 Hill-Rom Services, Inc. Ground sensor control of foot section retraction
US9713387B2 (en) * 2012-02-28 2017-07-25 Dewertokin Gmbh Electromotive furniture drive for a piece of furniture, a method for monitoring a pulse-width ratio of an electromotive furniture drive, and a corresponding piece of furniture
WO2014037683A1 (en) * 2012-09-04 2014-03-13 Khalifa University of Science, Technology, and Research Method and system for motor speed control
US10437213B2 (en) 2015-06-19 2019-10-08 Hill-Rom Services, Inc. Methods and apparatuses for controlling angular orientations of a person support apparatus
JP7237963B2 (en) * 2017-11-20 2023-03-13 リナック エー／エス Determining the current flowing through one of several electric motors
WO2020177823A1 (en) * 2019-03-04 2020-09-10 Linak A/S A linear actuator system and a method of setting up and programming power limit values for such an actuator system

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012134A (en) * 1974-05-09 1977-03-15 Computer Specialties Corporation Bidirectional web medium drive
US3926513A (en) * 1974-05-09 1975-12-16 Computer Specialties Corp Bidirectional web medium drive
US4025972A (en) * 1974-08-09 1977-05-31 Hill-Rom Company, Inc. Elevating and Trendelenburg mechanism for an adjustable bed
JPS5279910A (en) * 1975-12-22 1977-07-05 Mfe Corp Motor control circuit for tape drive unit
US4174237A (en) * 1978-07-03 1979-11-13 International Paper Company Process and apparatus for controlling the speed of web forming equipment
NL8102072A (en) * 1981-04-28 1982-11-16 Moba Holding Barneveld Bv DEVICE FOR SIMULTANEOUS DRIVING OF TWO MOTORS.
FR2507794A1 (en) * 1981-06-12 1982-12-17 Thomson Csf ULTRASOUND SERVICE OF MECHANICAL ELEMENTS IN RELATIVE MASTER-SLAVE POSITION AND RADIOLOGY APPARATUS HAVING SUCH ASSISTANCE
EP0239655A1 (en) * 1986-04-01 1987-10-07 Océ-Nederland B.V. Electronic proportional-integral-controller in digital execution
US4740732A (en) * 1986-09-03 1988-04-26 Hewlett-Packard Company Adaptive rewind for tape drive
GB2250189B (en) * 1990-11-28 1993-11-24 Nesbit Evans & Co Ltd Beds
GB2252495B (en) * 1991-02-06 1994-12-14 Nesbit Evans & Co Ltd "Adjustable beds"
US5569992A (en) * 1992-03-31 1996-10-29 Yang; Tai-Her DC shunt (or compound) motor and its related circuit with controllable dynamic characteristics
US5239247A (en) * 1992-06-17 1993-08-24 Cincinnati Milacron Reconfigurable master-slave control
JPH06165519A (en) * 1992-11-27 1994-06-10 Sanyo Electric Co Ltd Method for driving electric motor
US5715548A (en) * 1994-01-25 1998-02-10 Hill-Rom, Inc. Chair bed
US5544376A (en) * 1994-01-31 1996-08-13 Maxwell Products, Inc. Articulated bed with customizable remote control
KR0171240B1 (en) * 1994-05-17 1999-05-01 가다오까 마사다까 Vehicle-mounted motor drive apparatus
US6106576A (en) * 1994-07-19 2000-08-22 Maxwell Products, Inc. Adjustable massage bed assembly with handheld control unit having automatic stop safety feature
GB9901221D0 (en) * 1998-12-04 1999-03-10 Huntleigh Technology Plc Bed
US6285146B1 (en) * 1998-08-07 2001-09-04 Nidec America Corporation Apparatus and method of regulating the speed of a brushless DC motor
EP1079511A1 (en) * 1999-08-26 2001-02-28 Linak A/S Power supply for DC-motors
US6595144B1 (en) * 2000-05-17 2003-07-22 Suspa Incorporated Adjustable leg assembly

Also Published As

Publication number Publication date
EP1314234B1 (en) 2011-01-19
CN1441993A (en) 2003-09-10
CN1297064C (en) 2007-01-24
US6841953B2 (en) 2005-01-11
US20030117094A1 (en) 2003-06-26
WO2002003526A3 (en) 2003-04-03
DE60143897D1 (en) 2011-03-03
DK1314234T3 (en) 2011-03-21
ATE496415T1 (en) 2011-02-15
EP1314234A2 (en) 2003-05-28
WO2002003526A2 (en) 2002-01-10
JP2004503194A (en) 2004-01-29

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