WO2000025718A3 - Power wheelchair having a brushless, gearless motor and utilizing a trapezoidal wave function drive controller - Google Patents

Power wheelchair having a brushless, gearless motor and utilizing a trapezoidal wave function drive controller Download PDF

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Publication number
WO2000025718A3
WO2000025718A3 PCT/US1999/019426 US9919426W WO0025718A3 WO 2000025718 A3 WO2000025718 A3 WO 2000025718A3 US 9919426 W US9919426 W US 9919426W WO 0025718 A3 WO0025718 A3 WO 0025718A3
Authority
WO
WIPO (PCT)
Prior art keywords
drive wheels
wave function
brushless
trapezoidal wave
utilizing
Prior art date
Application number
PCT/US1999/019426
Other languages
French (fr)
Other versions
WO2000025718A2 (en
Inventor
Joseph B Ii Richey
Theodore D Ii Wakefield
Roland A Mentessi
Terry Benton
George R Cockram
Original Assignee
Invacare Corp
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 Invacare Corp filed Critical Invacare Corp
Priority to AU61308/99A priority Critical patent/AU6130899A/en
Publication of WO2000025718A2 publication Critical patent/WO2000025718A2/en
Publication of WO2000025718A3 publication Critical patent/WO2000025718A3/en

Links

Classifications

    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • A61G5/043—Mid wheel drive
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • A61G5/045—Rear wheel drive
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1005—Wheelchairs having brakes
    • A61G5/1032—Wheelchairs having brakes engaging an element of the drive or transmission, e.g. drive belt, electrodynamic brake
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1089—Anti-tip devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1005—Wheelchairs having brakes
    • A61G5/101—Wheelchairs having brakes of the parking brake type, e.g. holding the wheelchair
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

A power wheelchair is provided having opposing drive wheels wherein the axles of the drive wheels are coupled directly to the rotor of drive motors. These motors are brushless motors, wherein each has a brake located within the motor housing which acts directly on the rotor. The brake is a fail-safe brake since it is in a non-engaged position when activated. In another embodiment of the invention, permanent magnet rings of the motor have been magnetized so as to generate a trapezoidal wave function corresponding to the relative displacement of the rotor to the stator. This wave function is used by a microprocessor to independently control the two opposing drive wheels which may be rear drive wheels, mid-drive wheels or front drive wheels.
PCT/US1999/019426 1998-10-30 1999-08-30 Power wheelchair having a brushless, gearless motor and utilizing a trapezoidal wave function drive controller WO2000025718A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU61308/99A AU6130899A (en) 1998-10-30 1999-08-30 Power wheelchair having a brushless, gearless motor and utilizing a trapezoidal wave function drive controller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18369998A 1998-10-30 1998-10-30
US09/183,699 1998-10-30

Publications (2)

Publication Number Publication Date
WO2000025718A2 WO2000025718A2 (en) 2000-05-11
WO2000025718A3 true WO2000025718A3 (en) 2000-10-05

Family

ID=22673957

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/019426 WO2000025718A2 (en) 1998-10-30 1999-08-30 Power wheelchair having a brushless, gearless motor and utilizing a trapezoidal wave function drive controller

Country Status (2)

Country Link
AU (1) AU6130899A (en)
WO (1) WO2000025718A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9320661B2 (en) 2010-07-15 2016-04-26 Permobil Ab Electric mid-wheel drive wheelchair

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO311555B1 (en) * 2000-02-09 2001-12-10 Stefan Solberg Wheelchair for electric wheelchair
US7896394B2 (en) 2005-08-18 2011-03-01 Sunrise Medical Hhg, Inc. Midwheel drive wheelchair with independent front and rear suspension
DE102009051118B4 (en) * 2009-10-13 2014-04-30 Otto Bock Mobility Solutions Gmbh electric wheelchair
CN101823443B (en) * 2010-05-27 2012-11-07 中铁建设集团有限公司 Electromagnetic mobile platform
DE102013109863B4 (en) * 2013-09-10 2016-11-03 Alber Gmbh 2Drehmomentabstützvorrichtung for mounting a provided with a hub motor drive wheel on a wheelchair
CN105276347B (en) * 2015-10-15 2017-08-29 无锡瑞巴斯医疗器械有限公司 A kind of drive system of Mobile medical workstation
CN106923981B (en) * 2015-12-28 2019-01-25 常州三心堂康复护理用品有限公司 A kind of electric wheelchair with massage cushion
DE102016118018B4 (en) * 2016-09-23 2018-12-06 Otto Bock Mobility Solutions Gmbh Chassis for a mobility aid and for a power wheelchair
US10864127B1 (en) 2017-05-09 2020-12-15 Pride Mobility Products Corporation System and method for correcting steering of a vehicle

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898544A (en) * 1972-02-03 1975-08-05 Canon Kk DC brushless motor
US4125169A (en) * 1976-06-17 1978-11-14 National Research Development Corporation Wheelchairs
US4323133A (en) * 1979-03-05 1982-04-06 Williams Patrick Y Folding frameworks and wheel-chairs
DE3826097A1 (en) * 1988-08-01 1990-02-08 Ortopedia Gmbh Method for controlling the direction and speed of electrically driven wheelchairs, and an arrangement for carrying out the method
US5161361A (en) * 1991-08-30 1992-11-10 Platt Saco Lowell Corporation Motor-driven spindle assembly for ring spinning
US5246082A (en) * 1991-08-17 1993-09-21 Haas & Alber Haustechnik Und Apparatebau Gmbh Small vehicle, particularly rolling chair with foldable chair frame
US5343128A (en) * 1990-04-12 1994-08-30 Beltrame Carlo L Drive assistance device for a golf buggy
US5418451A (en) * 1991-11-15 1995-05-23 Heidelberger Druckmaschinen Ag Apparatus for measuring at least one state variable of a brushless direct-current motor
WO1996022895A1 (en) * 1995-01-23 1996-08-01 Egon Schmid Propulsion unit for an electrically operated vehicle
FR2738147A3 (en) * 1995-08-29 1997-03-07 Invacare Deutschland Gmbh Wheelchair with interchangeable rear wheels
US5717316A (en) * 1996-07-15 1998-02-10 Nihon Riken Co., Ltd. Motive power generating apparatus utilizing energy of permanent magnet

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898544A (en) * 1972-02-03 1975-08-05 Canon Kk DC brushless motor
US4125169A (en) * 1976-06-17 1978-11-14 National Research Development Corporation Wheelchairs
US4323133A (en) * 1979-03-05 1982-04-06 Williams Patrick Y Folding frameworks and wheel-chairs
DE3826097A1 (en) * 1988-08-01 1990-02-08 Ortopedia Gmbh Method for controlling the direction and speed of electrically driven wheelchairs, and an arrangement for carrying out the method
US5343128A (en) * 1990-04-12 1994-08-30 Beltrame Carlo L Drive assistance device for a golf buggy
US5246082A (en) * 1991-08-17 1993-09-21 Haas & Alber Haustechnik Und Apparatebau Gmbh Small vehicle, particularly rolling chair with foldable chair frame
US5161361A (en) * 1991-08-30 1992-11-10 Platt Saco Lowell Corporation Motor-driven spindle assembly for ring spinning
US5418451A (en) * 1991-11-15 1995-05-23 Heidelberger Druckmaschinen Ag Apparatus for measuring at least one state variable of a brushless direct-current motor
WO1996022895A1 (en) * 1995-01-23 1996-08-01 Egon Schmid Propulsion unit for an electrically operated vehicle
FR2738147A3 (en) * 1995-08-29 1997-03-07 Invacare Deutschland Gmbh Wheelchair with interchangeable rear wheels
US5717316A (en) * 1996-07-15 1998-02-10 Nihon Riken Co., Ltd. Motive power generating apparatus utilizing energy of permanent magnet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9320661B2 (en) 2010-07-15 2016-04-26 Permobil Ab Electric mid-wheel drive wheelchair

Also Published As

Publication number Publication date
AU6130899A (en) 2000-05-22
WO2000025718A2 (en) 2000-05-11

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