WO2002018900A3 - Method and apparatus for measuring moment of friction of an electrical motor - Google Patents

Method and apparatus for measuring moment of friction of an electrical motor Download PDF

Info

Publication number
WO2002018900A3
WO2002018900A3 PCT/IL2001/000807 IL0100807W WO0218900A3 WO 2002018900 A3 WO2002018900 A3 WO 2002018900A3 IL 0100807 W IL0100807 W IL 0100807W WO 0218900 A3 WO0218900 A3 WO 0218900A3
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
speed
friction
sample
moment
Prior art date
Application number
PCT/IL2001/000807
Other languages
French (fr)
Other versions
WO2002018900A2 (en
Inventor
Eyal Cohen
Menachem Cohen
Original Assignee
Mea Motor Inspection Ltd
Eyal Cohen
Menachem Cohen
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 Mea Motor Inspection Ltd, Eyal Cohen, Menachem Cohen filed Critical Mea Motor Inspection Ltd
Priority to AU2001282490A priority Critical patent/AU2001282490A1/en
Publication of WO2002018900A2 publication Critical patent/WO2002018900A2/en
Publication of WO2002018900A3 publication Critical patent/WO2002018900A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms
    • G01M13/028—Acoustic or vibration analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/02—Measuring coefficient of friction between materials

Abstract

Method and apparatus for determining the moment of friction exerted on the rotor of an electric motor (20). The motor is connected to a power source (23) for driving the rotor at a selected speed and is thereafter disconnected from the power source so as to allow the rotor to decelerate freely, without any external mechanical or electrical load. During the deceleration, successive speed samples of rotation of the rotor are measured at a plurality of time instants; and for any sample speed, the difference between each speed sample and a preceding speed sample is determined thus permitting calculation therefrom of a correspoinding value for the moment of friction.
PCT/IL2001/000807 2000-08-29 2001-08-29 Method and apparatus for measuring moment of friction of an electrical motor WO2002018900A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001282490A AU2001282490A1 (en) 2000-08-29 2001-08-29 Method and apparatus for measuring moment of friction of an electrical motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL13814000A IL138140A0 (en) 2000-08-29 2000-08-29 Method and apparatus for measuring moment of friction of an electrical motor
IL138140 2000-08-29

Publications (2)

Publication Number Publication Date
WO2002018900A2 WO2002018900A2 (en) 2002-03-07
WO2002018900A3 true WO2002018900A3 (en) 2002-05-16

Family

ID=11074571

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2001/000807 WO2002018900A2 (en) 2000-08-29 2001-08-29 Method and apparatus for measuring moment of friction of an electrical motor

Country Status (3)

Country Link
AU (1) AU2001282490A1 (en)
IL (1) IL138140A0 (en)
WO (1) WO2002018900A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008047026B4 (en) * 2008-09-13 2016-06-09 Drägerwerk AG & Co. KGaA ventilator

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795131A (en) * 1971-03-17 1974-03-05 Rockwell Mfg Co Spin testing apparatus for turbine-type flow meters
US3964301A (en) * 1974-10-21 1976-06-22 Rca Corporation Engine brake horsepower test without external load
US4204425A (en) * 1978-06-29 1980-05-27 Westinghouse Electric Corp. Method of testing induction motors
US4423632A (en) * 1981-02-25 1984-01-03 Qyl Inc. Method and apparatus to determine the imbalance in a rotating object
US4649328A (en) * 1985-06-26 1987-03-10 General Electric Co. Method for automatic speed loop tune-up in a machine drive
JPH0694579A (en) * 1992-09-16 1994-04-05 Hitachi Chem Co Ltd Roller drive type brake tester
US5505078A (en) * 1994-09-09 1996-04-09 Storar; Robert C. Method and apparatus for measuring friction torque
JP2001159596A (en) * 1999-12-02 2001-06-12 Toyota Motor Corp Method and device for friction test

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795131A (en) * 1971-03-17 1974-03-05 Rockwell Mfg Co Spin testing apparatus for turbine-type flow meters
US3964301A (en) * 1974-10-21 1976-06-22 Rca Corporation Engine brake horsepower test without external load
US4204425A (en) * 1978-06-29 1980-05-27 Westinghouse Electric Corp. Method of testing induction motors
US4423632A (en) * 1981-02-25 1984-01-03 Qyl Inc. Method and apparatus to determine the imbalance in a rotating object
US4649328A (en) * 1985-06-26 1987-03-10 General Electric Co. Method for automatic speed loop tune-up in a machine drive
JPH0694579A (en) * 1992-09-16 1994-04-05 Hitachi Chem Co Ltd Roller drive type brake tester
US5505078A (en) * 1994-09-09 1996-04-09 Storar; Robert C. Method and apparatus for measuring friction torque
JP2001159596A (en) * 1999-12-02 2001-06-12 Toyota Motor Corp Method and device for friction test

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 356 (P - 1765) 5 July 1994 (1994-07-05) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 23 10 February 2001 (2001-02-10) *

Also Published As

Publication number Publication date
WO2002018900A2 (en) 2002-03-07
AU2001282490A1 (en) 2002-03-13
IL138140A0 (en) 2001-10-31

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