09)|ae TAT
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`European
`Patent Office
`mse
`a1
`EP 2826700 A1
`
`
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`(12)
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`EUROPEAN PATENT APPLICATION
`
`{43} Date of publication:
`21.01.2015 Bulletin 2015/04
`
`(51) Int Cl.:
`B62M 6/45 (2070.01)
`
`(21) Application number: 14175757.5
`
`(22) Dateoffiling: 04.07.2014
`
`
`{84} Designated Contracting States:
`AL AT BE BG CH CY CZ DE DK EE ES FIFR GB
`GR HR HUIEISIT LILT LU LV MC MK MT NL NO
`PL PT RO.RS SE SISK SM TR
`Designated Extension States:
`BA ME
`
`* Lee, Geun Ho
`139-785 Seoul (KR)
`¢ Hong, Bok Young
`443-743 Gyeonggi-Do (KR)
`« Kim, Gyoung Tai
`443-743 Gyeonggi-Do (KR)
`
`(39) Priority: 16.07.2013. KR 20130083742
`
`(71) Applicant: Samsung Electro-Mechanics Go., Ltd.
`Suwon-si, Gyeonggi-do 443-743 (KR)
`
`(74) Representative: Heine, Christian Klaus
`KNH Patentanwalte Kahlhéfer Neumann
`RéBler Heine PartG mbB
`Postfach 10 33 63
`40024 Diisseldorf (DE)
`
`(72) Inventors:
`*« Kim, Se Joo
`443-743 Gyeonggi-Do(KR)
`
`(54) Motor control system for electric bicycle and method of controlling the same
`
`Disclosed herein is a motor control system for
`(57)
`an electric bicycle, the system including: a gradient sens-
`ing unit sensing a gradient of a bicycle; a bicycle accel-
`eration sensing unit sensing an acceleration of the bicy-
`cle; a pedal acceleration sensing unit sensing an accel-
`eration of a pedal; and a moter drive control unitto control
`
`driving of a motor, wherein the motor drive control unit
`receives sensed values from the gradient sensing unit,
`the bicycle acceleration sensing unit, and the pedal ac-
`celeration sensing unit so as to estimate pedal torque,
`thereby controlling driving of the motor.
`
`EP2826700A1
`
`
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`Printed by Jouve, 75001 PARIS (FR}
`
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`EP 2 826 700 A1
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`Description
`
`CROSS REFERENCE TO RELATED APPLICATION
`
`[0001] This application claims the benefit of Korean
`Patent Application No. 10-2013-0083742, filed on July
`16, 2013, entitled "ELETRICITY BIKE CONTROL SYS-
`TEM AND METHOD FOR CONTROL. THE SAME,"
`which is: hereby incorporated by reference in its entirety
`into this application.
`
`BACKGROUND OF THE INVENTION
`
`1. Technical Field
`
`[0002] The present invention relates to a motor control
`system for an electric bicycle and:a method of controlling
`the same.
`
`2. Description of the Related Art
`
`10,
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`20
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`netic field generated as a torsion sensor coil is torsioned
`and generates voltage, and a strain gauge type torque
`sensor in which a torsion sensor is installed between a
`
`pedal and a crank.
`[0011]
`Such torque sensors, however, are very costly.
`Measuring torque is about sensing torsion ofa shaft, and
`since the. amount of torsion is very small, it needs to be
`precisely amplified.
`[0012]
`Further, since a shaft is rotated while-a control-
`ler that receives information is. not rotated, many tech-
`nologies. are required to transmit the information. As a
`result, a torque sensoris very costly and thus:so become
`electric bicycles.
`[0013] Moreover, since a torque sensor occupies a
`large space of the bicycle and requires many installation
`components whenit-is installed on the bicycle, so that
`there is difficulty in installation and maintenance.
`[0014]
`Further, the weight of an electric bicycle is in-
`creased due to the weight of the torque sensor, so that
`when the bicycle goes up a sloped road, the assist ratio
`of a motor increases and thus battery consumption in-
`creases.
`
`[0003] Abicycle includes a frontwheel which is.a steer-
`ing wheel and a rear wheel which is a driving wheel ar-
`ranged in the line at the front and rear sides of a frame,
`respectively. A bicycle travels forward as a rider steps
`down a pedal linked.to the rear wheel so as to rotate the
`rear wheel. In order to transmit power generated by the
`pedal of a bicycle to. the rear wheel, power transmission
`device:such as a chain and a gear is installed.
`[0004] A chain type power transmission device in-
`cludes a‘driving sprocketinstalled on’one side of a pedal,
`a driven sprocket installed at the rear wheel which is a
`[0016] The presentinvention has been madein an ef-
`driving wheel and having a diameter smaller than that of
`fort to provide a motor control system for an electric bi-
`the driving sprocket, and a chain connecting the driving
`cycle and a-method of controlling the same which control
`sprocket to the driven sprocket.
`driving of a motor by sensing the gradient of a bicycle,
`[0005]
`In this configuration, when a rider steps down
`the acceleration of the bicycle, and the acceleration of a
`the pedal, the driving sprocket integrated with the pedal
`is rotated, and at the same time the rear wheellinked to
`pedal so as to estimate pedal torque.
`[0017]
`Further, the present invention has been made
`the driven sprocket by the chain is also rotated, such that
`in an effort to provide.a motor control system for an elec-
`the bicycle travels forward.
`trie bicycle and a method of controlling the same with
`[9006]
`Since a bicycle movesby a rider’s pedal effort,
`improved ride comfort.
`iteasily travels on a flatland but requires much effortwhen
`[0048] According tea first preferred embodiment of the
`it goes up a sloped road such asahill.
`[0007]
`To assist the bicyclist, an electric bicycle has
`present invention, there is. provided a motor control sys-
`been developed recently which moves by using driving
`tem for an electric bicycle, the system including: a gra-
`force-of a motor, in addition to a rider’s pedal effort.
`dient sensing unit sensing a gradient of a bicycle: a bi-
`[0008]
`Insuch an electric bicycle, a battery-driven mo-
`cycle acceleration sensing unit sensing an acceleration
`tor is used. The operation of such an electric bicycle is
`of the bicycle; a pedal acceleration sensing unit. sensing
`selected among the modes including a mode in which
`an acceleration of a pedal; and a motor drive control unit
`to control driving of a motor, wherein the. motor drive con-
`the. bicycle moves by a rider’s pedal effort, a mode in
`trol unitreceives sensed values from the gradientsensing
`which it travels only by the power from a battery-driven
`motor, and a mode in which it moves by bath of them.
`unit, the bicycle acceleration sensing unit, and the pedal
`[0069]
`Existing electric bicycle includes a torque sen-
`acceleration sensing unit so as te estimate pedal torque,
`sor onthe shaft of a pedal so that driving force-of a motor
`thereby controlling driving of the motor.
`is. automatically adjusted according to a signal output
`[0079] The motor control system may further include
`from the torque sensor whén it goes up a hill.
`a three-axis acceleration sensor, wherein the gradient
`[0010] Types of torque sensors include a magnetic
`sensing unit.and the bicycle acceleration sensing unit
`sense the gradient of the bicycle and the acceleration of
`type torque sensor in which an inductor senses a mag-
`
`[Prior Art Document]
`
`[Prior Art Document]
`
`(Patent Document 1) Korean Patent Laid-open
`[0015]
`Publication No. 2012-0132593
`
`SUMMARYOF THE INVENTION
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`the bicycle, respectively, using the three-axis accelera-
`tion sensor.
`
`[0020] The motor control system may. further include
`a pedal velocity sensor sensing pedal velocity, wherein
`the pedal acceleration sensing unit senses a pedal ac-
`celeration value by differentiating a pedal velocity value
`received from the pedal velocity sensor.
`[0021] The pedal velocity sensor may count the rota-
`tions of a rotation shaft of the pedal.
`[0022] The motor contrcl system may further include
`a memory unit in which a motor assist setting value.ac-
`cording to pedal torque is stored, wherein the motor drive
`control unit compares the estimated pedal torque with
`the setting value stored inthe memary unitse as to contro]
`driving of the motor.
`[0023] According to a second preferred embodiment
`of the present invention, there is provided:a method of
`controlling a motor control system for an electric bicycle,
`the method inciuding: sensing.a gradient of a bicycle by
`a gradient sensing unit, an acceleration of the bicycle by
`a bicycle acceleration sensing unit; and an acceleration
`of a pedal by a pedal acceleration sensing unit; and con-
`trolling, by a motor drive control unit, driving of a motor
`by receiving the sensed values from the gradient sensing
`unit, the bicycle acceleration sensing unit, and the pedal
`acceleration sensing unit to estimate pedal torque.
`[0024] The sensing may include sensing the gradient
`of the. bicycle and the acceleration of the bicycle by the
`gradient sensing unit and the bicycle acceleration sens-
`ing unit, respectively, using a threeé-axis-acceleration sen-
`sor.
`
`[0025] Thesensing mayinclude obtaining, by the pedal
`acceleration sensing unit, a pedal acceleration by differ-
`entiating a pedal velocity value received from a pedal
`velacity sensor to sense a pedal velocity.
`[0026] The pedal velocity sensor may count the rota-
`tions of a rotation shaft of the pedal.
`[0027] The controlling may include comparing, by the
`motor drive control unit, the-estimated pedal torque with
`the setting value stored in a memory unit.so as to control
`driving of the motor.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[9028] The above and other objects, features. and ad-
`vantages of the present invention will be more clearly
`understood fram the following detailed description taken
`in conjunction with the accompanying drawings, inwhich:
`
`is a view of an electric bicycle employing a
`1
`FIG.
`motor contral system for an electric bicycle according
`fo a preferred embodiment of the present invention;
`and
`
`FIG..2 is a diagram of a motor conirol system for an
`electric bicycle-according to a preferred embodiment
`of the present inventian.
`
`DESCRIPTION OF THE PREFERRED EMBODIMENTS
`
`[0029] The objects, features. and advantages of the
`present invention will be more clearly understood from
`the following detailed description of the preferred embod-
`iments taken in conjunction with the accompanying craw-
`ings. Throughout the accompanying drawings, the same
`reference. numerals are used to designate the same. or
`similar components, and redundant descriptions thereof
`are omitted. Further,
`in the following description, the
`terms. “first,” “second,” "one side,” “the other side" and
`the like are. used to differentiate a certain componentfrom
`other components, but the configuration of such compo-
`nents should not be construedto be limited by the terms.
`Further, in the description of the present invention, when
`itis determined that the detailed description of the related
`art would obscure the gist of the present invention, the
`description thereof will be omitted.
`the
`[0030] Hereinafter, preferred embodiments of
`present invention will be described in detail with refer-
`ence to the attached drawings.
`[0031]
`FIG. 1 isa view of an electric bicycle employing
`a motor control system for an electric bicycle according
`to.a preferred embodimentof the present invention; and
`FIG. 2 is adiagram of a motor control system for an elec-
`tric bicycle according to a preferred embodiment of the
`present invention.
`[0032] Referring to FIGS. 4 and 2,a motor control sys-
`tem for an electric bicycle according to a preferred em-
`bodiment of the present invention includes a gradient
`sensing unit 140, a bicycle acceleration sensing unit. 150,
`a pedal acceleration sensing unit 160, and a motor drive
`control unit 120, to drive.a motor 14.
`[0033] The frontwheel 12 and the rear wheel 13 of the
`electric bicycle 10 is supported by a frame (not shown),
`and the chain 16 that is rotated by power transmission
`means is engaged with the rear wheel. The. powertrans-
`mission means may include a pedal 15 and a motor 14.
`Here, the pedal 15 is rotated when a rider applies. forces
`and transmits the rotation farce to the chain 16. Further,
`the motor 14 is connected to.a powering unit 130.and the
`shaft of the motor 14 is rotated upon being powered so
`as to transmit the rotation force to the chain 16. Here,
`when a rider applies force. to the pedal 15. so that the
`electric bicycle 10 travels, the motor 14 assists the rider’s
`pedal-powerso that the rider may easily go up.a hill and
`the like even if she or he pedals with less force.
`[0034] The specific configuration to transmit the reta-
`tion farce by the pedal 15: or the motor 14 to the chain 16
`is weil known in the art, and therefore descriptions ther-
`eon will not be made herein:
`
`[0035] The gradient sensing unit 140. sensés the gra-
`dient ofthe electric bicycle 10 so as to transmit the sensed
`value, ie., a gradient value of the bicycle to the motor
`drive control unit 120.
`
`[0036] The bicycle acceleration sensing unit 150.sens-
`es the acceleration cf the electric bicycle 10 so as to
`transmit the sensed value, i.e., an acceleration value of
`
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`the bicycle to the motor drive. control unit 120.
`[9037]
`Inaddition, the.motor control system for anelec-
`tric bicycle according to a preferred embadiment of the
`presentinvention may further include a three-axis accel-
`eration sensor to sense the gradient and acceleration of
`the electric. bicycle 10 and transmit the sensed value to
`the gradient sensing unit 140.and the bicycle acceleration
`sensing unit 150.
`[0038] Here, the three-axis acceleration sensor meas-
`ures accelerations on x-, y-, and z- axes, fa sense the
`gradient and the acceleration of the bicycle.
`[0039] The pedal acceleration sensing unit 160 senses
`the acceleration of the pedal 15 so as to transmit the
`sensed value, i.e., an acceleration value of the pedal to
`the motor drive contro! unit. 120.
`[0040]
`In addition, the motor control system for an elec-
`tric bicycle according to a preferred embediment may
`further include a pedal velocity sensor to sense the ve-
`locity of the pedal 15. The pedal acceleration sensing
`unit 160 may obtain a pedal acceleration value by differ-
`entiating the pedal velocity value transmitted from the
`pedal velocity sensor. Here, the pedal velocity sensor
`may be provided, for example, at the frame of the electric
`bicycle 10 to count the retations of the rotation shaft of
`the pedal 15.
`[0041] The motor drive control unit 4120 may. receive
`the sensed values from the gradient sensing unit 140,
`the. bicycle acceleration sensing unit 150, and the pedal
`acceleration sensing unit 160 te estimate pedal torque,
`thereby controlling the driving of the motor 14. Here, the
`motor-drive control unit 120 may control the diving of the
`motor 14 by turning on/off application of electricity to the
`motor 14 from the powering unit 130. The pawering. unit
`may be a battery, for example.
`[0042]
`In addition, the motor drive control unit 120 may
`control the driving of the motor 14 by comparing the es-
`timated pedal torque value with a motor assist setting
`value stored ina memory unit (not shown). Although the
`memory unit may be included in the motor drive control
`unit 120, the present invention is. not limited thereto. For
`example, the memary unit may be provided separately
`from the motor drive control unit 120 and may be electri-
`cally connected thereto.
`[0043] According to the motor control systern for an
`electric bicycle according to the preferred embodiment
`of the present invention, the moter drive control unit 120
`may estimate pedal torque based on the sensed values
`from thé gradient sensing unit 140, the bicycle acceler-
`ation sensing unit 150, and the pedal acceleration sens-
`ing unit 160 so as to: control the driving of the motor 14,
`thereby adjusting the ratio of motor assist. By doing so,
`torque may. be calculated without using a costly torque
`sensor, so that manufacturing cost can be saved and the
`weight of the bicycle can be reduced. In addition, ride
`comfort can be improved.
`1 and 2, a method of con-
`[0044] Referring to FIGS.
`trolling a motor for an electric bicycle according to a pre-
`ferred embodiment of the present invention includes
`
`sensing the gradient of a bicycle, the accelerationof the
`bicycle, and the acceleration of a pedal, and controlling
`the driving of the motor 14.
`[0045] Hereinafter, the method of controlling a motor
`for an electric bicycle according to a preferred embodi-
`ment of the present invention will be described in more
`detail with reference to FIGS. 1 and 2.
`
`[0046] Referring to FIG. 2, the sensing includes sens-
`ing the gradient of the electric bicycle: 10 by the gradient
`sensing unit 140, sensing the acceleration of the electric
`bicycle 10 by the bicycle acceleration sensing unit 150,
`and sensing the acceleration of the pedal 15 of the elec-
`tric bicycle 70 by the pedal acceleration sensing unit 160.
`[0047] The gradient sensing unit 140 senses the gra-
`dient of the electric bicycle 10 so.as to transmit the sensed
`value,
`iLe., a gradient value of the bicycle te the motor
`drive contra! unit 120.
`
`[0048] The bicycle acceleration sensing unit 150 sens-
`es the acceleration of the electric bicycle 10 so as to
`transmit the sensed value, i.e., an acceleration value of
`the bicycle to the motor drive control unit 120. Here, the
`gradient sensing unit 140 and the bicycle acceleration
`sensing unit 150 may sense the gradient of the bicycle
`and the acceleration of the bicycle via a three-axis ac-
`celeration sensor. Here, the three-axis acceleration sen-
`sor measures. accelerations on x-, y-, and z- axes,
`to
`sense the gradient and the acceleration of the electric
`bicycle 70.
`[0049] The pedal acceleration sensing unit 160. senses
`the acceleration of the pedal 15 so as to transmit the
`sensed value, i.e., an acceleration value of the pedal to
`the motordrive control unit #20. The pedal acceleration
`sensing unit 160 may obtain a pedal acceleration vaiue
`by differentiating the pedal velocity value transmitted
`from the pedal velocity sensor. Here, the pedal velocity
`sensor may. be provided, for example, on one side of the
`frame of the electric bicycle 10 to count the rotations of
`the rotation shaft the pedal 15.
`[0050] The controlling includes receiving. by the motor
`drive control unit 120, the sensed values fram the gradi-
`ent sensing unit 140,
`the. bicycle acceleration sensing
`unit 150, and the pedal acceleration’sensing unit 160 to
`estimate pedal torque, thereby controlling the driving of
`the motor 14, Here, the motor-drive control unit 120. may
`control the diving of the motor 14 by turning on/off apply-
`ing electricity to the motor 14 from the powering unit. 130.
`The powering unit 130. may be a battery, for example.
`[0051]
`In addition, the motor drive control unit 120:may
`conirol the driving of the motor 14 by comparing the.es-
`timated pedal torque value with a motor assist setting
`value stored ina memory. Although the memory unit may
`be included in the motordrive control unit 120, the present
`invention is netlimited thereto. For example, the memory
`unit may be provided separately from the motor drive
`control unit 120 and may be electrically connected there-
`to.
`
`[0052] According to the method of controlling a motor
`for an electric bicycle according to the preferred embad-
`
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`iment. of the present invention, pedal torque may be es-
`timated by the motor drive. cantrol unit 120 based on the
`sensed values: from the gradient sensing unit 140, the
`bicycle acceleration sensing unit.150, and the pedal.ac-
`celeration sensing unit 160 so as to control the driving of
`the motor 14, thereby adjusting the motor assist. Accord-
`ingly, ride comfort can be improved. Further, torque may
`be calculated without using a costly torque sensor, so
`that manufacturing cost can be saved and the weight of
`the bicycle can be reduced.
`[0053] Asset forth above, according to. preferred em-
`bodiments of the present invention, driving of a motoris
`controlled by sensing the gradient of a bicycle, the ac-
`celeration of the bicycle, and the acceleration of a pedal
`sa as to estimate pedal torque, such that torque can be
`calculated without using a costly torque sensor.
`[0054] Accordingly, costcan be significantly saved, the
`space occupied by. a torque sensor can be reduced. Fur-
`ther, the weight of an electric bicycle can be reduced,
`and less electricity is used for driving a motor, battery
`use time. for driving the motor can be extended.
`[9055] Additionally, ride comfort can be improved by
`cantrolling driving of a moter by calculating torque.
`[9056] Although the embodiments of the present in-
`vention have been disclosedforillustrative purposes, it
`will be appreciated thatthe present invention is notlimited
`thereto, and those skilled in the art will appreciate that
`various modifications, additions and substitutions are
`possible, without departing from the scope and spirit of
`the invention.
`
`[0057] Accordingly, any and all modifications, varia-
`tians or equivalent arrangements should be considered
`to be within the scope of the invention, and the detailed
`scope of the inventionwill be disclosed by the accompa-
`nying claims.
`
`Claims
`
`1. A motor control system for an electric. bicycle, the
`system comprising:
`
`a gradient sensing unit sensing a gradient of a
`bicycle;
`a bicycle acceleration sensing unit sensing an
`acceleration of the bicycle;
`a pedal acceleration sensing unit sensing an ac-
`céleration of a pedal: and
`a motor drive control unit to control driving of a
`moter,
`wherein the motor drive control unit receives
`
`sensed values. from the gradient sensing unit,
`the bicycle acceleration sensing unit, and the
`pedal acceleration sensing unitsoastoestimate
`pedal torque, thereby controlling driving of the
`motor.
`
`2. Themoter control system as set forth in claim 1, fur-
`
`ther comprising a three-axis acceleration sensor,
`wherein the gradient sensing unit and the bicycle
`acceleration sensing unit sense the gradient of the
`bicycle and the acceleration of the bicycle, respec-
`tively, using the three-axis acceleration sensor.
`
`The motor control system as set forth in claim 1, fur-
`ther comprising a pedal velocity sensorsensing ped-
`al velocity,
`wherein the pedal acceleration sensing unit senses
`a pedal acceleration value by differentiating a pedal
`velocity value received from the pedal velocity sen-
`sor.
`
`The motor control system as set forth in claim 3,
`wherein the pedal velacity sensor counts the rota-
`tions of a rotation shaft of the pedal.
`
`The motor control system as set forth in claim 1, fur-
`ther comprising a memory. unit in which a motor as-
`sist setting value according to pedal torqueis stored,
`value stored in the memory unit so as to control driv-
`ing of the motor.
`
`A method of controlling a motor contro! system for
`an electric bicycle, the method comprising:
`
`sensing a gradient of a bicycle by a gradient
`sensing unit, an acceleration of the bicycle bya
`bicycle acceleration sensing unit, and an accel-
`eration of a pedal by a pedal acceleration sens-
`ing unit; and
`controlling, by a motor drive control unit, driving
`of .a motor by receiving the sensed values from
`the gradient sensing unit, the bicycle accelera-
`tion sensing unit, and the pedal acceleration
`sensing unit to estimate pedal torque.
`
`The method as set forth in claim 6, wherein the sens-
`ing includes sensing the gradient of the bicycie and
`the acceleration of the bicycle by the gradient sens-
`ing unit and the bicycle acceleration sensing unit,
`respectively, using a three-axis acceleration sensor.
`
`The method as set forth in claim 6, wherein the sens-
`ing includes. obtaining, by the pedal acceleration
`sensing unit, a pedal acceleration by differentiating
`a pedal velocity value received from a pedal velocity
`sensor to sense a pedal velocity.
`
`The method as set forth in claim 8, wherein the pedal
`velocity sensor counts the rotations of a rotation shaft
`of the pedal.
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`10.
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`The method. as set forth in claim 6, wherein the con-
`trolling includes comparing, by the motor drive con-
`tro! unit, the estimated pedal torque with the motor
`assist setting value stored in a memory unit so.as to
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`control driving of the motor.
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`EP 2 826 700 A1
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`FIG.1
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`EP 2 826 700 A1
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`FIG.2
`
`POWER ING
`UNIT
`
`
`
`130
`
`
`
`
`CRAT TERN
`AUIAS YEA Daly 8
`‘
`140~~
`SENSING UNIT
`
`
` ACCELERATION—|
`
`f
`
`SENSING UNIT
`
`
`PEDAL ACCELERATION |
`
` 160~7
`
`SENSING UNIT
`|
`
`MOTOR DRIVE
`CONTRIL UNIT
`
`
`
`MOTOR
`
`
`
`
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`EP 2 826 700 A1
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`
`
`Europdisches
`Patentamt
`Evropean.pean
`PatentOffice
`Office européen
`des brevets
`
`EUROPEAN SEARCH REPORT
`
`Application Number
`
`EP 14 17 5757
`
`DOCUMENTS CONSIDERED TO BE RELEVANT
`Citation of decument with indication, where. appropriate,
`of relevant passages.
`
`Relevant
`to claim
`
`CLASSIFICATION OF THE
`APPLICATION (IPC)
`
`document
`
`
`INV.
`B62M6/45
`
`JP Hil 334677 A (SONY CORP)
`7 December 1999 (1999-12-07)
`* abstract *; figures 1,5 *
`
`(BOSCH GMBH ROBERT [DE];
`WO 2010/094515. Al
`MALLEBREIN GEORG [DE] }
`26 August 2010 (2010-08-26)
`* abstract * *
`
`(SONY CORP [JP]}
`EP @ 846 614 Al
`10 June 1998 (1998-06-10)
`* abstract *; figure 3 *
`
`(CUNNINGHAM GLEN B [US])]1
`US 2007 /068273 Al
`29 March 2007 (2007-03-29)
`* paragraph [0004]
`- paragraph [9008] *
`
`US 2006/095191 Al {LIN CHIU-FENG [TW])}
`4 May 2006 (2006-05-04)
`* the whole document *
`
`JP 2008 162374 A (BRIDGESTONE CORP)
`17 July 2008 (2008-07-17)
`* abstract * *
`
`TECHNICAL FIELDS.
`SEARCHED
`aPC)
`
`The present search report has been-drawn up for all claims
`Place of search
`Date. of completion of the search
`
`|
`
`Evaminer
`
`The Hague
`OATEGORY OF CITED DOCUMENTS
`
`X: particularly relevantif taken alone
`Y; particularly relevantif combined with another.
`document of the same category
`A: technological background
`©: nen-wiitten disclosure
`P: intermediate document
`
`6 November 2014
`Denicolai, Giovanni
`T «theory or principle-underlying. the invention
`& earlier patent document, but published.on, or
`after the filing date
`D : documentcited in the application
`L.edocument sited for other reasons
`
`& : member-of the same patent family, carrésponding
`
`iE
`
`
`
`
`
`POFORM160303.82(P04C07}
`
`10
`
`18
`
`20
`
`25
`
`30
`
`35,
`
`40
`
`45
`
`56
`
`55
`
`

`

`EP 2 826 700 A1
`
`ANNEX TO THE EUROPEAN SEARCH REPORT
`ON EUROPEAN PATENTAPPLICATION NO,
`
`EP 14 17 5757
`
`This annexlists: the patent farnily members relating to the patent documents cited in the above-mentioned European search report.
`The members are as contained in the: European Patent Office EDP file.on
`The European Patent Office is in no wayliable for these particulars which are merely given for the purpose of information.
`96-11-2014
`
`eited in search report
`
`date
`
`member(s}
`
`date
`
`JP H11334677
`
`A
`
`Q7-12-1999
`
`NONE
`
`DE. 102009000919
`2010094515
`
`04-05-2006
`
`19-08-2010
`26-08-2010
`
`02-05-2002
`21-11-2002
`06-05-2004
`03-03-2005
`10-@6-1998
`02-02-2000
`16-08-2005
`10-02-1998
`21-12-2001
`19-06-2001
`13+03-2003
`04-12-1997
`
`26-08-2009
`16-08-2013
`21-63-2013
`12-63-2009
`23-66-2008
`01-04-2013
`29-03-2007
`16-08-2007
`
`61-09-2006
`
`10
`
`18
`
`20
`
`25
`
`30
`
`35,
`
`40
`
`45
`
`56
`
`55
`
`EPOFORMPOd59
`
`EP 0846614
`
`Al
`
`I@-06-1998
`
`DE
`
`US 2007668273
`
`Al
`
`29-83-2007
`
`JP
`KR
`TW
`
`69711342
`69711342
`69728437
`69728437
`0846614
`0976649
`3682590
`H1035576
`470037
`6247548
`2003047369
`9745316
`
`101517353
`2418850
`5167134
`2009509830
`20080056728
`1391281
`2007068273
`2007186669
`
`1261181
`2006995191
`
`For mare details about this annex :.see Official Journal of the European Patent Office, Na: 12/82
`
`10.
`
`

`

`REFERENCES CITED IN THE DESCRIPTION
`
`EP 2 826 700 A1
`
`This list of references cited by the applicant is for the reader’s convenience only. lt does not form part of the European
`patent document. Even though great care has been taken:in compiling the.references, errors or omissions cannot be
`excluded and the EPO disclaimsail liability in this regard.
`
`Patent documents cited in the description
`
`«
`
`KR 1020130083742 [0001]
`
`e
`
`KR 20120132593 [0015]
`
`11
`
`