WO2001080416A1 - Controleur de moteur - Google Patents
Controleur de moteur Download PDFInfo
- Publication number
- WO2001080416A1 WO2001080416A1 PCT/JP2001/003326 JP0103326W WO0180416A1 WO 2001080416 A1 WO2001080416 A1 WO 2001080416A1 JP 0103326 W JP0103326 W JP 0103326W WO 0180416 A1 WO0180416 A1 WO 0180416A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive signal
- drive
- current
- motor
- offset amount
- Prior art date
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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
-
- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
-
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/12—Monitoring commutation; Providing indication of commutation failure
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
Definitions
- the present invention relates to a device for controlling a drive current of a motor, and more particularly, to a device for correcting an offset of a drive current.
- a motor control device disclosed in Japanese Patent Application Laid-Open No. Hei 8-149882 is known.
- the output current value of the current detector when the drive current is not supplied to the motor, that is, when the motor is stopped, is detected as an offset amount, and the drive current is corrected by the offset amount.
- the duty ratio of the drive signal may deviate due to a detection error of the angle sensor, and the drive current may be offset.
- This offset will be described with reference to FIG. Fig. 6 (a) shows an example of the output characteristics of the angle sensor.
- the horizontal axis represents the actual rotor rotation angle 0r (hereinafter referred to as the actual rotation angle 0r), and the vertical axis represents the loader rotation angle detected by the angle sensor. Take 0 (hereinafter referred to as detection angle 0).
- FIGS. 6 (b) and (c) show the detection angle 0 of the angle sensor having the output characteristics of FIG. 6 (a).
- Fig. 6 (c) shows the case where the drive signal is a PWM voltage waveform.
- the upper row shows the target value Sr of the drive signal
- the lower row shows the actual drive signal S u, where the high level side is Hi and the low level side is Lo. If there is an error in the detection angle 0 of the angle sensor, the duty ratio of the drive signal Su generated based on this error is shifted from the target value Sr.
- Such a drive current offset due to a detection error of the angle sensor is a drive current offset when the motor is rotating, and is disclosed in Japanese Patent Laid-Open No. 8-1.49882.
- Such an offset amount calculated with the motor stopped may not be able to correct this, and may result in a decrease in the motor torque and an increase in the vibration noise. Disclosure of the invention
- a motor control device includes: a drive signal generation unit that generates a drive signal for a motor; and a current supply unit that supplies a drive with a drive current corresponding to the drive signal.
- a current detection unit that detects a current value of a drive current of the motor; an offset amount calculation unit that calculates an offset amount of the drive current based on a current value detected when the motor is driven; And a drive signal correction unit that corrects the drive signal based on the drive amount.
- the drive current generated by the motor drive for example, the offset of the drive current caused by an angle sensor error, etc. The offset can be corrected more accurately.
- the drive signal generation unit generates a drive signal as a rectangular wave signal
- the drive signal correction unit generates the square wave signal based on the calculated offset amount. It is preferable to correct the duty ratio of the signal. In a motor in which the drive signal is a rectangular wave signal, by correcting the duty ratio of the rectangular wave signal, The drive current can be easily corrected.
- the drive signal generation unit generates a drive signal based on a voltage command value
- the drive signal correction unit controls the voltage command based on the calculated offset amount.
- the values are corrected.
- the drive current can be easily corrected by correcting the voltage command value.
- the offset amount calculating section calculates the offset amount based on a current value for one cycle of the driving current. This makes it possible to quickly and easily detect the offset amount and correct the drive current.
- the offset amount calculation unit includes a low-pass filter, It is preferable to calculate the offset amount by applying a low-pass filter to the current value of the current. This makes it possible to detect the amount of age set with a simple configuration.
- FIG. 1 is a schematic configuration diagram of a motor control device according to a first embodiment of the present invention.
- FIG. 2 is an explanatory diagram illustrating calculation of the amount of offset in the motor control device according to the first embodiment of the present invention.
- FIG. 3 is an explanatory diagram showing correction of a drive signal in the motor control device according to the first embodiment of the present invention.
- FIG. 4 is a schematic configuration diagram of a motor control device according to a second embodiment of the present invention.
- FIG. 5 is an explanatory diagram showing generation of a voltage command value and correction of the voltage command value in the motor control device according to the second embodiment of the present invention.
- FIG. 6 is a configuration diagram of a control device according to the present embodiment
- FIG. 2 is a waveform of a drive signal and a drive current of each phase of a motor
- FIG. 3 is an explanatory diagram of correction of the drive signal according to the present embodiment.
- the motor 20 is a polyphase, for example, a three-phase AC motor, and is driven by a drive current supplied to each phase (U-phase, V-phase, W-phase) of the motor 20 from, for example, an inverter. Is done.
- Current supply unit 12 For example, the inverter converts the current from the power supply unit 11 into a polyphase alternating current based on the drive signals (Su, Sv, Sw) for each phase, and Generate
- the control device 10 according to the present embodiment generates the drive signal as a rectangular wave voltage waveform that switches the level based on the rotation angle of the rotor detected by the angle sensor 21 such as a resolver (hereinafter, referred to as a detection angle).
- the motor control device 10 includes a power supply unit 11, an inverter 12, a drive current detection unit 13, an offset amount calculation unit 14, a correction amount calculation unit 15, a voltage phase controller 16 and a drive signal generation. And a drive signal correction unit 18.
- the voltage phase controller 16 receives a torque command value from an external control device, and determines the voltage phase ⁇ of each phase according to the torque command value.
- the drive signal correction unit 18 corrects the drive signals (Su, Svo, Swo) to drive signals (Su, SV, Sw), respectively. This correction will be described later.
- the drive current detection section 13 detects the drive current value (Iu, IV, Iw) of each phase supplied from the current supply section 12 to the motor 20.
- the offset amount calculation unit 14 calculates the drive current (Iu, Iv, Iw) of each phase when the motor is driven by the drive current detection unit 13 and the detection angle 0 based on the drive current ( The offset amount of I u, I v, I w) is calculated as, for example, the average value of one period of the drive current (I u, I v, I w).
- Figure 2 shows an example. In Fig.
- the detection angle ⁇ the drive signal for each phase (U-phase, V-phase, and W-phase drive current command values S u, S v, and S w from the top), and the drive current (I u, IV, I w).
- the motor The drive current value (Iu, Iv, Iw) of each phase is sampled for one cycle at a timing obtained by dividing one cycle T of the rotation into a plurality at equal intervals, and the drive current values (Iu, I
- the offset value is calculated as the average value of v, I w). That is, assuming that the offset amounts of the drive current values (Iu, Iv, Iw) in the U, V, and W phases are Iuofs and Ivofs s Iwofs, respectively.
- Iuofs (Iu (1) + Iu (2) +-.-+ Iu (n)) / n
- Ivofs (Iv (1) + Iv (2) + ⁇ ⁇ -+ Iv (n)) / n
- Iwofs (Iw (1) + Iw (2) +-'-+ Iw (n)) / n
- n the number of divisions obtained by dividing the period T at equal intervals
- the correction for the drive signal is performed as the correction of the phase of the drive signal as described later.
- the correction amount calculation unit 15 calculates a phase correction amount ( ⁇ 0 ⁇ , ⁇ 0 ⁇ ) as a correction amount for the drive signal of each phase based on the offset amount (Iuofs, Ivofs, Iwofs) calculated by the offset amount calculation unit 14. , ⁇ ).
- the correction amount calculation unit 15 includes a ⁇ ⁇ arithmetic unit, and calculates a phase correction amount ( ⁇ 0 u, ⁇ ⁇ ⁇ 0w) for each phase by the following equation.
- the proportional gain Ksp and the integral gain Ksi are predetermined values for each control device, and are stored in advance in, for example, a storage unit (not shown).
- the drive signal correction section 18 corrects the drive signal (S uo, S vo, S wo) based on the correction amounts ( ⁇ 0 u, ⁇ 0 V, ⁇ 0 w) calculated by the correction amount calculation section 15.
- the duty ratio of the drive signal (Suo, Svo, Swo) output from the drive signal generation unit 17 as a rectangular wave is corrected by the phase.
- Figure 3 shows an example of this. In this figure, the broken line indicates the waveform of the U-phase drive signal S uo before correction.
- the solid line shows the waveform of the corrected U-phase drive signal Su.
- the duty ratio is increased as shown in Fig. 3 (a). More specifically, the rise and fall of the rectangular wave of the drive signal S uo are shifted in the direction of widening by u, respectively, by the correction amount ⁇ calculated by the correction amount calculation unit 15.
- the duty ratio is large, the drive current becomes high, that is, the drive current shifts to the positive side, whereby the offset can be corrected.
- the duty ratio is reduced as shown in FIG. More specifically, the rise and fall of the rectangular wave of the drive signal Soo are shifted in the direction of narrowing by u each by the correction amount u calculated by the correction amount calculation unit 15.
- the duty ratio is small, the driving current becomes low, that is, the driving current shifts to the negative side, so that the offset can be corrected.
- the drive signal Soo as a duty ratio correction based on the phase, it is possible to easily and accurately perform the offset correction of the drive current. This correction can be made in the same manner in other phases.
- FIG. 4 is a configuration diagram of a control device according to the present embodiment
- FIG. 5 is an explanatory diagram of correction of a drive signal according to the present embodiment.
- the motor 20 is a polyphase, for example, a three-phase AC motor, and is driven by a drive current supplied from the current supply unit 32 to each phase (U-phase, V-phase, and W-phase) of the motor 20. Is done.
- the current supply unit 32 for example, the inverter converts the current from the power supply unit 31 into a polyphase alternating current based on the drive signals (S u, SV, Sw) for each phase to drive the motor 20
- the control device generates a drive signal as a PWM voltage waveform according to the rotation angle (detection angle) 0 of the rotor detected by the angle sensor 21.
- the motor control device 30 includes a power supply unit 31, a current supply unit 32, a drive current detection unit 33, an offset amount calculation unit 34, a correction amount calculation unit 35, a voltage command value generation unit 36, and a drive. It comprises a signal generator 37 and a drive signal corrector 3 &.
- the voltage command value generation unit 36 receives a torque command value from an external control device, and in response to the torque command value, generates a voltage command value (V uo, Vvo) from which a drive signal (Su, SV, Sw) is generated. , Vwo).
- the drive signal correction unit 38 corrects these voltage command values (Vuo, Vvo, Vwo) to voltage command values (Vu, VV, Vw).
- Driving signal generation unit 37 For example, the PWM circuit converts the voltage command value corrected by the driving signal correction unit 38
- the drive current detection unit 33 detects a drive current value (Iu, Iv, Iw) of each phase supplied from the current supply unit 32 to the motor 20.
- the offset amount calculation unit 34 calculates the drive current (Iu, Iv, Iw) based on the drive current value (Iu, Iv, Iw) of each phase when driving the motor detected by the drive current detection unit 33. Calculate the offset amount of.
- the offset amount calculation unit 34 includes, for example, a low-pass filter,
- the correction amount calculation unit 35 calculates the correction amount of the voltage command value (Vuo, Vvo, Vwo) of each phase based on the offset amount calculated by the offset amount calculation unit 34, and the drive signal correction unit 38 Correct the voltage command value (Vuo, Vvo, Vwo) based on the amount.
- this correction is performed as a correction of the level of the voltage command value (Vuo, Vvo, Vwo) that is the basis of the drive signal (Su, SV, Sw) by PWM.
- 5 (a) shows the voltage command values (Vu, Vuo1, Vuo2) and the triangular wave Tw in the drive signal generation unit 37, for example, a PWM circuit, and FIG.
- the drive signal generator 37 includes a comparator and calculates a drive signal (Su, Sv, Sw) based on a comparison between the voltage command values (Vu, Vv, Vw) and the triangular wave Tw.
- the drive signal generator 37 outputs the drive signal (Su, Sv, Sw) and the voltage command value (Vu, Vv, Vw) Generated as a rectangular wave voltage waveform with a high voltage value Hi when the angle wave is larger than Tw and a low voltage value Lo when the voltage command value (Vu, Vv, Vw) is lower than the triangular wave Tw. I do.
- drive signals S uo 1 and S uo 2 are generated for voltage command values V uo 1 and Vuo 2, respectively.
- the correction amount calculation unit 35 calculates a correction amount for the voltage command value of each phase based on the offset amount calculated by the offset amount calculation unit 14.
- the correction for the voltage command value is performed as the correction of the voltage value of the voltage command value, as described later. Therefore, the correction amount calculation unit 35 calculates the voltage correction amount (AVu, ⁇ VV, AVw). I do.
- the correction amount calculating unit 35 includes a ⁇ I calculator, and calculates a voltage correction amount ( ⁇ Vu, ⁇ V V, AVw) for each phase by the following equation:
- the proportional gain Kvp and the integral gain KVi are predetermined values for each control device, and are stored in advance in, for example, a storage unit (not shown).
- the drive signal correction unit 38 calculates the correction amount ( ⁇ V u, ⁇ V V,
- the voltage command value (Vuo, VVo, Vwo) is corrected to the voltage command value (Vu, Vv, Vw) based on ⁇ Vw). If the calculated offset amount (luofs, Ivofs, Iwofs) of the drive current (Iu, Iv, Iw) is a positive value, for example, as shown in FIG. 5 (a), the U-phase voltage command value Vuo 1 If the offset amount Iuofs of the U-phase drive current Iu calculated by the above is a positive value, it is corrected to the voltage command value Vu which is lower than the voltage command value Vuo 1 by the offset amount AVu. You. According to this correction, as shown in FIG. 5 (b), the drive signal S uo is corrected to a drive signal S u having a low duty ratio. When the duty ratio is small, the driving current becomes low, that is, the driving current shifts to the negative side, whereby the offset can be corrected.
- the U-phase The offset amount luofs of the U-phase drive current I u calculated by the voltage command value Vuo 2 is negative.
- the voltage command value Vuo2 is corrected to the voltage command value Vu that is raised in level by the offset amount AVu.
- the drive signal S uo is corrected to a drive signal S u having a high duty ratio, as shown in FIG.
- the duty ratio is large, the driving current becomes high, that is, the driving current shifts to the positive side, so that the offset can be corrected.
- the offset of the drive current can be corrected easily and accurately. be able to.
- the present invention by correcting the drive current based on the drive current at the time of driving the motor, it is also possible to correct the offset of the drive current generated by driving the motor. For this reason, a decrease in motor torque and an increase in vibration noise can be further suppressed.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60140443T DE60140443D1 (de) | 2000-04-18 | 2001-04-18 | Motorsteuerung |
US10/239,789 US7772797B2 (en) | 2000-04-18 | 2001-04-18 | Motor controller |
EP01921888A EP1283594B1 (en) | 2000-04-18 | 2001-04-18 | Motor controller |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-116657 | 2000-04-18 | ||
JP2000116657A JP4575547B2 (ja) | 2000-04-18 | 2000-04-18 | モータの制御装置 |
Publications (1)
Publication Number | Publication Date |
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WO2001080416A1 true WO2001080416A1 (fr) | 2001-10-25 |
Family
ID=18628093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/003326 WO2001080416A1 (fr) | 2000-04-18 | 2001-04-18 | Controleur de moteur |
Country Status (5)
Country | Link |
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US (1) | US7772797B2 (ja) |
EP (1) | EP1283594B1 (ja) |
JP (1) | JP4575547B2 (ja) |
DE (1) | DE60140443D1 (ja) |
WO (1) | WO2001080416A1 (ja) |
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JP2008167655A (ja) * | 2001-08-27 | 2008-07-17 | Shinko Electric Co Ltd | インバータ試験装置 |
JP4134716B2 (ja) * | 2002-12-24 | 2008-08-20 | 日産自動車株式会社 | 電動機の電流制御装置 |
WO2004062079A1 (ja) * | 2002-12-26 | 2004-07-22 | Zexel Valeo Climate Control Corporation | モータ制御装置 |
JP4539192B2 (ja) * | 2004-06-23 | 2010-09-08 | 日産自動車株式会社 | 交流電動機の制御装置 |
JP4716680B2 (ja) * | 2004-06-29 | 2011-07-06 | 東洋電機製造株式会社 | 永久磁石型同期電動機の制御装置 |
JP2006074951A (ja) * | 2004-09-06 | 2006-03-16 | Nissan Motor Co Ltd | 交流電動機の制御装置 |
JP4782525B2 (ja) * | 2005-09-30 | 2011-09-28 | 日本電産サーボ株式会社 | ステッピングモータの駆動装置 |
JP4688172B2 (ja) * | 2007-07-30 | 2011-05-25 | 本田技研工業株式会社 | 電動機の制御装置 |
JP4329855B2 (ja) | 2007-10-09 | 2009-09-09 | トヨタ自動車株式会社 | 交流モータの制御装置および交流モータの制御方法 |
JP4301341B2 (ja) * | 2007-11-16 | 2009-07-22 | ダイキン工業株式会社 | モータ電流算出装置ならびに空気調和装置 |
US8093914B2 (en) * | 2007-12-14 | 2012-01-10 | Cypress Semiconductor Corporation | Compensation circuit for a TX-RX capacitive sensor |
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JP5521368B2 (ja) * | 2009-03-23 | 2014-06-11 | シンフォニアテクノロジー株式会社 | モータ回転制御システム |
JP5866764B2 (ja) * | 2011-02-04 | 2016-02-17 | ダイキン工業株式会社 | 電力変換装置 |
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US9172318B2 (en) * | 2013-03-05 | 2015-10-27 | Steering Solutions Ip Holding Corporation | Method and system to compensate for dynamic DC offset of measured phase current |
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Also Published As
Publication number | Publication date |
---|---|
DE60140443D1 (de) | 2009-12-24 |
JP4575547B2 (ja) | 2010-11-04 |
EP1283594A1 (en) | 2003-02-12 |
JP2001298992A (ja) | 2001-10-26 |
US7772797B2 (en) | 2010-08-10 |
EP1283594B1 (en) | 2009-11-11 |
EP1283594A4 (en) | 2007-08-15 |
US20030102884A1 (en) | 2003-06-05 |
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