EP1779504A1 - Anordnung zum antrieb eines lastelementes - Google Patents
Anordnung zum antrieb eines lastelementesInfo
- Publication number
- EP1779504A1 EP1779504A1 EP05784885A EP05784885A EP1779504A1 EP 1779504 A1 EP1779504 A1 EP 1779504A1 EP 05784885 A EP05784885 A EP 05784885A EP 05784885 A EP05784885 A EP 05784885A EP 1779504 A1 EP1779504 A1 EP 1779504A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- load
- motor
- drive
- torque
- change
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
- G03G15/167—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J23/00—Power drives for actions or mechanisms
- B41J23/02—Mechanical power drives
Definitions
- the load angle of the drive motor for the transfer belt also changes, as a result of which it follows its setpoint position (target position: position at which the transfer belt would be if the recording medium was in contact not swiveled to the transfer belt).
- target position position at which the transfer belt would be if the recording medium was in contact not swiveled to the transfer belt.
- the offset can be approx. 100 ⁇ m
- the drive torque can change from 1 Nm to 5 Nm.
- the transfer belt When the transfer belt is swiveled away from the recording medium, the force transferred between the recording medium and the transfer belt is abruptly reduced. As a result, the drive torque for the transfer belt suddenly changes, as a result of which the transfer belt again runs at the original load angle and, secondly, the transfer belt is set in vibration. Both effects cause a shift of the color separations.
- the amplitude of the oscillation can be approx. +/- 100 ⁇ m.
- the problem to be solved by the invention is to specify an arrangement in which the load angle of the drive motor is kept constant despite changing the driven load.
- the measuring device may be a torque sensor which measures the load moments caused on the drive shaft by the load element as measured values. From the measured load torque Without load change (setpoint) and the load torque at load change (torque deviation), the load angle change can be determined.
- an auxiliary motor can be used, which generates the additional torque, by which the torque deviation caused by the change of the load is compensated.
- _A1s zus_atzmotor a brushless DC motor or a servomotor can be provided.
- the additional motor generates a constant basic torque and a variable moment, which results from the load change on the load element.
- the drive motor only has to apply the drive speed and a small constant residual torque.
- the size of the additional torque to be applied by the additional motor is determined via the torque sensor. Depending on the installation location of the torque sensor of the additional motor is controlled or ge controls.
- the advantages of the arrangement with additional motor can be seen in the following:
- the drive motor determines the speed of the load element and contributes to the drive torque only a small part, which is constant. As a result, the speed fluctuations are kept extremely small, since the drive motor is not influenced by a load change. Since the invention does not wait until a change in torque results in a measurable change in position of the load element, the invention operates with a shorter reaction time. onszeit as a control that uses a position deviation signal as a measured variable.
- the drive motor e.g. a stepper motor
- the drive motor can be designed for smaller power, since the auxiliary motor applies most of the drive torque.
- the arrangement according to the invention can be realized in such a way
- the additional motor is arranged on the drive shaft in addition to the drive motor
- the torque sensor is arranged between the drive motor and the additional motor
- the arrangement according to the invention can also be constructed in such a way
- the arrangement according to the invention can furthermore be constructed in such a way that
- auxiliary motor is arranged on a further shaft around which the load element is deflected
- the moment influencing means may be a brake which exerts a braking torque on the drive shaft as a function of the torque deviation, by means of which the torque deviation is compensated.
- the brake may e.g. be an eddy current brake.
- the drive motor determines the speed of the Last ⁇ element and brings a constant torque. As a result, the speed fluctuations are kept extremely small because the drive motor feels no load change.
- a brake is cheaper than a motor, e.g. a DC motor.
- the arrangement according to the invention can be constructed in such a way when using a brake, that the brake is arranged on the drive shaft next to the drive motor,
- Brake controls so that the on the drive motor wir- kende load remains constant.
- the arrangement according to the invention can also be realized in such a way that the brake is arranged on the drive shaft adjacent to the drive motor,
- the brake can also be arranged on a further shaft, which deflects the load element.
- the load element may e.g. a belt which is driven by the An ⁇ drive motor and is um ⁇ deflected by another wave.
- the phase position of the driving magnetic field for the motor shaft of the stepping motor can be influenced to the position of the motor shaft so that the measured position of the motor shaft to the desired position of the motor shaft (position without load change) remains constant, even if the load on the engine changes.
- the characteristic of the moment-phase angle characteristic can be used to control the phase position of the magnetic field of the stepping motor.
- the actual deviation from the desired position can be used as an input variable for a controller with which the phase angle of the magnetic field to the motor shaft can be regulated.
- the stepper motor is not operated with a fixed drive frequency for the motor currents, but the drive frequency is adapted to the load.
- the measuring device can a
- the torque sensor on the drive shaft for the load element between stepper motor and load element can be arranged an ⁇ .
- the measuring device can be a rotary encoder that generates rotary encoder pulses as measured values as a function of the rotational movement of the drive shaft and supplies the means which determines the time between the rotary encoder pulses and compares this time with the time without load change and with the Comparison result controls the drive frequency of the stepper motor.
- the rotary encoder can be arranged on the drive shaft and the stepper motor between encoder and load element.
- the means may be a microprocessor programmed to operate as a PID controller. From the measured values, these clock signals are generated for the motor control, which as a result derives the drive pulses for the motor currents to be supplied to the stepper motor.
- the arrangement according to the invention can be used in an electrographic printing or copying device in which charge images of images to be printed are produced on an intermediate image carrier, which images are transferred to a transfer belt after development and then transferred to a recording medium.
- the auxiliary motor or the brake can then be arranged on the drive shaft for the transfer belt or on a shaft located on the transfer parts of the recording medium and transfer belt.
- Fig. 2 shows a second embodiment of the arrangement in which the means is an auxiliary motor which is controlled
- 3 shows a third exemplary embodiment of the arrangement in which the load element is a band and the means is a brake which is regulated; 4 shows a fourth exemplary embodiment of the arrangement in which the load element is a band and the means is a brake which is controlled; 5 shows a fifth exemplary embodiment of the arrangement in which the means is an additional motor or a brake, which is arranged and regulated on a deflection shaft for the belt;
- FIG. 3 shows a moment-phase angle characteristic of a stepper motor
- FIG. 7 shows a sixth embodiment of the arrangement in which a torque sensor is used as a measuring device and in which the phase angle of the stepping motor is controlled
- Fig. 8 shows a seventh embodiment of the arrangement in which a rotary encoder is used as a measuring device and in which the phase angle of the stepping motor is controlled
- FIG. 9 shows the motor current characteristic curve for a stepper motor
- FIG. 10 control pulses for the stepping motor and associated rotary encoder pulses with an unregulated stepper motor
- Fig. 11 shows the course of the temporal deviation of Anêt ⁇ impulses of the encoder pulses at unregulated stepping motor according to Fig 10 '.
- Fig. 12 is a block diagram of the arrangement.
- a first exemplary embodiment of the arrangement has a drive motor 1, a torque sensor 2, a controller 3 and an auxiliary motor 4.
- the drive motor 1 may be a stepping motor.
- the_J ⁇ r_eJiiii ⁇ me, nJis_eiiS- ⁇ r., 2_j £ .on be iib.1.1- chen structure and the controller 3 a PID controller.
- the An ⁇ drive motor 1 is arranged on a drive shaft 5 through which a load element 6 is driven.
- a transfer belt 7 of an electrographic printing or copying device has been used as an example of the load element 6.
- the auxiliary motor 4 e.g.
- a DC motor or a servomotor is located on the drive shaft 5, between the drive motor 1 and auxiliary motor 4, the torque sensor 2 is arranged.
- the torque sensor 2 outputs a torque signal proportional to the torque on the drive shaft 5, which is supplied to the controller 3 and is compared by this with a desired signal which is assigned to the torque without load change.
- the auxiliary motor 4 is controlled in such a way that it compensates for the load change, with the result that the load which must be applied by the drive motor 1 and thus the load angle of the drive motor 1 does not change.
- the aim of the construction is to keep constant the torque that the Antriebsmo ⁇ tor 1 must apply to drive the transfer belt 7. If this is the case, then it changes Load angle of the drive motor 1 not. The majority of the drive torque and drive torque fluctuations are therefore provided by the auxiliary motor 4.
- the drive motor 1 thus determines only the speed of the transfer belt 7 and contributes to the drive torque only a small part, but which is constant.
- the torque sensor 2 measures the torque that has to be applied by the drive motor 1.
- the controller 3 adjusts the operating voltage of the additional motor 4 so that the measured torque is maintained at a previously set torque (desired torque).
- the arrangement Since it is not until a torque change is integrated into a measurable change in position of the transfer belt 7, the arrangement operates with a shorter reaction time than a control which uses a position as a measured variable the drive motor 1 immRr_ is operated with the same load, the load angle also remains constant and since no load changes act on the drive motor 1, no oscillations of the transfer belt 7 are also excited.
- Fig. 2 shows a second embodiment of the invention, in which instead of a control, a controller 8 is used, the other units are used in accordance with Fig. 1 sets.
- a controller 8 instead of a control, a controller 8 is used, the other units are used in accordance with Fig. 1 sets.
- the drive motor 1 is in turn arranged on the drive shaft 5, by which the transfer belt 7 is also driven.
- the torque sensor 2 is located between the additional motor 4 and the transfer belt 7.
- the torque signal emitted by the torque sensor 2 is fed to the controller 8, which compares this signal with a desired signal and controls the auxiliary motor 4 as a function of the comparison in such a way that the load angle of the drive motor 1 remains constant.
- FIG. 2 Compared to FIG. 1, the arrangement of FIG. 2 operates according to the control principle.
- the controller 8 represents the operating voltage of the additional motor 4 so that the drive motor 1 only has to apply the previously set constant torque that the drive motor 1 to beitra ⁇ gene to drive. The remainder of the drive torque is provided by the additional motor 4.
- a controller is used instead of a control.
- the voltage-torque characteristic of the additional motor 4 must be known in order to keep the torque for the drive motor 1 constant, vibration problems that could be caused by an unfavorably set controller 3 are avoided.
- a brake 9 is used as the torque-influencing means, e.g. an eddy current brake.
- the brake 9 is on the
- the drive motor 1, the torque sensor 2 and a regulator 3 are provided.
- the brake 9 is located between the torque sensor 2 and the transfer belt 7 and is controlled by the controller 3, which receives the torque signal from the torque sensor 2 arranged between the drive motor 1 and the brake 9.
- the regulator compares the torque signal with a desired value and regulates the brake 9 such that the load angle of the drive motor 1 does not change.
- the controller 3 regulates the control voltage of the brake 9 so that the measured torque is maintained at the setpoint.
- the desired value is the maximum torque that occurs during operation of the transfer belt 7.
- the brake 9 is activated and a braking torque is applied to the drive shaft 5.
- the drive motor 1 must apply a greater torque in comparison to FIG. 1 or 2, which is braked down to the drive torque (corresponds to the desired value) of the transfer belt 7.
- Fig. 4 (fourth embodiment) differs from Fig. 3 only in that the controller 3 has been replaced by a controller 8, so the brake 9 between the drive motor 1 and torque sensor 2 is arranged.
- the aim of the structure according to FIG. 4, in turn, is to keep the torque, which the drive motor 1 must be able to apply for driving des._Ira.n ⁇ f. ⁇ xb_andg ⁇ s_JL despite load change, constant.
- the torque sensor 2 measures the torque which has to be applied for driving the transfer belt 7.
- the controller sets the control voltage of the
- a fifth embodiment of the invention is arranged on a deflection shaft 10 of the transfer belt 7, most conveniently on the deflection shaft, at which the largest momentary changes occur. In the case of a printer, this is the shaft of the transfer belt 7, on which the printing medium is transferred.
- the drive motor 1 and the torque sensor 2 remain on the drive shaft 5, furthermore a regulator 3 is provided.
- the arrangement according to FIG. 5 prevents the moment change from being caused by a swiveled-in recording medium to lead to a change in tension in the transfer belt 7, ie the stretching of the transfer belt 7 does not change as a result of the swiveling of the recording medium.
- the phase angle of the magnetic field driving the motor shaft of the stepping motor is influenced to the position of the motor shaft in a stepping motor to compensate for the load change and the consequent change in load angle.
- the aim of the invention is to respond to changes in Lastmo ⁇ ment so that there is no change in the Phasen ⁇ position of the motor shaft of the stepping motor to its desired position (phase position without load change).
- the load torque is now determined with a torque sensor 14 (see FIG. 7), it can be deduced from the characteristic field by which phase angle range ⁇ the position of the motor shaft deviates from the desired position if the torque changes by the amount ⁇ M. If this value is known, the position of the magnetic field of the stepping motor can be corrected by the motor drive by this angle ⁇ . Without correction of the phase angle, the actual position of the motor shaft would change to the desired position in the event of a load torque change ⁇ M. The phase angle correction sets a new equilibrium state without the motor shaft becoming slower or faster in the short term. Since the magnetic field of the stepping motor can be adjusted without delay, a regulation of the
- Phase angle ⁇ of the magnetic field without delay respond to load torque changes ⁇ M.
- a stepper motor controlled in this way maintains the phase angle, which exists at the target position of the motor shaft, even at its actual position, even if the load moment changes, because the phase senwinkel between desired position of the motor shaft and position of the Mag ⁇ netfelds is controlled load-dependent.
- FIG. 7 An arrangement for correcting the phase position is shown in FIG. 7.
- a stepping motor 11 is arranged with its motor shaft on a drive shaft 12. Between the stepping motor 11 and a load element 13, a torque sensor 14 is provided.
- the torque sensor 14 operates as a measuring device which outputs as measured values the load moments which the load element 13 exerts on the drive shaft 12. These are fed to the means, a control 15, which determines from the torque phase angle characteristic curve with the load moment change ⁇ M the phase angle change ⁇ by which the position of the magnetic field of the stepping motor 11 driving the motor shaft must be corrected. to maintain its nominal position.
- a rotary encoder 16 is used to determine the position of the motor shaft (see Fig. 8). The signal of the rotary encoder 16 is then used to control the phase angle of the magnetic field to the position of the stepping motor shaft.
- the pulses of the rotary encoder 16 are counted, but the time between the encoder pulses measured and summed. Therefore, the position of the motor shaft is not obtained at certain time intervals, but at fixed angular intervals, the time in which the motor shaft has reached the desired position is obtained.
- the method can only be used for a rotating motor; a position control at standstill is not possible.
- the control is as follows: It is known from the motor control how long the respective time interval between two encoder pulses should ideally be. Will this actual interval actually If the measured time interval is subtracted, it is known by which ⁇ t the respective time interval deviated from the desired interval. Adding the deviations up to the current time, one gets the time that the motor shaft was too early or too late at the place where the last measurement was carried out. Since the time deviation of the motor shaft position from the desired position is known, the motor control of the stepping motor can be influenced by a control such that the deviation approaches zero.
- the temporal resolution of the measurement depends only on the accuracy of the encoder 16 and the accuracy of the time measurement, but not on the resolution of the encoder 16. Since encoders 16 can be very accurately manufactured by simple means and time measurements with microprocessors resolutions of far less can be realized as 1 ⁇ s, so a very accurate determination of the deviation of the actual motor shaft position of the desired position is possible.
- the phase angle is controlled to the value that was present when switching on the control.
- the motor control (see Fig. 12) supplies the drive pulses for the stepper motor 11 initially without position control.
- the currents II, 12 of the motor windings of the stepping motor 11 are varied sinusoidally at fixed time intervals, the currents having a phase offset of 90 ° (see FIG. 9).
- FIG. 9 shows the motor currents Il and 12 for four full steps.
- a microprocessor also measures the time interval between two encoder pulses (.DELTA.T Dre hgeber) r which in this case ideally should be equal to the time interval of one half step ( ⁇ T) (see Fig. 10). If, for example, a rotary encoder is used that delivers 400 pulses / revolution, this corresponds to a pulse / half step for a stepping motor with a 1.8 ° step angle.
- FIG. 10 shows the control pulses IM M used by the motor control for switching the motor currents I of the stepping motor 11 for uncontrolled operation in the first row.
- the drive pulses IM M have a time interval ⁇ T motor .
- the rotary encoder pulses IM 0 output by the rotary encoder 16 are displayed. This is changing exhibit Zeit ⁇ intervals .DELTA.T Dre on hgeber. It can be seen that the rotary encoder pulses IM n do not run synchronously with the drive pulses IM M , but run behind the drive pulses IM M as a function of the change in the load.
- the difference between the setpoint duration for a half-step and the measured value is now formed and the result summed up.
- the sum begins when the control is switched on with the value 0.
- the summand indicates by which ⁇ t the motor shaft is too early or too late at the setpoint position (see FIG. 11).
- FIG. 11 shows the deviation of the actual position from the setpoint position in ⁇ s during operation without regulation.
- the pulses IM follow each other in half steps.
- the step duration of the next steps of the stepping motor 11 can be shortened or extended, so that the time deviation of the actual position from the desired position becomes as small as possible.
- the access to the motor current table (FIG. 9) can be set, in which the curve of the motor currents I is included in a tabular form:
- the motor controller reads from this table which motor current I is to be used for the next step.
- a pointer to the table value is incremented or decremented in fixed timer intervals, depending on the direction in which the motor is running.
- the distance between two table values can be assigned to a fixed time interval.
- the value for the time correction can be added to the pointer of the motor current table, so that the frequency of the drive pulses AM can be adjusted.
- Fig. 8 shows an arrangement for the seventh embodiment.
- On the drive shaft of the load element 13 of the rotary encoder 16 is arranged. Between shaft encoder and Lastele ⁇ ment 13 of the stepper motor 11 is located with its motor shaft.
- the rotary encoder 16 measures the movement of the drive shaft 12 and transmits the measured values to the means, which is realized as a controller 17 in FIG. Depending on the measured values, the controller generates 17 clock signals for the motor control of the stepping motor 11, which adjusts the drive pulses for the motor currents I of the stepping motor according to the above methods.
- a normal PID controller or a controller with fuzzy logic can be used for the control.
- the lasting Regel ⁇ difference can be controlled to zero.
- the encoder does not have to be mounted on the motor shaft. If the encoder is mounted on another shaft of the load element, the position of this shaft is regulated. If this shaft does not run at the same speed as the motor shaft, however, a transmission factor must be taken into account.
- Fig. 12 shows a block diagram of the arrangement which can be used for all embodiments.
- the measured values for example load torque signals
- the microprocessor 18 As a means.
- the microprocessor 18 generates, according to the method described above with reference to the exemplary embodiments, the signals which are necessary for a motor control of conventional design and possibly be supplied to an additional motor or brake and be used there to adjust the motor control 19 accordingly.
- the motor controller 19 is supplied with clock signals, a direction signal, and an enable signal.
- the motor controller 19 Depending on the clock signals, the motor controller 19 generates the drive pulses for the motor currents I for the stepper motor 20 in such a way that the phase position of the stepper motor is maintained despite changing the load.
- the microprocessor 18 may be programmed to operate as a controller or as a controller.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004039044A DE102004039044A1 (de) | 2004-08-11 | 2004-08-11 | Anordnung zum Antrieb eines Lastelementes |
PCT/EP2005/008593 WO2006018175A1 (de) | 2004-08-11 | 2005-08-08 | Anordnung zum antrieb eines lastelementes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1779504A1 true EP1779504A1 (de) | 2007-05-02 |
EP1779504B1 EP1779504B1 (de) | 2010-03-31 |
Family
ID=35351731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05784885A Expired - Fee Related EP1779504B1 (de) | 2004-08-11 | 2005-08-08 | Anordnung zum antrieb eines lastelementes |
Country Status (4)
Country | Link |
---|---|
US (1) | US7893647B2 (de) |
EP (1) | EP1779504B1 (de) |
DE (2) | DE102004039044A1 (de) |
WO (1) | WO2006018175A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8200124B2 (en) * | 2008-09-16 | 2012-06-12 | Brother Kogyo Kabushiki Kaisha | Belt unit and image forming device |
JP5633807B2 (ja) * | 2009-11-30 | 2014-12-03 | 株式会社リコー | 画像形成装置、並びに、像担持体の駆動制御方法及びこの方法を実行するためのプログラム |
JP5551669B2 (ja) * | 2011-09-30 | 2014-07-16 | 富士フイルム株式会社 | インクジェット記録装置及び方法 |
DE102014116714B3 (de) * | 2014-11-14 | 2016-02-25 | CS GmbH & Co. KG | Bremsenprüfstand |
CN106788010B (zh) * | 2016-11-28 | 2018-12-21 | 湖南明和光电设备有限公司 | 步进电机运动系统自检回零的方法 |
DE202019102353U1 (de) * | 2019-04-26 | 2020-07-28 | Faun Umwelttechnik Gmbh & Co. Kg | Nutzfahrzeug mit Haltebremse |
CN114994045A (zh) * | 2022-08-08 | 2022-09-02 | 西南交通大学 | 建筑垃圾再生砖混骨料中红砖含量测定装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US4006982A (en) * | 1975-04-24 | 1977-02-08 | Xerox Corporation | Photoelectrophoretic concurrent process cycling |
US4373147A (en) * | 1981-07-23 | 1983-02-08 | General Signal Corporation | Torque compensated electric motor |
JPS6162386A (ja) | 1984-09-03 | 1986-03-31 | Nissan Motor Co Ltd | 周期モ−タ駆動制御装置 |
JPH0729610B2 (ja) * | 1984-11-02 | 1995-04-05 | 本田技研工業株式会社 | 電磁型倍力装置 |
US4874974A (en) * | 1987-12-09 | 1989-10-17 | Wu Yao Yu | Motor with an auto output adjusting device |
US5200782A (en) * | 1991-11-01 | 1993-04-06 | Xerox Corporation | Disturbance isolation in a belt receptor of a color printer |
US5608770A (en) * | 1993-09-21 | 1997-03-04 | Ricoh Company, Ltd. | Frequency converter outputting a clock signal having a stable and accurate frequency |
US5663631A (en) * | 1994-07-19 | 1997-09-02 | Nippondenso Co., Ltd. | Generator with circuitry for controlling power generation based on rotational speed |
US5627438A (en) * | 1995-01-25 | 1997-05-06 | Barrett; Robert D. | Pulsing control for an inertial drive system for a multi-motor binary array vehicle |
DE69623076T2 (de) * | 1995-06-05 | 2003-04-17 | Kollmorgen Corp | System und Verfahren zur Steuerung von bürstenlosen Permanentmagnetmotoren |
CN1115608C (zh) | 1997-03-03 | 2003-07-23 | Oce印刷系统有限公司 | 能调节性能地进行印刷的印刷或复印装置及方法 |
JP3000953B2 (ja) * | 1997-03-21 | 2000-01-17 | トヨタ自動車株式会社 | 動力出力装置およびその制御方法 |
EP0895344B1 (de) * | 1997-07-30 | 2003-10-01 | Matsushita Electric Industrial Co., Ltd | Verfahren zum Regeln von Drehmomentschwankungen eines Motors mit Permanentmagneten im Inneren und ein Regler mit diesem Verfahren |
JPH1195503A (ja) * | 1997-09-18 | 1999-04-09 | Minolta Co Ltd | 画像形成装置およびそのリフレッシュ方法 |
DE19928366C1 (de) | 1999-06-21 | 2001-01-25 | Sig Positec Bergerlahr Gmbh & | Verfahren zum Betreiben eines Antriebssystems mit einem Schrittmotor |
US6556798B2 (en) * | 2001-02-16 | 2003-04-29 | Donald S. Rimai | Method and apparatus for using a conformable member in a frictional drive |
-
2004
- 2004-08-11 DE DE102004039044A patent/DE102004039044A1/de not_active Ceased
-
2005
- 2005-08-08 DE DE502005009324T patent/DE502005009324D1/de active Active
- 2005-08-08 US US11/659,167 patent/US7893647B2/en not_active Expired - Fee Related
- 2005-08-08 EP EP05784885A patent/EP1779504B1/de not_active Expired - Fee Related
- 2005-08-08 WO PCT/EP2005/008593 patent/WO2006018175A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2006018175A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1779504B1 (de) | 2010-03-31 |
US7893647B2 (en) | 2011-02-22 |
WO2006018175A1 (de) | 2006-02-23 |
DE502005009324D1 (de) | 2010-05-12 |
US20080107435A1 (en) | 2008-05-08 |
DE102004039044A1 (de) | 2006-02-23 |
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