JP2007232986A5 - - Google Patents

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JP2007232986A5
JP2007232986A5 JP2006053753A JP2006053753A JP2007232986A5 JP 2007232986 A5 JP2007232986 A5 JP 2007232986A5 JP 2006053753 A JP2006053753 A JP 2006053753A JP 2006053753 A JP2006053753 A JP 2006053753A JP 2007232986 A5 JP2007232986 A5 JP 2007232986A5
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rotation
rotating body
detection
motor
speed control
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JP2006053753A
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JP2007232986A (en
JP5110798B2 (en
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Claims (9)

所定のギア比によりギアを介してモータにより回転駆動される回転体と同軸上に配設された被検出部材のパターンを検出するごとに検出信号を出力する検出手段を備え、前記検出手段により出力された検出信号によって、前記回転体の角速度を検出し、前記検出手段の検出結果を基に前記回転体の回転駆動制御を行う速度制御装置であって、
前記検出手段により前記回転体の１回転当たりに出力される検出信号数は、前記ギア比の整数倍であり、前記検出手段により出力された検出信号に基づき、前記回転体の１回転当たりの回転ムラ成分と前記モータの回転ムラ成分とを示す回転ムラプロファイルを算出し、前記回転ムラプロファイルに基づいて前記回転体の回転駆動制御を行う制御手段、を備えることを特徴とする速度制御装置。 A detection means for outputting a detection signal each time detects the pattern of the detection member provided on a rotating member coaxially rotationally driven by a motor via a gear by a predetermined gear ratio, output by said detecting means A speed control device that detects an angular velocity of the rotating body based on the detected signal and performs rotation driving control of the rotating body based on a detection result of the detecting means;
The number of detection signals output per rotation of the rotating body by the detection means is an integer multiple of the gear ratio, and the rotation per rotation of the rotating body is based on the detection signals output by the detection means. A speed control apparatus comprising: a control unit that calculates a rotation unevenness profile indicating a unevenness component and a rotation unevenness component of the motor, and performs rotation drive control of the rotating body based on the rotation unevenness profile. 前記モータは、ステッピングモータであり、
前記ギアは、前記回転体と同軸上に配設されたギアであり、
前記検出手段は、前記回転体と同軸上に配設された被検出部材のスリットパターンを検出するエンコーダであることを特徴とする請求項１記載の速度制御装置。 The motor is a stepping motor;
The gear is a gear arranged coaxially with the rotating body,
2. The speed control apparatus according to claim 1, wherein the detecting means is an encoder that detects a slit pattern of a detected member disposed coaxially with the rotating body. 前記検出手段により出力された任意の検出信号及び該検出信号が出力された前後に出力された検出信号からなる複数の検出信号に対して所定のフィルタ係数に基づくデジタル信号処理を行い、前記回転体の角速度において所定の周波数成分を予め設定されたレベルだけ有する角速度変動データを算出する算出手段を備えることを特徴とする請求項１又は２記載の速度制御装置。 Performs digital signal processing based on a predetermined filter coefficient for the plurality of detection signals any detection signal and the detection signal output is made from the detection signal output to the front and rear output by said detecting means, said rotary member predetermined speed controller according to claim 1, wherein further comprising a calculating means to calculate the angular speed variation data with only predetermined level frequency components in the angular velocity of the. 前記算出手段より算出された前記角速度変動データに基づいて、前記回転体の角速度変動を補正するための前記モータの駆動周波数の設定プロファイルを、前記検出手段による前記回転体１周分の検出データとして生成し、前記検出手段により出力される検出信号に同期して、前記設定プロファイルに基づいた、前記モータを駆動するパルスにより前記モータを駆動する駆動制御手段、を備えることを特徴とする請求項３に記載の速度制御装置。 Based on the angular velocity fluctuation data calculated by the calculating means, a setting profile of the driving frequency of the motor for correcting the angular velocity fluctuation of the rotating body is detected as data for one rotation of the rotating body by the detecting means. generated, in synchronization with the detection signal output by said detecting means, based on the configuration profile, claim 3, characterized in that it comprises a drive control unit that drives the motor by a pulse for driving the motor The speed control device described in 1. 前記デジタル信号処理対象の前記複数の検出信号数は、前記モータの１回転に相当する前記検出手段により出力される検出信号数に対して少なくとも同数以下であることを特徴とする請求項３記載の速度制御装置。 The number of the plurality of detection signals to be processed by the digital signal is at least equal to or less than the number of detection signals output by the detection means corresponding to one rotation of the motor. Speed control device. 前記所定のフィルタ係数に基づく前記デジタル信号処理は、複数の遮断周波数を有するフィルタ演算処理であり、
前記所定のフィルタ係数は、低域通過型フィルタ特性を有すると共に、前記モータの１回転の周波数より高い周波数成分を遮断する特性を有することを特徴とする請求項３記載の速度制御装置。 The digital signal processing based on the predetermined filter coefficient is filter arithmetic processing having a plurality of cutoff frequencies,
4. The speed control apparatus according to claim 3, wherein the predetermined filter coefficient has a low-pass filter characteristic and a characteristic of cutting off a frequency component higher than a frequency of one rotation of the motor. 前記請求項１乃至６の何れかに記載の速度制御装置を備えることを特徴とする画像形成装置。   An image forming apparatus comprising the speed control device according to claim 1. 前記速度制御装置により回転駆動制御される前記回転体は、電子写真方式による画像形成に用いる感光体であることを特徴とする請求項７記載の画像形成装置。   8. The image forming apparatus according to claim 7, wherein the rotating body whose rotation is controlled by the speed control apparatus is a photoconductor used for image formation by an electrophotographic method. 所定のギア比によりギアを介してモータにより回転駆動される回転体と同軸上に配設された被検出部材のパターンを検出するごとに検出信号を出力する検出手段を備え、前記検出手段により出力された検出信号によって、前記回転体の角速度を検出し、前記検出手段の検出結果を基に前記回転体の回転駆動制御を行う速度制御装置の制御方法であって、
前記検出手段により前記回転体の１回転当たりに出力される検出信号数は、前記ギア比の整数倍であり、前記検出手段により出力された検出信号に基づき、前記回転体の１回転当たりの回転ムラ成分と前記モータの回転ムラ成分とを示す回転ムラプロファイルを算出し、前記回転ムラプロファイルに基づいて前記回転体の回転駆動制御を行う制御ステップ、を備えることを特徴とする制御方法。 A detection means for outputting a detection signal each time detects the pattern of the detection member provided on a rotating member coaxially rotationally driven by a motor via a gear by a predetermined gear ratio, output by said detecting means A control method of a speed control device that detects an angular velocity of the rotating body based on the detected signal and performs rotation driving control of the rotating body based on a detection result of the detecting means;
The number of detection signals output per rotation of the rotating body by the detection means is an integer multiple of the gear ratio, and the rotation per rotation of the rotating body is based on the detection signals output by the detection means. A control method comprising: a control step of calculating a rotation unevenness profile indicating a unevenness component and a rotation unevenness component of the motor, and performing rotation drive control of the rotating body based on the rotation unevenness profile.
JP2006053753A 2006-02-28 2006-02-28 Image forming apparatus Expired - Fee Related JP5110798B2 (en)

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JP2007232986A JP2007232986A (en) 2007-09-13
JP2007232986A5 true JP2007232986A5 (en) 2010-09-02
JP5110798B2 JP5110798B2 (en) 2012-12-26

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JP5229615B2 (en) 2008-06-30 2013-07-03 株式会社リコー Image forming apparatus
JP2018066779A (en) 2016-10-17 2018-04-26 コニカミノルタ株式会社 Reading device and image forming system, and image forming apparatus

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JP2954433B2 (en) * 1992-08-28 1999-09-27 キヤノン株式会社 Image forming device
JPH07128946A (en) * 1993-10-29 1995-05-19 Konica Corp Color image forming device
JP3785780B2 (en) * 1997-12-22 2006-06-14 京セラ株式会社 Color image forming apparatus
JPH11194693A (en) * 1997-12-26 1999-07-21 Minolta Co Ltd Image forming device
JP2002132008A (en) * 2000-10-26 2002-05-09 Ricoh Co Ltd Image forming device
JP4731735B2 (en) * 2001-06-11 2011-07-27 キヤノン株式会社 Image forming apparatus
JP2003280480A (en) * 2002-03-19 2003-10-02 Ricoh Co Ltd Image forming apparatus and image forming method therefor
JP2005258034A (en) * 2004-03-11 2005-09-22 Hitachi Kokusai Electric Inc Electric universal head
JP2005309309A (en) * 2004-04-26 2005-11-04 Canon Inc Drive control device for color image forming apparatus
JP2006030707A (en) * 2004-07-16 2006-02-02 Ricoh Co Ltd Process cartridge and image forming apparatus

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