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31. 发明授权

US07221896B2 Fixing device for fixing an unfixed developing agent on a recording medium and image forming apparatus including the same 有权
标题翻译：用于将未固定的显影剂固定在记录介质上的固定装置和包括该固定装置的图像形成装置
公开(公告)号：US07221896B2
公开(公告)日：2007-05-22
申请号：US11007757
申请日：2004-12-07
申请人： Hisashi Yoshimura , Hirokazu Nakamura , Masaki Matsushita , Hirokazu Fujita , Naozumi Ueno
发明人： Hisashi Yoshimura , Hirokazu Nakamura , Masaki Matsushita , Hirokazu Fujita , Naozumi Ueno
IPC分类号： G03G15/20
CPC分类号： G03G15/2028
摘要： A fixing device of the present invention includes a pressure roller and a peeling roller both of which press a heat roller. The pressure roller is disposed upstream to the peeling roller in a transport direction of a recording paper. An outer diameter of the heat roller, an outer diameter of the pressure roller, and an outer diameter of the peeling roller decrease in this order. With this arrangement, it is possible to realize a fixing device which achieves a reduced size and reduced power requirements, while ensuring a fixing property and a peeling property with respect to a recording medium.Further, with an arrangement in which the pressure roller and the peeling roller which press the heat roller are disposed so that, in a cross section orthogonal to central axes of the heat roller, the pressure roller, and the peeling roller, a first orthogonal line being orthogonal to a first line that connects a center of the heat roller and a center of the pressure roller and passing through a nip portion between both of the rollers, comes into contact with a contact area in a predetermined area on a peripheral surface of the peeling roller, a fixing device of the present invention can transport the recording paper without causing a paper jam when plural pieces of recording paper stacked are transported.
摘要翻译：本发明的定影装置包括压力辊和剥离辊，两者均压入加热辊。加压辊在记录纸的输送方向上设置在剥离辊的上游。加热辊的外径，加压辊的外径以及剥离辊的外径依次减小。通过这种布置，可以实现在确保相对于记录介质的定影性和剥离性的同时实现尺寸减小和功率要求降低的定影装置。此外，通过设置加压辊和按压加热辊的剥离辊的布置，使得在与加热辊，加压辊和剥离辊的中心轴正交的截面中，第一正交线与连接加热辊的中心和加压辊的中心并通过两个辊之间的压合部的第一线正交，与第一线接触，在与第二线的外周面上的预定区域中的接触区域剥离辊，本发明的定影装置可以在传送堆叠的多张记录纸的情况下传送记录纸而不引起卡纸。

32. 发明授权

US07176651B2 Fault detection system for inverter 有权
标题翻译：变频器故障检测系统
公开(公告)号：US07176651B2
公开(公告)日：2007-02-13
申请号：US11044297
申请日：2005-01-28
申请人： Takayuki Kifuku , Masaki Matsushita
发明人： Takayuki Kifuku , Masaki Matsushita
IPC分类号： H02P7/00
CPC分类号： H02M7/5387 , H02M1/32 , H02M7/53873
摘要： An inverter fault detection system of the present invention is provided with: bus voltage monitor means for monitoring the bus voltage of a three-phase inverter; output voltage monitor means for summing the phase output voltages coming from the three-phase PWM inverter, and for outputting the resulting summed output voltage through a filter having a low-pass characteristic of passing through only the cutoff frequency lower than the PWM carrier frequency; and fault determination means for determining that the three-phase PWM inverter is in the faulty state when the output voltage coming from the output voltage monitor means is almost the same as the voltage value corresponding to 3/2 times of the bus voltage monitored by the bus voltage monitor means.
摘要翻译：本发明的逆变器故障检测系统具有：母线电压监视装置，用于监测三相逆变器的总线电压; 输出电压监视器装置，用于对来自三相PWM逆变器的相输出电压进行求和，并且通过具有仅通过低于PWM载波频率的截止频率的低通特性的滤波器输出所得到的相加的输出电压; 以及故障判定单元，当来自所述输出电压监视单元的输出电压与由所述输出电压监视单元监视的所述总线电压的3/2倍对应的电压值几乎相同时，判定所述三相PWM逆变器处于故障状态总线电压监视装置。

33. 发明授权

US06522097B2 Position detecting apparatus and abnormality detecting apparatus 有权
标题翻译：位置检测装置和异常检测装置
公开(公告)号：US06522097B2
公开(公告)日：2003-02-18
申请号：US09985861
申请日：2001-11-06
申请人： Chiaki Fujimoto , Masaki Matsushita , Takayuki Kifuku
发明人： Chiaki Fujimoto , Masaki Matsushita , Takayuki Kifuku
IPC分类号： G05B1931
CPC分类号： H02P6/16 , H02P29/02
摘要： A position detecting apparatus includes: a position sensor 10 that inputs an excitation signal having a given period waveform and outputs a first amplitude modified signal induced in accordance with a detected position from a first output winding and outputs a second amplitude modified signal induced in accordance with a detected position from a second output winding; a first phase shifting circuit 23 for electrically shifting a phase of the first amplitude modified signal by a given angle; a second phase shifting circuit 24 for electrically shifting a phase of the second amplitude modified signal by a given angle; converting means 15,16 for converting the signal outputted from the first phase shifting circuit 23 and the signal outputted from the second phase shifting circuit 24 into a phase modulated signal; and calculating means 17-22 for obtaining a detected position on the basis of the phase of the phase modulated signal outputted from the converting means 15,16.
摘要翻译：位置检测装置包括：位置传感器10，其输入具有给定周期波形的激励信号，并输出根据来自第一输出绕组的检测位置感应的第一幅度修正信号，并输出根据来自第二输出绕组的检测位置; 第一移相电路23，用于将第一幅度修正信号的相位电移位给定的角度; 第二移相电路24，用于将第二幅度修正信号的相位电移位给定角度; 用于将从第一移相电路23输出的信号和从第二移相电路24输出的信号转换为相位调制信号的转换装置15,16; 以及计算装置17-22，用于根据从转换装置15,16输出的相位调制信号的相位获得检测位置。

34. 发明授权

US06427105B1 Electric power steering control system and control method thereof 有权
标题翻译：电动助力转向控制系统及其控制方法
公开(公告)号：US06427105B1
公开(公告)日：2002-07-30
申请号：US10043226
申请日：2002-01-14
申请人： Masaki Matsushita
发明人： Masaki Matsushita
IPC分类号： G05E700
CPC分类号： B62D5/0463 , B62D5/046 , H02P6/085
摘要： An electric power steering control system in which by using a brushless motor as a motor for generating steering assist force, less trouble occurs, and an error in torque control and transient vibration are small even when a steering wheel is turned sharply. The electric power steering control system is arranged so as to control a drive current of a brushless motor that generates a steering assist force on the basis of steering torque acting on a steering shaft and a vehicle speed. The system comprises a d-q axis voltage command section for computing a d- and q-axis voltage command value in response to a deviation of current between a d- and q-axis current command value and a d- and q-axis detection current value, a d-q coordinate inverse transformation section for performing the d-q coordinate inverse transformation on the basis of the d- and q-axis voltage command value and an electrical angle signal eventually thereby computing a three-phase voltage command value, and a PWM output section for generating a PWM waveform for PWM drive of the brushless motor in response to the three-phase voltage command compensation value.
摘要翻译：一种电动助力转向控制系统，其中通过使用无刷电动机作为用于产生转向辅助力的电动机，发生较少的故障，并且即使当方向盘急剧转动时，转矩控制和瞬态振动的误差也很小。电动助力转向控制系统被布置成基于作用在转向轴上的转向扭矩和车速来控制产生转向辅助力的无刷电动机的驱动电流。该系统包括dq轴电压指令部分，用于响应于d轴和q轴电流指令值与d轴和q轴检测电流值之间的电流偏差来计算d轴和q轴电压指令值，dq坐标逆变换部分，用于根据d轴和q轴电压指令值和电角度信号执行dq坐标逆变换，从而计算三相电压指令值;以及PWM输出部分，用于响应于三相电压指令补偿值产生用于无刷电动机的PWM驱动的PWM波形。

35. 发明授权

US07336456B2 Control-motor system 有权
标题翻译：控制电机系统
公开(公告)号：US07336456B2
公开(公告)日：2008-02-26
申请号：US11177331
申请日：2005-07-11
申请人： Masaki Matsushita , Takayuki Kifuku , Hideki Doi , Katsuhiko Ohmae
发明人： Masaki Matsushita , Takayuki Kifuku , Hideki Doi , Katsuhiko Ohmae
IPC分类号： H02H7/08
CPC分类号： B62D5/049 , B62D5/0487 , Y02T10/7258
摘要： An objective is to detect a resolver malfunction without fail, using a low-cost resolver having the small number of the poles, and a control-motor system having advantage in small sizing and high-power outputting. In the control-motor system, the system for driving a 2m-pole motor based on a rotor rotation angle θ detected by a 2n-pole resolver, where m and n being counting numbers, is characterized in that: the sum of the square of a signal modulated by sin θ and the square of a signal modulated by cos θ in the resolver in which an excitation signal generated in said system is modulated by sin θ and cos θ in response to the rotor rotation angle θ of the resolver is compared to a predetermined malfunction threshold value, so that malfunction determination related to the resolver is performed, and also, given that the sum is a2 when the resolver is recognized to be in normal operation, the malfunction determination threshold value is made to be not smaller than {a×cos((π/2)/(m/n))}2.
摘要翻译：目的是使用具有极小数量的低成本旋转变压器，以及具有小尺寸和高功率输出优点的控制电动机系统，无故障地检测分解器故障。在控制电动机系统中，基于由2n极解算器检测的转子旋转角度θ驱动2m极电动机的系统，其中m和n是计数数字，其特征在于：由sinθ调制的信号和在解算器中由cosθ调制的信号的平方，其中在所述系统中产生的激励信号响应于旋转变压器的转子旋转角θ被sinθ和cosθ调制，并与预定的故障阈值，从而进行与解算器相关的故障判定，并且当解析器被识别为正常操作时，给出总和为“2”，故障判定阈值被制成不小于{axcos（（pi / 2）/（m / n））} <2>。

36. 发明申请

US20070252547A1 Motor control apparatus 有权
标题翻译：电机控制装置
公开(公告)号：US20070252547A1
公开(公告)日：2007-11-01
申请号：US11522894
申请日：2006-09-19
申请人： Takayuki Kifuku , Masaki Matsushita , Hiroyuki Kozuki
发明人： Takayuki Kifuku , Masaki Matsushita , Hiroyuki Kozuki
IPC分类号： H02P7/00
CPC分类号： H02P23/06 , H02H7/0838
摘要： A motor control apparatus can protect circuit elements in an appropriate manner while preventing an incorrect abnormality determination when a motor is in regeneration operation, etc. The apparatus includes a target current calculation section (51), a drive control section (52) that generates a drive signal based on a current deviation ΔI between a target current (IMT) and a detected current (IMS), an abnormality determination section (53) that generates an abnormality determination signal based on the target current (IMT) and the detected current (IMS), and a regeneration operation determination section (59) that determines whether the motor (4) is in a regeneration operation state. When it is determined that the motor (4) is in a regeneration operation, a determination threshold of the abnormality determination section (53) is set to a value larger than a determination threshold during power running operation.
摘要翻译：电动机控制装置可以以适当的方式保护电路元件，同时防止当电动机处于再生操作时的不正确的异常判定等。该装置包括目标电流计算部（51），驱动控制部（52），其产生基于目标电流（IMT）和检测电流（IMS）之间的电流偏差ΔI的驱动信号，基于目标电流（IMT）和检测电流（IMS）生成异常判定信号的异常判定部（53））和判定电动机（4）是否处于再生运转状态的再生动作判定部（59）。当确定电动机（4）处于再生操作时，异常判定部（53）的判定阈值被设定为大于运转动作期间的判定阈值的值。

37. 发明申请

US20070199764A1 Electric power steering control apparatus 有权
标题翻译：电动助力转向控制装置
公开(公告)号：US20070199764A1
公开(公告)日：2007-08-30
申请号：US11493598
申请日：2006-07-27
申请人： Takayuki Kifuku , Masaki Matsushita , Hiroyuki Kozuki
发明人： Takayuki Kifuku , Masaki Matsushita , Hiroyuki Kozuki
IPC分类号： B62D5/04
CPC分类号： B62D5/049 , B62D5/0463 , B62D5/0484
摘要： An electric power steering control apparatus can limit a motor impression voltage thereby to maintain an appropriate motor output even upon occurrence of a failure of a motor current detection circuit or a motor current feedback control system. The apparatus includes a motor that generates an assist force to the steering system, an input processing section that takes in a steering torque signal from a torque sensor, an output processing section that drives the motor, and a processing unit that provides an instruction to the output processing section based on the steering torque signal. The processing unit includes an impression voltage calculation section that calculates an amount of operation to the motor in accordance with the steering torque signal, and an impression voltage limiting section that limits the impression voltage to predetermined limit values or less corresponding to the direction of the steering torque signal.
摘要翻译：电动动力转向控制装置可以限制电动机压印电压，从而即使在发生电动机电流检测电路或电动机电流反馈控制系统的故障时也能保持适当的电动机输出。该装置包括向转向系统产生辅助力的电动机，从转矩传感器接收转向转矩信号的输入处理部，驱动电动机的输出处理部，以及向该转向系统提供指令的处理部输出处理部。处理单元包括压印电压计算部，其根据转向转矩信号计算对电动机的操作量，以及压印电压限制部，其将压印电压限制在与转向方向对应的规定极限值以下转矩信号。

38. 发明授权

US07161317B2 Electromotive power steering controller 有权
标题翻译：电动助力转向控制器
公开(公告)号：US07161317B2
公开(公告)日：2007-01-09
申请号：US11211577
申请日：2005-08-26
申请人： Masaki Matsushita , Takayuki Kifuku , Hiroyuki Kozuki
发明人： Masaki Matsushita , Takayuki Kifuku , Hiroyuki Kozuki
IPC分类号： H02P7/00
CPC分类号： B62D5/0487 , H02P21/22
摘要： An objective is to provide a specific realization means for easily determining malfunction of a system in an electromotive power steering controller. The electromotive power steering controller includes: a voltage controller for controlling voltage applying to a motor based on a d-axis current command value and a q-axis current command value that are set by a d-q-command-value setting unit, and a d-axis current detection value and a q-axis current detection value that are obtained by, using the d-q coordinate system, transforming three-phase ac current that has been actually flowing in the motor and has been detected by a current detector; and a malfunction determining unit for determining that malfunction has occurred in the control system if at least one of the phase-current detection value is out of a first predetermined permissible range.
摘要翻译：目的是提供一种用于容易地确定电动助力转向控制器中的系统的故障的具体实现装置。电动动力转向控制器包括：电压控制器，用于基于由dq指令值设定单元设定的d轴电流指令值和q轴电流指令值，控制施加于电动机的电压，d 通过使用dq坐标系获得的电流检测值和q轴电流检测值，其变换已经在电动机中实际流动并且由电流检测器检测到的三相交流电流; 以及故障确定单元，用于如果所述相电流检测值中的至少一个超出第一预定容许范围，则确定在所述控制系统中已发生故障。

39. 发明授权

US07106017B2 Motor control device 有权
公开(公告)号：US07106017B2
公开(公告)日：2006-09-12
申请号：US09883391
申请日：2001-06-19
申请人： Takayuki Kifuku , Masaki Matsushita
发明人： Takayuki Kifuku , Masaki Matsushita
IPC分类号： H02O7/00
CPC分类号： H02H7/0858 , H02H7/0833 , H02P21/22
摘要： A motor control device for a multiple-phase motor includes a drive circuit (PWM inverter) which drives the multiple-phase motor (three-phase DC brushless motor), and a micro-controller that controls the drive circuit, wherein the micro-controller limits a motor current in accordance with an integrated value of a predetermined function of a phase current.

40. 发明申请

US20060055243A1 Control-motor system 有权
标题翻译：控制电机系统
公开(公告)号：US20060055243A1
公开(公告)日：2006-03-16
申请号：US11177331
申请日：2005-07-11
申请人： Masaki Matsushita , Takayuki Kifuku , Hideki Doi , Katsuhiko Ohmae
发明人： Masaki Matsushita , Takayuki Kifuku , Hideki Doi , Katsuhiko Ohmae
IPC分类号： H02G3/00
CPC分类号： B62D5/049 , B62D5/0487 , Y02T10/7258
摘要： An objective is to detect a resolver malfunction without fail, using a low-cost resolver having the small number of the poles, and a control-motor system having advantage in small sizing and high-power outputting. In the control-motor system, the system for driving a 2m-pole motor based on a rotor rotation angle θ detected by a 2n-pole resolver, where m and n being counting numbers, is characterized in that: the sum of the square of a signal modulated by sin θ and the square of a signal modulated by cos θ in the resolver in which an excitation signal generated in said system is modulated by sin θ and cos θ in response to the rotor rotation angle θ of the resolver is compared to a predetermined malfunction threshold value, so that malfunction determination related to the resolver is performed, and also, given that the sum is a2 when the resolver is recognized to be in normal operation, the malfunction determination threshold value is made to be not smaller than {a×cos((π/2)/(m/n))}2.
摘要翻译：目的是使用具有极小数量的低成本旋转变压器，以及具有小尺寸和高功率输出优点的控制电动机系统，无故障地检测分解器故障。在控制电动机系统中，基于由2n极解算器检测的转子旋转角度θ驱动2m极电动机的系统，其中m和n是计数数字，其特征在于：由sinθ调制的信号和在解算器中由cosθ调制的信号的平方，其中在所述系统中产生的激励信号响应于旋转变压器的转子旋转角θ被sinθ和cosθ调制，并与预定的故障阈值，从而进行与解算器相关的故障判定，并且当解析器被识别为正常操作时，给出总和为“2”，故障判定阈值被制成不小于{axcos（（pi / 2）/（m / n））} <2>。

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