公开(公告)号：US20100305787A1

公开(公告)日：2010-12-02

申请号：US12677967

申请日：2007-09-18

申请人： Keiji Nakatsu ,  Masataka Yabuuchi

发明人： Keiji Nakatsu ,  Masataka Yabuuchi

IPC分类号： B60L15/20

CPC分类号： B60L3/06 ,  B60L3/10 ,  B60L3/104 ,  B60L3/106 ,  B60L3/108 ,  B60L2200/26 ,  B60T8/1705 ,  B60T8/885 ,  B60T2270/402 ,  Y02T10/646 ,  Y02T10/7258

摘要： A first threshold is determined, with reference to an absolute acceleration that is determined in accordance with a vehicle usage condition, to detect an acceleration change generated in acceleration of a self-axle speed that is a maximum speed (a minimum speed in a decelerating operation) of revolving speeds of plural motors that drive plural driving wheel axles. When the acceleration exceeds the first threshold, a system for generating a target torque command value reduced in accordance with the acceleration deviation is separated by setting an output of a comparator circuit to level “0”, and a first-order delay circuit outputs the target torque command value subjected to a reduction process during a processing period designated by an output of a delay time generating circuit.

摘要翻译： 参照根据车辆使用条件确定的绝对加速度来确定第一阈值，以检测作为最大速度（减速操作中的最小速度）的自身轴速度的加速度中产生的加速度变化 ）驱动多个驱动轮轴的多个马达的转速。 当加速度超过第一阈值时，通过将比较器电路的输出设置为“0”来分离用于产生根据加速度偏差减小的目标转矩指令值的系统，并且一阶延迟电路输出目标 在由延迟时间产生电路的输出指定的处理期间中进行缩减处理的转矩指令值。

公开(公告)号：US08280568B2

公开(公告)日：2012-10-02

申请号：US12677967

申请日：2007-09-18

申请人： Keiji Nakatsu ,  Masataka Yabuuchi

发明人： Keiji Nakatsu ,  Masataka Yabuuchi

IPC分类号： B60L15/20

CPC分类号： B60L3/06 ,  B60L3/10 ,  B60L3/104 ,  B60L3/106 ,  B60L3/108 ,  B60L2200/26 ,  B60T8/1705 ,  B60T8/885 ,  B60T2270/402 ,  Y02T10/646 ,  Y02T10/7258

摘要： A first threshold is determined, with reference to an absolute acceleration that is determined in accordance with a vehicle usage condition, to detect an acceleration change generated in acceleration of a self-axle speed that is a maximum speed (a minimum speed in a decelerating operation) of revolving speeds of plural motors that drive plural driving wheel axles. When the acceleration exceeds the first threshold, a system for generating a target torque command value reduced in accordance with the acceleration deviation is separated by setting an output of a comparator circuit to level “0”, and a first-order delay circuit outputs the target torque command value subjected to a reduction process during a processing period designated by an output of a delay time generating circuit.

摘要翻译： 参照根据车辆使用条件确定的绝对加速度来确定第一阈值，以检测作为最大速度（减速操作中的最小速度）的自身轴速度的加速度中产生的加速度变化 ）驱动多个驱动轮轴的多个马达的转速。 当加速度超过第一阈值时，通过将比较器电路的输出设置为电平0来分离用于产生根据加速度偏差减小的目标转矩指令值的系统，并且一阶延迟电路输出目标转矩指令 在由延迟时间产生电路的输出指定的处理期间内进行缩减处理的值。

公开(公告)号：US20100179713A1

公开(公告)日：2010-07-15

申请号：US12665669

申请日：2007-06-27

申请人： Masataka Yabuuchi ,  Hidetoshi Kitanaka ,  Keiji Nakatsu

发明人： Masataka Yabuuchi ,  Hidetoshi Kitanaka ,  Keiji Nakatsu

IPC分类号： B61C15/08 ,  G05D1/00 ,  G06F19/00

CPC分类号： B60L9/24 ,  B60L3/10 ,  B60L3/102 ,  B60L3/104 ,  B60L3/106 ,  B60L15/20 ,  B60L2200/26 ,  B60T8/1705 ,  H02P5/50 ,  Y02T10/645 ,  Y02T10/7275

摘要： Provided is a controlling device for a railway electric car, the controlling device being able to detect a slipping/sliding phenomenon during, in particular, high-speed travel and to exercise slipping/sliding control in an appropriate manner. A slip controlling unit 1 includes a first adhesion level index generating unit and a second adhesion level index generating unit. In a normal slipping state in which an acceleration changes instantaneously, torque control is exercised by using a first adhesion level index generated by the first adhesion level index generating unit based on an acceleration deviation and a speed deviation. In a slipping state during high-speed travel, because the acceleration deviation and the speed deviation are small, torque control is exercised by using a second adhesion level index generated by multiplying the first adhesion level index by a gain equal to or smaller than 1 generated by the second adhesion level index generating unit.

摘要翻译： 提供一种用于铁路电动汽车的控制装置，该控制装置能够在特别是高速行驶期间检测滑移/滑动现象，并以适当的方式进行滑动/滑动控制。 滑动控制单元1包括第一粘附度指标生成单元和第二粘附度指标生成单元。 在加速瞬时变化的正常滑动状态下，通过使用基于加速度偏差和速度偏差的第一粘附度指标生成部生成的第一粘附度指标来进行扭矩控制。 在高速行驶期间的滑动状态下，由于加速偏差和速度偏差小，因此通过使用通过将第一粘附等级指数乘以等于或小于1的增益而产生的第二粘附等级指标来进行扭矩控制 通过第二粘附度指标生成单元。

公开(公告)号：US08285430B2

公开(公告)日：2012-10-09

申请号：US12665669

申请日：2007-06-27

申请人： Masataka Yabuuchi ,  Hidetoshi Kitanaka ,  Keiji Nakatsu

发明人： Masataka Yabuuchi ,  Hidetoshi Kitanaka ,  Keiji Nakatsu

IPC分类号： B61C15/08 ,  B61C9/46

CPC分类号： B60L9/24 ,  B60L3/10 ,  B60L3/102 ,  B60L3/104 ,  B60L3/106 ,  B60L15/20 ,  B60L2200/26 ,  B60T8/1705 ,  H02P5/50 ,  Y02T10/645 ,  Y02T10/7275

摘要： Provided is a controlling device for a railway electric car, the controlling device being able to detect a slipping/sliding phenomenon during, in particular, high-speed travel and to exercise slipping/sliding control in an appropriate manner. A slip controlling unit 1 includes a first adhesion level index generating unit and a second adhesion level index generating unit. In a normal slipping state in which an acceleration changes instantaneously, torque control is exercised by using a first adhesion level index generated by the first adhesion level index generating unit based on an acceleration deviation and a speed deviation. In a slipping state during high-speed travel, because the acceleration deviation and the speed deviation are small, torque control is exercised by using a second adhesion level index generated by multiplying the first adhesion level index by a gain equal to or smaller than 1 generated by the second adhesion level index generating unit.

摘要翻译： 提供一种用于铁路电动汽车的控制装置，该控制装置能够在特别是高速行驶期间检测滑移/滑动现象，并以适当的方式进行滑动/滑动控制。 滑动控制单元1包括第一粘附度指标生成单元和第二粘附度指标生成单元。 在加速瞬时变化的正常滑动状态下，通过使用基于加速度偏差和速度偏差的第一粘附度指标生成部生成的第一粘附度指标来进行扭矩控制。 在高速行驶期间的滑动状态下，由于加速偏差和速度偏差小，因此通过使用通过将第一粘附等级指数乘以等于或小于1的增益而产生的第二粘附等级指标来进行扭矩控制 通过第二粘附度指标生成单元。

公开(公告)号：US4835752A

公开(公告)日：1989-05-30

申请号：US132167

申请日：1987-12-14

申请人： Keiji Nakatsu ,  Shigeo Hayashi ,  Masaharu Ogawa ,  Osamu Itou ,  Isao Watanabe ,  Kunimaro Tanaka

发明人： Keiji Nakatsu ,  Shigeo Hayashi ,  Masaharu Ogawa ,  Osamu Itou ,  Isao Watanabe ,  Kunimaro Tanaka

IPC分类号： G11B7/085

CPC分类号： G11B7/08529 ,  G11B7/08517

摘要： A device for driving and controlling an optical head by forming a spot of a light beam on an optical disk having a plurality of tracks and detecting light from the spot reflected on the optical disk by a pair of optical detectors disposed in the head. This device has: a head actuator for moving a movable portion of the optical head in the radial direction of the disk; a speed detector for detecting the track-crossing speed of the spot from outputs from the optical detectors; a reference speed generator for generating, while accessing to a target track, a reference moving speed signal in accordance with the distance to the target track obtained from the outputs from the optical detectors, the movable head portion being moved on the basis of the reference moving speed signal so that the speed of the movable portion decreases at a position near the target track before the light beam spot reaches this track; a speed error detector for obtaining the difference between outputs from the reference speed generator and the speed detector; and a magnification change circuit adapted for amplifying the outputs from the reference speed generator and the speed detector by a predetermined multiplying factor when the distance between the light beam spot and the target track, or the crossing speed of the spot, becomes smaller than a predetermined value, the magnification change circuit also being adapted for outputting the difference obtained by the speed error detector after multiplying it by the reciprocal of the multiplying factor. The head actuator is driven on the basis of the output from the error detector so as to control the speed of the movable head portion.

摘要翻译： 一种用于通过在具有多个轨道的光盘上形成光束点并且通过设置在头部中的一对光学检测器从光盘上反射的光点检测光来驱动和控制光学头的装置。 该装置具有：头致动器，用于沿光盘的径向方向移动光头的可移动部分; 速度检测器，用于从光学检测器的输出检测光斑的跟踪交叉速度; 参考速度发生器，用于在根据从所述光学检测器的输出获得的与所述目标轨迹的距离的同时访问目标轨道时生成参考移动速度信号，所述可移动头部基于所述参考移动来移动 使得在光束点到达该轨道之前，可动部分的速度在靠近目标轨道的位置处减小; 用于获得来自基准速度发生器和速度检测器的输出之间的差的速度误差检测器; 以及放大率变化电路，其适用于当光束光点与目标光道之间的距离或点的交叉速度变得小于预定的倍数时，以基准速度发生器和速度检测器的输出放大预定的倍率 值，倍率变化电路也适于输出由速度误差检测器乘以乘法乘数后的差值。 基于来自误差检测器的输出来驱动头致动器，以便控制可动头部的速度。

公开(公告)号：US5264911A

公开(公告)日：1993-11-23

申请号：US810209

申请日：1991-12-19

申请人： Kazuhiko Nakane ,  Masayoshi Shimamoto ,  Yoshihiro Kiyose ,  Keiji Nakatsu ,  Isao Watanabe ,  Masami Horita ,  Kenichi Sato ,  Kenji Shimozawa ,  Hiroshi Konuma ,  Masaharu Yoshimura

发明人： Kazuhiko Nakane ,  Masayoshi Shimamoto ,  Yoshihiro Kiyose ,  Keiji Nakatsu ,  Isao Watanabe ,  Masami Horita ,  Kenichi Sato ,  Kenji Shimozawa ,  Hiroshi Konuma ,  Masaharu Yoshimura

IPC分类号： G11B33/10 ,  G01J1/42 ,  G11B3/90

CPC分类号： G11B33/10

摘要： A laser power measuring jig is adapted for use in measuring a laser power of a laser beam which is emitted from an optical head of an optical disk unit which records and/or reproduces information on and/or from a medium. The laser power measuring jig supplies power information related to the laser power of the laser beam to a power meter which measures the laser power. The laser power measuring jig includes a main jig body which has a size and a shape which are approximately the same as those of the medium, and this main jig body is loaded into the optical disk unit. The laser power measuring jig also includes a mechanism for outputting the power information outside the optical disk unit and supplying the laser power information to the power meter when the main jig body is loaded into the optical disk unit.

摘要翻译： 激光功率测量夹具适用于测量从光盘单元的光头发射的激光束的激光功率，其在介质上记录和/或再现信息。 激光功率测量夹具将与激光束的激光功率有关的功率信息提供给测量激光功率的功率计。 激光功率测量夹具包括具有与介质大致相同的尺寸和形状的主夹具本体，并且该主夹具本体被装载到光盘单元中。 激光功率测量夹具还包括一个机构，用于当主夹具体被装载到光盘单元中时，输出光盘单元外部的功率信息并将激光功率信息提供给功率计。

公开(公告)号：US4901299A

公开(公告)日：1990-02-13

申请号：US138952

申请日：1987-12-29

申请人： Keiji Nakatsu

发明人： Keiji Nakatsu

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B21/08

CPC分类号： G11B7/0948 ,  G11B7/08517 ,  G11B7/08529 ,  G11B7/08541

摘要： An optical disk reading apparatus having a carriage on which a tracking actuator and a photosensor unit are mounted and driven by a head actuator for moving a spot of a light beam in a direction traversing tracks on an optical disk and for detecting first position and second position signals indicative of the position of the spot on the tracks through addition and subtraction of the electric signals corresponding to changes in the quantities of light reflected from the tracks upon the movement of the spot and including circuitry for accurately placing the spot on a desired track of the disk even when the first and second position signals contained omissions.

摘要翻译： 一种光盘读取装置，具有滑架，跟踪致动器和光电传感器单元由磁头致动器安装和驱动，所述磁头致动器用于沿着在光盘上穿过轨道的方向移动光束的点，并且用于检测第一位置和第二位置 通过加上和减去对应于在光点移动时从轨道反射的光量的变化的电信号，指示光点在轨道上的位置的信号，并且包括用于将光点精确地放置在期望的轨道上的电路 磁盘即使第一和第二位置信号都含有遗漏。

公开(公告)号：US4887254A

公开(公告)日：1989-12-12

申请号：US172525

申请日：1988-03-24

申请人： Keiji Nakatsu ,  Katsuaki Kamitsu ,  Masaharu Ogawa

发明人： Keiji Nakatsu ,  Katsuaki Kamitsu ,  Masaharu Ogawa

IPC分类号： H04N5/85 ,  G11B7/085 ,  G11B19/20 ,  G11B21/12 ,  G11B21/22

CPC分类号： G11B19/20 ,  G11B7/08582

摘要： A retract device includes a signal instruction circuit for providing the number of tracks to be traversed, the access start instruction, and the retract instruction and the reference voltage generating circuit responsive to these instructions to provide the residual track number and the carriage moving signal and operates such that, immediately before the drive device is to stop operating a carriage having an optical head mounted thereon is moved by an access operation from a track to a first predetermined position according to the access start instruction, and is then moved from the first predetermined position to a second predetermined position according to the retract instruction at a predetermined reference speed.

公开(公告)号：US4955009A

公开(公告)日：1990-09-04

申请号：US184985

申请日：1988-04-22

申请人： Keiji Nakatsu ,  Masaharu Ogawa

发明人： Keiji Nakatsu ,  Masaharu Ogawa

IPC分类号： G11B7/085 ,  G11B21/08

CPC分类号： G11B7/08541

摘要： In an optical disk drive apparatus for driving an optical disk having tracks for recording information, an optical head focuses a light beam onto a spot on a track on the optical disk, and an actuator moves the optical head, thereby causing the spot of the light beam to move from its current track to a target track in order to access the target track. A track counter counts the tracks moved by the spot of the light beam. The counting of tracks is disabled for an interval at the start of each track access operation to prevent miscounting caused by jitter that occurs when initiating a track access operation.

公开(公告)号：US4788421A

公开(公告)日：1988-11-29

申请号：US863026

申请日：1986-05-14

申请人： Masaharu Ogawa ,  Keiji Nakatsu

发明人： Masaharu Ogawa ,  Keiji Nakatsu

IPC分类号： G11B7/085 ,  G11B7/09 ,  G01J1/20

CPC分类号： G11B7/0946 ,  G11B7/08529

摘要： A control apparatus comprises a linear actuator (49) which moves an optical head (37) having a photo detector (45) in a radial direction of an optical disk (33), a velocity detection circuit (57) which detects relative moving velocity of the optical head (37) to the optical disk (33) during track accessing, and a linear actuator drive control circuit (50) which controls the actuator (49) in response to the detected velocity. The velocity detection circuit (57) generates a digital signal which corresponds to a cycle of an RF output signal of the photo detector (45) and, in response to this digital signal, it further generates an analog signal, which corresponds to the inverse of the cycle of the RF signal, to be outputted as the relative moving velocity of the optical head (37).

摘要翻译： 控制装置包括线性致动器（49），其沿着光盘（33）的径向移动具有光检测器（45）的光学头（37），速度检测电路（57），其检测相对移动速度 轨道存取期间到光盘（33）的光头（37），以及响应于检测到的速度控制致动器（49）的线性致动器驱动控制电路（50）。 速度检测电路（57）产生对应于光检测器（45）的RF输出信号的周期的数字信号，并且响应于该数字信号，其进一步产生模拟信号，其对应于 RF信号的周期作为光头（37）的相对移动速度输出。