-
公开(公告)号：US5959418A
公开(公告)日：1999-09-28
申请号：US18301
申请日：1998-02-05
申请人： Makoto Gotou
发明人： Makoto Gotou
IPC分类号： H02M7/5387 , H02P6/08 , H02P6/10 , H02P1/00
CPC分类号： H02P6/10 , G11B19/2009 , G11B19/28 , H02M7/53875 , H02M2001/0012
摘要： As shown in FIG. 9, a switching control part 310 detects voltage drops of FET power transistors 81 to 83, and outputs a switching control signal Vd responding with a modulated signal changed in synchronization with a movement of a motor, and a detected operation voltage. The switching operation of a switching transistor 61 is controlled responding with the switching control signal Vd, so that a converted DC voltage of a voltage converting part 52 is controlled. The converted DC voltage of the voltage converting part is supplied to power amplifying parts 11 to 17. The power amplifying parts configured by FET power current-mirror circuits analoguely alter current paths from the converted DC voltage of the voltage converting part to three-phase windings 2, 3, and 4, whereby pulsation of drive currents I1, I2, and I3 to the windings is reduced and a motor vibration is decreased in level.
摘要翻译： 如图所示。 如图9所示，切换控制部310检测FET功率晶体管81〜83的电压降，并且输出与电动机的移动同步变化的调制信号所响应的开关控制信号Vd以及检测到的工作电压。 根据开关控制信号Vd控制开关晶体管61的开关动作，控制电压变换部52的转换后的直流电压。 电压转换部分的转换的直流电压被提供给功率放大部分11至17.由FET功率电流镜电路构成的功率放大部件将电压转换部分的转换的直流电压的电流路径模拟地改变为三相绕组 如图2,3和4所示，由此使绕组的驱动电流I1，I2和I3的脉动减小，并且电机的振动水平降低。
-
公开(公告)号：US5490017A
公开(公告)日：1996-02-06
申请号：US112657
申请日：1993-08-27
IPC分类号： G11B15/18 , G11B15/467 , G11B15/48
CPC分类号： G11B15/4678 , G11B15/1808
摘要： A signal reproducing apparatus, which reproduces data from a tape in which data and a pilot signal for tracking have been recorded In oblique tracks, includes a tape driver for running the tape in the longitudinal direction, a rotary head for rotating and scanning the tape to produce reproduction signals, a reference generator for generating a reference signal which Is the rotation standard of the rotary head, a tracking error detector for producing a tracking error signal from the pilot signal contained in the reproduction signals, and a timing controller for controlling the start timing of tape running of the tape driver with respect to the reference signal, on the basis of the tracking error signal and reference signal in the stopped state of tape running.
摘要翻译： 一种信号再现装置，其中记录了用于跟踪的数据和导频信号已被记录的磁带的数据。在斜轨道中，包括用于在纵向方向上运行磁带的磁带驱动器，用于旋转和扫描磁带的旋转磁头 产生再现信号，用于产生作为旋转磁头的旋转标准的参考信号的参考发生器，用于从包含在再现信号中的导频信号产生跟踪误差信号的跟踪误差检测器，以及用于控制开始的定时控制器 基于在磁带运行的停止状态下的跟踪误差信号和参考信号，磁带驱动器相对于参考信号的磁带运行的定时。
-
公开(公告)号：US5377295A
公开(公告)日：1994-12-27
申请号：US785331
申请日：1991-11-01
申请人： Eiji Ueda , Akihiko Nakamura , Makoto Gotou
发明人： Eiji Ueda , Akihiko Nakamura , Makoto Gotou
CPC分类号： H02P23/16 , Y10S388/902
摘要： Disclosed is a speed controller of a motor which comprises a rotation sensor for generating an A.C. signal having a period in accordance with a rotating speed of a motor; speed detection device for effecting detection operations a plurality of times per round of the motor by the A.C. signal of the rotation sensor; compensation device for generating a control signal on the basis of a detection signal of the speed detection device; and driving device for driving the motor in accordance with the control signal of the compensation device; wherein the compensation device includes rotation error detection device for obtaining a rotation error responsive to the detection signal of the speed detection device; memory device for storing a memory value; memory output value generation device for generating a memory output value by the use of the memory value of the memory device; filter device for obtaining a calculation error from the rotation error; renewing and storing device for renewing and storing substantially sequentially the memory value of the memory device by a renewed value corresponding to a value obtained by calculating and synthesizing the calculation error and the memory output value whenever the speed detection device effects Q times detection operations; and control signal generation device for generating a control signal responsive to the rotation error of the memory output value.
摘要翻译： 公开了一种电动机的速度控制器，其包括用于产生具有根据电动机的转速的周期的交流信号的旋转传感器; 速度检测装置，用于通过旋转传感器的交流信号来实现每一周电动机的多次检测操作; 补偿装置，用于根据速度检测装置的检测信号产生控制信号; 以及用于根据补偿装置的控制信号驱动马达的驱动装置; 其中所述补偿装置包括响应于所述速度检测装置的检测信号而获得旋转误差的旋转误差检测装置; 用于存储存储器值的存储器件; 存储器输出值生成装置，用于通过使用存储器件的存储器值来产生存储器输出值; 用于从旋转误差获得计算误差的过滤装置; 更新和存储装置，用于当速度检测装置执行Q次检测操作时，基本顺序地更新和存储与存储装置的存储器值相对应的更新值，该值对应于通过计算和合成计算误差和存储器输出值而获得的值; 以及响应于存储器输出值的旋转误差产生控制信号的控制信号产生装置。
-
公开(公告)号：US5313338A
公开(公告)日：1994-05-17
申请号：US865584
申请日：1992-04-09
申请人： Kei Ichikawa , Haruo Isaka , Yoshio Sakakibara , Makoto Gotou
发明人： Kei Ichikawa , Haruo Isaka , Yoshio Sakakibara , Makoto Gotou
IPC分类号： G11B15/467 , G11B27/032 , G11B27/036 , G11B27/10 , G11B27/13 , G11B27/30 , G11B5/584
CPC分类号： G11B15/4677 , G11B15/4678 , G11B27/036 , G11B27/13 , G11B27/3009 , G11B2220/216 , G11B2220/90 , G11B2220/913 , G11B27/032 , G11B27/10
摘要： An editing apparatus for use with a tape-form recording medium is provided in which, according to a positioning signal and a tracking pilot signal multiplex-recorded into the first recording area of each track of the recording medium which consists of a plurality of recording areas separated from each other by gaps, a pilot sampling signal for determining the timing of sampling and an editing timing signal for determining the recording location in a desired recording area following the first recording area are produced. After the tracking control is executed through sampling the tracking pilot signals from adjacent tracks at the timing of the pilot sampling signal, a data signal is recorded into the desired recording area after the first recording area according to the editing timing signal.
摘要翻译： 提供了一种与带式记录介质一起使用的编辑装置，其中根据多路复用记录在由多个记录区域组成的记录介质的每个轨道的第一记录区域中的定位信号和跟踪导频信号 通过间隙彼此分离，产生用于确定采样定时的导频采样信号和用于确定跟随第一记录区域的期望记录区域中的记录位置的编辑定时信号。 在通过在导频采样信号的定时对来自相邻磁道的跟踪导频信号进行跟踪控制，根据编辑定时信号将数据信号记录在第一记录区之后的期望记录区域中。
-
公开(公告)号：US4933834A
公开(公告)日：1990-06-12
申请号：US182892
申请日：1988-04-18
申请人： Makoto Gotou , Eiji Ueda
发明人： Makoto Gotou , Eiji Ueda
CPC分类号： H02P23/0077 , H02P6/08
摘要： A control system has a detecting block for obtaining a detected signal corresponding to a controlled variable of a controlled system, and a controlling block for supplying the controlled system with a control signal according to the detected signal. The controlling block includes an error signal producing block for producing an error signal from the detected signal at intervals of a detecting period of time, a memorizing block for storing a plurality of memorized values corresponding to the error signal, and a control signal producing block for producing the control signal by mixing the error signal with one or more of the memorized values. The memorizing block renews the memorized values sequentially and periodically at intervals of a renewing cycle period of time proportional to the detecting period, each with a mixed value computed from the error signal and one or more of the memorized values having been renewed at intervals of L renewing cycle periods, where L is an integer at least equal to 2. The controlling block also includes an operation selecting block for selecting a control operation, and a position detecting block for detecting a physical movement of the controlled system. The position detecting block obtains a stored position of the memorized value corresponding to a physical position of the controlled system so as to utilize the memorized values promptly and correctly when the operation selecting block selects the control operation using the memorizing block.
-
公开(公告)号：US4491770A
公开(公告)日：1985-01-01
申请号：US409103
申请日：1982-08-18
申请人： Makoto Gotou
发明人： Makoto Gotou
CPC分类号： H02P6/06
摘要： In a brushless DC motor having a magnet (i.e.--a field flux generating means) and multiphase coils, a current is distributed from a DC voltage source to the multiphase coils by selectively activating a plurality of output transistors according to a set of output signals of a position detector. A distributor selectively activates the output transistors according to the output signals of the position detector. A command signal generator generates a command signal, and a low-pass filter is connected between the command signal generator and the distributor. A voltage detector detects voltage drops across the output transistors during each activated period and changes its output signal corresponding to the detected voltage drops when at least one of the voltage drops across the output transistors is smaller than a predetermined voltage. The input signal of the low-pass filter is corrected according to the output signal of the voltage detector, and the current supplied to the multiphase coils is decreased so as to prevent the output transistors from saturating. Thus, a current ripple which causes mechanical vibration and sounds can be effectively reduced.
摘要翻译： 在具有磁体（即场磁通发生装置）和多相线圈的无刷直流电动机中，通过根据一组输出信号选择性地激活多个输出晶体管，从DC电压源向多相线圈分配电流 位置检测器。 分配器根据位置检测器的输出信号选择性地激活输出晶体管。 命令信号发生器产生命令信号，并且在命令信号发生器和分配器之间连接一个低通滤波器。 电压检测器在每个激活的周期期间检测输出晶体管上的电压降，并且当输出晶体管两端的至少一个电压降小于预定电压时，改变其对应于检测到的电压降的输出信号。 根据电压检测器的输出信号来校正低通滤波器的输入信号，并且降低提供给多相线圈的电流，以防止输出晶体管饱和。 因此，可以有效地减少引起机械振动和声音的电流纹波。
-
公开(公告)号：US07110206B2
公开(公告)日：2006-09-19
申请号：US11212451
申请日：2005-08-26
申请人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
发明人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
IPC分类号： G11B15/46
CPC分类号： H02P6/22 , H02P2209/07
摘要： A brushless motor has first and second power transistors which form current paths to three-phase windings so as to rotate a rotor. A position detecting part produces a position signal in response to a rotation of the rotor. An activation operation block controls active operation of the first and second power transistors in response to the position signal. The activation operation block includes a starting operation part which comprises an initial phase setting part, phase changing part and a phase correcting part. The initial phase setting part sets an initial phase of drive signals to the three-phase windings in response to the level of the position signal at the timing of a start signal. The phase changing part changes sequentially the phase of the drive signals to the three-phase windings in the positive direction in response to time. The phase correcting part corrects the phase of the drive signals to the three-phase windings in response to the occurrence of the rising and falling edges of the position signal. Therefore, the brushless motor with reduced position sensor can stably start the rotation of the rotor by using one position signal of one position sensor.
-
公开(公告)号：US20060097674A1
公开(公告)日：2006-05-11
申请号：US10530442
申请日：2003-10-22
申请人： Keiji Nishihara , Hideo Nobekawa , Hideaki Mori , Makoto Gotou
发明人： Keiji Nishihara , Hideo Nobekawa , Hideaki Mori , Makoto Gotou
IPC分类号： H02P7/06
CPC分类号： H02P6/182
摘要： A motor driver drives a motor composed of a rotor and plural-phase windings that generate a magnetic field for rotating the rotor, including: a plurality of transistors that operate as switches for supplying current to the windings; a position detector operable to detect a rotational position of the rotor, based on a terminal voltage of each winding; and a switching controller operable to have performed a switching method to turn the transistors to an ON state or to an OFF state for controlling the rotor at the predetermined speed by means of the position detector, wherein the switching controller further controls so as to force each of the transistors into the OFF state for a predetermined duration in a predetermined cycle, and the position detector detects only while the switching controller forcedly keeps the transistor in the OFF state.
-
公开(公告)号：US06958877B2
公开(公告)日：2005-10-25
申请号：US10329849
申请日：2002-12-26
申请人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
发明人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
CPC分类号： H02P6/22 , H02P2209/07
摘要： A brushless motor has first and second power transistors which form current paths to three-phase windings so as to rotate a rotor. A position detecting part produces a position signal in response to a rotation of the rotor. An activation operation block controls active operation of the first and second power transistors in response to the position signal. The activation operation block includes a starting operation part which comprises an initial phase setting part, phase changing part and a phase correcting part. The initial phase setting part sets an initial phase of drive signals to the three-phase windings in response to the level of the position signal at the timing of a start signal. The phase changing part changes sequentially the phase of the drive signals to the three-phase windings in the positive direction in response to time. The phase correcting part corrects the phase of the drive signals to the three-phase windings in response to the occurrence of the rising and falling edges of the position signal. Therefore, the brushless motor with reduced position sensor can stably start the rotation of the rotor by using one position signal of one position sensor.
摘要翻译： 无刷电动机具有第一和第二功率晶体管，其形成到三相绕组的电流路径，以使转子旋转。 位置检测部分响应于转子的旋转产生位置信号。 激活操作块响应于位置信号控制第一和第二功率晶体管的有效操作。 激活操作块包括启动操作部分，其包括初始相位设置部分，相位改变部分和相位校正部分。 初始相位设置部分响应于在起始信号的定时处的位置信号的电平，将驱动信号的初始相位设置到三相绕组。 相位变化部根据时间顺序地将驱动信号的相位向正方向改变为三相绕组。 响应于位置信号的上升沿和下降沿的发生，相位校正部分将驱动信号的相位校正到三相绕组。 因此，具有减小位置传感器的无刷电动机可以通过使用一个位置传感器的一个位置信号来稳定地开始转子的旋转。
-
公开(公告)号：US06566827B2
公开(公告)日：2003-05-20
申请号：US10005955
申请日：2001-11-08
申请人： Makoto Gotou , Masaaki Ochi , Hideaki Mori , Shingo Fukamizu , Susumu Yamamoto
发明人： Makoto Gotou , Masaaki Ochi , Hideaki Mori , Shingo Fukamizu , Susumu Yamamoto
IPC分类号： H02K2300
摘要： In a disk drive apparatus of the present invention, power transistors of a power supplying part execute high-frequency switching operation and form current paths to three-phase windings so as to rotate a disk, a position detecting part produces a position signal which responds with terminal voltages of the three-phase windings, an activation operation part controls active periods of the power transistors in response to an output signal of the position detecting part, a commanding part produces a command signal in response to an output pulse signal of the position detecting part, and a switching operation block produces a switching pulse signal in response to a comparison result of a current detection signal with the command signal. The activation operation part produces a slew-rate switching signal which responds with the switching pulse signal, and causes at least a power transistor of the power supplying part to follow the slew-rate switching signal, thereby executing high-frequency switching of the power transistor in response to the slew-rate switching signal.
-
-
-
-
-
-
-
-
-
搜索结果
78 条记录 (耗时 0.031 秒)
