-
公开(公告)号：US4449177A
公开(公告)日：1984-05-15
申请号：US354099
申请日：1982-02-22
申请人： Yoshinori Kozai , Katsuo Kobari , Keiji Sakamoto
发明人： Yoshinori Kozai , Katsuo Kobari , Keiji Sakamoto
摘要： A discharging circuit for a power source device with a rectifier circuit used in an power source for driving a motor in which when the alternating current power source is turned off and the load is electrically separated, the voltage of a time constant selection circuit (22, 23) falls rapidly, the voltage across a diode (25) rises, a Schmitt circuit (24) is activated, the circuit consisted of a transistor (27) and a resistor (26) is conducted, and a smoothing capacitor (28) is discharged, and hence the heat generation at the resistor is decreased and the concern over unsafety due to delayed discharge of the capacitor is eliminated.
摘要翻译： PCT No.PCT / JP81 / 00142 Sec。 371日期1982年2月22日 102（e）1982年2月22日PCT申请1981年6月20日PCT公布。 第WO82 / 00070BC号公报 日本1982年1月7日。一种用于电源的电源装置的放电电路，其具有用于驱动电动机的电源，其中当交流电源关闭并且负载被电分离时，电压 时间常数选择电路（22,23）迅速下降，二极管（25）两端的电压升高，施密特电路（24）被激活，由晶体管（27）和电阻（26）组成的电路被导通， 平滑电容器（28）被放电，因此电阻器的发热减少，并且消除了由于电容器的延迟放电引起的不安全的担心。
-
公开(公告)号：US4680525A
公开(公告)日：1987-07-14
申请号：US728467
申请日：1985-05-02
申请人： Katsuo Kobari , Hiroshi Ishida
发明人： Katsuo Kobari , Hiroshi Ishida
CPC分类号： H02P21/00
摘要： The drive system of an induction motor wherein the exciting current command value I.sub.o of the induction motor (14) is held constant and the rotational speed thereof is caused to quickly respond to a command speed by the vector control circuit the induction motor (104) has exceeded a predetermined speed, an exciting current amplitude-controlling circuit (51) increases the exciting current command value in accordance with the rotational speed. The level of the driving supply voltage of the induction motor is sensed by a supply voltage output circuit (52), whereupon the exciting current amplitude-controlling circuit (51) is controlled so that the predetermined speed serving as a threshold value for changing the exciting current command value may be increased in accordance with the sensed level.
摘要翻译： 感应电动机的驱动系统，其中感应电动机（14）的励磁电流指令值Io保持恒定，并且使其转速快速响应于感应电动机（104）的矢量控制电路的指令速度 励磁电流幅度控制电路（51）根据转速增加励磁电流指令值。 感应电动机的驱动电源电压由电源电压输出电路（52）感测，于是激励电流振幅控制电路（51）被控制，使得作为阈值的预定速度用于改变激励 电流指令值可以根据所感测的电平而增加。
-
公开(公告)号：US4973959A
公开(公告)日：1990-11-27
申请号：US196200
申请日：1988-05-04
CPC分类号： H03M1/206 , G01D5/244 , G01D5/24404 , G01D5/24476 , H03M1/303
摘要： A digital pulse circuit receives parallel N digital signals, assuming N is an even integer equal to or greater than 4, the levels of the signals inverted every time a constant quantity of change in an objective quantity to be measured occurs, any phase differences between the successive signals of the signals about 1/N of the constant quantity; has a logic circuit which enables only two signals which can change state in due process corresponding to the next change of the objective quantity to be measured, to enter the next stage; and synchronizes each of the N digital signals by a clock pulse, to make any phase difference among the N digital signals equal to or more than a predetermined phase difference, and the remove the influence of noise superposed on the digital signals (FIG. 10). In addition, a digital pulse circuit mentioned above; synchronizes each of the N digital signals by a clock pulse; and further synchronizes each of the synchronized signals by the clock pulse, once again; and enables only two signals which can change their states in due process corresponding to the next change of the objective quantity to be measured, among the signals synchronized once, to enter the next stage; and when two of the once-synchronized signals have changed at the same time, maintains the two once-synchronized signals so as not to be synchronized twice, until one of the two signals returns to the state just before the change (FIG. 14).
摘要翻译： PCT No.PCT / JP87 / 00666 Sec。 371日期：1988年5月4日 102（e）日期1988年5月4日PCT提交1987年9月9日PCT公布。 第WO88 / 02104号公报 日期：1988年3月24日。数字脉冲电路接收并行N个数字信号，假设N是等于或大于4的偶数整数，每次待测量的目标量的恒定变化量反转信号的电平 发生信号的连续信号之间的任何相位差约为常数量的1 / N; 具有逻辑电路，其仅使得能够根据待测量的目标量的下一次变化而适当地改变状态的两个信号进入下一个阶段; 并且通过时钟脉冲使每个N个数字信号同步，使N个数字信号之间的任何相位差等于或大于预定相位差，并消除叠加在数字信号上的噪声的影响（图10） 。 另外，上述数字脉冲电路; 通过时钟脉冲使每个N个数字信号同步; 并再次同步每个同步信号的时钟脉冲; 并且在一次同步的信号中仅使两个信号能够在适当的处理中改变与待测量的目标量的下一个变化相对应的状态，以进入下一个阶段; 并且当两个同步信号中的两个同时改变时，保持两个一次同步的信号，以便不被同步两次，直到两个信号中的一个返回到刚刚改变之前的状态（图14） 。
-
公开(公告)号：US4908738A
公开(公告)日：1990-03-13
申请号：US233652
申请日：1988-07-08
申请人： Katsuo Kobari , Naoto Ota , Naoyuki Suzuki , Yuji Kanamori
发明人： Katsuo Kobari , Naoto Ota , Naoyuki Suzuki , Yuji Kanamori
CPC分类号： H05K7/1432 , H02M7/003 , H05K1/144
摘要： A motor drive unit used in controlling an AC motor which drives the spindle or feed shaft of a machine tool is suitable for automatic assembly in which a plurality of electrical components are mounted and wired. In accordance with the motor drive unit of the invention, an upper frame (2) supporting a printed circuit board (1) having electrical circuitry which employs control semiconductors, and a lower frame (4) for mounting a heat radiating device (5), which mounts a rectifier or the like, as well as a power resistor (6), are constructed of synthetic resin. A power board (3) on which power circuit components are connected by soldering is sandwiched between the two frames (2), (4) and has the components on the heat radiating device (5) and the power resistor (6) mounted and connected thereto by screws. The two frames (2), (4) are fastened together by screws (25).
摘要翻译： PCT No.PCT / JP87 / 00995 Sec。 371日期：1988年7月8日 102（e）日期1988年7月8日PCT提交1987年12月18日PCT公布。 出版物WO88 / 04879 日期1988年6月30日。用于控制驱动机床的主轴或进给轴的交流电动机的电机驱动单元适用于多个电气部件的安装和布线的自动组装。 根据本发明的电机驱动单元，支撑具有采用控制半导体的电路的印刷电路板（1）的上框架（2）和用于安装散热装置（5）的下框架（4） 安装整流器等以及功率电阻器（6）由合成树脂构成。 通过焊接将电源电路部件连接的电源板（3）夹在两个框架（2），（4）之间，并且具有安装和连接的散热装置（5）和功率电阻器（6）上的部件 通过螺丝。 两个框架（2），（4）通过螺钉（25）固定在一起。
-
公开(公告)号：US5225992A
公开(公告)日：1993-07-06
申请号：US269181
申请日：1989-08-24
申请人： Katsuo Kobari , Shinji Seki , Shunsuke Matsubara
发明人： Katsuo Kobari , Shinji Seki , Shunsuke Matsubara
CPC分类号： H02H6/005
摘要： An overcurrent detector realized by using a computer. The apparatus is provided with an overcurrent detector (5) which calculates the temperature rise .theta.(n) =K.sub.1 P(n)+K.sub.2 .theta.(n-1), based on a current (In) flowing in an electric machine, under the conditions that the machine has an electric resistance (r), the machine works in a known ambient temperature, the allowable temperature rise (.theta.(max)) of the machine is known, a first coefficient (K.sub.1) and a second coefficient (K.sub.2) are predetermined. The overcurrent detector (5) further compares the temperature rise (.theta.(n)) with a difference between the allowable temperature rise (.theta.(max)) of the machine and the ambient temperature at which the machine is used, and determines that the machine is in an overcurrent position, when the former exceeds the latter.
-
公开(公告)号：US4434393A
公开(公告)日：1984-02-28
申请号：US388926
申请日：1982-06-16
申请人： Katsuo Kobari , Hiroshi Ishida , Naoto Ota
发明人： Katsuo Kobari , Hiroshi Ishida , Naoto Ota
CPC分类号： H02P23/06
摘要： A control circuit for driving an induction motor wherein an AC voltage is converted into a direct current by a rectifying circuit and the direct current is converted into a signal having a variable voltage and frequency by a transistor inverter connected in parallel with a smoothing capacitor, and a regenerative circuit is connected in parallel with the inverter, and a circuit is provided for comparing the terminal voltage V.sub.C of the smoothing capacitor and a reference voltage V.sub.r when braking is to take place is disclosed. When condition V.sub.C .gtoreq.V.sub.r exists, the transistor inverter is disabled but the regenerative circuit is allowed to operate; when the condition V.sub.C
摘要翻译： 一种用于驱动感应电动机的控制电路，其中通过整流电路将AC电压转换为直流电，并且通过与平滑电容器并联连接的晶体管反相器将直流转换成具有可变电压和频率的信号，以及 再生电路与逆变器并联连接，并且提供了用于比较平滑电容器的端子电压VC和制动时的参考电压Vr的电路。 当条件VC> / = Vr存在时，晶体管反相器被禁止，但允许再生电路工作; 当存在条件VC
-
公开(公告)号：US4409648A
公开(公告)日：1983-10-11
申请号：US314468
申请日：1981-10-23
申请人： Katsuo Kobari , Yoshiaki Hachisuka
发明人： Katsuo Kobari , Yoshiaki Hachisuka
CPC分类号： H02M7/525 , H02M7/1626 , H02P7/293
摘要： An apparatus for preventing malfunctions in a phase control mechanism of the type in which the firing angle of thyristors in a thyristor bridge is controlled to regulate the rotational speed of a DC motor comprising the load of the thyristor bridge. Thyristor firing pulses are produced each time a rising analog speed command signal generated in response to the phases of a N-phase power supply intersects N-number of sawtooth signals. Immediately after the generation of each firing pulse, the thyristors are not supplied with firing pulses for a time interval at least equivalent to the thyristor commutation overlap time.
摘要翻译： 一种用于防止在晶闸管桥中的晶闸管的触发角被控制的相位控制机构中的故障的装置，以调节包括可控硅桥的负载的直流电动机的转速。 每当响应于N相电源的相位产生的上升的模拟速度指令信号与N个锯齿波信号相交时，产生晶闸管触发脉冲。 在产生每个点火脉冲之后，晶闸管不会被提供至少等于晶闸管换向重叠时间的时间间隔的点火脉冲。
-
公开(公告)号：US4305026A
公开(公告)日：1981-12-08
申请号：US123710
申请日：1980-02-22
申请人： Katsuo Kobari , Yoshiaki Hachisuka
发明人： Katsuo Kobari , Yoshiaki Hachisuka
CPC分类号： H02P7/2885
摘要： A device for driving a DC motor with feedback control provides a circuit for judging whether the motor is in acceleration or in deceleration and a circuit for switching the gain modification signal, and said switch circuit is controlled by the output signals of said judgement circuit.
摘要翻译： 用于驱动具有反馈控制的DC电动机的装置提供用于判断电动机是加速还是减速的电路和用于切换增益修正信号的电路，并且所述开关电路由所述判断电路的输出信号控制。
-
公开(公告)号：US4275342A
公开(公告)日：1981-06-23
申请号：US95077
申请日：1979-11-16
申请人： Shigeki Kawada , Katsuo Kobari , Hiroshi Ishida
发明人： Shigeki Kawada , Katsuo Kobari , Hiroshi Ishida
CPC分类号： H02H7/093 , Y10S388/903 , Y10S388/909
摘要： In a DC motor control apparatus for driving a DC motor in accordance with a signal of the difference between a revolving speed signal from a speed detector coupled with the DC motor and a command speed signal so as to drive the DC motor at a revolving speed indicated by the command speed signal, when a voltage to be applied to the DC motor and the revolving speed signal from the speed detector are both detected, the operation of the DC motor control apparatus is decided as normal, and when the voltage to the DC motor is detected but the revolving speed signal from the speed detector is not detected, the operation of the DC motor control apparatus is decided as abnormal and an alarm signal is produced.
摘要翻译： 在直流电动机控制装置中，根据来自与直流电动机相连的速度检测器的转速信号与指令速度信号之间的差的信号驱动直流电动机，以便以指示的转速驱动直流电动机 通过指令速度信号，当检测到施加到直流电动机的电压和来自速度检测器的转速信号都被检测到时，直流电动机控制装置的操作被正常地确定，并且当直流电动机的电压 被检测出来，但没有检测到来自速度检测器的转速信号，直流电动机控制装置的动作被判定为异常，产生了报警信号。
-
公开(公告)号：US4897544A
公开(公告)日：1990-01-30
申请号：US219542
申请日：1988-06-16
IPC分类号： G01D5/36 , H03K17/968 , H03M1/24 , H03M1/30
CPC分类号： G01D5/36 , H03K17/968 , H03M1/303
摘要： A light receiving element (1) and an operation transistor (3) are connected in series, a plurality of signal output transistors (5a, 5b) are current-miller-connected to the operation transistors (3) in parallel, and photoelectrically converted output signals (O.sub.1, O.sub.2) are separately applied to a plurality of circuits in parallel from the plurality of the signal output transistors (5a, 5b). As a result, in the plurality of the circuits which receive the photoelectrically converted output signals (O.sub.1, O.sub.2) in parallel to carry out predetermined processes, interference will not occur, the signals are processed correctly, the power consumption is reduced, and the speed of responsitivity is improved.
-
-
-
-
-
-
-
-
-
搜索结果
15 条记录 (耗时 0.02 秒)
