Step motor control
    1.
    发明授权
    Step motor control 失效
    步进电机控制

    公开(公告)号:US4734631A

    公开(公告)日:1988-03-29

    申请号:US887956

    申请日:1986-07-22

    IPC分类号: H02P8/00 H02P8/14 G05B19/40

    CPC分类号: H02P8/14

    摘要: A step motor control system which can control a step motor to rotate at a variable high speed like a brushless motor. A position signal indicating a position of a rotor of a step motor relative to a specific one of field windings is detected as a voltage signal which is successively compared with a reference voltage in order to detect a specific angular position of the rotor at which selective energization and deenergization of the field windings are started for a next stepping operation of the motor.The position signal may be extracted as a voltage signal from an electric current flowing through a last energized field winding by a resistor connected thereto. From the voltage signal, a back EMF induced in the field winding due to its self inductance is subtracted to detect a voltage position signal or EMF induced in the field winding by a permanent magnet of the rotor. The back EMF is produced by an electronic simulation means including an integrating circuit having a same time constant with the field winding.

    摘要翻译: 一种步进电动机控制系统,其可以控制步进电动机以可变高速度旋转,如无刷电动机。 作为与参考电压相继进行比较的电压信号,检测出表示步进电动机的转子相对于特定一个励磁绕组的位置的位置信号,以便检测转子的特定角位置, 并开始励磁绕组的断电以进行电动机的下一个步进操作。 位置信号可以由与其连接的电阻器流过最后通电的励磁绕组的电流作为电压信号提取。 从电压信号中,减去由于其自感而在励磁绕组中感应的反电动势,以检测通过转子的永磁体在励磁绕组中感应的电压位置信号或EMF。 反电动势由包括具有与励磁绕组相同的时间常数的积分电路的电子模拟装置产生。

    Driving device for a stepping motor
    2.
    发明授权
    Driving device for a stepping motor 失效
    步进电机驱动装置

    公开(公告)号:US4734632A

    公开(公告)日:1988-03-29

    申请号:US912057

    申请日:1986-09-26

    IPC分类号: H02P8/00 H02P8/14 G05B19/40

    CPC分类号: H02P8/14

    摘要: A driving device for a stepping motor wherein detection of a position of the rotor of a stepping motor can be effected accurately without the necessity of adjustments of various elements. The device detects a current flow in a field winding of an energized phase and compares it with a simulated saturation curve to detect a back EMF induced in the winding to find a current position of the rotor of the motor.The simulated saturation curve is produced by energizing the winding with a low voltage, measuring current flows in the winding as voltage signals at three different points of time, and calculating several data indicating a saturation curve from the voltage signals. The data are stored in memory and recalled one after another to produce a corresponding voltage when the field winding is energized.

    摘要翻译: 一种用于步进电动机的驱动装置,其中可以精确地实现对步进电动机的转子的位置的检测,而不需要调整各种元件。 该装置检测通电相的励磁绕组中的电流,并将其与模拟的饱和曲线进行比较,以检测绕组中感应的反电动势,以找到电动机的转子的当前位置。 模拟饱和曲线是通过以低电压激励绕组产生的,测量电流在绕组中作为电压信号在三个不同的时间点流动,并计算几个数据,表示电压信号的饱和曲线。 数据存储在存储器中,并在励磁绕组通电时相继调出相应的电压。

    Method and apparatus of selecting needles of a knitting machine
    3.
    发明授权
    Method and apparatus of selecting needles of a knitting machine 失效
    针织机针的选择方法及装置

    公开(公告)号:US4100768A

    公开(公告)日:1978-07-18

    申请号:US814534

    申请日:1977-07-11

    IPC分类号: D04B15/66 D04B7/00

    CPC分类号: D04B15/66

    摘要: A new method of selecting knitting needles of a straight knitting machine by scanning a program carrier; producing sampling pulses; taking electric signals obtained as a result of said scanning; storing in a temporary storage a preset number of digital electric signals; reading out, in a cyclic manner, said preset number of digital electric signals in response to carriage movement; and selecting needles according to contents of said preset number of digital electric signals to be cyclically read out, is provided. An improved straight knitting machine to put the new method into practice is also provided. With this new method and the improved straight knitting machine, it has become possible to simplify a recording of the profile indicating the unit pattern and to knit a pattern having a desired profile and size.

    摘要翻译: 通过扫描程序载体来选择直线编织机的织针的新方法; 产生采样脉冲; 获取作为所述扫描的结果获得的电信号; 在临时存储器中存储预设数量的数字电信号; 以循环的方式读出响应于滑架运动的预设数量的数字电信号; 并且提供根据所述预设数量的数字电信号的内容来循环读出的针。 还提供了一种改进的直线针织机来实施新方法。 利用这种新方法和改进的直线针织机,可以简化表示单位图案的轮廓的记录,并且可以编织具有期望的轮廓和尺寸的图案。

    Electronic typewriter
    4.
    发明授权
    Electronic typewriter 失效
    电子打字机

    公开(公告)号:US4480931A

    公开(公告)日:1984-11-06

    申请号:US356382

    申请日:1982-03-09

    摘要: An electronic typewriter which provides for significant simplification of machine operations. The typewriter includes automatic error correcting function associated with electronic controls and a memory. A series of text data which have been deleted during an incessant error correcting operation are stored in a specially provided buffer memory from which they can be recalled upon depression of a print initiating key for causing the corresponding text to be printed automatically. An LED indicates that the current print line contains printed characters which can be erased by such automatic correcting operation. The typewriter further provides for simplified indentation and a novel carrier return mode.

    摘要翻译: 一种电子打字机,可显着简化机器操作。 打字机包括与电子控制和存储器相关联的自动纠错功能。 在不间断的纠错操作中被删除的一系列文本数据被存储在专门提供的缓冲存储器中,在按下打印启动键以便自动打印相应的文本时,可缓存它们。 LED指示当前打印行包含可通过这种自动校正操作擦除​​的打印字符。 打字机进一步提供简化的缩进和新的载体返回模式。

    Knitting machine coupled with the program reading device
    5.
    发明授权
    Knitting machine coupled with the program reading device 失效
    编织机与程序读取装置相结合

    公开(公告)号:US4085597A

    公开(公告)日:1978-04-25

    申请号:US737433

    申请日:1976-11-01

    IPC分类号: D04B15/66 D04B7/00

    CPC分类号: D04B15/66

    摘要: A new type of hand-operated knitting machine having a device for reading knitting programs is provided. Unlike the conventional reading device-equipped knitting machine, the reading device is not mounted on its carriage. Therefore, although the scanning operation of the reading device is associated with the start of the carriage movement, it is not disordered by irregular carriage handlings, thus realizing proper reproduction of the knitting pattern.

    摘要翻译: 提供了一种具有用于读取编织程序的装置的新型手动编织机。 与传统的装备有读取装置的针织机不同,读取装置不安装在其托架上。 因此,尽管读取装置的扫描操作与托架运动的开始相关联,但是它不会由于不规则的托架处理而无序,从而实现编织图案的适当再现。

    Control device in a knitting machine
    6.
    发明授权
    Control device in a knitting machine 失效
    针织机中的控制装置

    公开(公告)号:US4079601A

    公开(公告)日:1978-03-21

    申请号:US803884

    申请日:1977-06-06

    IPC分类号: D04B15/86 D04B15/66 D04B7/00

    CPC分类号: D04B15/66

    摘要: An input device for providing signals for controlling a knitting machine. The device includes a mechanical information storage means and a switch means responsive to the contents of the storage means to provide a signal corresponding to the stored information. The storage means is disposed for operation either manually by a machine operator or electromechanically in response to instructions provided by other components of the machine. The device is incorporated in a program reading apparatus to specify feeding direction of the program carrier on the knitting machine.

    摘要翻译: 一种用于提供用于控制针织机的信号的输入装置。 该装置包括机械信息存储装置和响应于存储装置的内容的开关装置,以提供对应于所存储的信息的信号。 存储装置被设置为由机器操作者手动操作或响应于机器的其他部件提供的指令而机电地操作。 该装置被结合在程序读取装置中以指定针织机上的程序载体的馈送方向。

    Method and apparatus for providing patterning instructions in a knitting
machine
    7.
    发明授权
    Method and apparatus for providing patterning instructions in a knitting machine 失效
    用于在针织机中提供图案化指令的方法和装置

    公开(公告)号:US4078401A

    公开(公告)日:1978-03-14

    申请号:US799279

    申请日:1977-05-23

    CPC分类号: D04B15/66

    摘要: A method and apparatus for providing patterning instructions in a knitting machine by reading a program carrier and converting the readings to digital signals to be stored in a memory means. A manually operable member cooperating with the reading means allows the instructions to be recalled from memory to be selectively determined for controlling for the knitting operation.

    摘要翻译: 一种用于通过读取程序载体并将读数转换成存储在存储装置中的数字信号在针织机中提供图案化指令的方法和装置。 与读取装置协作的可手动操作的构件允许从存储器调用指令以选择性地确定用于编织操作的控制。