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    • 1. 发明授权
    • Pulse generator in storage drives
    • 存储驱动器中的脉冲发生器
    • US4651241A
    • 1987-03-17
    • US529018
    • 1983-09-02
    • Johann von der HeideErnst-Moritz KornerEdgar MullerRolf Muller
    • Johann von der HeideErnst-Moritz KornerEdgar MullerRolf Muller
    • G11B5/55G11B15/18G11B19/20G11B19/28G11B33/12G11B5/012
    • G11B33/121G11B15/1808G11B19/20G11B19/28G11B5/5526
    • Device for a drive for storage media for the generation of at least one index pulse per revolution of a rotating element with a generator, which, during operation, for each revolution of the rotating component, generates at least one signal pulse that alternates once between two polarities, and with an evaluating circuit activated by these alternating signal pulses to generate the index pulses at its output. The evaluating circuit includes a comparator with asymmetrical hysteresis with two inputs and one output, between the two inputs of which comparator the output signal of the generator lies, and the hysteresis of which is tuned to the generator output signal such that the comparator output sharply changes from a first to a second potential when the amplitude of the signal pulse at a preset polarity exceeds a preset switching voltage value, and sharply returns from the second to the first potential when the signal pulse passes through its zero crossing from the preset to the opposite polarity.
    • 用于存储介质的驱动器的装置,用于在具有发电机的旋转元件的每转一周产生至少一个索引脉冲,其在操作期间对于旋转部件的每次旋转产生至少一个在两个之间交替一次的信号脉冲 极性,以及由这些交变信号脉冲激活的评估电路,以在其输出端产生索引脉冲。 评估电路包括具有两个输入和一个输出的具有不对称滞后的比较器,其两个输入之间的比较器产生器的输出信号位于其上,其滞后被调谐到发生器输出信号,使得比较器输出急剧变化 当预设极性的信号脉冲的幅度超过预设的开关电压值时,从第一电位到第二电位,并且当信号脉冲从预置到相反的过零点时从第二电位急剧返回到第一电位 极性。
    • 7. 发明授权
    • Speed control for a rotary machine
    • 旋转机器的速度控制
    • US4337424A
    • 1982-06-29
    • US195862
    • 1980-10-10
    • Heinrich CapJohann von der HeideRolf Muller
    • Heinrich CapJohann von der HeideRolf Muller
    • H02P6/06H02P7/288H02P5/16
    • H02P7/2885H02P6/06Y10S388/91Y10S388/915Y10S388/916
    • A first capacitor is discharged with every pulse of a train of pulses of a frequency proportional to the actual speed of a rotary machine under control and is charged up during intervals between these pulses. The voltage of the first capacitor provides a signal to a threshold circuit which operates to provide a second signal whenever the voltage of the first capacitor exceeds a predetermined voltage which may be set in order to set the speed at which the machine is to be controlled. During the presence of the second signal a second capacitor is charged, beginning at a predetermined voltage, preferably zero. The regulating magnitude for the machine to be controlled is derived from the voltage of the second capacitor either directly or indirectly through a controller circuit and a power stage. The circuit is particularly useful for control of the speed of machines that run slowly or can conveniently provide only relatively few speed-indicating pulses per revolution.
    • 第一电容器以与控制的旋转机器的实际速度成比例的频率脉冲串的每个脉冲放电,并且在这些脉冲之间的间隔期间被充电。 第一电容器的电压向阈值电路提供信号,该阈值电路每当第一电容器的电压超过预定的电压而工作时提供第二信号,该电压可以被设置以便设定机器的控制速度。 在存在第二信号期间,第二电容器被充电,从预定电压开始,优选为零。 要控制的机器的调节幅度通过控制器电路和功率级直接或间接地从第二电容器的电压得到。 该电路对于控制缓慢运行的机器的速度或每转可以方便地提供相对较少的速度指示脉冲特别有用。