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    • 9. 发明授权
    • Apparatus for system control, especially ignition timing of internal
combustion engines
    • 用于系统控制的装置,特别是内燃机的点火正时
    • US4158350A
    • 1979-06-19
    • US793323
    • 1977-05-03
    • Heinz MollerJosef Wahl
    • Heinz MollerJosef Wahl
    • F02P5/155F02P5/04
    • F02P5/1555Y02T10/46
    • The controlled variable of a system, in particular the timing of an internal combustion engine, is changed on the basis of a set point signal by a closed control loop which alters the relative settings of the breaker points and the distributor shaft, for example. The set point is a single value related to a specific set of magnitudes of engine variables. When the engine exhibits this specific set of magnitudes, the control loop is closed and the engine timing is adjusted to the set point. At other times, the timing follows open-loop, forward control signals such as provided by vacuum advance mechanisms, flyweight governors, etc. The apparatus includes a locking mechanism for locking the relative position of the breaker plate after adjustment by the closed loop controller.
    • 例如,系统的受控变量,特别是内燃机的时间,基于通过闭合控制回路改变设定点信号,改变断路器点和分配器轴的相对设置。 设定点是与特定发动机变量大小有关的单一值。 当发动机呈现这种特定的大小时,控制回路闭合,并将发动机定时调整到设定值。 在其他时间,定时遵循诸如由真空提前机构,飞行调速器等提供的开环,前进控制信号。该装置包括用于在由闭环控制器调节之后锁定断路器板的相对位置的锁定机构。
    • 10. 发明授权
    • Circuit for multiplying two variables
    • 两个变量相乘的电路
    • US4125811A
    • 1978-11-14
    • US806876
    • 1977-06-15
    • LaVerne A. Caron
    • LaVerne A. Caron
    • F02P5/155G06G7/161H03K4/02H03K6/00H03K7/10H03K9/08
    • G06G7/161F02P5/1555H03K4/026H03K6/00H03K7/10Y02T10/46
    • A circuit for multiplying two variables wherein one variable is represented by the pulse width of the pulses of a variable pulse width, constant frequency rectangular waveform signal and the second variable is represented by the level of a variable amplitude signal. When the value of the first variable is zero, pulses of the rectangular waveform signal have a definite non-zero pulse width. An oscillator cicuit produces a reference rectangular waveform signal having a frequency equal to that of the first rectangular waveform signal. From these two rectangular waveform signals there is developed a third rectangular waveform signal having the same frequency but having the width of its pulses directly proportional to the value of the first variable so that the pulses are of zero width when the first variable is zero. A fourth rectangular waveform signal is developed from the third rectangular waveform signal and from said variable amplitude signal such that the pulse amplitude of said fourth rectangular waveform signal is proportional to the value of the second variable and the pulse width is directly proportional to the value of the first variable. The fourth rectangular waveform signal is passed through a low pass filter to produce a DC signal whose magnitude is directly proportional to the area of the output pulses of the fourth rectangular waveform signal and hence to the product of the two variables.