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    • 36. 发明授权
    • Crank angle detecting device for a multi-cylinder internal combustion
engine
    • 用于多缸内燃机的曲柄角检测装置
    • US4961410A
    • 1990-10-09
    • US324888
    • 1989-03-17
    • Masami MatsumuraMasahiro HayashiAtsushi Ueda
    • Masami MatsumuraMasahiro HayashiAtsushi Ueda
    • F02D45/00F02D41/34F02D41/36F02P7/077
    • F02D41/009F02D41/36F02P7/0775Y02T10/44
    • A crank angle detector includes a first generator 2 for sequentially generating a first signal including a plurality of first pulses corresponding to the number of engine cylinders in two crankshaft revolutions, and a second generator 3 for generating a second signal in two revolutions including a plurality of groups of second pulses, each group of second pulses having a condition which corresponds to a specific period of the first signal and which is different from those of the other groups. A cylinder discriminator 4 is connected to the first and second generators for discriminating the operating strokes of the respective cylinders by detecting a specific pulse condition of the second signal which occurs within a specific period of the first signal. In a preferred embodiment, each of the second pulses has a width less than that of each pulse of the first signal, and each group of second pulses has a total sum of rising and falling edges which is different from that of each of the other groups. Preferably, the crank angle signal has a period in which the first signal is alternatively at a low level or at a high level.
    • 曲柄角检测器包括:第一发生器2,用于顺序产生包括与两个曲轴转数中的发动机气缸数相对应的多个第一脉冲的第一信号;以及第二发生器3,用于产生包括多个 第二脉冲组,每组第二脉冲具有对应于第一信号的特定周期的条件,并且不同于其它组的条件。 气缸鉴别器4连接到第一和第二发生器,用于通过检测在第一信号的特定周期内发生的第二信号的特定脉冲条件来识别各个气缸的操作冲程。 在优选实施例中,每个第二脉冲的宽度小于第一信号的每个脉冲的宽度,并且每组第二脉冲具有不同于每个其它组的上升沿和下降沿的总和 。 优选地,曲柄角信号具有第一信号交替地处于低水平或高水平的时段。
    • 38. 发明授权
    • High-speed machining controller
    • 高速加工控制器
    • US4709198A
    • 1987-11-24
    • US868041
    • 1986-05-29
    • Kazutaka OgoMasahiro HayashiTakatoshi SuzukiKatsuiku HokaoAkio AsaiTakayuki Tsuruhashi
    • Kazutaka OgoMasahiro HayashiTakatoshi SuzukiKatsuiku HokaoAkio AsaiTakayuki Tsuruhashi
    • B23Q17/09B23Q15/12G05B19/4065G05B19/24
    • G05B19/4065G05B2219/37351
    • A high speed machining controller comprises an acoustic emission sensor which is installed in or near a machine for machining a work piece in a high speed and which detects acoustic emission generated during machining a work piece; a signal processing means which is composed of a band-pass filter for passing an element of a frequency band corresponding to the acoustic emission by inputting a signal outputted from the acoustic emission sensor, a rectification circuit for rectifying a signal outputted from said band-pass filter, a peak detection circuit for detecting peak values of the signal outputted from the rectification circuit, and a smoothing circuit for smoothing output signals of said peak detection circuit and for outputting a signal corresponding to the amplitude of the acoustic emission for the purpose of processing the output signal of the acoustic emission sensor to detect its amplitude; a cutting condition discrimination means for judging the cutting condition of a work piece by comparing a detected amplitude of the acoustic emission with a predetermined discrimination value for discriminating the cutting condition of said work piece; and a control means to instruct and control the machining condition including at least the feed speed of a machine tool on the basis of the cutting condition of the work piece.
    • 高速加工控制器包括安装在机器中或机器附近的声发射传感器,用于高速加工工件并检测在加工工件期间产生的声发射; 一个信号处理装置,它由带通滤波器组成,该带通滤波器用于通过输入从声发射传感器输出的信号通过与声发射相对应的频带的元素;整流电路,用于整流从所述带通输出的信号 滤波器,用于检测从整流电路输出的信号的峰值的峰值检测电路,以及平滑电路,用于平滑所述峰值检测电路的输出信号,并输出与用于处理的声发射的幅度对应的信号 声发射传感器的输出信号检测其幅度; 切割条件判别装置,用于通过将检测到的声发射的振幅与用于识别所述工件的切割条件的预定鉴别值进行比较来判断工件的切割状态; 以及控制装置,用于基于工件的切割条件指导和控制至少包括机床的进给速度的加工条件。