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    • 1. 发明授权
    • Digitally controlled acceleration and deceleration system
    • 数控加减速系统
    • US4250438A
    • 1981-02-10
    • US884226
    • 1978-03-07
    • Fumio Onoda
    • Fumio Onoda
    • G05B19/416G05B13/00
    • G05B19/416
    • A digitally controlled acceleration and deceleration system in which the goal velocity applied to the object in the acceleration mode and the deceleration mode changes linearly, instead of the flat goal velocity, thus, the acceleration and/or deceleration applied to the object to be controlled in the feedback loop becomes flat, and the acceleration time and/or deceleration time is reduced. The outputs of the variable frequency pulse generator and the fixed frequency pulse generator are combined together to provide said goal velocity, and the number of the sum of two pulse generators is utilized as a command position for the movement of the object.
    • 一种数字控制的加速和减速系统,其中在加速模式和减速模式下施加到物体的目标速度线性地改变,而不是平坦的目标速度,因此,施加到要控制的对象的加速度和/或减速度 反馈环路变得平坦,并且减小加速时间和/或减速时间。 可变频率脉冲发生器和固定频率脉冲发生器的输出组合在一起以提供所述目标速度,并且使用两个脉冲发生器的和的数量作为对象运动的指令位置。
    • 3. 发明授权
    • System for interpolating an arc for a numerical control system
    • 用于内插数字控制系统的电弧的系统
    • US4243924A
    • 1981-01-06
    • US916225
    • 1978-06-16
    • Fumio OnodaYutaka Kakizoe
    • Fumio OnodaYutaka Kakizoe
    • G05B19/4103G06F17/17G05B19/25
    • G05B19/4103
    • The coordinates (X.sub.n+1 Y.sub.n+1) of an arc to be traced at time t.sub.n+1 are preliminary calculated using the coordinates (X.sub.n Y.sub.n) at time t.sub.n, the radius (r) of the arc and a specified length l.sub.n during the time t.sub.n+1 -t.sub.n, thus the number of the calculations required for tracing an arc is considerably reduced and a low speed digital element which is cheap can be utilized in the present arc interpolation system. The formula for obtaining the coordinates is;X.sub.n+1 =X.sub.n +Y.sub.n .multidot.l.sub.n r-X.sub.n .multidot.l.sub.n.sup.2 /2r.sup.2Y.sub.n+1 =Y.sub.n -X.sub.n .multidot.l.sub.n /r-Y.sub.n .multidot.l.sub.n.sup.2 /2r.sup.2The asymptotic change of the above formulae and the apparatus according to the asymptotic formulae is also possible.
    • 使用时刻tn的坐标(Xn Yn),圆弧的半径(r)和规定的长度ln,在时刻tn + 1处追踪的弧的坐标(Xn + 1Yn + 1) 时间tn + 1-tn,因此用于跟踪电弧所需的计算次数大大减少,并且在当前的电弧插值系统中可以使用廉价的低速数字元件。 获得坐标的公式为; Xn + 1 = Xn + Ynxlnr-Xnxln2 / 2r2 Yn + 1 = Yn-Xnxln / r-Ynxln2 / 2r2上述公式的渐近变化和根据渐近公式的装置也是可能的。