公开(公告)号：US20030215100A1

公开(公告)日：2003-11-20

申请号：US10436075

申请日：2003-05-13

Applicant: Ishida Co., Ltd.

Inventor： Takashi Kimura ,  Masayoshi Nakajima ,  Shuuji Murata ,  Yukio Wakasa ,  Kazuhiro Suhara

IPC: A61F011/06 ,  G10K011/16 ,  H03B029/00

CPC classification number: H03H17/025 ,  G01G3/147 ,  G01G23/10 ,  H03H17/0294

Abstract: A noise canceling apparatus (1) comprises an amplifier (10) for amplifying a measured signal (ms) outputted from a measuring device (3), an analog filter (11), an ADC (12), a digital filter (14), a coefficient control section (13), and a data input section (15). The digital filter (14) is a notch filter for attenuating a frequency component of a quantitative signal D(n) outputted from the ADC (12) at a plurality of notches (stop bands). A transfer function of the digital filter (14) is expressed by the product of a plurality of factors each having a root that corresponds to each one of the plurality of notches. The coefficient control section (13) changes a frequency component of a root corresponding to a notch selected from the plurality of notches, and thereafter, expands in a polynomial the transfer function of the reconstructed digital filter (14). On the basis of the polynomial thereby obtained, a new series of filter coefficients is calculated. A filter characteristic is controlled in such a manner that it conforms to a frequency variation of a fixed-period vibration noise, whereby the fixed-period vibration noise that varies in frequency is attenuated with a high degree of precision.

Abstract translation: 噪声消除装置（1）包括用于放大从测量装置（3）输出的测量信号（ms）的放大器（10），模拟滤波器（11），ADC（12），数字滤波器（14）， 系数控制部（13）和数据输入部（15）。 数字滤波器（14）是用于衰减在多个凹口（停止频带）处从ADC（12）输出的定量信号D（n）的频率分量的陷波滤波器。 数字滤波器（14）的传递函数由多个因子的乘积表示，每个因子各自具有与多个凹口中的每一个相对应的根。 系数控制部（13）改变与从多个切口中选择的切口对应的根的频率分量，然后以多项式扩大重构的数字滤波器（14）的传递函数。 根据得到的多项式，计算出一系列新的滤波器系数。 控制滤波器特性使其符合固定周期振动噪声的频率变化，由此频率变化的固定周期振动噪声以高精度衰减。

公开(公告)号：US20020088650A1

公开(公告)日：2002-07-11

申请号：US10038807

申请日：2002-01-08

Applicant: ISHIDA CO., LTD.

Inventor： Shuuji Murata ,  Kazuhisa Chimura

IPC: G01G013/00

CPC classification number: G01G19/393

Abstract: The combination weighing apparatus is an apparatus that conducts combination weighing of articles based upon weight data from a plurality of weight hoppers, and is comprised of a plurality of supply buckets that supply articles to any of a plurality of weighing hoppers, a rotation mechanism that rotates the supply buckets so that they move along an arrangement of the weighing hoppers in a weighing area, and a control computer. The control computer controls the supply of articles from the supply buckets inside the weighing area to the weighing buckets, and from amongst the plurality of weighing hoppers that request a supply of articles, priority is given to the weighing buckets that are downstream in the direction of rotation, and article supply takes place. In a combination weighing apparatus that supplies articles from supply buckets that rotates with respect to weighing hoppers, preventing difficult situations such as articles being supplied to predetermined weighing hoppers, and improving the accuracy of combination weighing.

Abstract translation: 组合称重装置是根据来自多个重量料斗的重量数据进行物品的组合称重的装置，并且由多个供给斗构成，所述供给斗将物品供给到多个计量料斗中的任一个，旋转机构 供应桶使得它们沿称重料斗的配置移动到称重区域中，以及控制计算机。 控制计算机控制从称重区域内的供应桶到称重桶的物品供应，以及从请求供应物品的多个计量料斗之间提供物品，优先考虑在下游方向上的称重桶 旋转和物品供应。 在从相对于计量料斗旋转的供给斗中供给物品的组合称重装置中，防止供给到规定的计量料斗的物品等困难的情况，提高组合称重的精度。