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：US20020060174A1

公开(公告)日：2002-05-23

申请号：US09984737

申请日：2001-10-31

Applicant: ISHIDA CO., LTD.

Inventor： Masayoshi Nakajima

IPC: B07C005/00

CPC classification number: B07C5/362 ,  B07C5/366 ,  B65G47/525

Abstract: A sorting device in which a nozzle (31) having a flat tip portion (31a) for blowing air to a predetermined article X transported by a pair of transport belts (23, 23) is covered with a nozzle cover (32) whose forward-oriented and rearward-oriented end portions in the direction of air blowing are open and whose forward opening (32a) is located forward of the tip portion (31a) of the nozzle (31). Then, by covering above the transport belts (23, 23) with an upper cover (8), as well as providing a sorting cover (33) whose upper forward and lower rear end portions are open at a position opposed to the nozzle cover (32) with these transport belts (23, 23) provided therebetween, a continuous air path from the nozzle cover (32) to the sorting cover(33) is formed.

Abstract translation: 一种分拣装置，其中具有用于将空气吹送到由一对传送带（23,23）传送的预定物品X的平坦末端部分（31a）的喷嘴（31）被喷嘴罩（32）覆盖， 在空气吹送方向上的定向和向后端部开口，并且其前开口（32a）位于喷嘴（31）的末端部分（31a）的前方。 然后，通过用上盖（8）覆盖传送带（23,23）上方，以及提供分类盖（33），其分隔盖（33），其上前后端部和下后端部在与喷嘴盖相对的位置处打开 在这些传送带（23,23）之间设置有从喷嘴罩（32）到分类盖（33）的连续的空气路径。