发明授权
- 专利标题: Weigh feeder system
- 专利标题(中): 称重送料系统
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申请号: US913203申请日: 1978-06-06
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公开(公告)号: US4210963A公开(公告)日: 1980-07-01
- 发明人: Ronald J. Ricciardi , Angelo Ferrara , Joseph L. Hartmann
- 申请人: Ronald J. Ricciardi , Angelo Ferrara , Joseph L. Hartmann
- 专利权人: Angelo Ferrara,Hartmann Joseph L,Ricciardi Ronald J
- 当前专利权人: Angelo Ferrara,Hartmann Joseph L,Ricciardi Ronald J
- 主分类号: G01G11/12
- IPC分类号: G01G11/12 ; G05D7/06 ; G01G11/08 ; G06F15/46
摘要:
Disclosed herein is an automatically controlled weigh feeding apparatus including a container prefilled with a substance, a device for discharging the substance from the container at a controllable weight, apparatus for weighing the container and its contents and for producing an electrical signal proportional to that weight, a first amplifier for amplifying the electrical signal, a first analog-digital converter coupled to said first amplifier and a digital computer coupled to said first analog-digital converter for computing the weight of substance remaining in the container. A second amplifier is coupled to said first amplifier and a ramp off-set circuit which is controlled by the digital computer inputs a second signal to the second amplifier means having a controlled stepping output applied as a second input signal to the second amplifier to maintain the output of the second amplifier within a given selected range of amplitude during one time cycle of operation. A second analog-digital converter interposed between the second amplifier and the digital computer. The digital computer is adapted to compute a corrective signal based on the signal received for controlling the discharge of the substance from the container.
公开/授权文献
- US5921127A Hot strip rolling mill 公开/授权日:1999-07-13