公开(公告)号：US5971714A

公开(公告)日：1999-10-26

申请号：US863115

申请日：1997-05-27

申请人： Eric J. Schaffer ,  Neal A. Werner ,  James J. Handzel

发明人： Eric J. Schaffer ,  Neal A. Werner ,  James J. Handzel

IPC分类号： F04B11/00 ,  F04B49/06 ,  F04C15/00 ,  F04B49/08

CPC分类号： F04C15/0049 ,  F04B11/0041 ,  F04B11/0058 ,  F04B49/065 ,  F04B2203/00 ,  F04B2203/0213

摘要： The construction and operation of the control of this invention is designed to minimize pressure changes at pump changeover by sampling pump pressure characteristics for each pump cycle, calculating a compensating motion profile and applying the profile to the motor which drives the pump. This control can be used with any pump which has the following characteristics: positive displacement, repeating cycle characteristics, rotary motor drive and an output pressure cycle curve which never falls to zero.

摘要翻译： 本发明的控制的结构和操作被设计成通过对每个泵循环的泵压力特性进行取样来最小化泵切换时的压力变化，计算补偿运动曲线并将轮廓应用于驱动泵的马达。 该控制可用于具有以下特征的任何泵：正位移，重复循环特性，旋转电机驱动和不会降至零的输出压力循环曲线。

公开(公告)号：US5070995A

公开(公告)日：1991-12-10

申请号：US555777

申请日：1990-07-19

申请人： Eric J. Schaffer ,  David J. Hanson

发明人： Eric J. Schaffer ,  David J. Hanson

IPC分类号： B65G43/10 ,  B65G47/31

CPC分类号： B65G43/10 ,  B65G47/31 ,  B65G2203/042 ,  B65G2203/044

摘要： A feeder conveyor system for transferring randomly spaced products received from an input conveyor to precise locations within flites of a wrapper conveyor. A plurality of conveyors, prior to the wrapper conveyor, are independently driven by product positioning drive subsystems. Each product positioning drive subsystem associates products on its respective conveyor with target flites on the wrapper conveyor, and characterizes positional errors of the products on the conveyor relative to their associated target flites as being in one of a plurality of discrete positional error states representing a range of errors. The velocity of the conveyors controlled by the positioning drive subsystem as a function of the positional error state and the fill state of the associated target flite and flite previous to the target flite. A plurality of spacing conveyors are positioned upstream from the positioning conveyors and are independently driven by products spacing drive subsystems. The velocity of the spacing conveyors is controlled by the spacing drive subsystems as a function of state flags to space products at flite lengths with respect to one another. Overall operation of the positioning drive subsystems and spacing drive subsystems is controlled by a system processor.

摘要翻译： 馈送输送机系统，用于将从输入输送机接收的随机间隔的产品传送到包装输送机的飞灰内的精确位置。 在包装机输送机之前的多个输送机由产品定位驱动子系统独立驱动。 每个产品定位驱动子系统将其各自输送机上的产品与包装输送机上的目标飞轮相关联，并且将输送机上的产品相对于其相关联的目标飞行物的位置误差表征为表示范围的多个离散位置误差状态之一 的错误。 由定位驱动子系统控制的输送机的速度作为目标飞翼之前的相关目标飞翼和飞翼的位置误差状态和填充状态的函数。 多个间隔输送机位于定位输送机的上游，并且由产品间隔驱动子系统独立地驱动。 间隔输送机的速度由作为状态标志的函数的间隔驱动子系统来控制，以使产品相对于彼此处于飞行长度。 定位驱动子系统和间隔驱动子系统的整体操作由系统处理器控制。