Peristaltic pump controller with scale factor that varies as a step
function of pump inlet pressure
    3.
    发明授权
    Peristaltic pump controller with scale factor that varies as a step function of pump inlet pressure 失效
    蠕动泵控制器,其比例因子随泵入口压力的逐步函数而变化

    公开(公告)号:US5947692A

    公开(公告)日:1999-09-07

    申请号:US960676

    申请日:1997-10-30

    IPC分类号: F04B43/12 F04B49/06 F04B49/08

    摘要: A controller for a peristaltic pump receives as an input pressure P.sub.i sensed at the inlet of the pump. The controller derives a nonlinear scale factor S.sub.Pi that varies as a step function with P.sub.i. The scale factor S.sub.Pi equals a first nonvariable value when P.sub.i lays in a first defined zone of inlet pressures, and equals a second nonvariable value, different than the first nonvariable value, when P.sub.i lays in a second defined zone of inlet pressures different than the first defined zone of inlet pressures. The controller generates a pump speed command based, at least in part, upon S.sub.Pi.

    摘要翻译: 用于蠕动泵的控制器接收在泵的入口处感测的输入压力Pi。 控制器导出作为Pi的阶梯函数而变化的非线性比例因子SPi。 当Pi位于入口压力的第一限定区域中时,比例因子SPi等于第一非可变值,并且等于第一非易变值的第二非变量值,当Pi位于与第一非变量值不同的入口压力的第二限定区域中时 限定入口压力区域。 控制器至少部分地基于SPi产生泵速指令。