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公开(公告)号:US5670852A
公开(公告)日:1997-09-23
申请号:US408592
申请日:1995-03-22
申请人: Keith E. Chipperfield , Kevin O'Hara , Greg Kangiser , Steve Soar
发明人: Keith E. Chipperfield , Kevin O'Hara , Greg Kangiser , Steve Soar
IPC分类号: F04B49/06 , A61M1/16 , F04B17/04 , F04B17/05 , F04C11/00 , F04C14/08 , F04C15/00 , H02K7/14 , H02K21/16 , H02P6/06 , H02P6/08 , H02P6/10 , H02P6/22 , H02P8/14 , H02P1/00
CPC分类号: F04C14/08 , F04B49/06 , F04C11/008 , F04C15/008 , H02P6/06 , A61M1/16 , F04B2205/01 , F04B2205/05 , H02P8/14
摘要: A pump motor controller for making pump motor speed independent of fluid pressure at the inlet and outlet of the pump. A first embodiment employs feedback to cause pump motor speed to converge to a desired speed established with a reference input signal. Based on this feedback, forward and reverse drive amplifiers in the first embodiment cause the pump motor speed to track the desired speed. A second embodiment employs a controller that produces drive signals to a stepper motor in proportion to a reference frequency. The controller and stepper motor in the second embodiment achieve speed control at low speeds without the use of a feedback control loop.
摘要翻译: 泵电机控制器,用于使泵电机速度独立于泵入口和出口处的流体压力。 第一实施例采用反馈使泵电机速度收敛到用参考输入信号建立的期望速度。 基于该反馈,第一实施例中的正向和反向驱动放大器使得泵电动机速度跟踪期望的速度。 第二实施例采用与参考频率成比例地向步进电动机产生驱动信号的控制器。 第二实施例中的控制器和步进电机在低速下实现速度控制,而不使用反馈控制回路。