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    • 3. 发明授权
    • Method for controlling constant-pressure fluid
    • 控制恒压流体的方法
    • US08135529B2
    • 2012-03-13
    • US12235705
    • 2008-09-23
    • Shih-Chieh LiaoJen-Hsiang Huang
    • Shih-Chieh LiaoJen-Hsiang Huang
    • F04B49/00
    • F04D15/0066
    • A method for controlling a constant-pressure fluid enables an inverter with a build-in controller to control rotation speed of a pump to achieve constant-pressure control thereof. In the control method, a pressure feedback value of output flow of the pump is measured and is compared with a pressure reference value to produce an error pressure value. Afterward, an operation condition of the pump, such as an abnormal handling condition, a deceleration standby handling condition, or an acceleration condition, is determined according to the pressure error value to shut down or re-start up the pump after a delay time. Hence, the control method can avoid frequently starting up or shutting down the inverter. Therefore, the power consumption and the operation cost are reduced. The use life of the pump prolongs and constant-pressure control for the pump can be implemented.
    • 用于控制恒压流体的方法使得具有内置控制器的逆变器能够控制泵的转速以实现其恒压控制。 在控制方法中,测量泵的输出流量的压力反馈值,并将其与压力参考值进行比较以产生误差压力值。 此后,根据压力误差值来确定泵的运转状态,例如异常处理条件,减速待机运转状态或加速条件,以在延迟时间之后关闭或重新启动泵。 因此,控制方式可以避免频繁启动或关闭变频器。 因此,功耗和运行成本降低。 泵的使用寿命延长,可实现泵的恒压控制。