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    • 8. 发明授权
    • Network control system, process management method in this system, and recording medium on which a process management program is recorded
    • 网络控制系统,该系统中的过程管理方法以及记录有过程管理程序的记录介质
    • US06243610B1
    • 2001-06-05
    • US09136427
    • 1998-08-20
    • Yutaka IinoKenji MitsumotoYasuo Takagi
    • Yutaka IinoKenji MitsumotoYasuo Takagi
    • G05B1500
    • G05B19/414G05B13/042G05B21/02G05B2219/34406G05B2219/37512
    • In a controlled object, a process variable of a controlled object process is detected by a sensor and its detection time is measured by a timer. A process signal transmitting device transmits, as a process signal, the process variable and the detection time to a control apparatus. A control variable calculating device calculates a control variable based on the received process variable and a control reference value, and transmits a control signal including the control variable and the received process variable detection time to the controlled object. In the controlled object, a control signal receiving device calculates a transmission delay, that is, a difference between control signal reception time that is measured by the timer and the transmitted process variable detection time, corrects the control variable by processing it in accordance with the transmission delay, and drives an actuator by using the corrected control variable.
    • 在受控对象中,受控对象处理的过程变量由传感器检测,其检测时间由定时器测量。 过程信号发送装置将过程变量和检测时间作为处理信号发送到控制装置。 控制变量计算装置基于所接收的过程变量和控制基准值来计算控制变量,并将包括控制变量和接收到的过程变量检测时间的控制信号发送到受控对象。 在受控对象中,控制信号接收装置计算传输延迟,即由定时器测量的控制信号接收时间与发送的过程变量检测时间之间的差异,根据该控制信号的处理来校正控制变量 传输延迟,并通过使用校正的控制变量驱动执行器。