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发明公开
CN105302193A PID控制器以及数据收集方法 有权

PID控制器以及数据收集方法
摘要：
本发明的PID控制器以及数据收集方法收集报警发生前后的详细的时序数据。PID控制器具备：操作量计算部(12)，通过PID控制运算，根据设定值(SP)与控制量(PV)来计算操作量(MV)；操作量输出部(13)，将操作量(MV)输出到控制器外部；报警通知部(14)，在检测到异常时产生报警；数据记录部(15)，临时记录控制量(PV)的时序数据；以及数据保存部(17)，仅在发生了报警的情况下，读出在该报警发生前后数据记录部(15)所记录的数据并进行保存。
摘要（英）：

A PID controller and a data collecting method collect detailed time series data for the time band before and after an alarm event. The PID controller includes: a manipulated variable calculating portion (12) that calculates a manipulated variable (MV) based on a set point (SP) and a process variable (PV) through a PID control calculation; a manipulated variable outputting portion that outputs a manipulated variable (MV) to outside of the controller; an alarm notifying portion that generates an alarm when a problem has been detected; a data recording portion that temporarily records time series data for the process variable PV; and a data storing portion that reads out and storing data recorded by the data recording portion (15) before and after the alarm event.

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