PLC SYSTEM FOR ERROR DETECTION ACCORDING TO PLC CONTROL

摘要

According to the error detection system controlled by the PLC of the invention, according to the input and output signals of the PLC (programmable logic controller) control system PLC, the state transfer of the PLC control system is detected through information for the state values of multiple equipment actions at the same time,A first error detection unit that compares the detected state transfer information with the reference state transfer information when the PLC control system operates normally and detects whether there is an error in the PLC control system;And dividing the power consumption signal or the PLC input and output signal controlled by the PLC control system according to the control of the PLC control system,Extracting a plurality of statistical feature information from the separated signal,The extracted statistical feature information is applied to the trained auto associative neural network (AANN), including a second error detection unit for detecting whether the PLC control system is abnormal.