Implementation of Kalman Filter in plc

Abstract

Using the structured text STL language for programmable logic controller (PLC), the implementation of Calman filter on PLC is studied. In this paper, two implementation methods are introduced in detail. The detailed implementation of the second methods is based on S7-1200PLC, and the algorithm is applied to the temperature detection experiment. SIMULINK model and simulation results were compared, show that the Kalman filter in PLC to a certain extent can be achieved, and can very good filtering PLC analog data acquisition module with all kinds of disturbance, increase in measurement accuracy from the enhanced control effect to test the ideal.