Statistical analysis of automation actuator response times

Abstract

The aim of the study was to find the statistical significance of physical effects on automation actuator response times. A simple cyclic program was created using TIA Portal and uploaded to a PLC. Different pistons and valves were then tested and recorded using the TIA Portal trace measurement system. The results were then exported and analysed using IBM SPSS. The major predictor was found to be the direction of the actuation, which was affected by both the type of valve and piston used. Contrasting the findings to the digital effect on response times as provided by Siemens S7-1500 cycle and response time manual, it was concluded that the physical effects on response times were smaller in magnitude, but more persistent.