Comparative Study for a Conventional PID Controller Implemented with Three Different Component Sets

Abstract

In this work the ideal PID control structure was considered. This automatic controller was implemented by means of operational amplifiers using three different sets of values in its external components, but obtaining the same gains in each case. With each of these three sets of different components, three tests were carried out, adjusting the reference point to control an electric oven at a desired temperature of 140°C, 150°C and 160°C, the above was done experimentally to check if there is any change when varying the values of the components or if this does not affect the operation and performance of the PID controller. The plant in which the experiments were carried out is an electric muffle, which heats its interior using electrical resistances with a working voltage of 127 V and a power consumption of 12 A. It was found that the performance of the PID controller is not the same by using different sets of values in the components external to the operational amplifiers that make up the electronic PID controller, although these have the same gains Kp, Ki and Kd, one of the sets of components performs better than the other two, the above in two test cases considered.