Table of Contents
With a PID controller, the heating output is determined via the entered PID parameters (P, I and D) and the respective setpoint or actual temperatures. The PID parameters thus define the temperature control characteristics of the system and are influenced by the following factors, among others:
These parameters cannot be perfectly predefined. As manual adjustments are difficult here, the Berghof controllers BRC, BRHS and BRTR-88 offer the option of autotuning. In this process, the control values are determined empirically empirically on the basis of a test run and can then be transferred to the system.
As shown in the diagram, this significantly increases the control accuracy of the system. When creating control parameters, an optimum must always be found between maximum deviation and minimum heating time. In most cases, an improvement in control accuracy leads to an increase in heating times and vice versa. The autotuning algorithm is set so that the actual temperature follows the specified profile as closely as possible.