Method for regulating a process variable of an industrial process applied to two or more consumers that can be switched in or out, in particular for the pressure regulation of a burner or heating system

摘要

In known methods, the large fluctuations of the process variable caused by cutting consumers in or out are corrected for by a comparison of setpoint and actual value and, depending on this, the generation of an closed-loop control signal acting on the process variable. Large deviations between setpoint and actual value that are undesirable or impermissible can occur under certain circumstances. In the method according to the invention, switching in or out of a consumer is detected, and a pulse-shaped control signal which is superimposed on the closed-loop control signal is generated depending on this. Thus, no large deviations between setpoint and actual value are necessary to correct for large fluctuations of the process variable due to the cutting in or out. The method can be used in regulating the pressure of a burner system or heating system.