Controller of sample value pid

TLDR: In this article, an identification signal produced from a persistently exciting signal produced at an identifying signal generating part is added 6 to the output signal of an arithmetic part 5 for sample value PID control to obtain a control signal.

Abstract: PURPOSE:To eliminate the real control period of a controller and to realize a high working efficiency of a plant, by identifying the process with a specific identification signal during the control of a closed loop and calculating the sample value control constant from the result of the identification. CONSTITUTION:An identification signal produced from a persistently exciting signal produced at an identification signal generating part is added 6 to the output signal of an arithmetic part 5 for sample value PID control to obtain a control signal. Then the process parameter is identified at a pulse transmission function identifying part 9 by the said control signal and a process signal obtained by sampling the degree of control of a process 1. Furthermore the transmission function of a region S is calculated through a transmission function arithmetic part 10 and by the pulse transmission function of the process which is obtained at the part 9. Based on the result of operation, the control constant of the part 5 is calculated at an arithmetic part 11 for sample value control constant.