DDCC+ based voltage-mode PID controller employing only grounded passive components

Abstract

A new voltage-mode (VM) single-input single-output circuit for realizing proportional-integral-derivative (PID) controller is proposed in this study. The proposed PID controller employs a canonical number of only grounded passive components without requiring any critical passive component matching conditions and cancellation constraints. Therefore, it is easily implemented in integrated circuit (IC) process. Also, it uses three plus-type differential difference current conveyors. It has high input and low output impedances; thus, it can be easily cascaded with other VM configurations. Proportional, integral and derivative parameters of the proposed PID controller can be easily adjusted via only resistors for fix valued capacitors in IC fabrication. A number of analyses with SPICE program and an experimental test result are included to demonstrate performance of the proposed PID controller.