Experimental Analysis and Optimal Control of PZT Based Cantilever Beam Using Fuzzy-PID Controllers

In this study experimental analysis and control of a PZT based cantilever is performed using Fuzzy-PID controllers. Two PZT patches were attached to the rigid end of the Cantilever beam out of which one was used as an actuator and another PZT was used as a sensor. The sensor input was provided to a computer using an NI DAQ card. The sensor signal was received by the computer through LABVIEW software where the control algorithms using PID and Fuzzy-PID controller were designed. At the rigid end of the cantilever beam, a magnet was attached and an electromagnet was used as a controller for controlling the vibrations. The vibration suppression was done at the first order mode frequency of the cantilever beam and both PID and fuzzy-PID controllers show good suppression of the vibrations. However, the results show that fuzzy-PID controllers have better characteristics than PID control.