Experimental research on deformation control for intelligent antenna structure based on self tuning fuzzy control

With dSPACE simulation system and developed piezoelectric ceramic actuators, an intelligent antenna structure was designed and founded as a testbed and the experiments concerned of deformation control were developed in this work. The traditional PID method was adopted in the experiments and a self tuning fuzzy PID controller was also established. The different control effects correspond to each method were compared in this paper. The results show that under given conditions, the piezoelectric structures are valid in the structures' deformation control. The maximum displacement control capacity of the actuator is 166 μm. The two methods both can achieve the deformation control and the absolute position accuracy of the self tuning fuzzy control can reach ±0.5 μm. Compared to the routine PID control method, the newly developed self tuning fuzzy PID controller can depress the overshoot, shorten the stable time, and improve the control accuracy to acquire a better control process.