Rapid prototyping of fuzzy controller pneumatic servo-system

Abstract

The results of simulation and experimental tests conducted for pneumatic servo-drive with FLC (fuzzy logic controller) are presented. For positioning control and teaching/play-back control of pneumatic servo-drive, a fuzzy PD (proportional-derivative) controller was designed and constructed by means of xPC Target software of Matlab-Simulink package for rapid prototyping and hardware-in-the-loop simulation. The non-linear simulation model of pneumatic servo-drive was constructed and used to tune fuzzy PD controller by means of Fuzzy Logic Toolbox of Matlab-Simulink package. The fuzzy logic PD controller enables precise positioning of pneumatic servo-drive with the precision specified for industrial manipulators. A lot of simulation and experimental tests were carried on pneumatic servo-drive with fuzzy controller which was used for its transpose and follow-up control. The designed fuzzy system is efficient, stable, and resistant to disturbances and can be applied in any configurations of pneumatic servo-drive without the necessity to tune the regulator, apply signal filtration, or additional operations in track control or restrict the signals generated. Pneumatic servo-drives with teaching/playback control system have considerable practical significance, especially in the control of manipulating machines, manipulators, and industrial robots as well as rehabilitation and physiotherapy manipulators.