Fast and precise positioning of rotary table systems by feedforward disturbance compensation considering interference force

This paper presents a model-based feedforward compensation approach for the fast and precise positioning of a rotary table system with two actuators. Since the interference force between the primary and slave actuators deteriorates the positioning performance, the interference model as well as the disturbance model are mathematically modeled to apply the model-based feedforward compensation. The effectiveness of the proposed approach has been verified using a prototype.