Research on Look-Ahead Control Strategy Based on Turbo PMAC for Parallel Kinematics Mechanism

A novel realtime look-ahead velocity control strategy, which was based on Turbo PMAC for parallel kinematics mechanism, was proposed to avoid gouging and mechanical vibration that caused by kinematics calculation failure in virtual axis machine tool machining. In terms of configuration of look-ahead control strategy, the basic is acceleration and deceleration algorithm. Then according to the ultiformity and practicality of polynomial, the acceleration and deceleration construction algorithm of polynomial were proposed. Finally, it was confirmed by experiment that the impact was reduced, which was account for the application of look-ahead control strategy and the performance of the control strategy was improved.