Abstract: Aiming at the problems of real time control of engraving system in engraving cylinder production equipment, zerophase error tracking control method was studied for the 8 000 Hz working frequency engraving system. A realtime motion control platform with servo update time of 1 μs was developed based on DSP and FPGA, and a dual massspring system dynamics model was established for modeling. The sine sweep identification method was applied to obtain the amplitude and phase frequency response model, and an accurate mathematical model was established based on the subspace method. Based on the system mathematical model, a ZPETC with a lowpass filter to limit the controller output was proposed, and the lowpass filter bandwidth was determined by simulation. The result indicates that the step response dynamics is well improved, the rise time is reduced by 25 μs, and the resonant vibrations are well suppressed, the effectiveness and engineering reliability of the proposed control algorithm are demonstrated.
Key words: gravure print roller making; engraving system; model identification; zero phase error tracking control（ZPETC）