1989 Volume 1989 Issue 1 Pages 229-235
This research represents the design method of the repetitive controller of electro-hydraulic servovibrator and shows the result of experiments. In the vibration test of machine or in the fatigue test of material, it is required to control the waveform of periodic motion. From the internal model principle, the repetitive control is effective to this problem. To make the repetitive control system stable, it is necessary to design the stabilizing filter of the repetitive compensator and the series compensator appropriately. The performance index of wave distortion is defined and used to calculate the optimal design of these compensators. The size of actuator should be chosen to make the range of attainable amplitude wide enough to use. At the same time, the performance index of wave distortion should be small enough. The result of experiments of acceleration waveform control shows that the performance index of the wave distortion is 6.8% for the reference signal of triangular wave with fundamental frequency of 50Hz.
