PURPOSE: To execute a stable control having very good precision by adopting a feed forward compensation and having a learning function in consideration of the difference between an aimed waveform and the actual oscillating waveform.
CONSTITUTION: In an oscillating device for oscillating a mold 1 with an electrohydraulic stepping cylinder 5 through link mechanism 3, at the time of outputting a driving signal to a driving unit 26 of the electrohydraulic stepping cylinder 5, compensating signals for cancelling an operating delay of the electrohydraulic stepping cylinder 5 and a moving transferring delay caused by the deformation of the link mechanism 3, etc., are added to the aimed waveform signal of the mold 1 to execute the feed forward compensation. Further, the actual oscillating waveform of the mold 1 is periodically detected and also, the difference with the aimed waveform is obtd. and a learning circuit 35 for adding this difference signal to the aimed waveform signal is provided.
CHIGIRA AKIJI
SASAKI KAZUYA
AOKI MASATO
