| 摘要 |
PROBLEM TO BE SOLVED: To provide a feed forward optimization control method with which convergence and stable time are made proper even when input signal wave frequently and rapidly generates sharp level fluctuation such as burst wave. SOLUTION: When an input signal generates the frequent and rapid sharp level fluctuation like the burst wave, the level fluctuation is detected by a fact that, for example, a value of re-reading rate of an optimization starting table exceeds a level threshold change threshold by judgment in a step S9 and after that, a control part changes a value of level threshold so that it may be raised more than that just before the state in a step 10. COPYRIGHT: (C)2008,JPO&INPIT
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