| 摘要 |
<P>PROBLEM TO BE SOLVED: To securely optimize a PID gain in a short time. <P>SOLUTION: An input/output response data acquisition part 21 acquires input/output response data of a linear time invariant plant 1. A dynamic characteristic extraction part 22 extracts dynamic characteristics of the plant 1 to a plurality of different sample frequencies ω<SB POS="POST">i</SB>respectively by passing the input/output response data acquired by the input/output response data acquisition part 21 through a plurality of different band-pass filters F<SB POS="POST">i</SB>(s) having the sample frequencies ω<SB POS="POST">i</SB>as natural angular frequencies. An optimization part 23 generates a plurality of linear restriction expressions by applying the dynamic characteristics of the plant 1 of the different sample frequencies ω<SB POS="POST">i</SB>that the dynamic extraction part 22 extracts to a linear restriction expression which is convex with respect to the PID gain of a controller 2 of a feedback control system controlling the plant 1 and derives under a restriction condition, and finds an optimum value of the PID gain on the basis of the plurality of generated linear restriction expressions by using a linear programming method. <P>COPYRIGHT: (C)2013,JPO&INPIT |
