- 著者
-
加藤 久雄
舟橋 康行
- 出版者
- 公益社団法人 計測自動制御学会
- 雑誌
- 計測自動制御学会論文集 (ISSN:04534654)
- 巻号頁・発行日
- vol.34, no.11, pp.1611-1615, 1998
When the sampled-data control systems are used, undesirable oscillations between the sampling instance are occasionally observed. Such phenomenon is called ripple. Some studies deal with this problem, and derive the conditions to achieve the ripple-free responses.<br>In this note, we consider the ripple-free tracking problem for sampled-data systems. A proof for the necessary and sufficient conditions to achieve the ripple-free tracking is given. This result also shows the necessity of the continuous-time internal model for the possibility of the ripple-free responses. The feature of our proof is that we use a new concept “convergence to the <i>C</i><sup>∞</sup> class.” We consider this concept makes discussion easier in this note.