Abstract
A redesign method for discretizing a continuous-time controller is proposed. The resulting hybrid control system, e.g., with continuous-time plant and discrete-time controller, is stable, and performance including the system's intersampling behavior can be optimized by approximating some chosen reference transfer function of the continuous-time control system. In order to obtain a tractable problem, the continuous-time part of the hybrid system and the reference transfer function are approximated by a discrete-time system with arbitrary fast sampling. After lifting the resulting periodic system, the approximation problem can be formulated as a standard H∞-problem, which is solved using standard software for H∞ controller design. As an example, a discrete-time controller was determined for the H∞-optimal controller of a large space structure designed by M. G. Safonov et al. (1988).
| Original language | English |
|---|---|
| Pages (from-to) | 1781-1785 |
| Number of pages | 5 |
| Journal | Proceedings of the IEEE Conference on Decision and Control |
| Volume | 3 |
| Publication status | Published - 1990 |
| Externally published | Yes |
| Event | Proceedings of the 29th IEEE Conference on Decision and Control Part 6 (of 6) - Honolulu, HI, USA Duration: 5 Dec 1990 → 7 Dec 1990 |