Qualitative control with quantitative models
Qualitative control with quantitative models
- Author(s): J. Raisch
- DOI: 10.1049/cp:19940630
For access to this article, please select a purchase option:
Buy conference paper PDF
Buy Knowledge Pack
IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.
Second International Conference on `Intelligent Systems Engineering' — Recommend this title to your library
Thank you
Your recommendation has been sent to your librarian.
- Author(s): J. Raisch Source: Second International Conference on `Intelligent Systems Engineering', 1994 p. 229 – 234
- Conference: Second International Conference on `Intelligent Systems Engineering'
- DOI: 10.1049/cp:19940630
- ISBN: 0 85296 621 0
- Location: Hamburg-Harburg, Germany
- Conference date: 5-9 Sept. 1994
- Format: PDF
This contribution addresses the issue of qualitative control based on quantitative models: A continuous plant is controlled via symbolic, or quantized, measurement and control signals. Quantization levels may be arbitrarily coarse (e.g. “temperature is too high“, “ok” or “too low”, “valve is open” or “closed”). Sensor quantization is assumed to partition the plant output space into rectilinear boxes, where each box is associated with a unique measurement symbol. Measurement symbols are processed by a control algorithm to give a sequence of control symbols. This sequence is then mapped back into the space of real-valued input signals and fed into the plant. The usual way to deal with such a situation is to determine a qualitative (discrete event) plant model, e.g. by “abstracting up” the original quantitative plant description, and then to use this qualitative model for controller design purposes. In contrast to this approach, it is argued here that, in many cases it might be more appropriate to design the symbol-manipulating controller directly on the basis of a quantitative, or numerical, model.
Inspec keywords: symbol manipulation; control system synthesis; discrete systems
Subjects: Discrete control systems; Control system analysis and synthesis methods; Data handling techniques
Related content
content/conferences/10.1049/cp_19940630
pub_keyword,iet_inspecKeyword,pub_concept
6
6