A programmable inference controller meeting highest safety requirements

• Autorzy: Vogrin P. , Halang W. A.
• Języki publikacji: EN

Abstrakty

EN

A programmable controller suited for automation applications of highest safety criticality is presented. Its features are input conditioning by low-resolution analogue-to-digital converters, inference by look-up in rule set tables, strictly periodic and jitter-free operation, high speed and simplicity of design. A fail-safe supervisor immediately initiates an emergency shut-down in case of a malfunction. The software in form of rule base tables can easily be verified by inspection. This device is used to implement control algorithms working with set-point preprocessors, which calculate internal set-point graphs of controlled variables in such a way that very high controller gains are attainable and, thus, stability is increased. The performance of these „SPP” controllers is closer to the „best physically possible”, and much more predictable than the one of conventional control structures. The otherwise conficting design objectives stability, safety, high speed, small energy consumption, or steady and harmonic temporal controller output values can nearly all be achieved.

Słowa kluczowe

EN

safety methoded control; safety-licensing; programmable electronic system; set-pair preprocessor; rule-based control; fuzzy control

• Wydawca: Łukasiewicz Industrial Research Institute for Automation and Measurements PIAP
• Czasopismo: Journal of Automation Mobile Robotics and Intelligent Systems
• Rocznik: 2010
• Tom: Vol. 4, No. 1
• Strony: 8--19
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Vogrin P.

autor

Halang W. A.

• Chair of Computer Engineering, Fernuniversität 58084 Hagen, Germany,

Bibliografia

• [1] Fagan M.E., „Design and Code Inspection to Reduce Errors in Program Development”. IBM Systems Journal, 1976, vol. 15, no. 3, 182-211.
• [2] „TÜV Cooperation Functional Safety: List of Type Approved Programmable Electronic Systems (PES, PLCs)”, 2008, http://www.tuv-fs.com.[3] Hoyer H., Freund E., „The Principle of Non-linear Decoupling of Systems with Application to Industrial Robots”. Regelungstechnische Praxis rtp, 22, 1980, pp. 80-87 and pp. 116-126.
• [3] Hoyer H., Freund E., „The Principle of Non-linear Decoupling of Systems with Application to Industrial Robots”. Regelungstechnische Praxis rtp, 22, 1980, pp. 80-87 and pp. 116-126.
• [4] „International Standard IEC 61508-1: Functional Safety of Electrical/Electronic/Programmable Electronic Systems: Generic Aspects - Part 1: General Requirements”. Geneva: International Electrotechnical Commission 1998.
• [5] Krebs H., Haspel U., „Ein Verfahren zur Software-Verifikation”. Regelungstechnische Praxis rtp, 1984, 26, pp.73-78.