The SPEEDTRONIC Mark IV Control™, a Distributed Fault Tolerant Gas Turbine Control System PUBLIC ACCESS

[+] Author Affiliations
D. Johnson, K. E. Gilbert, L. P. Buckley

General Electric Company

Paper No. 83-GT-106, pp. V005T13A007; 10 pages
  • ASME 1983 International Gas Turbine Conference and Exhibit
  • Volume 5: Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries
  • Phoenix, Arizona, USA, March 27–31, 1983
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7955-9
  • Copyright © 1983 by ASME


Greatly improved availability is the primary design goal of the SPEEDTRONTC Mark IV Gas Turbine control. It achieves this goal by distributing control functions among four microcomputers: three are identical control sections, and the fourth handles communications. Powerful on-line diagnostics indicate which section is faulty, down to the replaceable element. Panel repair is effected with the gas turbine running. Mean time to repair is predicted to be three to four hours. The prediction is that the SPEEDTRONIC Mark IV control will not cause a plant shut down more often than once in ten years. In addition, the system has capacity for redundant sensor inputs, which significantly reduces forced outages caused by faulty sensors. Information on how these results were accomplished is presented in the paper, along with a description of the initial experiences running gas turbines with the new system.

Copyright © 1983 by ASME
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