Testing of multi-rate simulations using the ESL simulation language

ABSTRACT

The ESL continuous-system simulation language is proving to be a valuable tool in developing and evaluating real-time, multi-rate simulations. Its parallel segment feature supports multi-rate execution by allowing different step-sizes and/or integration algorithms in different segments. This allows the testing of theoretical predictions of instability, for example, before coding the real-time simulations is started. ESL also has advanced discontinuity handling features. A comparison of the results of simulations of a system that has many switching events with the discontinuity handling both enabled and disabled can provide valuable information about timing errors.

REFERENCES

• 1: Dale Word , John J. Zenor , Richard Bednar , Roy E. Crosbie , Narain G. Hingorani, Multi-rate real-time simulation techniques, Proceedings of the 2007 summer computer simulation conference, July 16-19, 2007, San Diego, California
• 2: Pearce, J. G. "Interfacing the ESL Simulation Language to the Virtual Test Bed" in Proceedings of 2007 Western Simulation Multiconference, San Diego, CA, January 2007.
• 3: Crosbie, R. E., J. J. Zenor, R. Bednar, D. Word and N. G. Hingorani "Low Cost High Speed Real Time Simulations for Electric Ship Power Systems" in Proceedings of Huntsville Simulation Conference, (Huntsville, AL October, 2005) SCS San Diego.
• 4: Dougal, R. A., "Design Tools for Electric Ship Systems" in Proceedings of IEEE Electric Ship Technologies Symposium, Philadelphia PA, July 2005 pp. 8--11, IEEE.
• 5: John J. Zenor , R. Bednar , D. Word , N. G. Hingorani , E. McGookin, Simulation of an unmanned underwater vehicle (UUV): a multi-rate simulation, Proceedings of the 2007 summer computer simulation conference, July 16-19, 2007, San Diego, California
• 6: R. Bednar , R. E. Crosbie, Stability of multi-rate simulation algorithms, Proceedings of the 2007 summer computer simulation conference, July 16-19, 2007, San Diego, California

INDEX TERMS

Keywords:
multi-rate simulation, parallel simulation, real-time simulation, simulation languages