# TUTSIM

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/TUTSIM
> Markdown URL: https://mediated.wiki/source/TUTSIM.md
> Source: https://en.wikipedia.org/wiki/TUTSIM
> Source revision: 1211543031
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**TUTSIM** was the first commercial [simulation](/source/Simulation) software ever to run on an IBM-PC. The package was used for the modeling and simulation of multi-domain systems using differential equations and [bond graphs](/source/Bond_graph).

## History

TUTSIM (Twente University of Technology SIMulator) was developed at the Control Laboratory of the [University of Twente](/source/University_of_Twente)[1][2] in the early-1970s. The program was initially created for the [PDP-11](/source/PDP-11) and [LSI-11](/source/LSI-11) series of [DEC](/source/Digital_Equipment_Corporation). At the end of the 1970s it was ported [3] to run on microprocessors like the [MOS Technology 6502](/source/MOS_Technology_6502) of the [Apple II](/source/Apple_II) and the [Intel 8086](/source/Intel_8086) of the [IBM Personal Computer](/source/IBM_Personal_Computer).

The company Meerman Automation took over the development of the package in the early-1980s. The rise of the IBM PC gave TUTSIM its world fame, making scientific simulation software available for researchers all over the world.[4] Failing to meet the demands of a graphical user interface with the rise of [Microsoft Windows](/source/Microsoft_Windows) in the late-1980s the popularity of TUTSIM slowly faded away. Multiple requests from bond graph researchers caused the University of Twente to begin development of a successor to TUTSIM.[5] This resulted in the software [20-sim](/source/20-sim), released by [Controllab](/source/Controllab), which contained many of the features that made TUTSIM popular.

## Use

TUTSIM was an interactive simulation language for continuous dynamical systems. Input had to be given in block diagram form or in bond graph form. The lack of a graphical UI required inputs in textual form by entering commands and arguments. For simulation, fixed step integration methods were provided. Simulation results were displayed in a graphical form or numerically in tables.

## See also

- [Bond graph](/source/Bond_graph)
- [University of Twente](/source/University_of_Twente)
- [Controllab](/source/Controllab)
- [20-sim](/source/20-sim)

## References

1. Dixhoorn, J.J. van (1977). "Simulation of bond graphs on minicomputers". *Journal of Dynamic Systems, Measurement, and Control*. **99**: 9–14. [doi:10.1115/1.3427080](https://doi.org/10.1115/1.3427080)

1. Meerman, J. W. (1981). "Bond graph modeling techniques THTSIM, software for the simulation of continuous dynamic systems on small and very small computer systems". *International Journal of Modelling and Simulation*. **1** (1): 52–56. [doi:10.1080/02286203.1981.11760440](https://doi.org/10.1080/02286203.1981.11760440)

1. Dixhoorn, J.J. van (1985). ["Simulation of mixed bond graphs and block diagrams on personal computers using TUTSIM"](http://purl.utwente.nl/publications/69444). *Journal of the Franklin Institute*. **319** (1–2): 257–267. [doi:10.1016/0016-0032(85)90079-1](https://doi.org/10.1016/0016-0032(85)90079-1). [ISSN 0016-0032](https://www.worldcat.org/issn/0016-0032)

1. Klee, H. (1991). "Simulation and design of a digital control system with TUTSIM". *IEEE Transactions on Education*. **34** (1): 76–82. [doi:10.1109/13.79885](https://doi.org/10.1109/13.79885)

1. Broenink, J.F. (1990), *Computer-Aided Physical-Systems Modeling and Simulation: a bond-graph approach*, ISBN 90-9003298-3

---
Adapted from the Wikipedia article [TUTSIM](https://en.wikipedia.org/wiki/TUTSIM) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/TUTSIM?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.