Sensitivity Analysis to Define Guidelines for Predictive Control Design

Sensitivity Analysis to Define Guidelines for Predictive Control Design

Verkaik-Poelman, M.C. (TU Delft Transport and Planning)
Hegyi, A. (TU Delft Transport and Planning)
Verbraeck, A. (TU Delft Policy Analysis)
van Lint, J.W.C. (TU Delft Transport and Planning)

2020

Signalized traffic control is important in traffic management to reduce congestion in urban areas. With recent technological developments, more data have become available to the controllers and advanced state estimation and prediction methods have been developed that use these data. To fully benefit from these techniques in the design of signalized traffic controllers, it is important to look at the quality of the estimated and predicted input quantities in relation to the performance of the controllers. Therefore, in this paper, a general framework for sensitivity analysis is proposed, to analyze the effect of erroneous input quantities on the performance of different types of signalized traffic control. The framework is illustrated for predictive control with different adaptivity levels. Experimental relations between the performance of the control system and the prediction horizon are obtained for perfect and erroneous predictions. The results show that prediction improves the performance of a signalized traffic controller, even in most of the cases with erroneous input data. Moreover, controllers with high adaptivity seem to outperform controllers with low adaptivity, under both perfect and erroneous predictions. The outcome of the sensitivity analysis contributes to understanding the relations between information quality and performance of signalized traffic control. In the design phase of a controller, this insight can be used to make choices on the length of the prediction horizon, the level of adaptivity of the controller, the representativeness of the objective of the control system, and the input quantities that need to be estimated and predicted the most accurately.

http://resolver.tudelft.nl/uuid:760dfb48-a0f4-4da6-a02a-914ee4359d0e

https://doi.org/10.1177/0361198120919114

2020-11-18

0361-1981

Transportation Research Record, 2674 (6), 385-398

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

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© 2020 M.C. Verkaik-Poelman, A. Hegyi, A. Verbraeck, J.W.C. van Lint