Publications / 1991 Proceedings of the 8th ISARC, Stuttgart, Germany

Modelling and Controlling the Road Finishing Process

Jean-Louis Gourdon, Francois Peyret
Pages 479-488 (1991 Proceedings of the 8th ISARC, Stuttgart, Germany, ISSN 2413-5844)

Among the road construction tasks, finishing is one of the most important because, once carried out, nothing can be done anymore to improve the quality of the profile. The behaviour of this equipment and of the material it handles is more complicated that it seems to be. The most significant point of this paper is the original mathematical model of the process that is presented in the first part. Then, the authors show how this model accounts for the main behaviour of the process, already known or just detected, and quote some applications of it. Among these, there is the possibility of using the model for elaboration of high performance control system of the finishing equipment. In the last part of the paper, the authors describe more particularly two types of control systems; one precise levelling control using an absolute reference like a guide wire or a laser plane and one for improving the most common working mode of the equipment (without absolute reference) using an original measurement of the average thickness of the layer.

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