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Automated highway lane changes of long vehicle combinations: A specific comparison between driver model based control and non-linear model predictive control

Peter Nilsson (Institutionen för tillämpad mekanik, Fordonsteknik och autonoma system) ; Leo Laine (Institutionen för tillämpad mekanik, Fordonsteknik och autonoma system) ; Niels van Duijkeren ; Bengt Jacobson (Institutionen för tillämpad mekanik, Fordonsteknik och autonoma system)
2015 International Symposium on Innovations in Intelligent SysTems and Applications (INISTA), September 2-4, Madrid, Spain p. 472-479. (2015)
[Konferensbidrag, refereegranskat]

This paper compares the vehicle dynamics performances of two approaches for automated lane change manoeuvres of a long vehicle combination in simulated highway driving. One of the two approaches is a non-linear model predictive controller (NMPC), and the other is based on driver model control (DMC) theory. Both approaches utilize traffic situation predictions that include motion variable constraints and actuation requests for steering, propulsion and braking. The two automated driving approaches are compared in a simulation environment including a high-fidelity vehicle plant model and models of surrounding vehicles. Simulations show that both approaches can generate feasible lane change manoeuvres at the constant speeds of 44 and 78 km/h. In addition, lane changes were successfully conducted in combination with retardation due to leading vehicle braking from 80 to 50 km/h with a varying retardation range of 0.1-0.7 g. In general, the non-linear model predictive control shows a shorter lane change duration and lower values of the used absolute magnitude of the longitudinal and lateral accelerations. However, the specific objective function used in the NMPC leads to an unnecessary variation of longitudinal vehicle speed compared to the driver model control approach.

Nyckelord: predictive control,road vehicles,steering systems,vehicle dynamics,nonlinear control systems



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Denna post skapades 2015-10-20. Senast ändrad 2016-08-23.
CPL Pubid: 224476

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Fordonsteknik och autonoma system

Ämnesområden

Transport
Farkostteknik

Chalmers infrastruktur