Look-ahead control of road vehicles for safety and economy purposes

The paper proposes a look-ahead cruise control method considering both energy efficiency and the safety of vehicle motion. Based on the curve radius of the road, a method is proposed for the calculation of the safe cornering velocity, which is used in the look-ahead control design process. If the speed limit is in conflict with the calculated safe cornering velocity, the latter is applied in the energy optimization process of the look-ahead control algorithm. Thus, the designed velocity is coherent with the terrain characteristics, the speed limits and the geometry of the road as well, enabling the vehicle to travel safely and energy efficiently along the path. The main novelty of the paper is the consideration of the safe cornering velocity in the look-ahead design, improving energy efficiency and the safety of the vehicle during various maneuvers.

[1]  Raymond M. Brach,et al.  An Analytical Assessment of the Critical Speed Formula , 1997 .

[2]  Ezra Hauer,et al.  PREDICTION OF THE EXPECTED SAFETY PERFORMANCE OF RURAL TWO-LANE HIGHWAYS , 2000 .

[3]  Olaf Stursberg,et al.  Combined time and fuel optimal driving of trucks based on a hybrid model , 2009, 2009 European Control Conference (ECC).

[4]  Karl Henrik Johansson,et al.  Road grade estimation for look-ahead vehicle control using multiple measurement runs , 2010 .

[5]  Kang Li,et al.  On-board road condition monitoring system using slip-based tyre-road friction estimation and wheel speed signal analysis , 2007 .

[6]  Roberto Horowitz,et al.  Dynamic Friction Model-Based Tire-Road Friction Estimation and Emergency Braking Control , 2005 .

[7]  M Steinbuch,et al.  Velocity trajectory optimization in Hybrid Electric trucks , 2010, Proceedings of the 2010 American Control Conference.

[8]  Erik Hellström,et al.  Horizon Length and Fuel Equivalents for Fuel-optimal Look-ahead Control , 2010 .

[9]  G D Weaver,et al.  THE RELATIONSHIP OF VEHICLE PATHS TO HIGHWAY CURVE DESIGN , 1971 .

[10]  Tomás Echaveguren,et al.  A method to evaluate side friction in horizontal curves, using supply-demand concepts , 2004 .

[11]  Fuel Consumption Optimization for a City Bus , 2008 .

[12]  Péter Gáspár,et al.  Design of vehicle cruise control using road inclinations , 2013 .

[13]  Erik Hellström,et al.  Look-ahead Control for Heavy Trucks to minimize Trip Time and Fuel Consumption , 2007 .

[14]  R F Lambourn,et al.  New and improved accident reconstruction techniques for modern vehicles equipped with ESC systems , 2007 .

[15]  Seibum B. Choi,et al.  Practical vehicle rollover avoidance control using energy method , 2008 .

[16]  J. Christian Gerdes,et al.  Autonomous Vehicle Control at the Limits of Handling , 2012 .

[17]  Lars Nielsen,et al.  Look-ahead control — consequences of a non-linear fuel map on truck fuel consumption , 2008 .

[18]  Uwe Kiencke,et al.  Modeling of Rollover Sequences , 2000 .

[19]  Wade Bartlett,et al.  Validation of the Circular Trajectory Assumption in Critical Speed , 2005 .

[20]  Fredrik Gustafsson,et al.  Slip-based tire-road friction estimation , 1997, Autom..

[21]  Dimitar Filev,et al.  Stochastic optimal control of systems with soft constraints and opportunities for automotive applications , 2009, 2009 IEEE Control Applications, (CCA) & Intelligent Control, (ISIC).