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An experimentally confirmed driver longitudinal acceleration control model combined with vehicle lateral motion

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Some approaches to emulating an expert driver's longitudinal and lateral integrated control using jerk information are studied in this paper. A trade-off strategy between longitudinal traction versus cornering traction was extracted experimentally by using jerk information to observe voluntary braking and turning during driving. The strategy is realised by determining the longitudinal acceleration command during combination motion by vehicle lateral jerk. The vehicle dynamical rationality of the method is also evaluated by computer simulation in view of instantaneous handling characteristics. Applying the strategy, we made a longitudinal driver model that works in coordination with any steering input. Adopting a programmed handling model and a preview-follower model for the steering input, we carried out computer simulation. We also carried out cornering and braking lane-change experiments with an expert driver. The simulation results and experimental results agree well and we confirm that the model can emulate a certain part of the expert driver's control strategy for trading off longitudinal and lateral accelerations.

Keywords: driver model; jerk; longitudinal and lateral coordination; vehicle dynamics

Document Type: Research Article


Affiliations: 1: Hitachi, Ltd., Ibaraki, Japan 2: Kanagawa institute of Technology, Kanagawa, Japan

Publication date: 2008-09-01

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