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Article Dans Une Revue European Journal of Control Année : 2019

About string stability of a vehicle chain with unidirectional controller

Alain Sarlette

Résumé

This paper deals with the problem of string stability in a chain of acceleration-controlled vehicles. It is known that string stability cannot be achieved, with any linear controller, when the vehicles' control inputs are based only on relative distances to a fixed number of predecessors. We extend the set of characteristics under which string stability is impossible by including elements like dynamic sensor parts and local inter-vehicular communication, as in cooperative adaptive cruise control. It is also known that a weaker form of string stability is achievable by adding absolute velocity measurements (e.g. "time-headway" policy). We show that a stronger property can also be achieved, provided steady-state control gain is infinite e.g. by using integral control.
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Dates et versions

hal-02394705 , version 1 (04-12-2019)

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Arash Farnam, Alain Sarlette. About string stability of a vehicle chain with unidirectional controller. European Journal of Control, 2019, ⟨10.1016/j.ejcon.2019.03.002⟩. ⟨hal-02394705⟩
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